/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-MCRwithDepranks-BasicCegarLoop.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/concurrent_increment.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-44898dd [2022-02-10 02:44:53,536 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-10 02:44:53,538 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-10 02:44:53,611 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-10 02:44:53,650 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-MCRwithDepranks-BasicCegarLoop.epf [2022-02-10 02:44:53,673 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-10 02:44:53,673 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-10 02:44:53,673 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-10 02:44:53,673 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-10 02:44:53,674 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-10 02:44:53,674 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-10 02:44:53,675 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-10 02:44:53,675 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-10 02:44:53,675 INFO L138 SettingsManager]: * Use SBE=true [2022-02-10 02:44:53,675 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-10 02:44:53,676 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-10 02:44:53,676 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-10 02:44:53,676 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-10 02:44:53,676 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-10 02:44:53,676 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-10 02:44:53,676 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-10 02:44:53,676 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-10 02:44:53,676 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-10 02:44:53,676 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-10 02:44:53,676 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-10 02:44:53,676 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-10 02:44:53,676 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-10 02:44:53,677 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-10 02:44:53,677 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-10 02:44:53,677 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-10 02:44:53,678 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-10 02:44:53,678 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-10 02:44:53,678 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-10 02:44:53,678 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-10 02:44:53,678 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-10 02:44:53,678 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-10 02:44:53,678 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-10 02:44:53,678 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-10 02:44:53,678 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=MCR_WITH_DEPRANKS [2022-02-10 02:44:53,678 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-02-10 02:44:53,877 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-10 02:44:53,893 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-10 02:44:53,895 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-10 02:44:53,896 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-02-10 02:44:53,896 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-02-10 02:44:53,897 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/concurrent_increment.bpl [2022-02-10 02:44:53,897 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/concurrent_increment.bpl' [2022-02-10 02:44:53,913 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-10 02:44:53,914 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-10 02:44:53,915 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-10 02:44:53,915 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-10 02:44:53,915 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-10 02:44:53,924 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "concurrent_increment.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 02:44:53" (1/1) ... [2022-02-10 02:44:53,929 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "concurrent_increment.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 02:44:53" (1/1) ... [2022-02-10 02:44:53,934 INFO L137 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-02-10 02:44:53,935 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-10 02:44:53,936 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-10 02:44:53,936 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-10 02:44:53,936 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-10 02:44:53,941 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "concurrent_increment.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 02:44:53" (1/1) ... [2022-02-10 02:44:53,942 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "concurrent_increment.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 02:44:53" (1/1) ... [2022-02-10 02:44:53,943 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "concurrent_increment.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 02:44:53" (1/1) ... [2022-02-10 02:44:53,943 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "concurrent_increment.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 02:44:53" (1/1) ... [2022-02-10 02:44:53,945 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "concurrent_increment.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 02:44:53" (1/1) ... [2022-02-10 02:44:53,947 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "concurrent_increment.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 02:44:53" (1/1) ... [2022-02-10 02:44:53,949 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "concurrent_increment.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 02:44:53" (1/1) ... [2022-02-10 02:44:53,949 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-10 02:44:53,951 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-10 02:44:53,951 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-10 02:44:53,951 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-10 02:44:53,952 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "concurrent_increment.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 02:44:53" (1/1) ... [2022-02-10 02:44:53,956 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-10 02:44:53,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:44:53,975 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-02-10 02:44:53,981 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-02-10 02:44:53,999 INFO L124 BoogieDeclarations]: Specification and implementation of procedure dec given in one single declaration [2022-02-10 02:44:53,999 INFO L130 BoogieDeclarations]: Found specification of procedure dec [2022-02-10 02:44:53,999 INFO L138 BoogieDeclarations]: Found implementation of procedure dec [2022-02-10 02:44:53,999 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-02-10 02:44:53,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-10 02:44:53,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-10 02:44:53,999 INFO L124 BoogieDeclarations]: Specification and implementation of procedure inc given in one single declaration [2022-02-10 02:44:53,999 INFO L130 BoogieDeclarations]: Found specification of procedure inc [2022-02-10 02:44:53,999 INFO L138 BoogieDeclarations]: Found implementation of procedure inc [2022-02-10 02:44:54,000 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-02-10 02:44:54,033 INFO L234 CfgBuilder]: Building ICFG [2022-02-10 02:44:54,034 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-10 02:44:54,142 INFO L275 CfgBuilder]: Performing block encoding [2022-02-10 02:44:54,152 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-10 02:44:54,153 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-02-10 02:44:54,156 INFO L202 PluginConnector]: Adding new model concurrent_increment.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.02 02:44:54 BoogieIcfgContainer [2022-02-10 02:44:54,156 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-10 02:44:54,160 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-10 02:44:54,160 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-10 02:44:54,163 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-10 02:44:54,163 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "concurrent_increment.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 02:44:53" (1/2) ... [2022-02-10 02:44:54,164 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c8bd3e9 and model type concurrent_increment.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.02 02:44:54, skipping insertion in model container [2022-02-10 02:44:54,164 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "concurrent_increment.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.02 02:44:54" (2/2) ... [2022-02-10 02:44:54,166 INFO L111 eAbstractionObserver]: Analyzing ICFG concurrent_increment.bpl [2022-02-10 02:44:54,182 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-02-10 02:44:54,182 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-10 02:44:54,182 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-10 02:44:54,182 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-02-10 02:44:54,227 WARN L322 ript$VariableManager]: TermVariabe decThread1of1ForFork1_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:44:54,227 WARN L322 ript$VariableManager]: TermVariabe decThread1of1ForFork1_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:44:54,227 WARN L322 ript$VariableManager]: TermVariabe decThread1of1ForFork1_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:44:54,228 WARN L322 ript$VariableManager]: TermVariabe decThread1of1ForFork1_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:44:54,228 WARN L322 ript$VariableManager]: TermVariabe decThread1of1ForFork1_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:44:54,228 WARN L322 ript$VariableManager]: TermVariabe decThread1of1ForFork1_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:44:54,229 WARN L322 ript$VariableManager]: TermVariabe decThread1of1ForFork1_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:44:54,229 WARN L322 ript$VariableManager]: TermVariabe decThread1of1ForFork1_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:44:54,229 WARN L322 ript$VariableManager]: TermVariabe decThread1of1ForFork1_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:44:54,230 WARN L322 ript$VariableManager]: TermVariabe decThread1of1ForFork1_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:44:54,230 WARN L322 ript$VariableManager]: TermVariabe incThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:44:54,230 WARN L322 ript$VariableManager]: TermVariabe incThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:44:54,230 WARN L322 ript$VariableManager]: TermVariabe incThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:44:54,231 WARN L322 ript$VariableManager]: TermVariabe incThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:44:54,231 WARN L322 ript$VariableManager]: TermVariabe incThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:44:54,231 WARN L322 ript$VariableManager]: TermVariabe incThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:44:54,232 WARN L322 ript$VariableManager]: TermVariabe incThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:44:54,232 WARN L322 ript$VariableManager]: TermVariabe incThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:44:54,233 WARN L322 ript$VariableManager]: TermVariabe incThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:44:54,233 WARN L322 ript$VariableManager]: TermVariabe incThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:44:54,242 WARN L322 ript$VariableManager]: TermVariabe incThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:44:54,245 WARN L322 ript$VariableManager]: TermVariabe decThread1of1ForFork1_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:44:54,251 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-02-10 02:44:54,300 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-10 02:44:54,308 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mLazyFiniteAutomaton=false, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-02-10 02:44:54,309 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-02-10 02:44:54,322 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 27 places, 22 transitions, 60 flow [2022-02-10 02:44:54,355 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 52 states, 51 states have (on average 1.9607843137254901) internal successors, (100), 51 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:44:54,594 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 4880 transitions and produced 2525 states. [2022-02-10 02:44:54,617 INFO L276 IsEmpty]: Start isEmpty. Operand has 2525 states, 2154 states have (on average 1.4433611884865367) internal successors, (3109), 2524 states have internal predecessors, (3109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:44:54,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-02-10 02:44:54,631 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:44:54,631 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:44:54,632 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:44:54,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:44:54,635 INFO L85 PathProgramCache]: Analyzing trace with hash -1692534429, now seen corresponding path program 1 times [2022-02-10 02:44:54,641 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:44:54,641 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689875197] [2022-02-10 02:44:54,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:44:54,642 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:44:54,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:44:54,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:44:54,731 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:44:54,732 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689875197] [2022-02-10 02:44:54,732 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689875197] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 02:44:54,732 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 02:44:54,732 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-02-10 02:44:54,733 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985468995] [2022-02-10 02:44:54,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 02:44:54,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-10 02:44:54,736 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:44:54,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-10 02:44:54,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-10 02:44:54,774 INFO L87 Difference]: Start difference. First operand has 2525 states, 2154 states have (on average 1.4433611884865367) internal successors, (3109), 2524 states have internal predecessors, (3109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:44:54,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:44:54,918 INFO L93 Difference]: Finished difference Result 2524 states and 3107 transitions. [2022-02-10 02:44:54,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-10 02:44:54,921 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-02-10 02:44:54,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:44:54,957 INFO L225 Difference]: With dead ends: 2524 [2022-02-10 02:44:54,958 INFO L226 Difference]: Without dead ends: 1183 [2022-02-10 02:44:54,959 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-10 02:44:54,962 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 2 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 02:44:54,963 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 21 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 02:44:55,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1183 states. [2022-02-10 02:44:55,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1183 to 39. [2022-02-10 02:44:55,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.394736842105263) internal successors, (53), 38 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:44:55,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 53 transitions. [2022-02-10 02:44:55,043 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 53 transitions. Word has length 12 [2022-02-10 02:44:55,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:44:55,043 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 53 transitions. [2022-02-10 02:44:55,043 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:44:55,044 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 53 transitions. [2022-02-10 02:44:55,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-02-10 02:44:55,047 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:44:55,047 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:44:55,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-10 02:44:55,047 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:44:55,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:44:55,049 INFO L85 PathProgramCache]: Analyzing trace with hash 1232814418, now seen corresponding path program 1 times [2022-02-10 02:44:55,049 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:44:55,050 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754155337] [2022-02-10 02:44:55,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:44:55,050 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:44:55,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:44:55,108 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:44:55,108 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:44:55,108 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754155337] [2022-02-10 02:44:55,108 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754155337] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:44:55,109 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2051773332] [2022-02-10 02:44:55,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:44:55,109 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:44:55,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:44:55,111 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:44:55,111 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-02-10 02:44:55,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:44:55,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 4 conjunts are in the unsatisfiable core [2022-02-10 02:44:55,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:44:55,224 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:44:55,225 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:44:55,285 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:44:55,286 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2051773332] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:44:55,286 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:44:55,286 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2022-02-10 02:44:55,287 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983493589] [2022-02-10 02:44:55,287 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:44:55,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-10 02:44:55,288 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:44:55,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-10 02:44:55,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-02-10 02:44:55,289 INFO L87 Difference]: Start difference. First operand 39 states and 53 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:44:55,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:44:55,369 INFO L93 Difference]: Finished difference Result 68 states and 92 transitions. [2022-02-10 02:44:55,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-10 02:44:55,369 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-02-10 02:44:55,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:44:55,370 INFO L225 Difference]: With dead ends: 68 [2022-02-10 02:44:55,370 INFO L226 Difference]: Without dead ends: 68 [2022-02-10 02:44:55,371 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 27 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-02-10 02:44:55,372 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 33 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 02:44:55,372 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 40 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 02:44:55,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2022-02-10 02:44:55,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 38. [2022-02-10 02:44:55,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.4054054054054055) internal successors, (52), 37 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:44:55,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 52 transitions. [2022-02-10 02:44:55,376 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 52 transitions. Word has length 15 [2022-02-10 02:44:55,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:44:55,376 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 52 transitions. [2022-02-10 02:44:55,377 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:44:55,377 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 52 transitions. [2022-02-10 02:44:55,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-02-10 02:44:55,377 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:44:55,377 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:44:55,407 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-02-10 02:44:55,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:44:55,588 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:44:55,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:44:55,589 INFO L85 PathProgramCache]: Analyzing trace with hash 2136676334, now seen corresponding path program 1 times [2022-02-10 02:44:55,589 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:44:55,589 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061502810] [2022-02-10 02:44:55,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:44:55,589 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:44:55,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:44:55,622 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:44:55,623 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:44:55,623 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061502810] [2022-02-10 02:44:55,623 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061502810] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 02:44:55,623 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 02:44:55,623 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-10 02:44:55,623 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066326364] [2022-02-10 02:44:55,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 02:44:55,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-10 02:44:55,624 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:44:55,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-10 02:44:55,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-10 02:44:55,624 INFO L87 Difference]: Start difference. First operand 38 states and 52 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:44:55,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:44:55,682 INFO L93 Difference]: Finished difference Result 65 states and 85 transitions. [2022-02-10 02:44:55,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-10 02:44:55,683 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-02-10 02:44:55,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:44:55,684 INFO L225 Difference]: With dead ends: 65 [2022-02-10 02:44:55,684 INFO L226 Difference]: Without dead ends: 62 [2022-02-10 02:44:55,684 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-02-10 02:44:55,687 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 39 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 02:44:55,688 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 45 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 02:44:55,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-02-10 02:44:55,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 38. [2022-02-10 02:44:55,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.3783783783783783) internal successors, (51), 37 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:44:55,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 51 transitions. [2022-02-10 02:44:55,690 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 51 transitions. Word has length 15 [2022-02-10 02:44:55,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:44:55,691 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 51 transitions. [2022-02-10 02:44:55,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:44:55,691 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 51 transitions. [2022-02-10 02:44:55,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-02-10 02:44:55,691 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:44:55,691 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:44:55,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-02-10 02:44:55,692 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:44:55,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:44:55,692 INFO L85 PathProgramCache]: Analyzing trace with hash 655684526, now seen corresponding path program 2 times [2022-02-10 02:44:55,692 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:44:55,693 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245754106] [2022-02-10 02:44:55,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:44:55,693 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:44:55,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:44:55,743 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:44:55,743 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:44:55,743 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245754106] [2022-02-10 02:44:55,743 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245754106] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 02:44:55,743 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 02:44:55,744 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-10 02:44:55,744 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152375180] [2022-02-10 02:44:55,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 02:44:55,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-10 02:44:55,744 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:44:55,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-10 02:44:55,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-10 02:44:55,745 INFO L87 Difference]: Start difference. First operand 38 states and 51 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:44:55,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:44:55,804 INFO L93 Difference]: Finished difference Result 52 states and 70 transitions. [2022-02-10 02:44:55,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-10 02:44:55,804 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-02-10 02:44:55,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:44:55,805 INFO L225 Difference]: With dead ends: 52 [2022-02-10 02:44:55,805 INFO L226 Difference]: Without dead ends: 52 [2022-02-10 02:44:55,806 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-02-10 02:44:55,808 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 21 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 02:44:55,810 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 38 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 02:44:55,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-02-10 02:44:55,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 40. [2022-02-10 02:44:55,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.3846153846153846) internal successors, (54), 39 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:44:55,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 54 transitions. [2022-02-10 02:44:55,815 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 54 transitions. Word has length 15 [2022-02-10 02:44:55,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:44:55,816 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 54 transitions. [2022-02-10 02:44:55,816 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:44:55,816 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 54 transitions. [2022-02-10 02:44:55,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-02-10 02:44:55,817 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:44:55,817 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:44:55,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-02-10 02:44:55,818 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:44:55,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:44:55,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1007411278, now seen corresponding path program 2 times [2022-02-10 02:44:55,819 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:44:55,824 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347424977] [2022-02-10 02:44:55,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:44:55,824 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:44:55,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:44:55,866 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:44:55,866 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:44:55,866 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347424977] [2022-02-10 02:44:55,867 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347424977] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 02:44:55,867 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 02:44:55,867 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-10 02:44:55,867 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879372152] [2022-02-10 02:44:55,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 02:44:55,868 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-10 02:44:55,868 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:44:55,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-10 02:44:55,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-10 02:44:55,870 INFO L87 Difference]: Start difference. First operand 40 states and 54 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:44:55,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:44:55,919 INFO L93 Difference]: Finished difference Result 57 states and 78 transitions. [2022-02-10 02:44:55,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-10 02:44:55,920 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-02-10 02:44:55,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:44:55,920 INFO L225 Difference]: With dead ends: 57 [2022-02-10 02:44:55,920 INFO L226 Difference]: Without dead ends: 56 [2022-02-10 02:44:55,922 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-02-10 02:44:55,923 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 35 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 02:44:55,923 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 25 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 02:44:55,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-02-10 02:44:55,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 41. [2022-02-10 02:44:55,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.375) internal successors, (55), 40 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:44:55,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 55 transitions. [2022-02-10 02:44:55,927 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 55 transitions. Word has length 15 [2022-02-10 02:44:55,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:44:55,927 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 55 transitions. [2022-02-10 02:44:55,927 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:44:55,928 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 55 transitions. [2022-02-10 02:44:55,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-10 02:44:55,929 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:44:55,929 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:44:55,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-02-10 02:44:55,929 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:44:55,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:44:55,931 INFO L85 PathProgramCache]: Analyzing trace with hash 2022774175, now seen corresponding path program 1 times [2022-02-10 02:44:55,931 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:44:55,932 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098662213] [2022-02-10 02:44:55,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:44:55,932 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:44:55,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:44:55,997 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:44:55,998 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:44:55,998 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098662213] [2022-02-10 02:44:55,998 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098662213] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:44:55,998 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [793562933] [2022-02-10 02:44:55,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:44:55,998 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:44:55,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:44:56,000 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:44:56,001 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-02-10 02:44:56,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:44:56,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-10 02:44:56,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:44:56,116 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:44:56,116 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:44:56,196 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:44:56,196 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [793562933] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:44:56,197 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:44:56,197 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2022-02-10 02:44:56,197 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382012352] [2022-02-10 02:44:56,197 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:44:56,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-10 02:44:56,197 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:44:56,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-10 02:44:56,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-10 02:44:56,198 INFO L87 Difference]: Start difference. First operand 41 states and 55 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:44:56,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:44:56,216 INFO L93 Difference]: Finished difference Result 91 states and 124 transitions. [2022-02-10 02:44:56,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-10 02:44:56,216 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-02-10 02:44:56,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:44:56,217 INFO L225 Difference]: With dead ends: 91 [2022-02-10 02:44:56,217 INFO L226 Difference]: Without dead ends: 86 [2022-02-10 02:44:56,217 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 32 SyntacticMatches, 3 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-10 02:44:56,218 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 11 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 02:44:56,218 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 48 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 02:44:56,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2022-02-10 02:44:56,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 70. [2022-02-10 02:44:56,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 69 states have (on average 1.4782608695652173) internal successors, (102), 69 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:44:56,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 102 transitions. [2022-02-10 02:44:56,231 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 102 transitions. Word has length 18 [2022-02-10 02:44:56,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:44:56,232 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 102 transitions. [2022-02-10 02:44:56,232 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:44:56,232 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 102 transitions. [2022-02-10 02:44:56,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-10 02:44:56,232 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:44:56,232 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:44:56,250 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-02-10 02:44:56,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-02-10 02:44:56,448 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:44:56,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:44:56,448 INFO L85 PathProgramCache]: Analyzing trace with hash -850694553, now seen corresponding path program 2 times [2022-02-10 02:44:56,448 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:44:56,448 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36649674] [2022-02-10 02:44:56,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:44:56,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:44:56,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:44:56,492 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 02:44:56,492 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:44:56,492 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36649674] [2022-02-10 02:44:56,492 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36649674] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 02:44:56,492 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 02:44:56,492 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-02-10 02:44:56,492 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786862156] [2022-02-10 02:44:56,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 02:44:56,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-10 02:44:56,493 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:44:56,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-10 02:44:56,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-10 02:44:56,493 INFO L87 Difference]: Start difference. First operand 70 states and 102 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:44:56,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:44:56,518 INFO L93 Difference]: Finished difference Result 116 states and 165 transitions. [2022-02-10 02:44:56,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-10 02:44:56,518 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-02-10 02:44:56,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:44:56,519 INFO L225 Difference]: With dead ends: 116 [2022-02-10 02:44:56,519 INFO L226 Difference]: Without dead ends: 111 [2022-02-10 02:44:56,520 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-10 02:44:56,520 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 10 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 02:44:56,521 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 51 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 02:44:56,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2022-02-10 02:44:56,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 93. [2022-02-10 02:44:56,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 92 states have (on average 1.5326086956521738) internal successors, (141), 92 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:44:56,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 141 transitions. [2022-02-10 02:44:56,528 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 141 transitions. Word has length 18 [2022-02-10 02:44:56,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:44:56,529 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 141 transitions. [2022-02-10 02:44:56,529 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:44:56,529 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 141 transitions. [2022-02-10 02:44:56,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-10 02:44:56,529 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:44:56,529 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:44:56,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-02-10 02:44:56,530 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:44:56,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:44:56,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1787719246, now seen corresponding path program 3 times [2022-02-10 02:44:56,533 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:44:56,533 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963071146] [2022-02-10 02:44:56,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:44:56,533 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:44:56,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:44:56,589 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:44:56,589 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:44:56,589 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963071146] [2022-02-10 02:44:56,589 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963071146] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:44:56,590 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1317600801] [2022-02-10 02:44:56,590 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:44:56,590 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:44:56,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:44:56,592 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:44:56,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-02-10 02:44:56,617 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-10 02:44:56,617 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:44:56,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 6 conjunts are in the unsatisfiable core [2022-02-10 02:44:56,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:44:56,702 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:44:56,702 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:44:56,745 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:44:56,745 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1317600801] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:44:56,745 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:44:56,745 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2022-02-10 02:44:56,745 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45353919] [2022-02-10 02:44:56,745 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:44:56,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-10 02:44:56,746 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:44:56,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-10 02:44:56,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-02-10 02:44:56,746 INFO L87 Difference]: Start difference. First operand 93 states and 141 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:44:56,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:44:56,843 INFO L93 Difference]: Finished difference Result 197 states and 292 transitions. [2022-02-10 02:44:56,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-10 02:44:56,843 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-02-10 02:44:56,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:44:56,844 INFO L225 Difference]: With dead ends: 197 [2022-02-10 02:44:56,844 INFO L226 Difference]: Without dead ends: 197 [2022-02-10 02:44:56,844 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2022-02-10 02:44:56,845 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 54 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:44:56,845 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 91 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:44:56,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2022-02-10 02:44:56,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 109. [2022-02-10 02:44:56,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 108 states have (on average 1.5462962962962963) internal successors, (167), 108 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:44:56,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 167 transitions. [2022-02-10 02:44:56,849 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 167 transitions. Word has length 21 [2022-02-10 02:44:56,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:44:56,849 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 167 transitions. [2022-02-10 02:44:56,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:44:56,849 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 167 transitions. [2022-02-10 02:44:56,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-10 02:44:56,850 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:44:56,850 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:44:56,887 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-02-10 02:44:57,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:44:57,064 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:44:57,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:44:57,064 INFO L85 PathProgramCache]: Analyzing trace with hash -706887118, now seen corresponding path program 4 times [2022-02-10 02:44:57,065 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:44:57,065 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584739063] [2022-02-10 02:44:57,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:44:57,065 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:44:57,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:44:57,110 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:44:57,110 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:44:57,110 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584739063] [2022-02-10 02:44:57,110 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584739063] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:44:57,110 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [139029895] [2022-02-10 02:44:57,111 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:44:57,111 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:44:57,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:44:57,112 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:44:57,114 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-02-10 02:44:57,138 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:44:57,138 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:44:57,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 6 conjunts are in the unsatisfiable core [2022-02-10 02:44:57,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:44:57,212 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:44:57,212 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:44:57,257 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:44:57,257 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [139029895] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:44:57,257 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:44:57,257 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2022-02-10 02:44:57,257 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879511370] [2022-02-10 02:44:57,257 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:44:57,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-10 02:44:57,258 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:44:57,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-10 02:44:57,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-02-10 02:44:57,258 INFO L87 Difference]: Start difference. First operand 109 states and 167 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:44:57,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:44:57,354 INFO L93 Difference]: Finished difference Result 191 states and 281 transitions. [2022-02-10 02:44:57,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-10 02:44:57,354 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-02-10 02:44:57,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:44:57,355 INFO L225 Difference]: With dead ends: 191 [2022-02-10 02:44:57,356 INFO L226 Difference]: Without dead ends: 185 [2022-02-10 02:44:57,356 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2022-02-10 02:44:57,356 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 49 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:44:57,357 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 80 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:44:57,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2022-02-10 02:44:57,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 109. [2022-02-10 02:44:57,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 108 states have (on average 1.537037037037037) internal successors, (166), 108 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:44:57,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 166 transitions. [2022-02-10 02:44:57,361 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 166 transitions. Word has length 21 [2022-02-10 02:44:57,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:44:57,361 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 166 transitions. [2022-02-10 02:44:57,361 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:44:57,361 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 166 transitions. [2022-02-10 02:44:57,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-10 02:44:57,362 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:44:57,362 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:44:57,387 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-02-10 02:44:57,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:44:57,572 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:44:57,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:44:57,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1872872496, now seen corresponding path program 5 times [2022-02-10 02:44:57,572 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:44:57,572 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592970228] [2022-02-10 02:44:57,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:44:57,572 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:44:57,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:44:57,623 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:44:57,623 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:44:57,623 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592970228] [2022-02-10 02:44:57,623 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592970228] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:44:57,624 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1721765040] [2022-02-10 02:44:57,624 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:44:57,624 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:44:57,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:44:57,628 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:44:57,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-02-10 02:44:57,668 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-10 02:44:57,668 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:44:57,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 6 conjunts are in the unsatisfiable core [2022-02-10 02:44:57,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:44:57,762 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:44:57,762 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:44:57,803 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:44:57,804 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1721765040] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:44:57,804 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:44:57,804 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-02-10 02:44:57,804 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293291279] [2022-02-10 02:44:57,804 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:44:57,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-10 02:44:57,804 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:44:57,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-10 02:44:57,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-02-10 02:44:57,805 INFO L87 Difference]: Start difference. First operand 109 states and 166 transitions. Second operand has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:44:57,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:44:57,932 INFO L93 Difference]: Finished difference Result 220 states and 320 transitions. [2022-02-10 02:44:57,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-10 02:44:57,933 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-02-10 02:44:57,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:44:57,934 INFO L225 Difference]: With dead ends: 220 [2022-02-10 02:44:57,934 INFO L226 Difference]: Without dead ends: 220 [2022-02-10 02:44:57,934 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2022-02-10 02:44:57,935 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 56 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:44:57,936 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 92 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:44:57,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2022-02-10 02:44:57,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 145. [2022-02-10 02:44:57,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.625) internal successors, (234), 144 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:44:57,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 234 transitions. [2022-02-10 02:44:57,950 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 234 transitions. Word has length 21 [2022-02-10 02:44:57,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:44:57,951 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 234 transitions. [2022-02-10 02:44:57,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:44:57,951 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 234 transitions. [2022-02-10 02:44:57,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-10 02:44:57,952 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:44:57,952 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:44:57,982 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-02-10 02:44:58,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-02-10 02:44:58,180 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:44:58,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:44:58,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1265192562, now seen corresponding path program 6 times [2022-02-10 02:44:58,181 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:44:58,181 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990846310] [2022-02-10 02:44:58,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:44:58,181 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:44:58,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:44:58,215 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:44:58,215 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:44:58,215 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990846310] [2022-02-10 02:44:58,215 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990846310] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:44:58,215 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [137800592] [2022-02-10 02:44:58,215 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:44:58,215 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:44:58,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:44:58,217 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:44:58,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-02-10 02:44:58,242 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-02-10 02:44:58,243 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:44:58,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 6 conjunts are in the unsatisfiable core [2022-02-10 02:44:58,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:44:58,299 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:44:58,299 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:44:58,331 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:44:58,331 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [137800592] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:44:58,331 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:44:58,331 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-02-10 02:44:58,332 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258738529] [2022-02-10 02:44:58,332 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:44:58,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-10 02:44:58,333 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:44:58,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-10 02:44:58,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-02-10 02:44:58,334 INFO L87 Difference]: Start difference. First operand 145 states and 234 transitions. Second operand has 10 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:44:58,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:44:58,436 INFO L93 Difference]: Finished difference Result 230 states and 350 transitions. [2022-02-10 02:44:58,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-10 02:44:58,436 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-02-10 02:44:58,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:44:58,437 INFO L225 Difference]: With dead ends: 230 [2022-02-10 02:44:58,438 INFO L226 Difference]: Without dead ends: 225 [2022-02-10 02:44:58,438 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2022-02-10 02:44:58,438 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 109 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 02:44:58,439 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 59 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 02:44:58,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2022-02-10 02:44:58,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 177. [2022-02-10 02:44:58,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 176 states have (on average 1.6193181818181819) internal successors, (285), 176 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:44:58,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 285 transitions. [2022-02-10 02:44:58,444 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 285 transitions. Word has length 21 [2022-02-10 02:44:58,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:44:58,444 INFO L470 AbstractCegarLoop]: Abstraction has 177 states and 285 transitions. [2022-02-10 02:44:58,444 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:44:58,444 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 285 transitions. [2022-02-10 02:44:58,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-10 02:44:58,445 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:44:58,445 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:44:58,483 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-02-10 02:44:58,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:44:58,659 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:44:58,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:44:58,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1021798254, now seen corresponding path program 7 times [2022-02-10 02:44:58,660 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:44:58,660 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549991304] [2022-02-10 02:44:58,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:44:58,661 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:44:58,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:44:58,692 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:44:58,692 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:44:58,692 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549991304] [2022-02-10 02:44:58,692 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549991304] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:44:58,693 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [24038413] [2022-02-10 02:44:58,693 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:44:58,693 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:44:58,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:44:58,694 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:44:58,699 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-02-10 02:44:58,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:44:58,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 6 conjunts are in the unsatisfiable core [2022-02-10 02:44:58,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:44:58,772 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:44:58,773 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:44:58,812 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:44:58,813 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [24038413] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:44:58,813 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:44:58,813 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-02-10 02:44:58,813 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685508517] [2022-02-10 02:44:58,813 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:44:58,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-10 02:44:58,814 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:44:58,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-10 02:44:58,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-02-10 02:44:58,814 INFO L87 Difference]: Start difference. First operand 177 states and 285 transitions. Second operand has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:44:58,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:44:58,986 INFO L93 Difference]: Finished difference Result 307 states and 458 transitions. [2022-02-10 02:44:58,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-10 02:44:58,987 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-02-10 02:44:58,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:44:58,988 INFO L225 Difference]: With dead ends: 307 [2022-02-10 02:44:58,988 INFO L226 Difference]: Without dead ends: 307 [2022-02-10 02:44:58,989 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=140, Invalid=280, Unknown=0, NotChecked=0, Total=420 [2022-02-10 02:44:58,989 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 81 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:44:58,989 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 113 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:44:58,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2022-02-10 02:44:58,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 209. [2022-02-10 02:44:58,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 208 states have (on average 1.6394230769230769) internal successors, (341), 208 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:44:58,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 341 transitions. [2022-02-10 02:44:58,995 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 341 transitions. Word has length 21 [2022-02-10 02:44:58,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:44:58,995 INFO L470 AbstractCegarLoop]: Abstraction has 209 states and 341 transitions. [2022-02-10 02:44:58,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:44:58,995 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 341 transitions. [2022-02-10 02:44:58,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-10 02:44:58,996 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:44:58,996 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:44:59,017 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-02-10 02:44:59,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:44:59,216 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:44:59,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:44:59,216 INFO L85 PathProgramCache]: Analyzing trace with hash 1373525006, now seen corresponding path program 8 times [2022-02-10 02:44:59,216 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:44:59,216 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748822109] [2022-02-10 02:44:59,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:44:59,216 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:44:59,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:44:59,244 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:44:59,245 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:44:59,245 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748822109] [2022-02-10 02:44:59,245 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748822109] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:44:59,245 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [86349200] [2022-02-10 02:44:59,245 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:44:59,245 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:44:59,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:44:59,248 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:44:59,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-02-10 02:44:59,270 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:44:59,270 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:44:59,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 6 conjunts are in the unsatisfiable core [2022-02-10 02:44:59,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:44:59,333 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:44:59,333 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:44:59,367 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:44:59,368 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [86349200] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:44:59,368 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:44:59,368 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-02-10 02:44:59,368 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799249652] [2022-02-10 02:44:59,368 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:44:59,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-10 02:44:59,368 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:44:59,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-10 02:44:59,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-02-10 02:44:59,369 INFO L87 Difference]: Start difference. First operand 209 states and 341 transitions. Second operand has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:44:59,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:44:59,513 INFO L93 Difference]: Finished difference Result 354 states and 549 transitions. [2022-02-10 02:44:59,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-10 02:44:59,513 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-02-10 02:44:59,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:44:59,514 INFO L225 Difference]: With dead ends: 354 [2022-02-10 02:44:59,514 INFO L226 Difference]: Without dead ends: 352 [2022-02-10 02:44:59,515 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=149, Invalid=271, Unknown=0, NotChecked=0, Total=420 [2022-02-10 02:44:59,515 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 86 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:44:59,515 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 75 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:44:59,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2022-02-10 02:44:59,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 254. [2022-02-10 02:44:59,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 253 states have (on average 1.6600790513833992) internal successors, (420), 253 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:44:59,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 420 transitions. [2022-02-10 02:44:59,520 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 420 transitions. Word has length 21 [2022-02-10 02:44:59,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:44:59,521 INFO L470 AbstractCegarLoop]: Abstraction has 254 states and 420 transitions. [2022-02-10 02:44:59,521 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:44:59,521 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 420 transitions. [2022-02-10 02:44:59,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-10 02:44:59,521 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:44:59,521 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:44:59,537 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-02-10 02:44:59,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-02-10 02:44:59,737 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:44:59,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:44:59,737 INFO L85 PathProgramCache]: Analyzing trace with hash -1533964828, now seen corresponding path program 9 times [2022-02-10 02:44:59,737 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:44:59,737 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570512232] [2022-02-10 02:44:59,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:44:59,737 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:44:59,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:44:59,771 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:44:59,772 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:44:59,772 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570512232] [2022-02-10 02:44:59,772 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570512232] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:44:59,772 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1577790759] [2022-02-10 02:44:59,772 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:44:59,772 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:44:59,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:44:59,773 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:44:59,774 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-02-10 02:44:59,793 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-10 02:44:59,793 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:44:59,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 6 conjunts are in the unsatisfiable core [2022-02-10 02:44:59,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:44:59,886 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:44:59,886 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:44:59,916 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:44:59,917 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1577790759] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:44:59,917 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:44:59,917 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-02-10 02:44:59,917 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064941523] [2022-02-10 02:44:59,917 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:44:59,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-10 02:44:59,917 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:44:59,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-10 02:44:59,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-02-10 02:44:59,918 INFO L87 Difference]: Start difference. First operand 254 states and 420 transitions. Second operand has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:00,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:45:00,062 INFO L93 Difference]: Finished difference Result 476 states and 754 transitions. [2022-02-10 02:45:00,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-10 02:45:00,062 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-02-10 02:45:00,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:45:00,064 INFO L225 Difference]: With dead ends: 476 [2022-02-10 02:45:00,064 INFO L226 Difference]: Without dead ends: 476 [2022-02-10 02:45:00,064 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=161, Invalid=345, Unknown=0, NotChecked=0, Total=506 [2022-02-10 02:45:00,065 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 61 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:45:00,065 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 89 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:45:00,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2022-02-10 02:45:00,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 276. [2022-02-10 02:45:00,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 275 states have (on average 1.6618181818181819) internal successors, (457), 275 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:00,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 457 transitions. [2022-02-10 02:45:00,071 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 457 transitions. Word has length 21 [2022-02-10 02:45:00,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:45:00,071 INFO L470 AbstractCegarLoop]: Abstraction has 276 states and 457 transitions. [2022-02-10 02:45:00,071 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:00,071 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 457 transitions. [2022-02-10 02:45:00,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-10 02:45:00,072 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:45:00,072 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:45:00,103 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-02-10 02:45:00,291 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-02-10 02:45:00,291 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:45:00,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:45:00,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1764601042, now seen corresponding path program 10 times [2022-02-10 02:45:00,292 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:45:00,292 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298282674] [2022-02-10 02:45:00,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:45:00,292 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:45:00,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:00,316 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:00,316 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:45:00,316 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298282674] [2022-02-10 02:45:00,316 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298282674] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:45:00,317 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2029779446] [2022-02-10 02:45:00,317 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:45:00,317 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:00,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:45:00,318 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:45:00,321 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-02-10 02:45:00,337 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:45:00,337 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:45:00,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 6 conjunts are in the unsatisfiable core [2022-02-10 02:45:00,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:45:00,400 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:00,400 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:45:00,441 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:00,441 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2029779446] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:45:00,441 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:45:00,441 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-02-10 02:45:00,442 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714181881] [2022-02-10 02:45:00,443 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:45:00,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-10 02:45:00,443 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:45:00,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-10 02:45:00,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-02-10 02:45:00,443 INFO L87 Difference]: Start difference. First operand 276 states and 457 transitions. Second operand has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:00,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:45:00,578 INFO L93 Difference]: Finished difference Result 538 states and 855 transitions. [2022-02-10 02:45:00,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-10 02:45:00,578 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-02-10 02:45:00,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:45:00,580 INFO L225 Difference]: With dead ends: 538 [2022-02-10 02:45:00,580 INFO L226 Difference]: Without dead ends: 530 [2022-02-10 02:45:00,582 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2022-02-10 02:45:00,583 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 106 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:45:00,583 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 72 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:45:00,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2022-02-10 02:45:00,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 335. [2022-02-10 02:45:00,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 334 states have (on average 1.6736526946107784) internal successors, (559), 334 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:00,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 559 transitions. [2022-02-10 02:45:00,591 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 559 transitions. Word has length 21 [2022-02-10 02:45:00,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:45:00,591 INFO L470 AbstractCegarLoop]: Abstraction has 335 states and 559 transitions. [2022-02-10 02:45:00,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:00,592 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 559 transitions. [2022-02-10 02:45:00,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-02-10 02:45:00,592 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:45:00,592 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:45:00,611 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-02-10 02:45:00,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-02-10 02:45:00,808 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:45:00,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:45:00,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1863382819, now seen corresponding path program 11 times [2022-02-10 02:45:00,808 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:45:00,808 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004521345] [2022-02-10 02:45:00,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:45:00,809 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:45:00,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:00,846 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:00,846 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:45:00,846 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004521345] [2022-02-10 02:45:00,846 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004521345] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:45:00,846 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [521965757] [2022-02-10 02:45:00,846 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:45:00,846 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:00,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:45:00,847 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:45:00,849 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-02-10 02:45:00,869 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-10 02:45:00,869 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:45:00,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-10 02:45:00,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:45:00,937 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:00,937 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:45:01,005 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:01,005 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [521965757] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:45:01,005 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:45:01,005 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2022-02-10 02:45:01,006 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649592314] [2022-02-10 02:45:01,006 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:45:01,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-10 02:45:01,006 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:45:01,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-10 02:45:01,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-10 02:45:01,007 INFO L87 Difference]: Start difference. First operand 335 states and 559 transitions. Second operand has 5 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:01,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:45:01,031 INFO L93 Difference]: Finished difference Result 495 states and 798 transitions. [2022-02-10 02:45:01,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-10 02:45:01,032 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-02-10 02:45:01,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:45:01,033 INFO L225 Difference]: With dead ends: 495 [2022-02-10 02:45:01,034 INFO L226 Difference]: Without dead ends: 490 [2022-02-10 02:45:01,034 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 45 SyntacticMatches, 3 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-10 02:45:01,034 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 19 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 02:45:01,034 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 94 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 02:45:01,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2022-02-10 02:45:01,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 412. [2022-02-10 02:45:01,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 411 states have (on average 1.6666666666666667) internal successors, (685), 411 states have internal predecessors, (685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:01,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 685 transitions. [2022-02-10 02:45:01,044 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 685 transitions. Word has length 24 [2022-02-10 02:45:01,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:45:01,045 INFO L470 AbstractCegarLoop]: Abstraction has 412 states and 685 transitions. [2022-02-10 02:45:01,045 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:01,045 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 685 transitions. [2022-02-10 02:45:01,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-02-10 02:45:01,046 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:45:01,046 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:45:01,084 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-02-10 02:45:01,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-02-10 02:45:01,285 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:45:01,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:45:01,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1751504803, now seen corresponding path program 12 times [2022-02-10 02:45:01,285 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:45:01,285 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292660313] [2022-02-10 02:45:01,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:45:01,286 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:45:01,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:01,320 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-02-10 02:45:01,321 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:45:01,321 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292660313] [2022-02-10 02:45:01,321 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292660313] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:45:01,321 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [498631584] [2022-02-10 02:45:01,321 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:45:01,321 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:01,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:45:01,322 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:45:01,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-02-10 02:45:01,356 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-10 02:45:01,357 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:45:01,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-10 02:45:01,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:45:01,431 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-02-10 02:45:01,431 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:45:01,501 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-02-10 02:45:01,501 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [498631584] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:45:01,501 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:45:01,502 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2022-02-10 02:45:01,502 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583714579] [2022-02-10 02:45:01,502 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:45:01,502 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-10 02:45:01,502 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:45:01,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-10 02:45:01,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-10 02:45:01,503 INFO L87 Difference]: Start difference. First operand 412 states and 685 transitions. Second operand has 5 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:01,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:45:01,528 INFO L93 Difference]: Finished difference Result 611 states and 995 transitions. [2022-02-10 02:45:01,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-10 02:45:01,529 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-02-10 02:45:01,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:45:01,531 INFO L225 Difference]: With dead ends: 611 [2022-02-10 02:45:01,531 INFO L226 Difference]: Without dead ends: 605 [2022-02-10 02:45:01,531 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 45 SyntacticMatches, 3 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-10 02:45:01,531 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 19 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 02:45:01,531 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 94 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 02:45:01,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2022-02-10 02:45:01,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 488. [2022-02-10 02:45:01,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 488 states, 487 states have (on average 1.6899383983572895) internal successors, (823), 487 states have internal predecessors, (823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:01,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 823 transitions. [2022-02-10 02:45:01,555 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 823 transitions. Word has length 24 [2022-02-10 02:45:01,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:45:01,555 INFO L470 AbstractCegarLoop]: Abstraction has 488 states and 823 transitions. [2022-02-10 02:45:01,555 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:01,555 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 823 transitions. [2022-02-10 02:45:01,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-02-10 02:45:01,556 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:45:01,556 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:45:01,579 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-02-10 02:45:01,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-02-10 02:45:01,771 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:45:01,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:45:01,772 INFO L85 PathProgramCache]: Analyzing trace with hash 487584185, now seen corresponding path program 13 times [2022-02-10 02:45:01,772 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:45:01,772 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868658606] [2022-02-10 02:45:01,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:45:01,772 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:45:01,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:01,804 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 02:45:01,804 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:45:01,804 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868658606] [2022-02-10 02:45:01,804 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868658606] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:45:01,804 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [241813295] [2022-02-10 02:45:01,804 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:45:01,804 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:01,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:45:01,805 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:45:01,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-02-10 02:45:01,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:01,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-10 02:45:01,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:45:01,900 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 02:45:01,900 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:45:01,979 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 02:45:01,980 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [241813295] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:45:01,980 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:45:01,980 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2022-02-10 02:45:01,980 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432567694] [2022-02-10 02:45:01,980 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:45:01,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-10 02:45:01,980 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:45:01,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-10 02:45:01,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-10 02:45:01,981 INFO L87 Difference]: Start difference. First operand 488 states and 823 transitions. Second operand has 5 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:02,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:45:02,009 INFO L93 Difference]: Finished difference Result 691 states and 1139 transitions. [2022-02-10 02:45:02,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-10 02:45:02,010 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-02-10 02:45:02,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:45:02,012 INFO L225 Difference]: With dead ends: 691 [2022-02-10 02:45:02,012 INFO L226 Difference]: Without dead ends: 682 [2022-02-10 02:45:02,012 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 45 SyntacticMatches, 3 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-10 02:45:02,012 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 17 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 02:45:02,013 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 95 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 02:45:02,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2022-02-10 02:45:02,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 631. [2022-02-10 02:45:02,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 631 states, 630 states have (on average 1.7031746031746031) internal successors, (1073), 630 states have internal predecessors, (1073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:02,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 631 states to 631 states and 1073 transitions. [2022-02-10 02:45:02,024 INFO L78 Accepts]: Start accepts. Automaton has 631 states and 1073 transitions. Word has length 24 [2022-02-10 02:45:02,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:45:02,024 INFO L470 AbstractCegarLoop]: Abstraction has 631 states and 1073 transitions. [2022-02-10 02:45:02,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:02,024 INFO L276 IsEmpty]: Start isEmpty. Operand 631 states and 1073 transitions. [2022-02-10 02:45:02,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 02:45:02,025 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:45:02,025 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:45:02,043 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-02-10 02:45:02,242 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-02-10 02:45:02,243 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:45:02,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:45:02,243 INFO L85 PathProgramCache]: Analyzing trace with hash 2098122898, now seen corresponding path program 14 times [2022-02-10 02:45:02,243 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:45:02,243 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632366336] [2022-02-10 02:45:02,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:45:02,244 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:45:02,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:02,283 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:02,283 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:45:02,283 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632366336] [2022-02-10 02:45:02,283 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632366336] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:45:02,284 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1819287927] [2022-02-10 02:45:02,284 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:45:02,284 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:02,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:45:02,285 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:45:02,287 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-02-10 02:45:02,304 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:45:02,305 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:45:02,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-10 02:45:02,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:45:02,389 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:02,390 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:45:02,437 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:02,437 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1819287927] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:45:02,437 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:45:02,437 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2022-02-10 02:45:02,437 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329594613] [2022-02-10 02:45:02,437 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:45:02,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-10 02:45:02,438 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:45:02,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-10 02:45:02,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-02-10 02:45:02,438 INFO L87 Difference]: Start difference. First operand 631 states and 1073 transitions. Second operand has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:02,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:45:02,605 INFO L93 Difference]: Finished difference Result 1040 states and 1732 transitions. [2022-02-10 02:45:02,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-10 02:45:02,605 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-10 02:45:02,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:45:02,608 INFO L225 Difference]: With dead ends: 1040 [2022-02-10 02:45:02,608 INFO L226 Difference]: Without dead ends: 1040 [2022-02-10 02:45:02,609 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 49 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2022-02-10 02:45:02,609 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 76 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:45:02,609 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 143 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:45:02,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1040 states. [2022-02-10 02:45:02,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1040 to 666. [2022-02-10 02:45:02,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 666 states, 665 states have (on average 1.700751879699248) internal successors, (1131), 665 states have internal predecessors, (1131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:02,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 1131 transitions. [2022-02-10 02:45:02,621 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 1131 transitions. Word has length 27 [2022-02-10 02:45:02,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:45:02,622 INFO L470 AbstractCegarLoop]: Abstraction has 666 states and 1131 transitions. [2022-02-10 02:45:02,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:02,622 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 1131 transitions. [2022-02-10 02:45:02,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 02:45:02,623 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:45:02,623 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:45:02,642 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-02-10 02:45:02,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:02,839 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:45:02,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:45:02,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1099055662, now seen corresponding path program 15 times [2022-02-10 02:45:02,840 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:45:02,840 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062974024] [2022-02-10 02:45:02,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:45:02,840 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:45:02,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:02,879 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:02,879 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:45:02,879 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062974024] [2022-02-10 02:45:02,879 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062974024] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:45:02,879 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [590413154] [2022-02-10 02:45:02,879 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:45:02,879 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:02,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:45:02,880 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:45:02,881 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-02-10 02:45:02,899 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-10 02:45:02,899 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:45:02,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-10 02:45:02,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:45:02,992 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:02,992 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:45:03,059 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:03,059 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [590413154] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:45:03,059 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:45:03,059 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2022-02-10 02:45:03,060 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803393495] [2022-02-10 02:45:03,060 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:45:03,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-10 02:45:03,060 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:45:03,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-10 02:45:03,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-02-10 02:45:03,061 INFO L87 Difference]: Start difference. First operand 666 states and 1131 transitions. Second operand has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:03,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:45:03,173 INFO L93 Difference]: Finished difference Result 1049 states and 1715 transitions. [2022-02-10 02:45:03,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-10 02:45:03,174 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-10 02:45:03,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:45:03,177 INFO L225 Difference]: With dead ends: 1049 [2022-02-10 02:45:03,177 INFO L226 Difference]: Without dead ends: 1040 [2022-02-10 02:45:03,178 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=272, Unknown=0, NotChecked=0, Total=380 [2022-02-10 02:45:03,178 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 73 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:45:03,179 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 94 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:45:03,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1040 states. [2022-02-10 02:45:03,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1040 to 666. [2022-02-10 02:45:03,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 666 states, 665 states have (on average 1.699248120300752) internal successors, (1130), 665 states have internal predecessors, (1130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:03,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 1130 transitions. [2022-02-10 02:45:03,196 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 1130 transitions. Word has length 27 [2022-02-10 02:45:03,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:45:03,197 INFO L470 AbstractCegarLoop]: Abstraction has 666 states and 1130 transitions. [2022-02-10 02:45:03,197 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:03,197 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 1130 transitions. [2022-02-10 02:45:03,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 02:45:03,198 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:45:03,198 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:45:03,241 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-02-10 02:45:03,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:03,404 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:45:03,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:45:03,404 INFO L85 PathProgramCache]: Analyzing trace with hash 572921712, now seen corresponding path program 16 times [2022-02-10 02:45:03,404 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:45:03,404 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870189306] [2022-02-10 02:45:03,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:45:03,405 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:45:03,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:03,440 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:03,441 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:45:03,441 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870189306] [2022-02-10 02:45:03,441 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870189306] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:45:03,441 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1613252101] [2022-02-10 02:45:03,441 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:45:03,441 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:03,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:45:03,442 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:45:03,443 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-02-10 02:45:03,470 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:45:03,471 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:45:03,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-10 02:45:03,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:45:03,543 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:03,543 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:45:03,581 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:03,582 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1613252101] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:45:03,582 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:45:03,582 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2022-02-10 02:45:03,582 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150296043] [2022-02-10 02:45:03,582 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:45:03,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-10 02:45:03,582 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:45:03,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-10 02:45:03,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2022-02-10 02:45:03,583 INFO L87 Difference]: Start difference. First operand 666 states and 1130 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:03,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:45:03,756 INFO L93 Difference]: Finished difference Result 1057 states and 1710 transitions. [2022-02-10 02:45:03,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-10 02:45:03,757 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-10 02:45:03,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:45:03,760 INFO L225 Difference]: With dead ends: 1057 [2022-02-10 02:45:03,760 INFO L226 Difference]: Without dead ends: 1057 [2022-02-10 02:45:03,760 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=180, Invalid=372, Unknown=0, NotChecked=0, Total=552 [2022-02-10 02:45:03,761 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 85 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:45:03,761 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 108 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:45:03,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1057 states. [2022-02-10 02:45:03,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1057 to 715. [2022-02-10 02:45:03,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 715 states, 714 states have (on average 1.707282913165266) internal successors, (1219), 714 states have internal predecessors, (1219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:03,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 715 states to 715 states and 1219 transitions. [2022-02-10 02:45:03,778 INFO L78 Accepts]: Start accepts. Automaton has 715 states and 1219 transitions. Word has length 27 [2022-02-10 02:45:03,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:45:03,778 INFO L470 AbstractCegarLoop]: Abstraction has 715 states and 1219 transitions. [2022-02-10 02:45:03,778 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:03,778 INFO L276 IsEmpty]: Start isEmpty. Operand 715 states and 1219 transitions. [2022-02-10 02:45:03,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 02:45:03,780 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:45:03,780 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:45:03,798 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-02-10 02:45:03,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:03,995 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:45:03,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:45:03,996 INFO L85 PathProgramCache]: Analyzing trace with hash 467160558, now seen corresponding path program 17 times [2022-02-10 02:45:03,996 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:45:03,996 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858755877] [2022-02-10 02:45:03,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:45:03,996 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:45:03,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:04,040 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:04,041 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:45:04,041 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858755877] [2022-02-10 02:45:04,041 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858755877] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:45:04,041 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [921411112] [2022-02-10 02:45:04,041 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:45:04,041 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:04,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:45:04,042 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:45:04,043 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-02-10 02:45:04,062 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-10 02:45:04,062 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:45:04,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-10 02:45:04,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:45:04,150 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:04,150 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:45:04,214 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:04,215 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [921411112] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:45:04,215 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:45:04,215 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2022-02-10 02:45:04,215 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992409386] [2022-02-10 02:45:04,215 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:45:04,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-10 02:45:04,218 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:45:04,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-10 02:45:04,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2022-02-10 02:45:04,219 INFO L87 Difference]: Start difference. First operand 715 states and 1219 transitions. Second operand has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:04,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:45:04,389 INFO L93 Difference]: Finished difference Result 1110 states and 1814 transitions. [2022-02-10 02:45:04,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-10 02:45:04,389 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-10 02:45:04,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:45:04,393 INFO L225 Difference]: With dead ends: 1110 [2022-02-10 02:45:04,393 INFO L226 Difference]: Without dead ends: 1102 [2022-02-10 02:45:04,394 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=157, Invalid=395, Unknown=0, NotChecked=0, Total=552 [2022-02-10 02:45:04,396 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 91 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:45:04,397 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 103 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:45:04,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1102 states. [2022-02-10 02:45:04,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1102 to 850. [2022-02-10 02:45:04,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 849 states have (on average 1.7090694935217903) internal successors, (1451), 849 states have internal predecessors, (1451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:04,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1451 transitions. [2022-02-10 02:45:04,417 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1451 transitions. Word has length 27 [2022-02-10 02:45:04,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:45:04,417 INFO L470 AbstractCegarLoop]: Abstraction has 850 states and 1451 transitions. [2022-02-10 02:45:04,417 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:04,417 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1451 transitions. [2022-02-10 02:45:04,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 02:45:04,419 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:45:04,419 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:45:04,436 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-02-10 02:45:04,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:04,635 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:45:04,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:45:04,636 INFO L85 PathProgramCache]: Analyzing trace with hash 19806512, now seen corresponding path program 18 times [2022-02-10 02:45:04,636 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:45:04,636 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074351796] [2022-02-10 02:45:04,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:45:04,636 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:45:04,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:04,675 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:04,675 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:45:04,676 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074351796] [2022-02-10 02:45:04,676 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074351796] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:45:04,676 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2094711650] [2022-02-10 02:45:04,676 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:45:04,676 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:04,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:45:04,689 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:45:04,712 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-10 02:45:04,712 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:45:04,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-10 02:45:04,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:45:04,723 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-02-10 02:45:04,817 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:04,817 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:45:04,866 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:04,866 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2094711650] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:45:04,866 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:45:04,866 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2022-02-10 02:45:04,866 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175538876] [2022-02-10 02:45:04,866 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:45:04,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-10 02:45:04,866 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:45:04,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-10 02:45:04,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2022-02-10 02:45:04,867 INFO L87 Difference]: Start difference. First operand 850 states and 1451 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:05,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:45:05,160 INFO L93 Difference]: Finished difference Result 1416 states and 2304 transitions. [2022-02-10 02:45:05,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-02-10 02:45:05,160 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-10 02:45:05,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:45:05,164 INFO L225 Difference]: With dead ends: 1416 [2022-02-10 02:45:05,164 INFO L226 Difference]: Without dead ends: 1416 [2022-02-10 02:45:05,164 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=391, Invalid=799, Unknown=0, NotChecked=0, Total=1190 [2022-02-10 02:45:05,165 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 109 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:45:05,165 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 150 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:45:05,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1416 states. [2022-02-10 02:45:05,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1416 to 939. [2022-02-10 02:45:05,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 939 states, 938 states have (on average 1.7185501066098081) internal successors, (1612), 938 states have internal predecessors, (1612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:05,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 939 states to 939 states and 1612 transitions. [2022-02-10 02:45:05,182 INFO L78 Accepts]: Start accepts. Automaton has 939 states and 1612 transitions. Word has length 27 [2022-02-10 02:45:05,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:45:05,182 INFO L470 AbstractCegarLoop]: Abstraction has 939 states and 1612 transitions. [2022-02-10 02:45:05,183 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:05,183 INFO L276 IsEmpty]: Start isEmpty. Operand 939 states and 1612 transitions. [2022-02-10 02:45:05,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 02:45:05,184 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:45:05,184 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:45:05,205 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-02-10 02:45:05,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:05,403 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:45:05,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:45:05,404 INFO L85 PathProgramCache]: Analyzing trace with hash -587873422, now seen corresponding path program 19 times [2022-02-10 02:45:05,404 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:45:05,404 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369093716] [2022-02-10 02:45:05,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:45:05,404 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:45:05,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:05,440 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:05,440 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:45:05,440 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369093716] [2022-02-10 02:45:05,440 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369093716] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:45:05,440 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [943577829] [2022-02-10 02:45:05,440 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:45:05,440 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:05,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:45:05,441 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:45:05,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:05,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-10 02:45:05,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:45:05,476 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-02-10 02:45:05,568 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:05,569 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:45:05,615 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:05,615 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [943577829] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:45:05,615 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:45:05,615 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2022-02-10 02:45:05,615 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329092094] [2022-02-10 02:45:05,615 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:45:05,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-10 02:45:05,615 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:45:05,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-10 02:45:05,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-02-10 02:45:05,616 INFO L87 Difference]: Start difference. First operand 939 states and 1612 transitions. Second operand has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:05,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:45:05,846 INFO L93 Difference]: Finished difference Result 1547 states and 2553 transitions. [2022-02-10 02:45:05,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-10 02:45:05,846 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-10 02:45:05,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:45:05,852 INFO L225 Difference]: With dead ends: 1547 [2022-02-10 02:45:05,852 INFO L226 Difference]: Without dead ends: 1538 [2022-02-10 02:45:05,853 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=183, Invalid=467, Unknown=0, NotChecked=0, Total=650 [2022-02-10 02:45:05,853 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 155 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:45:05,853 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [155 Valid, 122 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:45:05,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1538 states. [2022-02-10 02:45:05,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1538 to 1188. [2022-02-10 02:45:05,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1188 states, 1187 states have (on average 1.7388374052232518) internal successors, (2064), 1187 states have internal predecessors, (2064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:05,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1188 states to 1188 states and 2064 transitions. [2022-02-10 02:45:05,883 INFO L78 Accepts]: Start accepts. Automaton has 1188 states and 2064 transitions. Word has length 27 [2022-02-10 02:45:05,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:45:05,883 INFO L470 AbstractCegarLoop]: Abstraction has 1188 states and 2064 transitions. [2022-02-10 02:45:05,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:05,883 INFO L276 IsEmpty]: Start isEmpty. Operand 1188 states and 2064 transitions. [2022-02-10 02:45:05,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 02:45:05,885 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:45:05,886 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:45:05,914 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-02-10 02:45:06,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:06,099 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:45:06,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:45:06,100 INFO L85 PathProgramCache]: Analyzing trace with hash -831267730, now seen corresponding path program 20 times [2022-02-10 02:45:06,100 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:45:06,100 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897266199] [2022-02-10 02:45:06,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:45:06,100 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:45:06,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:06,139 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:06,139 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:45:06,139 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897266199] [2022-02-10 02:45:06,139 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897266199] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:45:06,140 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [129192603] [2022-02-10 02:45:06,140 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:45:06,140 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:06,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:45:06,141 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:45:06,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-02-10 02:45:06,161 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:45:06,161 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:45:06,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-10 02:45:06,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:45:06,245 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:06,245 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:45:06,287 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:06,287 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [129192603] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:45:06,287 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:45:06,288 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2022-02-10 02:45:06,288 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139528799] [2022-02-10 02:45:06,288 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:45:06,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-10 02:45:06,288 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:45:06,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-10 02:45:06,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-02-10 02:45:06,289 INFO L87 Difference]: Start difference. First operand 1188 states and 2064 transitions. Second operand has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:06,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:45:06,618 INFO L93 Difference]: Finished difference Result 1766 states and 2881 transitions. [2022-02-10 02:45:06,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-02-10 02:45:06,619 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-10 02:45:06,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:45:06,624 INFO L225 Difference]: With dead ends: 1766 [2022-02-10 02:45:06,624 INFO L226 Difference]: Without dead ends: 1765 [2022-02-10 02:45:06,624 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=367, Invalid=823, Unknown=0, NotChecked=0, Total=1190 [2022-02-10 02:45:06,625 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 155 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:45:06,625 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [155 Valid, 127 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:45:06,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1765 states. [2022-02-10 02:45:06,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1765 to 1199. [2022-02-10 02:45:06,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1199 states, 1198 states have (on average 1.7095158597662772) internal successors, (2048), 1198 states have internal predecessors, (2048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:06,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1199 states to 1199 states and 2048 transitions. [2022-02-10 02:45:06,646 INFO L78 Accepts]: Start accepts. Automaton has 1199 states and 2048 transitions. Word has length 27 [2022-02-10 02:45:06,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:45:06,646 INFO L470 AbstractCegarLoop]: Abstraction has 1199 states and 2048 transitions. [2022-02-10 02:45:06,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:06,646 INFO L276 IsEmpty]: Start isEmpty. Operand 1199 states and 2048 transitions. [2022-02-10 02:45:06,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 02:45:06,648 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:45:06,648 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:45:06,676 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-02-10 02:45:06,876 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-02-10 02:45:06,876 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:45:06,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:45:06,877 INFO L85 PathProgramCache]: Analyzing trace with hash -479540978, now seen corresponding path program 21 times [2022-02-10 02:45:06,877 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:45:06,877 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227379318] [2022-02-10 02:45:06,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:45:06,877 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:45:06,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:06,915 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:06,915 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:45:06,915 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227379318] [2022-02-10 02:45:06,915 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227379318] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:45:06,915 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1988529034] [2022-02-10 02:45:06,915 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:45:06,915 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:06,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:45:06,916 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:45:06,918 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-02-10 02:45:06,937 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-02-10 02:45:06,938 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:45:06,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-10 02:45:06,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:45:07,020 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:07,020 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:45:07,064 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:07,064 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1988529034] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:45:07,064 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:45:07,064 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2022-02-10 02:45:07,064 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540518954] [2022-02-10 02:45:07,064 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:45:07,064 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-10 02:45:07,065 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:45:07,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-10 02:45:07,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2022-02-10 02:45:07,065 INFO L87 Difference]: Start difference. First operand 1199 states and 2048 transitions. Second operand has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:07,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:45:07,373 INFO L93 Difference]: Finished difference Result 1598 states and 2634 transitions. [2022-02-10 02:45:07,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-02-10 02:45:07,373 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-10 02:45:07,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:45:07,379 INFO L225 Difference]: With dead ends: 1598 [2022-02-10 02:45:07,379 INFO L226 Difference]: Without dead ends: 1596 [2022-02-10 02:45:07,379 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=367, Invalid=689, Unknown=0, NotChecked=0, Total=1056 [2022-02-10 02:45:07,380 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 127 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:45:07,380 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [127 Valid, 126 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:45:07,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1596 states. [2022-02-10 02:45:07,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1596 to 1162. [2022-02-10 02:45:07,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1162 states, 1161 states have (on average 1.697674418604651) internal successors, (1971), 1161 states have internal predecessors, (1971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:07,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1162 states to 1162 states and 1971 transitions. [2022-02-10 02:45:07,436 INFO L78 Accepts]: Start accepts. Automaton has 1162 states and 1971 transitions. Word has length 27 [2022-02-10 02:45:07,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:45:07,436 INFO L470 AbstractCegarLoop]: Abstraction has 1162 states and 1971 transitions. [2022-02-10 02:45:07,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:07,436 INFO L276 IsEmpty]: Start isEmpty. Operand 1162 states and 1971 transitions. [2022-02-10 02:45:07,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 02:45:07,438 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:45:07,438 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:45:07,457 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-02-10 02:45:07,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-02-10 02:45:07,652 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:45:07,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:45:07,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1854374204, now seen corresponding path program 22 times [2022-02-10 02:45:07,652 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:45:07,652 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052799396] [2022-02-10 02:45:07,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:45:07,652 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:45:07,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:07,699 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:07,699 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:45:07,699 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052799396] [2022-02-10 02:45:07,700 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052799396] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:45:07,700 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [909987707] [2022-02-10 02:45:07,700 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:45:07,700 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:07,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:45:07,701 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:45:07,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-02-10 02:45:07,723 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:45:07,723 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:45:07,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-10 02:45:07,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:45:07,826 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:07,826 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:45:07,878 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:07,878 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [909987707] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:45:07,879 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:45:07,879 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2022-02-10 02:45:07,879 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145711134] [2022-02-10 02:45:07,879 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:45:07,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-10 02:45:07,879 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:45:07,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-10 02:45:07,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-02-10 02:45:07,880 INFO L87 Difference]: Start difference. First operand 1162 states and 1971 transitions. Second operand has 14 states, 14 states have (on average 3.0) internal successors, (42), 14 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:08,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:45:08,163 INFO L93 Difference]: Finished difference Result 1699 states and 2761 transitions. [2022-02-10 02:45:08,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-02-10 02:45:08,164 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 14 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-10 02:45:08,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:45:08,168 INFO L225 Difference]: With dead ends: 1699 [2022-02-10 02:45:08,168 INFO L226 Difference]: Without dead ends: 1699 [2022-02-10 02:45:08,169 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=340, Invalid=782, Unknown=0, NotChecked=0, Total=1122 [2022-02-10 02:45:08,169 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 78 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:45:08,169 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 151 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:45:08,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1699 states. [2022-02-10 02:45:08,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1699 to 1201. [2022-02-10 02:45:08,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1201 states, 1200 states have (on average 1.6983333333333333) internal successors, (2038), 1200 states have internal predecessors, (2038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:08,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1201 states to 1201 states and 2038 transitions. [2022-02-10 02:45:08,186 INFO L78 Accepts]: Start accepts. Automaton has 1201 states and 2038 transitions. Word has length 27 [2022-02-10 02:45:08,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:45:08,187 INFO L470 AbstractCegarLoop]: Abstraction has 1201 states and 2038 transitions. [2022-02-10 02:45:08,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 14 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:08,187 INFO L276 IsEmpty]: Start isEmpty. Operand 1201 states and 2038 transitions. [2022-02-10 02:45:08,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 02:45:08,188 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:45:08,188 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:45:08,218 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-02-10 02:45:08,405 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-02-10 02:45:08,405 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:45:08,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:45:08,405 INFO L85 PathProgramCache]: Analyzing trace with hash 722324264, now seen corresponding path program 23 times [2022-02-10 02:45:08,406 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:45:08,406 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310200967] [2022-02-10 02:45:08,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:45:08,406 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:45:08,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:08,443 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:08,443 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:45:08,443 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310200967] [2022-02-10 02:45:08,443 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310200967] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:45:08,443 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1389138608] [2022-02-10 02:45:08,444 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:45:08,444 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:08,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:45:08,445 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:45:08,446 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-02-10 02:45:08,466 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-02-10 02:45:08,466 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:45:08,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-10 02:45:08,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:45:08,581 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:08,581 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:45:08,635 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:08,635 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1389138608] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:45:08,635 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:45:08,636 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 13 [2022-02-10 02:45:08,636 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654848411] [2022-02-10 02:45:08,636 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:45:08,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-10 02:45:08,636 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:45:08,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-10 02:45:08,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-02-10 02:45:08,636 INFO L87 Difference]: Start difference. First operand 1201 states and 2038 transitions. Second operand has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 13 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:08,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:45:08,887 INFO L93 Difference]: Finished difference Result 1950 states and 3222 transitions. [2022-02-10 02:45:08,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-02-10 02:45:08,887 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 13 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-10 02:45:08,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:45:08,892 INFO L225 Difference]: With dead ends: 1950 [2022-02-10 02:45:08,892 INFO L226 Difference]: Without dead ends: 1950 [2022-02-10 02:45:08,892 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=353, Invalid=703, Unknown=0, NotChecked=0, Total=1056 [2022-02-10 02:45:08,893 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 109 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:45:08,893 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 142 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:45:08,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1950 states. [2022-02-10 02:45:08,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1950 to 1236. [2022-02-10 02:45:08,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1236 states, 1235 states have (on average 1.702834008097166) internal successors, (2103), 1235 states have internal predecessors, (2103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:08,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1236 states to 1236 states and 2103 transitions. [2022-02-10 02:45:08,913 INFO L78 Accepts]: Start accepts. Automaton has 1236 states and 2103 transitions. Word has length 27 [2022-02-10 02:45:08,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:45:08,913 INFO L470 AbstractCegarLoop]: Abstraction has 1236 states and 2103 transitions. [2022-02-10 02:45:08,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 13 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:08,914 INFO L276 IsEmpty]: Start isEmpty. Operand 1236 states and 2103 transitions. [2022-02-10 02:45:08,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 02:45:08,915 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:45:08,915 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:45:08,934 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-02-10 02:45:09,130 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:09,131 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:45:09,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:45:09,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1925861522, now seen corresponding path program 24 times [2022-02-10 02:45:09,131 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:45:09,131 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558444303] [2022-02-10 02:45:09,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:45:09,131 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:45:09,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:09,172 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:09,172 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:45:09,172 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558444303] [2022-02-10 02:45:09,172 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558444303] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:45:09,172 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2063558249] [2022-02-10 02:45:09,172 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:45:09,173 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:09,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:45:09,174 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:45:09,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-02-10 02:45:09,205 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-02-10 02:45:09,205 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:45:09,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-10 02:45:09,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:45:09,300 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:09,300 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:45:09,360 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:09,360 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2063558249] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:45:09,360 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:45:09,360 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2022-02-10 02:45:09,360 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840957557] [2022-02-10 02:45:09,361 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:45:09,361 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-10 02:45:09,361 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:45:09,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-10 02:45:09,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2022-02-10 02:45:09,362 INFO L87 Difference]: Start difference. First operand 1236 states and 2103 transitions. Second operand has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:09,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:45:09,606 INFO L93 Difference]: Finished difference Result 2053 states and 3389 transitions. [2022-02-10 02:45:09,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-02-10 02:45:09,606 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-10 02:45:09,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:45:09,611 INFO L225 Difference]: With dead ends: 2053 [2022-02-10 02:45:09,611 INFO L226 Difference]: Without dead ends: 2044 [2022-02-10 02:45:09,611 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=373, Invalid=817, Unknown=0, NotChecked=0, Total=1190 [2022-02-10 02:45:09,612 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 134 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:45:09,612 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [134 Valid, 124 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:45:09,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2044 states. [2022-02-10 02:45:09,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2044 to 1248. [2022-02-10 02:45:09,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1248 states, 1247 states have (on average 1.6880513231756216) internal successors, (2105), 1247 states have internal predecessors, (2105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:09,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1248 states to 1248 states and 2105 transitions. [2022-02-10 02:45:09,630 INFO L78 Accepts]: Start accepts. Automaton has 1248 states and 2105 transitions. Word has length 27 [2022-02-10 02:45:09,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:45:09,631 INFO L470 AbstractCegarLoop]: Abstraction has 1248 states and 2105 transitions. [2022-02-10 02:45:09,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:09,631 INFO L276 IsEmpty]: Start isEmpty. Operand 1248 states and 2105 transitions. [2022-02-10 02:45:09,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 02:45:09,632 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:45:09,632 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:45:09,651 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-02-10 02:45:09,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-02-10 02:45:09,844 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:45:09,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:45:09,844 INFO L85 PathProgramCache]: Analyzing trace with hash -521702006, now seen corresponding path program 25 times [2022-02-10 02:45:09,844 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:45:09,844 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882748246] [2022-02-10 02:45:09,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:45:09,845 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:45:09,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:09,880 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:09,880 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:45:09,880 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882748246] [2022-02-10 02:45:09,880 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882748246] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:45:09,880 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1537929768] [2022-02-10 02:45:09,880 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:45:09,880 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:09,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:45:09,896 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:45:09,911 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-02-10 02:45:09,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:09,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-10 02:45:09,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:45:10,025 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:10,026 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:45:10,070 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:10,070 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1537929768] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:45:10,070 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:45:10,070 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2022-02-10 02:45:10,070 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505583050] [2022-02-10 02:45:10,070 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:45:10,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-10 02:45:10,071 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:45:10,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-10 02:45:10,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2022-02-10 02:45:10,071 INFO L87 Difference]: Start difference. First operand 1248 states and 2105 transitions. Second operand has 15 states, 15 states have (on average 3.0) internal successors, (45), 15 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:10,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:45:10,375 INFO L93 Difference]: Finished difference Result 2218 states and 3623 transitions. [2022-02-10 02:45:10,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-02-10 02:45:10,375 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 15 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-10 02:45:10,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:45:10,381 INFO L225 Difference]: With dead ends: 2218 [2022-02-10 02:45:10,382 INFO L226 Difference]: Without dead ends: 2218 [2022-02-10 02:45:10,391 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=366, Invalid=894, Unknown=0, NotChecked=0, Total=1260 [2022-02-10 02:45:10,392 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 90 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:45:10,392 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 194 Invalid, 366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 336 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:45:10,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2218 states. [2022-02-10 02:45:10,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2218 to 1421. [2022-02-10 02:45:10,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1421 states, 1420 states have (on average 1.685211267605634) internal successors, (2393), 1420 states have internal predecessors, (2393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:10,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1421 states to 1421 states and 2393 transitions. [2022-02-10 02:45:10,418 INFO L78 Accepts]: Start accepts. Automaton has 1421 states and 2393 transitions. Word has length 27 [2022-02-10 02:45:10,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:45:10,418 INFO L470 AbstractCegarLoop]: Abstraction has 1421 states and 2393 transitions. [2022-02-10 02:45:10,419 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 15 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:10,419 INFO L276 IsEmpty]: Start isEmpty. Operand 1421 states and 2393 transitions. [2022-02-10 02:45:10,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 02:45:10,420 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:45:10,420 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:45:10,438 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2022-02-10 02:45:10,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:10,638 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:45:10,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:45:10,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1241477458, now seen corresponding path program 26 times [2022-02-10 02:45:10,639 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:45:10,639 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565454100] [2022-02-10 02:45:10,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:45:10,639 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:45:10,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:10,664 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:10,665 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:45:10,665 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565454100] [2022-02-10 02:45:10,665 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565454100] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:45:10,665 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1659362012] [2022-02-10 02:45:10,665 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:45:10,665 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:10,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:45:10,666 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:45:10,667 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-02-10 02:45:10,685 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:45:10,685 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:45:10,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-10 02:45:10,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:45:10,776 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:10,776 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:45:10,822 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:10,822 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1659362012] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:45:10,822 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:45:10,822 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 14 [2022-02-10 02:45:10,822 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477478817] [2022-02-10 02:45:10,823 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:45:10,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-10 02:45:10,823 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:45:10,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-10 02:45:10,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2022-02-10 02:45:10,823 INFO L87 Difference]: Start difference. First operand 1421 states and 2393 transitions. Second operand has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:11,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:45:11,138 INFO L93 Difference]: Finished difference Result 2714 states and 4464 transitions. [2022-02-10 02:45:11,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-02-10 02:45:11,138 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-10 02:45:11,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:45:11,149 INFO L225 Difference]: With dead ends: 2714 [2022-02-10 02:45:11,149 INFO L226 Difference]: Without dead ends: 2714 [2022-02-10 02:45:11,150 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 386 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=451, Invalid=955, Unknown=0, NotChecked=0, Total=1406 [2022-02-10 02:45:11,150 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 123 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:45:11,150 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 162 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:45:11,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2714 states. [2022-02-10 02:45:11,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2714 to 1895. [2022-02-10 02:45:11,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1895 states, 1894 states have (on average 1.6916578669482576) internal successors, (3204), 1894 states have internal predecessors, (3204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:11,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1895 states to 1895 states and 3204 transitions. [2022-02-10 02:45:11,178 INFO L78 Accepts]: Start accepts. Automaton has 1895 states and 3204 transitions. Word has length 27 [2022-02-10 02:45:11,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:45:11,178 INFO L470 AbstractCegarLoop]: Abstraction has 1895 states and 3204 transitions. [2022-02-10 02:45:11,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:11,178 INFO L276 IsEmpty]: Start isEmpty. Operand 1895 states and 3204 transitions. [2022-02-10 02:45:11,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 02:45:11,180 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:45:11,180 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:45:11,199 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-02-10 02:45:11,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2022-02-10 02:45:11,395 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:45:11,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:45:11,396 INFO L85 PathProgramCache]: Analyzing trace with hash -257594738, now seen corresponding path program 27 times [2022-02-10 02:45:11,396 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:45:11,396 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050972048] [2022-02-10 02:45:11,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:45:11,396 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:45:11,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:11,431 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:11,432 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:45:11,432 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050972048] [2022-02-10 02:45:11,432 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050972048] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:45:11,432 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [63882883] [2022-02-10 02:45:11,432 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:45:11,432 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:11,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:45:11,433 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:45:11,434 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-02-10 02:45:11,451 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-10 02:45:11,452 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:45:11,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-10 02:45:11,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:45:11,547 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:11,547 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:45:11,591 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:11,592 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [63882883] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:45:11,592 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:45:11,592 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2022-02-10 02:45:11,592 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676014896] [2022-02-10 02:45:11,592 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:45:11,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-10 02:45:11,592 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:45:11,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-10 02:45:11,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-02-10 02:45:11,593 INFO L87 Difference]: Start difference. First operand 1895 states and 3204 transitions. Second operand has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:11,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:45:11,839 INFO L93 Difference]: Finished difference Result 3134 states and 5196 transitions. [2022-02-10 02:45:11,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-02-10 02:45:11,839 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-10 02:45:11,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:45:11,844 INFO L225 Difference]: With dead ends: 3134 [2022-02-10 02:45:11,844 INFO L226 Difference]: Without dead ends: 3120 [2022-02-10 02:45:11,845 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 312 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=364, Invalid=896, Unknown=0, NotChecked=0, Total=1260 [2022-02-10 02:45:11,845 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 171 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:45:11,845 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [171 Valid, 116 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:45:11,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3120 states. [2022-02-10 02:45:11,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3120 to 2105. [2022-02-10 02:45:11,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2105 states, 2104 states have (on average 1.69106463878327) internal successors, (3558), 2104 states have internal predecessors, (3558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:11,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2105 states to 2105 states and 3558 transitions. [2022-02-10 02:45:11,874 INFO L78 Accepts]: Start accepts. Automaton has 2105 states and 3558 transitions. Word has length 27 [2022-02-10 02:45:11,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:45:11,874 INFO L470 AbstractCegarLoop]: Abstraction has 2105 states and 3558 transitions. [2022-02-10 02:45:11,874 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:11,874 INFO L276 IsEmpty]: Start isEmpty. Operand 2105 states and 3558 transitions. [2022-02-10 02:45:11,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-02-10 02:45:11,876 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:45:11,876 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:45:11,895 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2022-02-10 02:45:12,081 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:12,081 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:45:12,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:45:12,082 INFO L85 PathProgramCache]: Analyzing trace with hash 2033991263, now seen corresponding path program 28 times [2022-02-10 02:45:12,082 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:45:12,082 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028580491] [2022-02-10 02:45:12,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:45:12,082 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:45:12,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:12,141 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:12,142 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:45:12,142 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028580491] [2022-02-10 02:45:12,142 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028580491] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:45:12,142 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [489587492] [2022-02-10 02:45:12,142 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:45:12,142 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:12,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:45:12,157 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:45:12,164 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-02-10 02:45:12,184 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:45:12,184 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:45:12,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 15 conjunts are in the unsatisfiable core [2022-02-10 02:45:12,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:45:12,285 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:12,285 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:45:12,381 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:12,381 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [489587492] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:45:12,381 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:45:12,381 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 4 [2022-02-10 02:45:12,382 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284140233] [2022-02-10 02:45:12,382 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:45:12,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-10 02:45:12,382 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:45:12,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-10 02:45:12,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-02-10 02:45:12,382 INFO L87 Difference]: Start difference. First operand 2105 states and 3558 transitions. Second operand has 6 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:12,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:45:12,437 INFO L93 Difference]: Finished difference Result 2736 states and 4584 transitions. [2022-02-10 02:45:12,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-10 02:45:12,437 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-02-10 02:45:12,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:45:12,442 INFO L225 Difference]: With dead ends: 2736 [2022-02-10 02:45:12,442 INFO L226 Difference]: Without dead ends: 2731 [2022-02-10 02:45:12,442 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 58 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-02-10 02:45:12,443 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 27 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 02:45:12,443 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 159 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 02:45:12,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2731 states. [2022-02-10 02:45:12,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2731 to 2433. [2022-02-10 02:45:12,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2433 states, 2432 states have (on average 1.694078947368421) internal successors, (4120), 2432 states have internal predecessors, (4120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:12,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2433 states to 2433 states and 4120 transitions. [2022-02-10 02:45:12,474 INFO L78 Accepts]: Start accepts. Automaton has 2433 states and 4120 transitions. Word has length 30 [2022-02-10 02:45:12,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:45:12,474 INFO L470 AbstractCegarLoop]: Abstraction has 2433 states and 4120 transitions. [2022-02-10 02:45:12,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:12,474 INFO L276 IsEmpty]: Start isEmpty. Operand 2433 states and 4120 transitions. [2022-02-10 02:45:12,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-02-10 02:45:12,477 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:45:12,477 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:45:12,494 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-02-10 02:45:12,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:12,691 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:45:12,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:45:12,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1922507737, now seen corresponding path program 29 times [2022-02-10 02:45:12,692 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:45:12,692 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029893364] [2022-02-10 02:45:12,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:45:12,692 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:45:12,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:12,727 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-02-10 02:45:12,727 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:45:12,727 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029893364] [2022-02-10 02:45:12,727 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029893364] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:45:12,727 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1849684989] [2022-02-10 02:45:12,727 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:45:12,727 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:12,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:45:12,728 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:45:12,729 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-02-10 02:45:12,750 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-02-10 02:45:12,751 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:45:12,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 15 conjunts are in the unsatisfiable core [2022-02-10 02:45:12,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:45:12,833 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-02-10 02:45:12,833 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:45:12,920 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-02-10 02:45:12,920 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1849684989] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:45:12,920 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:45:12,920 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 4 [2022-02-10 02:45:12,921 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481391352] [2022-02-10 02:45:12,921 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:45:12,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-10 02:45:12,921 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:45:12,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-10 02:45:12,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-02-10 02:45:12,921 INFO L87 Difference]: Start difference. First operand 2433 states and 4120 transitions. Second operand has 6 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:12,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:45:12,968 INFO L93 Difference]: Finished difference Result 3139 states and 5280 transitions. [2022-02-10 02:45:12,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-10 02:45:12,969 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-02-10 02:45:12,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:45:12,973 INFO L225 Difference]: With dead ends: 3139 [2022-02-10 02:45:12,974 INFO L226 Difference]: Without dead ends: 3129 [2022-02-10 02:45:12,974 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 58 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-02-10 02:45:12,974 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 27 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 02:45:12,974 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 158 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 02:45:12,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3129 states. [2022-02-10 02:45:13,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3129 to 2667. [2022-02-10 02:45:13,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2667 states, 2666 states have (on average 1.703675918979745) internal successors, (4542), 2666 states have internal predecessors, (4542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:13,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2667 states to 2667 states and 4542 transitions. [2022-02-10 02:45:13,008 INFO L78 Accepts]: Start accepts. Automaton has 2667 states and 4542 transitions. Word has length 30 [2022-02-10 02:45:13,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:45:13,008 INFO L470 AbstractCegarLoop]: Abstraction has 2667 states and 4542 transitions. [2022-02-10 02:45:13,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:13,008 INFO L276 IsEmpty]: Start isEmpty. Operand 2667 states and 4542 transitions. [2022-02-10 02:45:13,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-02-10 02:45:13,011 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:45:13,011 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:45:13,030 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-02-10 02:45:13,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:13,215 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:45:13,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:45:13,215 INFO L85 PathProgramCache]: Analyzing trace with hash 1357741557, now seen corresponding path program 30 times [2022-02-10 02:45:13,215 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:45:13,215 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726799440] [2022-02-10 02:45:13,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:45:13,215 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:45:13,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:13,258 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-02-10 02:45:13,259 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:45:13,259 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726799440] [2022-02-10 02:45:13,259 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726799440] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:45:13,259 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [578521980] [2022-02-10 02:45:13,259 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:45:13,259 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:13,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:45:13,260 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:45:13,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-02-10 02:45:13,283 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-02-10 02:45:13,283 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:45:13,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 15 conjunts are in the unsatisfiable core [2022-02-10 02:45:13,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:45:13,372 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-02-10 02:45:13,372 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:45:13,461 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-02-10 02:45:13,461 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [578521980] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:45:13,461 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:45:13,461 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 4 [2022-02-10 02:45:13,461 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229499150] [2022-02-10 02:45:13,461 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:45:13,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-10 02:45:13,461 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:45:13,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-10 02:45:13,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-02-10 02:45:13,462 INFO L87 Difference]: Start difference. First operand 2667 states and 4542 transitions. Second operand has 6 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:13,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:45:13,539 INFO L93 Difference]: Finished difference Result 3499 states and 5908 transitions. [2022-02-10 02:45:13,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-10 02:45:13,540 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-02-10 02:45:13,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:45:13,544 INFO L225 Difference]: With dead ends: 3499 [2022-02-10 02:45:13,544 INFO L226 Difference]: Without dead ends: 3486 [2022-02-10 02:45:13,545 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 58 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-02-10 02:45:13,545 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 26 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:45:13,545 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 155 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:45:13,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3486 states. [2022-02-10 02:45:13,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3486 to 3180. [2022-02-10 02:45:13,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3180 states, 3179 states have (on average 1.7090279962252282) internal successors, (5433), 3179 states have internal predecessors, (5433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:13,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3180 states to 3180 states and 5433 transitions. [2022-02-10 02:45:13,587 INFO L78 Accepts]: Start accepts. Automaton has 3180 states and 5433 transitions. Word has length 30 [2022-02-10 02:45:13,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:45:13,587 INFO L470 AbstractCegarLoop]: Abstraction has 3180 states and 5433 transitions. [2022-02-10 02:45:13,587 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:13,587 INFO L276 IsEmpty]: Start isEmpty. Operand 3180 states and 5433 transitions. [2022-02-10 02:45:13,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-02-10 02:45:13,590 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:45:13,590 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:45:13,607 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2022-02-10 02:45:13,806 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2022-02-10 02:45:13,807 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:45:13,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:45:13,807 INFO L85 PathProgramCache]: Analyzing trace with hash -126426777, now seen corresponding path program 31 times [2022-02-10 02:45:13,807 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:45:13,807 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312966567] [2022-02-10 02:45:13,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:45:13,807 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:45:13,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:13,844 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 02:45:13,845 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:45:13,845 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312966567] [2022-02-10 02:45:13,845 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312966567] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:45:13,845 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [990736900] [2022-02-10 02:45:13,845 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:45:13,845 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:13,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:45:13,848 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:45:13,849 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-02-10 02:45:13,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:13,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 15 conjunts are in the unsatisfiable core [2022-02-10 02:45:13,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:45:13,954 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 02:45:13,955 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:45:14,036 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 02:45:14,037 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [990736900] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:45:14,037 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:45:14,037 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 4 [2022-02-10 02:45:14,037 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681041115] [2022-02-10 02:45:14,037 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:45:14,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-10 02:45:14,037 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:45:14,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-10 02:45:14,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-02-10 02:45:14,038 INFO L87 Difference]: Start difference. First operand 3180 states and 5433 transitions. Second operand has 6 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:14,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:45:14,083 INFO L93 Difference]: Finished difference Result 3697 states and 6247 transitions. [2022-02-10 02:45:14,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-10 02:45:14,083 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-02-10 02:45:14,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:45:14,090 INFO L225 Difference]: With dead ends: 3697 [2022-02-10 02:45:14,090 INFO L226 Difference]: Without dead ends: 3685 [2022-02-10 02:45:14,090 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 58 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-02-10 02:45:14,090 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 24 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 02:45:14,091 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 155 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 02:45:14,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3685 states. [2022-02-10 02:45:14,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3685 to 3591. [2022-02-10 02:45:14,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3591 states, 3590 states have (on average 1.7069637883008357) internal successors, (6128), 3590 states have internal predecessors, (6128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:14,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3591 states to 3591 states and 6128 transitions. [2022-02-10 02:45:14,146 INFO L78 Accepts]: Start accepts. Automaton has 3591 states and 6128 transitions. Word has length 30 [2022-02-10 02:45:14,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:45:14,146 INFO L470 AbstractCegarLoop]: Abstraction has 3591 states and 6128 transitions. [2022-02-10 02:45:14,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:14,147 INFO L276 IsEmpty]: Start isEmpty. Operand 3591 states and 6128 transitions. [2022-02-10 02:45:14,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-10 02:45:14,152 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:45:14,153 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:45:14,186 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-02-10 02:45:14,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-02-10 02:45:14,371 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:45:14,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:45:14,371 INFO L85 PathProgramCache]: Analyzing trace with hash 1837566094, now seen corresponding path program 32 times [2022-02-10 02:45:14,371 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:45:14,371 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317153160] [2022-02-10 02:45:14,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:45:14,372 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:45:14,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:14,421 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 12 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:14,421 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:45:14,422 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317153160] [2022-02-10 02:45:14,422 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317153160] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:45:14,422 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1309079217] [2022-02-10 02:45:14,422 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:45:14,422 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:14,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:45:14,436 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:45:14,441 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-02-10 02:45:14,461 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:45:14,461 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:45:14,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-10 02:45:14,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:45:14,560 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 12 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:14,561 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:45:14,645 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 12 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:14,645 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1309079217] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:45:14,645 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:45:14,645 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 15 [2022-02-10 02:45:14,646 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051290284] [2022-02-10 02:45:14,646 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:45:14,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-10 02:45:14,646 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:45:14,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-10 02:45:14,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2022-02-10 02:45:14,646 INFO L87 Difference]: Start difference. First operand 3591 states and 6128 transitions. Second operand has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 15 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:14,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:45:14,802 INFO L93 Difference]: Finished difference Result 5002 states and 8452 transitions. [2022-02-10 02:45:14,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-10 02:45:14,802 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 15 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-10 02:45:14,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:45:14,810 INFO L225 Difference]: With dead ends: 5002 [2022-02-10 02:45:14,811 INFO L226 Difference]: Without dead ends: 5002 [2022-02-10 02:45:14,811 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 60 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=185, Invalid=415, Unknown=0, NotChecked=0, Total=600 [2022-02-10 02:45:14,811 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 77 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:45:14,812 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 174 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:45:14,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5002 states. [2022-02-10 02:45:14,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5002 to 3735. [2022-02-10 02:45:14,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3735 states, 3734 states have (on average 1.7072844134975897) internal successors, (6375), 3734 states have internal predecessors, (6375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:14,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3735 states to 3735 states and 6375 transitions. [2022-02-10 02:45:14,870 INFO L78 Accepts]: Start accepts. Automaton has 3735 states and 6375 transitions. Word has length 33 [2022-02-10 02:45:14,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:45:14,870 INFO L470 AbstractCegarLoop]: Abstraction has 3735 states and 6375 transitions. [2022-02-10 02:45:14,870 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 15 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:14,870 INFO L276 IsEmpty]: Start isEmpty. Operand 3735 states and 6375 transitions. [2022-02-10 02:45:14,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-10 02:45:14,875 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:45:14,875 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:45:14,907 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2022-02-10 02:45:15,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:15,092 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:45:15,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:45:15,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1546067598, now seen corresponding path program 33 times [2022-02-10 02:45:15,093 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:45:15,093 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43578003] [2022-02-10 02:45:15,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:45:15,093 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:45:15,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:15,137 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 22 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:15,137 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:45:15,137 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43578003] [2022-02-10 02:45:15,137 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43578003] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:45:15,137 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1651627061] [2022-02-10 02:45:15,137 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:45:15,137 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:15,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:45:15,139 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:45:15,139 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-02-10 02:45:15,160 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-02-10 02:45:15,160 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:45:15,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-10 02:45:15,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:45:15,256 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 22 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:15,256 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:45:15,306 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 22 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:15,307 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1651627061] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:45:15,307 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:45:15,307 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 15 [2022-02-10 02:45:15,307 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374612865] [2022-02-10 02:45:15,307 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:45:15,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-10 02:45:15,307 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:45:15,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-10 02:45:15,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2022-02-10 02:45:15,308 INFO L87 Difference]: Start difference. First operand 3735 states and 6375 transitions. Second operand has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 15 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:15,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:45:15,435 INFO L93 Difference]: Finished difference Result 5073 states and 8411 transitions. [2022-02-10 02:45:15,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-10 02:45:15,435 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 15 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-10 02:45:15,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:45:15,441 INFO L225 Difference]: With dead ends: 5073 [2022-02-10 02:45:15,441 INFO L226 Difference]: Without dead ends: 5061 [2022-02-10 02:45:15,442 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=161, Invalid=439, Unknown=0, NotChecked=0, Total=600 [2022-02-10 02:45:15,442 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 84 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:45:15,442 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 121 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:45:15,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5061 states. [2022-02-10 02:45:15,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5061 to 3735. [2022-02-10 02:45:15,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3735 states, 3734 states have (on average 1.7070166041778254) internal successors, (6374), 3734 states have internal predecessors, (6374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:15,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3735 states to 3735 states and 6374 transitions. [2022-02-10 02:45:15,520 INFO L78 Accepts]: Start accepts. Automaton has 3735 states and 6374 transitions. Word has length 33 [2022-02-10 02:45:15,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:45:15,520 INFO L470 AbstractCegarLoop]: Abstraction has 3735 states and 6374 transitions. [2022-02-10 02:45:15,520 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 15 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:15,520 INFO L276 IsEmpty]: Start isEmpty. Operand 3735 states and 6374 transitions. [2022-02-10 02:45:15,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-10 02:45:15,530 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:45:15,531 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:45:15,551 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2022-02-10 02:45:15,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-02-10 02:45:15,731 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:45:15,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:45:15,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1028058352, now seen corresponding path program 34 times [2022-02-10 02:45:15,732 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:45:15,732 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549359056] [2022-02-10 02:45:15,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:45:15,732 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:45:15,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:15,779 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 9 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:15,779 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:45:15,779 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549359056] [2022-02-10 02:45:15,779 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549359056] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:45:15,779 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1103752187] [2022-02-10 02:45:15,779 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:45:15,779 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:15,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:45:15,788 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:45:15,789 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-02-10 02:45:15,810 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:45:15,810 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:45:15,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-10 02:45:15,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:45:15,925 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 12 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:15,925 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:45:15,978 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 9 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:15,978 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1103752187] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:45:15,978 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:45:15,978 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 16 [2022-02-10 02:45:15,978 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400126304] [2022-02-10 02:45:15,978 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:45:15,979 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-10 02:45:15,979 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:45:15,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-10 02:45:15,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2022-02-10 02:45:15,979 INFO L87 Difference]: Start difference. First operand 3735 states and 6374 transitions. Second operand has 16 states, 16 states have (on average 3.0625) internal successors, (49), 16 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:16,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:45:16,200 INFO L93 Difference]: Finished difference Result 5054 states and 8421 transitions. [2022-02-10 02:45:16,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-10 02:45:16,200 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.0625) internal successors, (49), 16 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-10 02:45:16,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:45:16,205 INFO L225 Difference]: With dead ends: 5054 [2022-02-10 02:45:16,206 INFO L226 Difference]: Without dead ends: 5054 [2022-02-10 02:45:16,206 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=280, Invalid=590, Unknown=0, NotChecked=0, Total=870 [2022-02-10 02:45:16,206 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 103 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:45:16,207 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 174 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:45:16,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5054 states. [2022-02-10 02:45:16,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5054 to 3803. [2022-02-10 02:45:16,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3803 states, 3802 states have (on average 1.7088374539715938) internal successors, (6497), 3802 states have internal predecessors, (6497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:16,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3803 states to 3803 states and 6497 transitions. [2022-02-10 02:45:16,257 INFO L78 Accepts]: Start accepts. Automaton has 3803 states and 6497 transitions. Word has length 33 [2022-02-10 02:45:16,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:45:16,257 INFO L470 AbstractCegarLoop]: Abstraction has 3803 states and 6497 transitions. [2022-02-10 02:45:16,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.0625) internal successors, (49), 16 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:16,257 INFO L276 IsEmpty]: Start isEmpty. Operand 3803 states and 6497 transitions. [2022-02-10 02:45:16,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-10 02:45:16,261 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:45:16,261 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:45:16,278 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2022-02-10 02:45:16,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-02-10 02:45:16,476 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:45:16,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:45:16,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1491452494, now seen corresponding path program 35 times [2022-02-10 02:45:16,476 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:45:16,476 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068218333] [2022-02-10 02:45:16,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:45:16,476 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:45:16,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:16,531 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 19 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:16,531 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:45:16,531 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068218333] [2022-02-10 02:45:16,531 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068218333] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:45:16,531 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [910606106] [2022-02-10 02:45:16,531 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:45:16,531 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:16,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:45:16,533 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:45:16,534 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-02-10 02:45:16,557 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-10 02:45:16,557 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:45:16,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-10 02:45:16,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:45:16,678 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 19 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:16,678 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:45:16,732 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 19 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:16,732 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [910606106] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:45:16,732 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:45:16,732 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 16 [2022-02-10 02:45:16,732 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044685911] [2022-02-10 02:45:16,732 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:45:16,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-10 02:45:16,733 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:45:16,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-10 02:45:16,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2022-02-10 02:45:16,733 INFO L87 Difference]: Start difference. First operand 3803 states and 6497 transitions. Second operand has 16 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:16,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:45:16,993 INFO L93 Difference]: Finished difference Result 5168 states and 8560 transitions. [2022-02-10 02:45:16,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-10 02:45:16,994 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-10 02:45:16,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:45:16,999 INFO L225 Difference]: With dead ends: 5168 [2022-02-10 02:45:16,999 INFO L226 Difference]: Without dead ends: 5157 [2022-02-10 02:45:17,000 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=247, Invalid=683, Unknown=0, NotChecked=0, Total=930 [2022-02-10 02:45:17,000 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 198 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:45:17,000 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [198 Valid, 92 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:45:17,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5157 states. [2022-02-10 02:45:17,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5157 to 4219. [2022-02-10 02:45:17,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4219 states, 4218 states have (on average 1.7100521574205785) internal successors, (7213), 4218 states have internal predecessors, (7213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:17,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4219 states to 4219 states and 7213 transitions. [2022-02-10 02:45:17,054 INFO L78 Accepts]: Start accepts. Automaton has 4219 states and 7213 transitions. Word has length 33 [2022-02-10 02:45:17,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:45:17,054 INFO L470 AbstractCegarLoop]: Abstraction has 4219 states and 7213 transitions. [2022-02-10 02:45:17,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:17,054 INFO L276 IsEmpty]: Start isEmpty. Operand 4219 states and 7213 transitions. [2022-02-10 02:45:17,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-10 02:45:17,059 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:45:17,059 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:45:17,085 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2022-02-10 02:45:17,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-02-10 02:45:17,276 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:45:17,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:45:17,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1332317392, now seen corresponding path program 36 times [2022-02-10 02:45:17,277 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:45:17,277 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010742932] [2022-02-10 02:45:17,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:45:17,277 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:45:17,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:17,320 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 9 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:17,321 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:45:17,321 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010742932] [2022-02-10 02:45:17,321 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010742932] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:45:17,321 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [598004183] [2022-02-10 02:45:17,321 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:45:17,321 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:17,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:45:17,322 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:45:17,323 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-02-10 02:45:17,344 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-02-10 02:45:17,344 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:45:17,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-10 02:45:17,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:45:17,452 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 12 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:17,453 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:45:17,505 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 9 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:17,505 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [598004183] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:45:17,505 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:45:17,505 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 16 [2022-02-10 02:45:17,506 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189845581] [2022-02-10 02:45:17,506 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:45:17,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-10 02:45:17,506 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:45:17,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-10 02:45:17,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2022-02-10 02:45:17,507 INFO L87 Difference]: Start difference. First operand 4219 states and 7213 transitions. Second operand has 16 states, 16 states have (on average 3.0625) internal successors, (49), 16 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:17,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:45:17,968 INFO L93 Difference]: Finished difference Result 5743 states and 9557 transitions. [2022-02-10 02:45:17,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-02-10 02:45:17,968 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.0625) internal successors, (49), 16 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-10 02:45:17,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:45:17,974 INFO L225 Difference]: With dead ends: 5743 [2022-02-10 02:45:17,974 INFO L226 Difference]: Without dead ends: 5743 [2022-02-10 02:45:17,975 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 527 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=775, Invalid=1675, Unknown=0, NotChecked=0, Total=2450 [2022-02-10 02:45:17,975 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 108 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:45:17,975 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 224 Invalid, 401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:45:17,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5743 states. [2022-02-10 02:45:18,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5743 to 4356. [2022-02-10 02:45:18,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4356 states, 4355 states have (on average 1.7111366245694604) internal successors, (7452), 4355 states have internal predecessors, (7452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:18,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4356 states to 4356 states and 7452 transitions. [2022-02-10 02:45:18,035 INFO L78 Accepts]: Start accepts. Automaton has 4356 states and 7452 transitions. Word has length 33 [2022-02-10 02:45:18,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:45:18,036 INFO L470 AbstractCegarLoop]: Abstraction has 4356 states and 7452 transitions. [2022-02-10 02:45:18,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.0625) internal successors, (49), 16 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:18,036 INFO L276 IsEmpty]: Start isEmpty. Operand 4356 states and 7452 transitions. [2022-02-10 02:45:18,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-10 02:45:18,040 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:45:18,040 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:45:18,063 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2022-02-10 02:45:18,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:18,241 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:45:18,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:45:18,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1438078546, now seen corresponding path program 37 times [2022-02-10 02:45:18,241 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:45:18,241 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693733174] [2022-02-10 02:45:18,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:45:18,241 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:45:18,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:18,292 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 14 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:18,293 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:45:18,293 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693733174] [2022-02-10 02:45:18,293 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693733174] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:45:18,293 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [221328526] [2022-02-10 02:45:18,293 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:45:18,293 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:18,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:45:18,294 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:45:18,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-02-10 02:45:18,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:18,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-10 02:45:18,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:45:18,409 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 14 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:18,409 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:45:18,467 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 14 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:18,467 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [221328526] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:45:18,467 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:45:18,467 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 16 [2022-02-10 02:45:18,467 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810866371] [2022-02-10 02:45:18,467 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:45:18,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-10 02:45:18,468 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:45:18,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-10 02:45:18,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2022-02-10 02:45:18,468 INFO L87 Difference]: Start difference. First operand 4356 states and 7452 transitions. Second operand has 16 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:18,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:45:18,739 INFO L93 Difference]: Finished difference Result 7107 states and 11821 transitions. [2022-02-10 02:45:18,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-02-10 02:45:18,739 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-10 02:45:18,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:45:18,747 INFO L225 Difference]: With dead ends: 7107 [2022-02-10 02:45:18,747 INFO L226 Difference]: Without dead ends: 7092 [2022-02-10 02:45:18,748 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=308, Invalid=882, Unknown=0, NotChecked=0, Total=1190 [2022-02-10 02:45:18,748 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 220 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:45:18,748 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [220 Valid, 137 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:45:18,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7092 states. [2022-02-10 02:45:18,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7092 to 5349. [2022-02-10 02:45:18,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5349 states, 5348 states have (on average 1.7243829468960359) internal successors, (9222), 5348 states have internal predecessors, (9222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:18,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5349 states to 5349 states and 9222 transitions. [2022-02-10 02:45:18,841 INFO L78 Accepts]: Start accepts. Automaton has 5349 states and 9222 transitions. Word has length 33 [2022-02-10 02:45:18,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:45:18,841 INFO L470 AbstractCegarLoop]: Abstraction has 5349 states and 9222 transitions. [2022-02-10 02:45:18,841 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:18,841 INFO L276 IsEmpty]: Start isEmpty. Operand 5349 states and 9222 transitions. [2022-02-10 02:45:18,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-10 02:45:18,847 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:45:18,847 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:45:18,863 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2022-02-10 02:45:19,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:19,063 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:45:19,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:45:19,064 INFO L85 PathProgramCache]: Analyzing trace with hash -1885432592, now seen corresponding path program 38 times [2022-02-10 02:45:19,064 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:45:19,064 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203243654] [2022-02-10 02:45:19,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:45:19,064 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:45:19,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:19,113 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 9 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:19,113 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:45:19,113 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203243654] [2022-02-10 02:45:19,113 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203243654] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:45:19,113 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [504764514] [2022-02-10 02:45:19,113 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:45:19,114 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:19,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:45:19,115 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:45:19,116 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-02-10 02:45:19,136 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:45:19,136 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:45:19,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-10 02:45:19,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:45:19,243 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 12 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:19,243 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:45:19,295 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 9 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:19,295 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [504764514] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:45:19,295 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:45:19,296 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 16 [2022-02-10 02:45:19,296 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6799119] [2022-02-10 02:45:19,296 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:45:19,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-10 02:45:19,296 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:45:19,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-10 02:45:19,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2022-02-10 02:45:19,296 INFO L87 Difference]: Start difference. First operand 5349 states and 9222 transitions. Second operand has 16 states, 16 states have (on average 3.0625) internal successors, (49), 16 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:19,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:45:19,890 INFO L93 Difference]: Finished difference Result 7469 states and 12571 transitions. [2022-02-10 02:45:19,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-02-10 02:45:19,890 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.0625) internal successors, (49), 16 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-10 02:45:19,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:45:19,901 INFO L225 Difference]: With dead ends: 7469 [2022-02-10 02:45:19,901 INFO L226 Difference]: Without dead ends: 7469 [2022-02-10 02:45:19,902 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 716 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=981, Invalid=2099, Unknown=0, NotChecked=0, Total=3080 [2022-02-10 02:45:19,902 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 146 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 485 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:45:19,902 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [146 Valid, 269 Invalid, 530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 485 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:45:19,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7469 states. [2022-02-10 02:45:19,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7469 to 5556. [2022-02-10 02:45:19,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5556 states, 5555 states have (on average 1.7251125112511252) internal successors, (9583), 5555 states have internal predecessors, (9583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:20,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5556 states to 5556 states and 9583 transitions. [2022-02-10 02:45:20,001 INFO L78 Accepts]: Start accepts. Automaton has 5556 states and 9583 transitions. Word has length 33 [2022-02-10 02:45:20,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:45:20,001 INFO L470 AbstractCegarLoop]: Abstraction has 5556 states and 9583 transitions. [2022-02-10 02:45:20,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.0625) internal successors, (49), 16 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:20,001 INFO L276 IsEmpty]: Start isEmpty. Operand 5556 states and 9583 transitions. [2022-02-10 02:45:20,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-10 02:45:20,008 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:45:20,008 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:45:20,026 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2022-02-10 02:45:20,217 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2022-02-10 02:45:20,218 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:45:20,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:45:20,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1801854770, now seen corresponding path program 39 times [2022-02-10 02:45:20,218 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:45:20,218 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253830903] [2022-02-10 02:45:20,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:45:20,218 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:45:20,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:20,269 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 15 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:20,269 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:45:20,270 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253830903] [2022-02-10 02:45:20,270 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253830903] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:45:20,270 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [751248235] [2022-02-10 02:45:20,270 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:45:20,270 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:20,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:45:20,271 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:45:20,287 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-02-10 02:45:20,306 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-10 02:45:20,306 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:45:20,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-10 02:45:20,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:45:20,408 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 15 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:20,408 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:45:20,459 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 15 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:20,459 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [751248235] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:45:20,459 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:45:20,460 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 16 [2022-02-10 02:45:20,460 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828024137] [2022-02-10 02:45:20,460 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:45:20,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-10 02:45:20,460 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:45:20,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-10 02:45:20,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2022-02-10 02:45:20,460 INFO L87 Difference]: Start difference. First operand 5556 states and 9583 transitions. Second operand has 16 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:20,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:45:20,736 INFO L93 Difference]: Finished difference Result 7785 states and 13057 transitions. [2022-02-10 02:45:20,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-02-10 02:45:20,737 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-10 02:45:20,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:45:20,749 INFO L225 Difference]: With dead ends: 7785 [2022-02-10 02:45:20,749 INFO L226 Difference]: Without dead ends: 7772 [2022-02-10 02:45:20,750 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=326, Invalid=864, Unknown=0, NotChecked=0, Total=1190 [2022-02-10 02:45:20,750 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 198 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:45:20,750 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [198 Valid, 146 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:45:20,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7772 states. [2022-02-10 02:45:20,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7772 to 6159. [2022-02-10 02:45:20,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6159 states, 6158 states have (on average 1.7184150698278662) internal successors, (10582), 6158 states have internal predecessors, (10582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:20,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6159 states to 6159 states and 10582 transitions. [2022-02-10 02:45:20,880 INFO L78 Accepts]: Start accepts. Automaton has 6159 states and 10582 transitions. Word has length 33 [2022-02-10 02:45:20,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:45:20,881 INFO L470 AbstractCegarLoop]: Abstraction has 6159 states and 10582 transitions. [2022-02-10 02:45:20,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:20,881 INFO L276 IsEmpty]: Start isEmpty. Operand 6159 states and 10582 transitions. [2022-02-10 02:45:20,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-10 02:45:20,888 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:45:20,888 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:45:20,904 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2022-02-10 02:45:21,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2022-02-10 02:45:21,088 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:45:21,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:45:21,089 INFO L85 PathProgramCache]: Analyzing trace with hash 1558460462, now seen corresponding path program 40 times [2022-02-10 02:45:21,089 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:45:21,089 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815538583] [2022-02-10 02:45:21,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:45:21,089 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:45:21,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:21,134 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 22 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:21,134 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:45:21,135 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815538583] [2022-02-10 02:45:21,135 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815538583] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:45:21,135 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [770892514] [2022-02-10 02:45:21,135 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:45:21,135 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:21,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:45:21,136 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:45:21,137 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-02-10 02:45:21,157 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:45:21,157 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:45:21,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-10 02:45:21,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:45:21,261 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 22 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:21,261 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:45:21,309 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 22 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:21,309 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [770892514] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:45:21,309 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:45:21,310 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 16 [2022-02-10 02:45:21,310 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662159884] [2022-02-10 02:45:21,310 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:45:21,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-10 02:45:21,310 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:45:21,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-10 02:45:21,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2022-02-10 02:45:21,310 INFO L87 Difference]: Start difference. First operand 6159 states and 10582 transitions. Second operand has 16 states, 16 states have (on average 2.8125) internal successors, (45), 16 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:21,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:45:21,818 INFO L93 Difference]: Finished difference Result 8035 states and 13298 transitions. [2022-02-10 02:45:21,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-02-10 02:45:21,818 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.8125) internal successors, (45), 16 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-10 02:45:21,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:45:21,830 INFO L225 Difference]: With dead ends: 8035 [2022-02-10 02:45:21,831 INFO L226 Difference]: Without dead ends: 8030 [2022-02-10 02:45:21,832 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 804 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=804, Invalid=1952, Unknown=0, NotChecked=0, Total=2756 [2022-02-10 02:45:21,832 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 234 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:45:21,832 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [234 Valid, 175 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:45:21,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8030 states. [2022-02-10 02:45:21,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8030 to 5830. [2022-02-10 02:45:21,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5830 states, 5829 states have (on average 1.702350317378624) internal successors, (9923), 5829 states have internal predecessors, (9923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:21,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5830 states to 5830 states and 9923 transitions. [2022-02-10 02:45:21,965 INFO L78 Accepts]: Start accepts. Automaton has 5830 states and 9923 transitions. Word has length 33 [2022-02-10 02:45:21,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:45:21,965 INFO L470 AbstractCegarLoop]: Abstraction has 5830 states and 9923 transitions. [2022-02-10 02:45:21,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.8125) internal successors, (45), 16 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:21,965 INFO L276 IsEmpty]: Start isEmpty. Operand 5830 states and 9923 transitions. [2022-02-10 02:45:21,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-10 02:45:21,971 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:45:21,971 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:45:21,989 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2022-02-10 02:45:22,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2022-02-10 02:45:22,173 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:45:22,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:45:22,174 INFO L85 PathProgramCache]: Analyzing trace with hash 1910187214, now seen corresponding path program 41 times [2022-02-10 02:45:22,174 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:45:22,174 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802241058] [2022-02-10 02:45:22,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:45:22,174 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:45:22,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:22,216 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 19 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:22,216 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:45:22,216 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802241058] [2022-02-10 02:45:22,216 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802241058] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:45:22,216 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1260429902] [2022-02-10 02:45:22,216 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:45:22,217 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:22,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:45:22,232 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:45:22,234 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-02-10 02:45:22,257 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-02-10 02:45:22,257 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:45:22,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-10 02:45:22,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:45:22,358 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 22 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:22,358 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:45:22,408 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 19 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:22,408 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1260429902] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:45:22,408 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:45:22,408 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 16 [2022-02-10 02:45:22,408 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875561946] [2022-02-10 02:45:22,409 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:45:22,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-10 02:45:22,409 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:45:22,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-10 02:45:22,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2022-02-10 02:45:22,409 INFO L87 Difference]: Start difference. First operand 5830 states and 9923 transitions. Second operand has 16 states, 16 states have (on average 2.8125) internal successors, (45), 16 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:22,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:45:22,882 INFO L93 Difference]: Finished difference Result 7020 states and 11782 transitions. [2022-02-10 02:45:22,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-02-10 02:45:22,883 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.8125) internal successors, (45), 16 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-10 02:45:22,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:45:22,894 INFO L225 Difference]: With dead ends: 7020 [2022-02-10 02:45:22,894 INFO L226 Difference]: Without dead ends: 7018 [2022-02-10 02:45:22,895 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 472 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=781, Invalid=1475, Unknown=0, NotChecked=0, Total=2256 [2022-02-10 02:45:22,895 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 165 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:45:22,896 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [165 Valid, 214 Invalid, 410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 380 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:45:22,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7018 states. [2022-02-10 02:45:22,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7018 to 5636. [2022-02-10 02:45:22,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5636 states, 5635 states have (on average 1.698846495119787) internal successors, (9573), 5635 states have internal predecessors, (9573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:22,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5636 states to 5636 states and 9573 transitions. [2022-02-10 02:45:22,978 INFO L78 Accepts]: Start accepts. Automaton has 5636 states and 9573 transitions. Word has length 33 [2022-02-10 02:45:22,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:45:22,978 INFO L470 AbstractCegarLoop]: Abstraction has 5636 states and 9573 transitions. [2022-02-10 02:45:22,978 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.8125) internal successors, (45), 16 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:22,978 INFO L276 IsEmpty]: Start isEmpty. Operand 5636 states and 9573 transitions. [2022-02-10 02:45:22,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-10 02:45:22,983 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:45:22,983 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:45:23,007 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2022-02-10 02:45:23,183 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2022-02-10 02:45:23,183 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:45:23,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:45:23,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1185046620, now seen corresponding path program 42 times [2022-02-10 02:45:23,184 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:45:23,184 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800962449] [2022-02-10 02:45:23,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:45:23,184 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:45:23,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:23,251 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 5 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:23,251 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:45:23,251 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800962449] [2022-02-10 02:45:23,251 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800962449] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:45:23,251 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [460250943] [2022-02-10 02:45:23,251 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:45:23,251 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:23,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:45:23,252 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:45:23,253 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-02-10 02:45:23,301 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-02-10 02:45:23,302 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:45:23,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-10 02:45:23,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:45:23,453 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 12 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:23,453 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:45:23,507 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 5 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:23,507 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [460250943] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:45:23,507 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:45:23,507 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2022-02-10 02:45:23,508 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301028910] [2022-02-10 02:45:23,508 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:45:23,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-10 02:45:23,508 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:45:23,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-10 02:45:23,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2022-02-10 02:45:23,508 INFO L87 Difference]: Start difference. First operand 5636 states and 9573 transitions. Second operand has 17 states, 17 states have (on average 3.0) internal successors, (51), 17 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:23,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:45:23,965 INFO L93 Difference]: Finished difference Result 7049 states and 11728 transitions. [2022-02-10 02:45:23,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-02-10 02:45:23,965 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.0) internal successors, (51), 17 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-10 02:45:23,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:45:23,974 INFO L225 Difference]: With dead ends: 7049 [2022-02-10 02:45:23,974 INFO L226 Difference]: Without dead ends: 7038 [2022-02-10 02:45:23,975 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 59 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 440 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=631, Invalid=1439, Unknown=0, NotChecked=0, Total=2070 [2022-02-10 02:45:23,975 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 101 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:45:23,976 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 201 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 333 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:45:23,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7038 states. [2022-02-10 02:45:24,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7038 to 5617. [2022-02-10 02:45:24,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5617 states, 5616 states have (on average 1.6972934472934473) internal successors, (9532), 5616 states have internal predecessors, (9532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:24,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5617 states to 5617 states and 9532 transitions. [2022-02-10 02:45:24,052 INFO L78 Accepts]: Start accepts. Automaton has 5617 states and 9532 transitions. Word has length 33 [2022-02-10 02:45:24,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:45:24,052 INFO L470 AbstractCegarLoop]: Abstraction has 5617 states and 9532 transitions. [2022-02-10 02:45:24,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.0) internal successors, (51), 17 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:24,052 INFO L276 IsEmpty]: Start isEmpty. Operand 5617 states and 9532 transitions. [2022-02-10 02:45:24,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-10 02:45:24,057 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:45:24,057 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:45:24,075 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2022-02-10 02:45:24,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:24,275 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:45:24,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:45:24,276 INFO L85 PathProgramCache]: Analyzing trace with hash -2001600968, now seen corresponding path program 43 times [2022-02-10 02:45:24,276 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:45:24,276 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486251634] [2022-02-10 02:45:24,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:45:24,276 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:45:24,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:24,319 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 5 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:24,319 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:45:24,319 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486251634] [2022-02-10 02:45:24,319 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486251634] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:45:24,319 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [263939883] [2022-02-10 02:45:24,319 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:45:24,319 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:24,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:45:24,320 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:45:24,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2022-02-10 02:45:24,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:24,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-10 02:45:24,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:45:24,458 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 12 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:24,458 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:45:24,513 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 5 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:24,513 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [263939883] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:45:24,513 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:45:24,513 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 10] total 16 [2022-02-10 02:45:24,513 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61165061] [2022-02-10 02:45:24,514 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:45:24,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-10 02:45:24,514 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:45:24,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-10 02:45:24,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2022-02-10 02:45:24,514 INFO L87 Difference]: Start difference. First operand 5617 states and 9532 transitions. Second operand has 16 states, 16 states have (on average 3.1875) internal successors, (51), 16 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:24,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:45:24,999 INFO L93 Difference]: Finished difference Result 7468 states and 12441 transitions. [2022-02-10 02:45:25,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-02-10 02:45:25,004 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.1875) internal successors, (51), 16 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-10 02:45:25,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:45:25,019 INFO L225 Difference]: With dead ends: 7468 [2022-02-10 02:45:25,019 INFO L226 Difference]: Without dead ends: 7464 [2022-02-10 02:45:25,021 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 450 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=640, Invalid=1430, Unknown=0, NotChecked=0, Total=2070 [2022-02-10 02:45:25,021 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 108 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:45:25,021 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 195 Invalid, 393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 360 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:45:25,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7464 states. [2022-02-10 02:45:25,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7464 to 5767. [2022-02-10 02:45:25,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5767 states, 5766 states have (on average 1.7001387443635103) internal successors, (9803), 5766 states have internal predecessors, (9803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:25,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5767 states to 5767 states and 9803 transitions. [2022-02-10 02:45:25,112 INFO L78 Accepts]: Start accepts. Automaton has 5767 states and 9803 transitions. Word has length 33 [2022-02-10 02:45:25,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:45:25,112 INFO L470 AbstractCegarLoop]: Abstraction has 5767 states and 9803 transitions. [2022-02-10 02:45:25,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.1875) internal successors, (51), 16 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:25,112 INFO L276 IsEmpty]: Start isEmpty. Operand 5767 states and 9803 transitions. [2022-02-10 02:45:25,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-10 02:45:25,117 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:45:25,117 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:45:25,134 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2022-02-10 02:45:25,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2022-02-10 02:45:25,335 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:45:25,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:45:25,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1161316388, now seen corresponding path program 44 times [2022-02-10 02:45:25,335 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:45:25,335 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986099598] [2022-02-10 02:45:25,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:45:25,335 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:45:25,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:25,373 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 5 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:25,373 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:45:25,373 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986099598] [2022-02-10 02:45:25,373 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986099598] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:45:25,373 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [90636562] [2022-02-10 02:45:25,373 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:45:25,373 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:25,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:45:25,375 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:45:25,375 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2022-02-10 02:45:25,394 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:45:25,394 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:45:25,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-10 02:45:25,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:45:25,516 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 12 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:25,516 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:45:25,564 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 5 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:25,565 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [90636562] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:45:25,565 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:45:25,565 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 10] total 16 [2022-02-10 02:45:25,565 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319232560] [2022-02-10 02:45:25,565 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:45:25,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-10 02:45:25,565 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:45:25,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-10 02:45:25,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2022-02-10 02:45:25,566 INFO L87 Difference]: Start difference. First operand 5767 states and 9803 transitions. Second operand has 16 states, 16 states have (on average 3.1875) internal successors, (51), 16 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:26,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:45:26,112 INFO L93 Difference]: Finished difference Result 8511 states and 14283 transitions. [2022-02-10 02:45:26,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-02-10 02:45:26,112 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.1875) internal successors, (51), 16 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-10 02:45:26,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:45:26,121 INFO L225 Difference]: With dead ends: 8511 [2022-02-10 02:45:26,121 INFO L226 Difference]: Without dead ends: 8511 [2022-02-10 02:45:26,121 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 721 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=933, Invalid=1929, Unknown=0, NotChecked=0, Total=2862 [2022-02-10 02:45:26,122 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 149 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 510 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:45:26,122 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [149 Valid, 263 Invalid, 554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 510 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:45:26,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8511 states. [2022-02-10 02:45:26,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8511 to 5860. [2022-02-10 02:45:26,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5860 states, 5859 states have (on average 1.7033623485236389) internal successors, (9980), 5859 states have internal predecessors, (9980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:26,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5860 states to 5860 states and 9980 transitions. [2022-02-10 02:45:26,229 INFO L78 Accepts]: Start accepts. Automaton has 5860 states and 9980 transitions. Word has length 33 [2022-02-10 02:45:26,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:45:26,229 INFO L470 AbstractCegarLoop]: Abstraction has 5860 states and 9980 transitions. [2022-02-10 02:45:26,229 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.1875) internal successors, (51), 16 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:26,229 INFO L276 IsEmpty]: Start isEmpty. Operand 5860 states and 9980 transitions. [2022-02-10 02:45:26,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-10 02:45:26,234 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:45:26,234 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:45:26,255 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2022-02-10 02:45:26,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2022-02-10 02:45:26,447 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:45:26,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:45:26,448 INFO L85 PathProgramCache]: Analyzing trace with hash -462748270, now seen corresponding path program 45 times [2022-02-10 02:45:26,448 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:45:26,448 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170145838] [2022-02-10 02:45:26,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:45:26,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:45:26,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:26,501 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 14 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:26,501 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:45:26,501 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170145838] [2022-02-10 02:45:26,501 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170145838] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:45:26,501 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1696289766] [2022-02-10 02:45:26,501 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:45:26,501 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:26,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:45:26,502 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:45:26,503 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2022-02-10 02:45:26,524 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-02-10 02:45:26,524 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:45:26,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-10 02:45:26,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:45:26,646 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 22 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:26,646 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:45:26,695 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 14 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:26,696 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1696289766] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:45:26,696 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:45:26,696 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2022-02-10 02:45:26,696 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654527441] [2022-02-10 02:45:26,696 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:45:26,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-10 02:45:26,696 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:45:26,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-10 02:45:26,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2022-02-10 02:45:26,697 INFO L87 Difference]: Start difference. First operand 5860 states and 9980 transitions. Second operand has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:27,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:45:27,131 INFO L93 Difference]: Finished difference Result 7947 states and 13344 transitions. [2022-02-10 02:45:27,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-02-10 02:45:27,132 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-10 02:45:27,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:45:27,144 INFO L225 Difference]: With dead ends: 7947 [2022-02-10 02:45:27,144 INFO L226 Difference]: Without dead ends: 7938 [2022-02-10 02:45:27,145 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 59 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 567 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=776, Invalid=1674, Unknown=0, NotChecked=0, Total=2450 [2022-02-10 02:45:27,145 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 212 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:45:27,146 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [212 Valid, 166 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:45:27,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7938 states. [2022-02-10 02:45:27,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7938 to 5425. [2022-02-10 02:45:27,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5425 states, 5424 states have (on average 1.6969026548672566) internal successors, (9204), 5424 states have internal predecessors, (9204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:27,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5425 states to 5425 states and 9204 transitions. [2022-02-10 02:45:27,258 INFO L78 Accepts]: Start accepts. Automaton has 5425 states and 9204 transitions. Word has length 33 [2022-02-10 02:45:27,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:45:27,258 INFO L470 AbstractCegarLoop]: Abstraction has 5425 states and 9204 transitions. [2022-02-10 02:45:27,259 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:27,259 INFO L276 IsEmpty]: Start isEmpty. Operand 5425 states and 9204 transitions. [2022-02-10 02:45:27,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-10 02:45:27,264 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:45:27,264 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:45:27,284 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2022-02-10 02:45:27,466 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2022-02-10 02:45:27,466 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:45:27,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:45:27,466 INFO L85 PathProgramCache]: Analyzing trace with hash -1515413354, now seen corresponding path program 46 times [2022-02-10 02:45:27,467 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:45:27,467 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139505172] [2022-02-10 02:45:27,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:45:27,467 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:45:27,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:27,516 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:27,516 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:45:27,516 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139505172] [2022-02-10 02:45:27,516 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139505172] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:45:27,516 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1748004619] [2022-02-10 02:45:27,516 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:45:27,516 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:27,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:45:27,517 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:45:27,518 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2022-02-10 02:45:27,538 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:45:27,538 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:45:27,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-10 02:45:27,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:45:27,662 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 12 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:27,663 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:45:27,721 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:27,722 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1748004619] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:45:27,722 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:45:27,722 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 18 [2022-02-10 02:45:27,722 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135841115] [2022-02-10 02:45:27,722 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:45:27,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-10 02:45:27,722 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:45:27,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-10 02:45:27,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2022-02-10 02:45:27,723 INFO L87 Difference]: Start difference. First operand 5425 states and 9204 transitions. Second operand has 18 states, 18 states have (on average 3.0) internal successors, (54), 18 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:28,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:45:28,194 INFO L93 Difference]: Finished difference Result 6613 states and 10962 transitions. [2022-02-10 02:45:28,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-02-10 02:45:28,194 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.0) internal successors, (54), 18 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-10 02:45:28,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:45:28,202 INFO L225 Difference]: With dead ends: 6613 [2022-02-10 02:45:28,202 INFO L226 Difference]: Without dead ends: 6602 [2022-02-10 02:45:28,203 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 531 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=676, Invalid=1676, Unknown=0, NotChecked=0, Total=2352 [2022-02-10 02:45:28,203 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 109 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:45:28,203 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 227 Invalid, 463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:45:28,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6602 states. [2022-02-10 02:45:28,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6602 to 5318. [2022-02-10 02:45:28,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5318 states, 5317 states have (on average 1.6936242241865713) internal successors, (9005), 5317 states have internal predecessors, (9005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:28,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5318 states to 5318 states and 9005 transitions. [2022-02-10 02:45:28,272 INFO L78 Accepts]: Start accepts. Automaton has 5318 states and 9005 transitions. Word has length 33 [2022-02-10 02:45:28,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:45:28,272 INFO L470 AbstractCegarLoop]: Abstraction has 5318 states and 9005 transitions. [2022-02-10 02:45:28,272 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.0) internal successors, (54), 18 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:28,273 INFO L276 IsEmpty]: Start isEmpty. Operand 5318 states and 9005 transitions. [2022-02-10 02:45:28,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-10 02:45:28,277 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:45:28,277 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:45:28,293 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2022-02-10 02:45:28,477 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:28,478 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:45:28,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:45:28,478 INFO L85 PathProgramCache]: Analyzing trace with hash -2086031410, now seen corresponding path program 47 times [2022-02-10 02:45:28,478 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:45:28,478 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13647897] [2022-02-10 02:45:28,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:45:28,478 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:45:28,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:28,522 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:28,522 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:45:28,522 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13647897] [2022-02-10 02:45:28,522 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13647897] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:45:28,522 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1037916776] [2022-02-10 02:45:28,522 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:45:28,523 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:28,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:45:28,537 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:45:28,538 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2022-02-10 02:45:28,559 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-02-10 02:45:28,559 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:45:28,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-10 02:45:28,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:45:28,690 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 12 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:28,690 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:45:28,742 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:28,743 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1037916776] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:45:28,743 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:45:28,743 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 10] total 17 [2022-02-10 02:45:28,743 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006870690] [2022-02-10 02:45:28,743 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:45:28,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-10 02:45:28,743 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:45:28,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-10 02:45:28,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2022-02-10 02:45:28,744 INFO L87 Difference]: Start difference. First operand 5318 states and 9005 transitions. Second operand has 17 states, 17 states have (on average 3.176470588235294) internal successors, (54), 17 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:29,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:45:29,209 INFO L93 Difference]: Finished difference Result 8181 states and 13614 transitions. [2022-02-10 02:45:29,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-02-10 02:45:29,210 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.176470588235294) internal successors, (54), 17 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-10 02:45:29,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:45:29,223 INFO L225 Difference]: With dead ends: 8181 [2022-02-10 02:45:29,223 INFO L226 Difference]: Without dead ends: 8177 [2022-02-10 02:45:29,224 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 59 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 539 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=680, Invalid=1576, Unknown=0, NotChecked=0, Total=2256 [2022-02-10 02:45:29,224 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 162 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:45:29,225 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [162 Valid, 200 Invalid, 417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 374 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:45:29,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8177 states. [2022-02-10 02:45:29,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8177 to 5386. [2022-02-10 02:45:29,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5386 states, 5385 states have (on average 1.6902506963788302) internal successors, (9102), 5385 states have internal predecessors, (9102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:29,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5386 states to 5386 states and 9102 transitions. [2022-02-10 02:45:29,315 INFO L78 Accepts]: Start accepts. Automaton has 5386 states and 9102 transitions. Word has length 33 [2022-02-10 02:45:29,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:45:29,315 INFO L470 AbstractCegarLoop]: Abstraction has 5386 states and 9102 transitions. [2022-02-10 02:45:29,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.176470588235294) internal successors, (54), 17 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:29,315 INFO L276 IsEmpty]: Start isEmpty. Operand 5386 states and 9102 transitions. [2022-02-10 02:45:29,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-10 02:45:29,319 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:45:29,320 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:45:29,336 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2022-02-10 02:45:29,520 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:29,521 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:45:29,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:45:29,521 INFO L85 PathProgramCache]: Analyzing trace with hash -322851946, now seen corresponding path program 48 times [2022-02-10 02:45:29,521 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:45:29,521 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497352747] [2022-02-10 02:45:29,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:45:29,521 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:45:29,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:29,554 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:29,554 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:45:29,554 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497352747] [2022-02-10 02:45:29,554 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497352747] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:45:29,554 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [981031471] [2022-02-10 02:45:29,554 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:45:29,555 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:29,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:45:29,556 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:45:29,557 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2022-02-10 02:45:29,578 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-02-10 02:45:29,578 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:45:29,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-10 02:45:29,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:45:29,711 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 12 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:29,711 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:45:29,763 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:29,763 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [981031471] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:45:29,763 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:45:29,763 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 9] total 16 [2022-02-10 02:45:29,763 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530265838] [2022-02-10 02:45:29,763 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:45:29,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-10 02:45:29,763 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:45:29,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-10 02:45:29,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2022-02-10 02:45:29,764 INFO L87 Difference]: Start difference. First operand 5386 states and 9102 transitions. Second operand has 16 states, 16 states have (on average 3.375) internal successors, (54), 16 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:30,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:45:30,257 INFO L93 Difference]: Finished difference Result 9698 states and 16257 transitions. [2022-02-10 02:45:30,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-02-10 02:45:30,257 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.375) internal successors, (54), 16 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-10 02:45:30,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:45:30,269 INFO L225 Difference]: With dead ends: 9698 [2022-02-10 02:45:30,269 INFO L226 Difference]: Without dead ends: 9698 [2022-02-10 02:45:30,270 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 777 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=919, Invalid=1837, Unknown=0, NotChecked=0, Total=2756 [2022-02-10 02:45:30,270 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 171 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:45:30,270 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [171 Valid, 226 Invalid, 446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:45:30,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9698 states. [2022-02-10 02:45:30,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9698 to 5864. [2022-02-10 02:45:30,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5864 states, 5863 states have (on average 1.6940133037694014) internal successors, (9932), 5863 states have internal predecessors, (9932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:30,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5864 states to 5864 states and 9932 transitions. [2022-02-10 02:45:30,368 INFO L78 Accepts]: Start accepts. Automaton has 5864 states and 9932 transitions. Word has length 33 [2022-02-10 02:45:30,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:45:30,368 INFO L470 AbstractCegarLoop]: Abstraction has 5864 states and 9932 transitions. [2022-02-10 02:45:30,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.375) internal successors, (54), 16 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:30,368 INFO L276 IsEmpty]: Start isEmpty. Operand 5864 states and 9932 transitions. [2022-02-10 02:45:30,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-10 02:45:30,372 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:45:30,372 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:45:30,389 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2022-02-10 02:45:30,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:30,579 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:45:30,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:45:30,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1717027250, now seen corresponding path program 49 times [2022-02-10 02:45:30,580 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:45:30,580 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749658715] [2022-02-10 02:45:30,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:45:30,580 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:45:30,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:30,634 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 15 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:30,634 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:45:30,634 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749658715] [2022-02-10 02:45:30,634 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749658715] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:45:30,634 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [922031195] [2022-02-10 02:45:30,634 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:45:30,634 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:30,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:45:30,636 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:45:30,636 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2022-02-10 02:45:30,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:30,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-10 02:45:30,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:45:30,789 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 22 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:30,790 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:45:30,842 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 15 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:30,843 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [922031195] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:45:30,843 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:45:30,843 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 18 [2022-02-10 02:45:30,844 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419331842] [2022-02-10 02:45:30,844 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:45:30,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-10 02:45:30,844 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:45:30,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-10 02:45:30,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2022-02-10 02:45:30,844 INFO L87 Difference]: Start difference. First operand 5864 states and 9932 transitions. Second operand has 18 states, 18 states have (on average 2.8333333333333335) internal successors, (51), 18 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:31,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:45:31,268 INFO L93 Difference]: Finished difference Result 9186 states and 15366 transitions. [2022-02-10 02:45:31,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-02-10 02:45:31,269 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.8333333333333335) internal successors, (51), 18 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-10 02:45:31,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:45:31,281 INFO L225 Difference]: With dead ends: 9186 [2022-02-10 02:45:31,281 INFO L226 Difference]: Without dead ends: 9168 [2022-02-10 02:45:31,282 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 630 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=746, Invalid=1804, Unknown=0, NotChecked=0, Total=2550 [2022-02-10 02:45:31,282 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 167 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:45:31,282 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [167 Valid, 166 Invalid, 365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 313 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:45:31,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9168 states. [2022-02-10 02:45:31,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9168 to 5847. [2022-02-10 02:45:31,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5847 states, 5846 states have (on average 1.6893602463222717) internal successors, (9876), 5846 states have internal predecessors, (9876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:31,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5847 states to 5847 states and 9876 transitions. [2022-02-10 02:45:31,372 INFO L78 Accepts]: Start accepts. Automaton has 5847 states and 9876 transitions. Word has length 33 [2022-02-10 02:45:31,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:45:31,372 INFO L470 AbstractCegarLoop]: Abstraction has 5847 states and 9876 transitions. [2022-02-10 02:45:31,372 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.8333333333333335) internal successors, (51), 18 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:31,372 INFO L276 IsEmpty]: Start isEmpty. Operand 5847 states and 9876 transitions. [2022-02-10 02:45:31,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-10 02:45:31,377 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:45:31,377 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:45:31,394 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2022-02-10 02:45:31,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2022-02-10 02:45:31,577 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:45:31,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:45:31,578 INFO L85 PathProgramCache]: Analyzing trace with hash 594256484, now seen corresponding path program 50 times [2022-02-10 02:45:31,578 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:45:31,578 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992268249] [2022-02-10 02:45:31,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:45:31,578 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:45:31,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:31,630 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 9 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:31,630 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:45:31,630 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992268249] [2022-02-10 02:45:31,630 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992268249] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:45:31,631 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [377818803] [2022-02-10 02:45:31,631 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:45:31,631 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:31,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:45:31,632 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:45:31,633 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2022-02-10 02:45:31,653 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:45:31,653 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:45:31,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-10 02:45:31,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:45:31,850 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 12 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:31,850 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:45:31,905 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 9 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:31,905 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [377818803] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:45:31,905 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:45:31,906 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 19 [2022-02-10 02:45:31,906 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039924614] [2022-02-10 02:45:31,906 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:45:31,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-10 02:45:31,906 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:45:31,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-10 02:45:31,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2022-02-10 02:45:31,907 INFO L87 Difference]: Start difference. First operand 5847 states and 9876 transitions. Second operand has 19 states, 19 states have (on average 3.0) internal successors, (57), 19 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:32,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:45:32,428 INFO L93 Difference]: Finished difference Result 8621 states and 14264 transitions. [2022-02-10 02:45:32,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-02-10 02:45:32,428 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.0) internal successors, (57), 19 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-10 02:45:32,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:45:32,439 INFO L225 Difference]: With dead ends: 8621 [2022-02-10 02:45:32,439 INFO L226 Difference]: Without dead ends: 8610 [2022-02-10 02:45:32,440 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 604 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=708, Invalid=1842, Unknown=0, NotChecked=0, Total=2550 [2022-02-10 02:45:32,440 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 107 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:45:32,440 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 267 Invalid, 490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 451 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:45:32,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8610 states. [2022-02-10 02:45:32,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8610 to 6445. [2022-02-10 02:45:32,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6445 states, 6444 states have (on average 1.6869956548727498) internal successors, (10871), 6444 states have internal predecessors, (10871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:32,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6445 states to 6445 states and 10871 transitions. [2022-02-10 02:45:32,532 INFO L78 Accepts]: Start accepts. Automaton has 6445 states and 10871 transitions. Word has length 33 [2022-02-10 02:45:32,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:45:32,532 INFO L470 AbstractCegarLoop]: Abstraction has 6445 states and 10871 transitions. [2022-02-10 02:45:32,532 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.0) internal successors, (57), 19 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:32,532 INFO L276 IsEmpty]: Start isEmpty. Operand 6445 states and 10871 transitions. [2022-02-10 02:45:32,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-10 02:45:32,537 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:45:32,538 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:45:32,555 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2022-02-10 02:45:32,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2022-02-10 02:45:32,739 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:45:32,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:45:32,739 INFO L85 PathProgramCache]: Analyzing trace with hash -502493576, now seen corresponding path program 51 times [2022-02-10 02:45:32,739 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:45:32,739 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368840956] [2022-02-10 02:45:32,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:45:32,739 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:45:32,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:32,779 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 9 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:32,780 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:45:32,780 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368840956] [2022-02-10 02:45:32,780 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368840956] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:45:32,780 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1213937042] [2022-02-10 02:45:32,780 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:45:32,780 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:32,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:45:32,781 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:45:32,781 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2022-02-10 02:45:32,801 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-02-10 02:45:32,801 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:45:32,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-10 02:45:32,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:45:32,943 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 12 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:32,944 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:45:33,000 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 9 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:33,000 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1213937042] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:45:33,000 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:45:33,001 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 10] total 18 [2022-02-10 02:45:33,001 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204723683] [2022-02-10 02:45:33,001 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:45:33,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-10 02:45:33,001 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:45:33,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-10 02:45:33,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2022-02-10 02:45:33,002 INFO L87 Difference]: Start difference. First operand 6445 states and 10871 transitions. Second operand has 18 states, 18 states have (on average 3.1666666666666665) internal successors, (57), 18 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:33,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:45:33,561 INFO L93 Difference]: Finished difference Result 10481 states and 17379 transitions. [2022-02-10 02:45:33,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-02-10 02:45:33,562 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.1666666666666665) internal successors, (57), 18 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-10 02:45:33,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:45:33,578 INFO L225 Difference]: With dead ends: 10481 [2022-02-10 02:45:33,578 INFO L226 Difference]: Without dead ends: 10477 [2022-02-10 02:45:33,579 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 783 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=791, Invalid=1965, Unknown=0, NotChecked=0, Total=2756 [2022-02-10 02:45:33,580 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 176 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:45:33,580 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [176 Valid, 226 Invalid, 427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 375 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:45:33,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10477 states. [2022-02-10 02:45:33,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10477 to 7221. [2022-02-10 02:45:33,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7221 states, 7220 states have (on average 1.6837950138504154) internal successors, (12157), 7220 states have internal predecessors, (12157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:33,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7221 states to 7221 states and 12157 transitions. [2022-02-10 02:45:33,709 INFO L78 Accepts]: Start accepts. Automaton has 7221 states and 12157 transitions. Word has length 33 [2022-02-10 02:45:33,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:45:33,709 INFO L470 AbstractCegarLoop]: Abstraction has 7221 states and 12157 transitions. [2022-02-10 02:45:33,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.1666666666666665) internal successors, (57), 18 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:33,709 INFO L276 IsEmpty]: Start isEmpty. Operand 7221 states and 12157 transitions. [2022-02-10 02:45:33,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-10 02:45:33,715 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:45:33,715 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:45:33,733 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2022-02-10 02:45:33,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2022-02-10 02:45:33,932 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:45:33,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:45:33,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1506622180, now seen corresponding path program 52 times [2022-02-10 02:45:33,932 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:45:33,933 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351378232] [2022-02-10 02:45:33,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:45:33,933 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:45:33,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:33,975 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 9 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:33,975 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:45:33,975 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351378232] [2022-02-10 02:45:33,975 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351378232] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:45:33,975 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1013667301] [2022-02-10 02:45:33,975 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:45:33,975 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:33,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:45:33,992 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:45:33,993 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2022-02-10 02:45:34,018 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:45:34,018 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:45:34,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-10 02:45:34,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:45:34,144 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 12 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:34,144 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:45:34,191 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 9 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:34,191 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1013667301] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:45:34,191 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:45:34,191 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 9] total 17 [2022-02-10 02:45:34,191 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101814750] [2022-02-10 02:45:34,192 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:45:34,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-10 02:45:34,192 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:45:34,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-10 02:45:34,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-02-10 02:45:34,192 INFO L87 Difference]: Start difference. First operand 7221 states and 12157 transitions. Second operand has 17 states, 17 states have (on average 3.3529411764705883) internal successors, (57), 17 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:34,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:45:34,891 INFO L93 Difference]: Finished difference Result 12509 states and 20922 transitions. [2022-02-10 02:45:34,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-02-10 02:45:34,891 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.3529411764705883) internal successors, (57), 17 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-10 02:45:34,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:45:34,911 INFO L225 Difference]: With dead ends: 12509 [2022-02-10 02:45:34,911 INFO L226 Difference]: Without dead ends: 12509 [2022-02-10 02:45:34,912 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 59 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1350 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1203, Invalid=2579, Unknown=0, NotChecked=0, Total=3782 [2022-02-10 02:45:34,912 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 185 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 401 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:45:34,912 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [185 Valid, 241 Invalid, 458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 401 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:45:34,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12509 states. [2022-02-10 02:45:35,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12509 to 9034. [2022-02-10 02:45:35,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9034 states, 9033 states have (on average 1.6853758441270896) internal successors, (15224), 9033 states have internal predecessors, (15224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:35,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9034 states to 9034 states and 15224 transitions. [2022-02-10 02:45:35,085 INFO L78 Accepts]: Start accepts. Automaton has 9034 states and 15224 transitions. Word has length 33 [2022-02-10 02:45:35,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:45:35,086 INFO L470 AbstractCegarLoop]: Abstraction has 9034 states and 15224 transitions. [2022-02-10 02:45:35,086 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.3529411764705883) internal successors, (57), 17 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:35,086 INFO L276 IsEmpty]: Start isEmpty. Operand 9034 states and 15224 transitions. [2022-02-10 02:45:35,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-10 02:45:35,092 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:45:35,092 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:45:35,109 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2022-02-10 02:45:35,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2022-02-10 02:45:35,307 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:45:35,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:45:35,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1726645230, now seen corresponding path program 53 times [2022-02-10 02:45:35,308 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:45:35,308 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655459649] [2022-02-10 02:45:35,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:45:35,308 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:45:35,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:35,356 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 22 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:35,356 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:45:35,356 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655459649] [2022-02-10 02:45:35,357 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655459649] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:45:35,357 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [562681248] [2022-02-10 02:45:35,357 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:45:35,357 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:35,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:45:35,392 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:45:35,393 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2022-02-10 02:45:35,412 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-02-10 02:45:35,412 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:45:35,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-10 02:45:35,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:45:35,539 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 22 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:35,539 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:45:35,587 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 22 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:35,587 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [562681248] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:45:35,587 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:45:35,587 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 19 [2022-02-10 02:45:35,587 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238547486] [2022-02-10 02:45:35,588 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:45:35,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-10 02:45:35,588 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:45:35,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-10 02:45:35,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2022-02-10 02:45:35,588 INFO L87 Difference]: Start difference. First operand 9034 states and 15224 transitions. Second operand has 19 states, 19 states have (on average 2.8421052631578947) internal successors, (54), 19 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:36,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:45:36,021 INFO L93 Difference]: Finished difference Result 13661 states and 22873 transitions. [2022-02-10 02:45:36,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-02-10 02:45:36,022 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.8421052631578947) internal successors, (54), 19 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-10 02:45:36,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:45:36,046 INFO L225 Difference]: With dead ends: 13661 [2022-02-10 02:45:36,046 INFO L226 Difference]: Without dead ends: 13641 [2022-02-10 02:45:36,046 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 715 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=694, Invalid=1856, Unknown=0, NotChecked=0, Total=2550 [2022-02-10 02:45:36,047 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 198 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:45:36,047 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [198 Valid, 147 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:45:36,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13641 states. [2022-02-10 02:45:36,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13641 to 9539. [2022-02-10 02:45:36,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9539 states, 9538 states have (on average 1.6842105263157894) internal successors, (16064), 9538 states have internal predecessors, (16064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:36,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9539 states to 9539 states and 16064 transitions. [2022-02-10 02:45:36,221 INFO L78 Accepts]: Start accepts. Automaton has 9539 states and 16064 transitions. Word has length 33 [2022-02-10 02:45:36,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:45:36,221 INFO L470 AbstractCegarLoop]: Abstraction has 9539 states and 16064 transitions. [2022-02-10 02:45:36,221 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.8421052631578947) internal successors, (54), 19 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:36,222 INFO L276 IsEmpty]: Start isEmpty. Operand 9539 states and 16064 transitions. [2022-02-10 02:45:36,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-02-10 02:45:36,230 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:45:36,231 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:45:36,253 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0 [2022-02-10 02:45:36,431 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2022-02-10 02:45:36,431 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:45:36,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:45:36,431 INFO L85 PathProgramCache]: Analyzing trace with hash 792147171, now seen corresponding path program 54 times [2022-02-10 02:45:36,432 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:45:36,432 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931287070] [2022-02-10 02:45:36,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:45:36,432 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:45:36,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:36,492 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:36,493 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:45:36,493 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931287070] [2022-02-10 02:45:36,493 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931287070] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:45:36,493 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [475139889] [2022-02-10 02:45:36,493 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:45:36,493 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:36,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:45:36,494 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:45:36,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2022-02-10 02:45:36,542 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-02-10 02:45:36,542 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:45:36,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 19 conjunts are in the unsatisfiable core [2022-02-10 02:45:36,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:45:36,663 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:36,663 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:45:36,789 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:36,789 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [475139889] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:45:36,789 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:45:36,789 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2022-02-10 02:45:36,789 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914406287] [2022-02-10 02:45:36,789 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:45:36,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-10 02:45:36,790 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:45:36,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-10 02:45:36,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-02-10 02:45:36,790 INFO L87 Difference]: Start difference. First operand 9539 states and 16064 transitions. Second operand has 7 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:36,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:45:36,876 INFO L93 Difference]: Finished difference Result 11835 states and 19898 transitions. [2022-02-10 02:45:36,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-10 02:45:36,876 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-02-10 02:45:36,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:45:36,897 INFO L225 Difference]: With dead ends: 11835 [2022-02-10 02:45:36,897 INFO L226 Difference]: Without dead ends: 11830 [2022-02-10 02:45:36,897 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 71 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-02-10 02:45:36,898 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 35 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:45:36,898 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 242 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:45:36,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11830 states. [2022-02-10 02:45:37,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11830 to 10755. [2022-02-10 02:45:37,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10755 states, 10754 states have (on average 1.6892319137065277) internal successors, (18166), 10754 states have internal predecessors, (18166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:37,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10755 states to 10755 states and 18166 transitions. [2022-02-10 02:45:37,070 INFO L78 Accepts]: Start accepts. Automaton has 10755 states and 18166 transitions. Word has length 36 [2022-02-10 02:45:37,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:45:37,070 INFO L470 AbstractCegarLoop]: Abstraction has 10755 states and 18166 transitions. [2022-02-10 02:45:37,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:37,071 INFO L276 IsEmpty]: Start isEmpty. Operand 10755 states and 18166 transitions. [2022-02-10 02:45:37,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-02-10 02:45:37,080 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:45:37,080 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:45:37,097 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Ended with exit code 0 [2022-02-10 02:45:37,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2022-02-10 02:45:37,281 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:45:37,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:45:37,281 INFO L85 PathProgramCache]: Analyzing trace with hash -80236445, now seen corresponding path program 55 times [2022-02-10 02:45:37,281 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:45:37,282 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461111199] [2022-02-10 02:45:37,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:45:37,282 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:45:37,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:37,333 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-02-10 02:45:37,333 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:45:37,333 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461111199] [2022-02-10 02:45:37,333 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461111199] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:45:37,333 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1633920397] [2022-02-10 02:45:37,333 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:45:37,333 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:37,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:45:37,334 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:45:37,335 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2022-02-10 02:45:37,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:37,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 19 conjunts are in the unsatisfiable core [2022-02-10 02:45:37,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:45:37,470 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-02-10 02:45:37,470 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:45:37,576 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-02-10 02:45:37,576 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1633920397] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:45:37,576 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:45:37,576 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2022-02-10 02:45:37,577 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000117923] [2022-02-10 02:45:37,577 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:45:37,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-10 02:45:37,577 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:45:37,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-10 02:45:37,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-02-10 02:45:37,577 INFO L87 Difference]: Start difference. First operand 10755 states and 18166 transitions. Second operand has 7 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:37,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:45:37,666 INFO L93 Difference]: Finished difference Result 13016 states and 21939 transitions. [2022-02-10 02:45:37,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-10 02:45:37,667 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-02-10 02:45:37,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:45:37,687 INFO L225 Difference]: With dead ends: 13016 [2022-02-10 02:45:37,687 INFO L226 Difference]: Without dead ends: 13002 [2022-02-10 02:45:37,687 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 71 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-02-10 02:45:37,687 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 35 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 02:45:37,688 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 241 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 02:45:37,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13002 states. [2022-02-10 02:45:37,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13002 to 11326. [2022-02-10 02:45:37,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11326 states, 11325 states have (on average 1.6950110375275937) internal successors, (19196), 11325 states have internal predecessors, (19196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:37,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11326 states to 11326 states and 19196 transitions. [2022-02-10 02:45:37,906 INFO L78 Accepts]: Start accepts. Automaton has 11326 states and 19196 transitions. Word has length 36 [2022-02-10 02:45:37,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:45:37,906 INFO L470 AbstractCegarLoop]: Abstraction has 11326 states and 19196 transitions. [2022-02-10 02:45:37,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:37,906 INFO L276 IsEmpty]: Start isEmpty. Operand 11326 states and 19196 transitions. [2022-02-10 02:45:37,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-02-10 02:45:37,915 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:45:37,915 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:45:37,931 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Ended with exit code 0 [2022-02-10 02:45:38,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:38,123 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:45:38,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:45:38,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1196691321, now seen corresponding path program 56 times [2022-02-10 02:45:38,124 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:45:38,124 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79493123] [2022-02-10 02:45:38,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:45:38,124 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:45:38,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:38,174 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-02-10 02:45:38,174 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:45:38,174 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79493123] [2022-02-10 02:45:38,174 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79493123] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:45:38,174 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2087400382] [2022-02-10 02:45:38,174 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:45:38,174 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:38,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:45:38,175 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:45:38,176 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2022-02-10 02:45:38,196 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:45:38,196 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:45:38,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 19 conjunts are in the unsatisfiable core [2022-02-10 02:45:38,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:45:38,331 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-02-10 02:45:38,332 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:45:38,462 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-02-10 02:45:38,462 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2087400382] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:45:38,462 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:45:38,462 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2022-02-10 02:45:38,462 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252074199] [2022-02-10 02:45:38,462 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:45:38,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-10 02:45:38,463 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:45:38,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-10 02:45:38,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-02-10 02:45:38,463 INFO L87 Difference]: Start difference. First operand 11326 states and 19196 transitions. Second operand has 7 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:38,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:45:38,569 INFO L93 Difference]: Finished difference Result 14100 states and 23815 transitions. [2022-02-10 02:45:38,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-10 02:45:38,570 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-02-10 02:45:38,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:45:38,594 INFO L225 Difference]: With dead ends: 14100 [2022-02-10 02:45:38,594 INFO L226 Difference]: Without dead ends: 14083 [2022-02-10 02:45:38,594 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 71 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-02-10 02:45:38,595 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 34 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:45:38,595 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 236 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:45:38,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14083 states. [2022-02-10 02:45:38,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14083 to 12890. [2022-02-10 02:45:38,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12890 states, 12889 states have (on average 1.697726743734968) internal successors, (21882), 12889 states have internal predecessors, (21882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:38,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12890 states to 12890 states and 21882 transitions. [2022-02-10 02:45:38,876 INFO L78 Accepts]: Start accepts. Automaton has 12890 states and 21882 transitions. Word has length 36 [2022-02-10 02:45:38,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:45:38,876 INFO L470 AbstractCegarLoop]: Abstraction has 12890 states and 21882 transitions. [2022-02-10 02:45:38,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:38,876 INFO L276 IsEmpty]: Start isEmpty. Operand 12890 states and 21882 transitions. [2022-02-10 02:45:38,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-02-10 02:45:38,886 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:45:38,887 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:45:38,903 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Ended with exit code 0 [2022-02-10 02:45:39,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:39,091 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:45:39,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:45:39,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1626427555, now seen corresponding path program 57 times [2022-02-10 02:45:39,092 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:45:39,092 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128022235] [2022-02-10 02:45:39,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:45:39,092 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:45:39,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:39,135 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-02-10 02:45:39,135 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:45:39,136 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128022235] [2022-02-10 02:45:39,136 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128022235] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:45:39,136 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2024492128] [2022-02-10 02:45:39,136 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:45:39,136 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:39,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:45:39,137 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:45:39,137 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2022-02-10 02:45:39,159 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-02-10 02:45:39,160 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:45:39,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 19 conjunts are in the unsatisfiable core [2022-02-10 02:45:39,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:45:39,267 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-02-10 02:45:39,268 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:45:39,373 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-02-10 02:45:39,373 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2024492128] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:45:39,373 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:45:39,373 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2022-02-10 02:45:39,373 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203266454] [2022-02-10 02:45:39,373 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:45:39,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-10 02:45:39,373 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:45:39,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-10 02:45:39,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-02-10 02:45:39,374 INFO L87 Difference]: Start difference. First operand 12890 states and 21882 transitions. Second operand has 7 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:39,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:45:39,457 INFO L93 Difference]: Finished difference Result 14843 states and 25087 transitions. [2022-02-10 02:45:39,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-10 02:45:39,457 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-02-10 02:45:39,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:45:39,476 INFO L225 Difference]: With dead ends: 14843 [2022-02-10 02:45:39,476 INFO L226 Difference]: Without dead ends: 14827 [2022-02-10 02:45:39,476 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 71 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-02-10 02:45:39,476 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 33 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 02:45:39,476 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 232 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 02:45:39,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14827 states. [2022-02-10 02:45:39,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14827 to 14180. [2022-02-10 02:45:39,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14180 states, 14179 states have (on average 1.6977925100500741) internal successors, (24073), 14179 states have internal predecessors, (24073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:39,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14180 states to 14180 states and 24073 transitions. [2022-02-10 02:45:39,700 INFO L78 Accepts]: Start accepts. Automaton has 14180 states and 24073 transitions. Word has length 36 [2022-02-10 02:45:39,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:45:39,700 INFO L470 AbstractCegarLoop]: Abstraction has 14180 states and 24073 transitions. [2022-02-10 02:45:39,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:39,701 INFO L276 IsEmpty]: Start isEmpty. Operand 14180 states and 24073 transitions. [2022-02-10 02:45:39,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-02-10 02:45:39,711 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:45:39,711 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:45:39,728 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2022-02-10 02:45:39,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:39,912 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:45:39,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:45:39,912 INFO L85 PathProgramCache]: Analyzing trace with hash 601065273, now seen corresponding path program 58 times [2022-02-10 02:45:39,912 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:45:39,912 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491507625] [2022-02-10 02:45:39,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:45:39,913 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:45:39,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:39,997 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 02:45:39,997 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:45:39,997 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491507625] [2022-02-10 02:45:39,998 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491507625] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:45:39,998 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [22082236] [2022-02-10 02:45:39,998 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:45:39,998 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:39,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:45:39,999 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:45:40,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2022-02-10 02:45:40,023 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:45:40,024 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:45:40,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 19 conjunts are in the unsatisfiable core [2022-02-10 02:45:40,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:45:40,139 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 02:45:40,139 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:45:40,249 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 02:45:40,249 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [22082236] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:45:40,249 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:45:40,249 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2022-02-10 02:45:40,249 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636326732] [2022-02-10 02:45:40,249 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:45:40,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-10 02:45:40,249 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:45:40,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-10 02:45:40,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-02-10 02:45:40,250 INFO L87 Difference]: Start difference. First operand 14180 states and 24073 transitions. Second operand has 7 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:40,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:45:40,355 INFO L93 Difference]: Finished difference Result 15203 states and 25693 transitions. [2022-02-10 02:45:40,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-10 02:45:40,355 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-02-10 02:45:40,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:45:40,384 INFO L225 Difference]: With dead ends: 15203 [2022-02-10 02:45:40,384 INFO L226 Difference]: Without dead ends: 15188 [2022-02-10 02:45:40,384 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 71 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-02-10 02:45:40,384 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 31 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:45:40,385 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 231 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:45:40,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15188 states. [2022-02-10 02:45:40,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15188 to 15039. [2022-02-10 02:45:40,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15039 states, 15038 states have (on average 1.6963026998271047) internal successors, (25509), 15038 states have internal predecessors, (25509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:40,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15039 states to 15039 states and 25509 transitions. [2022-02-10 02:45:40,632 INFO L78 Accepts]: Start accepts. Automaton has 15039 states and 25509 transitions. Word has length 36 [2022-02-10 02:45:40,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:45:40,632 INFO L470 AbstractCegarLoop]: Abstraction has 15039 states and 25509 transitions. [2022-02-10 02:45:40,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:40,632 INFO L276 IsEmpty]: Start isEmpty. Operand 15039 states and 25509 transitions. [2022-02-10 02:45:40,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-10 02:45:40,648 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:45:40,648 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:45:40,664 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Ended with exit code 0 [2022-02-10 02:45:40,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable62 [2022-02-10 02:45:40,851 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:45:40,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:45:40,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1526243374, now seen corresponding path program 59 times [2022-02-10 02:45:40,852 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:45:40,852 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353408176] [2022-02-10 02:45:40,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:45:40,852 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:45:40,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:40,908 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 22 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:40,908 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:45:40,908 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353408176] [2022-02-10 02:45:40,908 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353408176] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:45:40,908 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [643259633] [2022-02-10 02:45:40,908 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:45:40,908 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:40,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:45:40,910 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:45:40,921 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2022-02-10 02:45:40,943 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-02-10 02:45:40,943 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:45:40,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-10 02:45:40,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:45:41,052 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 22 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:41,053 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:45:41,113 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 22 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:41,114 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [643259633] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:45:41,114 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:45:41,114 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 18 [2022-02-10 02:45:41,114 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307380002] [2022-02-10 02:45:41,114 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:45:41,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-10 02:45:41,114 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:45:41,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-10 02:45:41,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2022-02-10 02:45:41,115 INFO L87 Difference]: Start difference. First operand 15039 states and 25509 transitions. Second operand has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 18 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:41,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:45:41,372 INFO L93 Difference]: Finished difference Result 19220 states and 32476 transitions. [2022-02-10 02:45:41,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-10 02:45:41,373 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 18 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-02-10 02:45:41,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:45:41,397 INFO L225 Difference]: With dead ends: 19220 [2022-02-10 02:45:41,397 INFO L226 Difference]: Without dead ends: 19220 [2022-02-10 02:45:41,397 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 71 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=261, Invalid=609, Unknown=0, NotChecked=0, Total=870 [2022-02-10 02:45:41,398 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 102 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:45:41,398 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 170 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:45:41,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19220 states. [2022-02-10 02:45:41,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19220 to 15328. [2022-02-10 02:45:41,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15328 states, 15327 states have (on average 1.6961571083708489) internal successors, (25997), 15327 states have internal predecessors, (25997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:41,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15328 states to 15328 states and 25997 transitions. [2022-02-10 02:45:41,657 INFO L78 Accepts]: Start accepts. Automaton has 15328 states and 25997 transitions. Word has length 39 [2022-02-10 02:45:41,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:45:41,657 INFO L470 AbstractCegarLoop]: Abstraction has 15328 states and 25997 transitions. [2022-02-10 02:45:41,658 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 18 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:41,658 INFO L276 IsEmpty]: Start isEmpty. Operand 15328 states and 25997 transitions. [2022-02-10 02:45:41,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-10 02:45:41,673 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:45:41,673 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:45:41,689 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2022-02-10 02:45:41,873 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2022-02-10 02:45:41,873 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:45:41,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:45:41,874 INFO L85 PathProgramCache]: Analyzing trace with hash -475124626, now seen corresponding path program 60 times [2022-02-10 02:45:41,874 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:45:41,874 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138232348] [2022-02-10 02:45:41,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:45:41,874 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:45:41,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:41,938 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 35 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:41,938 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:45:41,938 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138232348] [2022-02-10 02:45:41,938 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138232348] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:45:41,938 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [937774709] [2022-02-10 02:45:41,938 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:45:41,938 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:41,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:45:41,939 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:45:41,955 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2022-02-10 02:45:41,965 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-02-10 02:45:41,965 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:45:41,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-10 02:45:41,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:45:42,067 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 35 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:42,067 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:45:42,127 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 35 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:42,127 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [937774709] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:45:42,127 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:45:42,127 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 18 [2022-02-10 02:45:42,127 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426279807] [2022-02-10 02:45:42,127 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:45:42,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-10 02:45:42,128 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:45:42,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-10 02:45:42,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2022-02-10 02:45:42,128 INFO L87 Difference]: Start difference. First operand 15328 states and 25997 transitions. Second operand has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 18 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:42,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:45:42,329 INFO L93 Difference]: Finished difference Result 19097 states and 31705 transitions. [2022-02-10 02:45:42,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-10 02:45:42,330 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 18 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-02-10 02:45:42,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:45:42,363 INFO L225 Difference]: With dead ends: 19097 [2022-02-10 02:45:42,363 INFO L226 Difference]: Without dead ends: 19082 [2022-02-10 02:45:42,363 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 72 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=225, Invalid=645, Unknown=0, NotChecked=0, Total=870 [2022-02-10 02:45:42,364 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 110 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:45:42,364 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 127 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:45:42,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19082 states. [2022-02-10 02:45:42,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19082 to 15328. [2022-02-10 02:45:42,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15328 states, 15327 states have (on average 1.6960918640307954) internal successors, (25996), 15327 states have internal predecessors, (25996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:42,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15328 states to 15328 states and 25996 transitions. [2022-02-10 02:45:42,723 INFO L78 Accepts]: Start accepts. Automaton has 15328 states and 25996 transitions. Word has length 39 [2022-02-10 02:45:42,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:45:42,723 INFO L470 AbstractCegarLoop]: Abstraction has 15328 states and 25996 transitions. [2022-02-10 02:45:42,723 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 18 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:42,723 INFO L276 IsEmpty]: Start isEmpty. Operand 15328 states and 25996 transitions. [2022-02-10 02:45:42,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-10 02:45:42,737 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:45:42,737 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:45:42,762 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Ended with exit code 0 [2022-02-10 02:45:42,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:42,938 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:45:42,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:45:42,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1330018256, now seen corresponding path program 61 times [2022-02-10 02:45:42,938 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:45:42,938 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971674592] [2022-02-10 02:45:42,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:45:42,938 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:45:42,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:43,015 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 18 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:43,015 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:45:43,016 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971674592] [2022-02-10 02:45:43,016 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971674592] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:45:43,016 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1852482054] [2022-02-10 02:45:43,016 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:45:43,016 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:43,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:45:43,017 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:45:43,018 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2022-02-10 02:45:43,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:43,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-10 02:45:43,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:45:43,166 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 22 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:43,167 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:45:43,228 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 18 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:43,228 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1852482054] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:45:43,228 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:45:43,228 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 19 [2022-02-10 02:45:43,228 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779826026] [2022-02-10 02:45:43,228 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:45:43,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-10 02:45:43,229 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:45:43,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-10 02:45:43,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2022-02-10 02:45:43,229 INFO L87 Difference]: Start difference. First operand 15328 states and 25996 transitions. Second operand has 19 states, 19 states have (on average 3.0526315789473686) internal successors, (58), 19 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:43,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:45:43,593 INFO L93 Difference]: Finished difference Result 19406 states and 32523 transitions. [2022-02-10 02:45:43,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-02-10 02:45:43,593 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.0526315789473686) internal successors, (58), 19 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-02-10 02:45:43,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:45:43,634 INFO L225 Difference]: With dead ends: 19406 [2022-02-10 02:45:43,635 INFO L226 Difference]: Without dead ends: 19406 [2022-02-10 02:45:43,635 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=402, Invalid=858, Unknown=0, NotChecked=0, Total=1260 [2022-02-10 02:45:43,636 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 110 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:45:43,637 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 245 Invalid, 435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 409 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:45:43,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19406 states. [2022-02-10 02:45:43,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19406 to 15551. [2022-02-10 02:45:43,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15551 states, 15550 states have (on average 1.6967202572347266) internal successors, (26384), 15550 states have internal predecessors, (26384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:43,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15551 states to 15551 states and 26384 transitions. [2022-02-10 02:45:43,915 INFO L78 Accepts]: Start accepts. Automaton has 15551 states and 26384 transitions. Word has length 39 [2022-02-10 02:45:43,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:45:43,915 INFO L470 AbstractCegarLoop]: Abstraction has 15551 states and 26384 transitions. [2022-02-10 02:45:43,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.0526315789473686) internal successors, (58), 19 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:43,915 INFO L276 IsEmpty]: Start isEmpty. Operand 15551 states and 26384 transitions. [2022-02-10 02:45:43,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-10 02:45:43,928 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:45:43,928 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:45:43,945 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Ended with exit code 0 [2022-02-10 02:45:44,130 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:44,130 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:45:44,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:45:44,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1229166546, now seen corresponding path program 62 times [2022-02-10 02:45:44,131 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:45:44,131 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130612970] [2022-02-10 02:45:44,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:45:44,131 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:45:44,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:44,196 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 31 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:44,196 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:45:44,196 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130612970] [2022-02-10 02:45:44,196 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130612970] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:45:44,196 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2072441340] [2022-02-10 02:45:44,196 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:45:44,196 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:44,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:45:44,197 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:45:44,198 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2022-02-10 02:45:44,218 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:45:44,218 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:45:44,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-10 02:45:44,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:45:44,340 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 31 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:44,340 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:45:44,394 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 31 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:44,394 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2072441340] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:45:44,394 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:45:44,395 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 19 [2022-02-10 02:45:44,395 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004003413] [2022-02-10 02:45:44,395 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:45:44,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-10 02:45:44,395 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:45:44,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-10 02:45:44,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2022-02-10 02:45:44,395 INFO L87 Difference]: Start difference. First operand 15551 states and 26384 transitions. Second operand has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 19 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:44,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:45:44,690 INFO L93 Difference]: Finished difference Result 19360 states and 32132 transitions. [2022-02-10 02:45:44,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-02-10 02:45:44,690 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 19 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-02-10 02:45:44,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:45:44,721 INFO L225 Difference]: With dead ends: 19360 [2022-02-10 02:45:44,721 INFO L226 Difference]: Without dead ends: 19346 [2022-02-10 02:45:44,721 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 293 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=356, Invalid=1050, Unknown=0, NotChecked=0, Total=1406 [2022-02-10 02:45:44,722 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 191 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:45:44,722 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [191 Valid, 138 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:45:44,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19346 states. [2022-02-10 02:45:44,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19346 to 16699. [2022-02-10 02:45:44,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16699 states, 16698 states have (on average 1.6990657563780094) internal successors, (28371), 16698 states have internal predecessors, (28371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:45,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16699 states to 16699 states and 28371 transitions. [2022-02-10 02:45:45,094 INFO L78 Accepts]: Start accepts. Automaton has 16699 states and 28371 transitions. Word has length 39 [2022-02-10 02:45:45,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:45:45,094 INFO L470 AbstractCegarLoop]: Abstraction has 16699 states and 28371 transitions. [2022-02-10 02:45:45,094 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 19 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:45,094 INFO L276 IsEmpty]: Start isEmpty. Operand 16699 states and 28371 transitions. [2022-02-10 02:45:45,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-10 02:45:45,111 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:45:45,111 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:45:45,128 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0 [2022-02-10 02:45:45,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2022-02-10 02:45:45,312 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:45:45,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:45:45,312 INFO L85 PathProgramCache]: Analyzing trace with hash -2079237648, now seen corresponding path program 63 times [2022-02-10 02:45:45,312 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:45:45,312 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410506250] [2022-02-10 02:45:45,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:45:45,312 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:45:45,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:45,458 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 18 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:45,458 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:45:45,458 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410506250] [2022-02-10 02:45:45,459 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410506250] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:45:45,459 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993434307] [2022-02-10 02:45:45,459 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:45:45,459 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:45,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:45:45,460 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:45:45,460 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2022-02-10 02:45:45,484 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-02-10 02:45:45,484 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:45:45,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-10 02:45:45,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:45:45,616 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 22 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:45,617 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:45:45,683 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 18 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:45,683 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [993434307] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:45:45,683 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:45:45,683 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 19 [2022-02-10 02:45:45,683 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802806583] [2022-02-10 02:45:45,683 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:45:45,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-10 02:45:45,683 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:45:45,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-10 02:45:45,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2022-02-10 02:45:45,684 INFO L87 Difference]: Start difference. First operand 16699 states and 28371 transitions. Second operand has 19 states, 19 states have (on average 3.0526315789473686) internal successors, (58), 19 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:46,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:45:46,512 INFO L93 Difference]: Finished difference Result 21755 states and 36517 transitions. [2022-02-10 02:45:46,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-02-10 02:45:46,512 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.0526315789473686) internal successors, (58), 19 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-02-10 02:45:46,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:45:46,558 INFO L225 Difference]: With dead ends: 21755 [2022-02-10 02:45:46,558 INFO L226 Difference]: Without dead ends: 21755 [2022-02-10 02:45:46,559 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 993 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1314, Invalid=2846, Unknown=0, NotChecked=0, Total=4160 [2022-02-10 02:45:46,559 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 129 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 586 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:45:46,559 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [129 Valid, 336 Invalid, 628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 586 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:45:46,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21755 states. [2022-02-10 02:45:46,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21755 to 17047. [2022-02-10 02:45:46,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17047 states, 17046 states have (on average 1.6992842895694005) internal successors, (28966), 17046 states have internal predecessors, (28966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:46,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17047 states to 17047 states and 28966 transitions. [2022-02-10 02:45:46,922 INFO L78 Accepts]: Start accepts. Automaton has 17047 states and 28966 transitions. Word has length 39 [2022-02-10 02:45:46,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:45:46,922 INFO L470 AbstractCegarLoop]: Abstraction has 17047 states and 28966 transitions. [2022-02-10 02:45:46,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.0526315789473686) internal successors, (58), 19 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:46,923 INFO L276 IsEmpty]: Start isEmpty. Operand 17047 states and 28966 transitions. [2022-02-10 02:45:46,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-10 02:45:46,947 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:45:46,947 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:45:46,970 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0 [2022-02-10 02:45:47,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2022-02-10 02:45:47,148 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:45:47,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:45:47,148 INFO L85 PathProgramCache]: Analyzing trace with hash -303781198, now seen corresponding path program 64 times [2022-02-10 02:45:47,148 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:45:47,148 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341467146] [2022-02-10 02:45:47,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:45:47,148 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:45:47,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:47,236 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 23 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:47,237 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:45:47,237 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341467146] [2022-02-10 02:45:47,237 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341467146] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:45:47,237 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1155129844] [2022-02-10 02:45:47,237 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:45:47,237 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:47,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:45:47,239 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:45:47,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2022-02-10 02:45:47,264 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:45:47,264 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:45:47,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-10 02:45:47,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:45:47,436 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 23 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:47,436 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:45:47,495 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 23 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:47,495 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1155129844] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:45:47,495 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:45:47,495 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 19 [2022-02-10 02:45:47,495 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755673059] [2022-02-10 02:45:47,495 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:45:47,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-10 02:45:47,496 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:45:47,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-10 02:45:47,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2022-02-10 02:45:47,496 INFO L87 Difference]: Start difference. First operand 17047 states and 28966 transitions. Second operand has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 19 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:48,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:45:48,010 INFO L93 Difference]: Finished difference Result 26451 states and 43957 transitions. [2022-02-10 02:45:48,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-02-10 02:45:48,011 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 19 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-02-10 02:45:48,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:45:48,074 INFO L225 Difference]: With dead ends: 26451 [2022-02-10 02:45:48,074 INFO L226 Difference]: Without dead ends: 26430 [2022-02-10 02:45:48,075 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 464 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=463, Invalid=1429, Unknown=0, NotChecked=0, Total=1892 [2022-02-10 02:45:48,075 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 234 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:45:48,075 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [234 Valid, 186 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 303 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:45:48,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26430 states. [2022-02-10 02:45:48,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26430 to 20235. [2022-02-10 02:45:48,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20235 states, 20234 states have (on average 1.7137985568844518) internal successors, (34677), 20234 states have internal predecessors, (34677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:48,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20235 states to 20235 states and 34677 transitions. [2022-02-10 02:45:48,591 INFO L78 Accepts]: Start accepts. Automaton has 20235 states and 34677 transitions. Word has length 39 [2022-02-10 02:45:48,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:45:48,591 INFO L470 AbstractCegarLoop]: Abstraction has 20235 states and 34677 transitions. [2022-02-10 02:45:48,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 19 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:48,591 INFO L276 IsEmpty]: Start isEmpty. Operand 20235 states and 34677 transitions. [2022-02-10 02:45:48,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-10 02:45:48,612 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:45:48,612 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:45:48,634 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Ended with exit code 0 [2022-02-10 02:45:48,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68,65 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:48,813 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:45:48,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:45:48,813 INFO L85 PathProgramCache]: Analyzing trace with hash -144646096, now seen corresponding path program 65 times [2022-02-10 02:45:48,813 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:45:48,813 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143564085] [2022-02-10 02:45:48,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:45:48,813 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:45:48,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:48,919 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 18 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:48,919 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:45:48,919 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143564085] [2022-02-10 02:45:48,919 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143564085] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:45:48,919 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1211094762] [2022-02-10 02:45:48,919 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:45:48,919 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:48,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:45:48,921 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:45:48,921 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2022-02-10 02:45:48,942 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-02-10 02:45:48,942 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:45:48,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-10 02:45:48,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:45:49,064 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 22 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:49,064 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:45:49,122 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 18 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:49,122 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1211094762] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:45:49,122 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:45:49,122 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 19 [2022-02-10 02:45:49,122 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631103318] [2022-02-10 02:45:49,122 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:45:49,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-10 02:45:49,122 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:45:49,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-10 02:45:49,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2022-02-10 02:45:49,123 INFO L87 Difference]: Start difference. First operand 20235 states and 34677 transitions. Second operand has 19 states, 19 states have (on average 3.0526315789473686) internal successors, (58), 19 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:50,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:45:50,060 INFO L93 Difference]: Finished difference Result 25960 states and 43787 transitions. [2022-02-10 02:45:50,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-02-10 02:45:50,061 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.0526315789473686) internal successors, (58), 19 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-02-10 02:45:50,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:45:50,104 INFO L225 Difference]: With dead ends: 25960 [2022-02-10 02:45:50,105 INFO L226 Difference]: Without dead ends: 25960 [2022-02-10 02:45:50,106 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1510 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1780, Invalid=4072, Unknown=0, NotChecked=0, Total=5852 [2022-02-10 02:45:50,106 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 146 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 610 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:45:50,106 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [146 Valid, 351 Invalid, 656 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 610 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:45:50,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25960 states. [2022-02-10 02:45:50,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25960 to 20709. [2022-02-10 02:45:50,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20709 states, 20708 states have (on average 1.7140235657716825) internal successors, (35494), 20708 states have internal predecessors, (35494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:50,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20709 states to 20709 states and 35494 transitions. [2022-02-10 02:45:50,586 INFO L78 Accepts]: Start accepts. Automaton has 20709 states and 35494 transitions. Word has length 39 [2022-02-10 02:45:50,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:45:50,586 INFO L470 AbstractCegarLoop]: Abstraction has 20709 states and 35494 transitions. [2022-02-10 02:45:50,587 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.0526315789473686) internal successors, (58), 19 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:50,587 INFO L276 IsEmpty]: Start isEmpty. Operand 20709 states and 35494 transitions. [2022-02-10 02:45:50,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-10 02:45:50,610 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:45:50,610 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:45:50,626 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Ended with exit code 0 [2022-02-10 02:45:50,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2022-02-10 02:45:50,812 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:45:50,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:45:50,812 INFO L85 PathProgramCache]: Analyzing trace with hash -250407250, now seen corresponding path program 66 times [2022-02-10 02:45:50,812 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:45:50,812 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294268316] [2022-02-10 02:45:50,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:45:50,812 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:45:50,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:50,867 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 21 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:50,867 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:45:50,867 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294268316] [2022-02-10 02:45:50,867 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294268316] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:45:50,867 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [184173085] [2022-02-10 02:45:50,868 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:45:50,868 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:50,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:45:50,869 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:45:50,869 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2022-02-10 02:45:50,890 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-02-10 02:45:50,890 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:45:50,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-10 02:45:50,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:45:51,010 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 21 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:51,010 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:45:51,068 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 21 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:51,068 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [184173085] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:45:51,068 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:45:51,068 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 19 [2022-02-10 02:45:51,068 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754716568] [2022-02-10 02:45:51,068 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:45:51,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-10 02:45:51,068 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:45:51,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-10 02:45:51,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2022-02-10 02:45:51,069 INFO L87 Difference]: Start difference. First operand 20709 states and 35494 transitions. Second operand has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 19 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:51,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:45:51,511 INFO L93 Difference]: Finished difference Result 29439 states and 49360 transitions. [2022-02-10 02:45:51,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-02-10 02:45:51,511 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 19 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-02-10 02:45:51,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:45:51,568 INFO L225 Difference]: With dead ends: 29439 [2022-02-10 02:45:51,569 INFO L226 Difference]: Without dead ends: 29417 [2022-02-10 02:45:51,569 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 488 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=500, Invalid=1480, Unknown=0, NotChecked=0, Total=1980 [2022-02-10 02:45:51,569 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 259 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:45:51,569 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [259 Valid, 167 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:45:51,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29417 states. [2022-02-10 02:45:52,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29417 to 22588. [2022-02-10 02:45:52,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22588 states, 22587 states have (on average 1.7091689910125294) internal successors, (38605), 22587 states have internal predecessors, (38605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:52,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22588 states to 22588 states and 38605 transitions. [2022-02-10 02:45:52,142 INFO L78 Accepts]: Start accepts. Automaton has 22588 states and 38605 transitions. Word has length 39 [2022-02-10 02:45:52,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:45:52,142 INFO L470 AbstractCegarLoop]: Abstraction has 22588 states and 38605 transitions. [2022-02-10 02:45:52,142 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 19 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:52,142 INFO L276 IsEmpty]: Start isEmpty. Operand 22588 states and 38605 transitions. [2022-02-10 02:45:52,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-10 02:45:52,164 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:45:52,164 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:45:52,244 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Forceful destruction successful, exit code 0 [2022-02-10 02:45:52,365 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,67 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:52,365 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:45:52,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:45:52,365 INFO L85 PathProgramCache]: Analyzing trace with hash -697761296, now seen corresponding path program 67 times [2022-02-10 02:45:52,365 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:45:52,365 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116110285] [2022-02-10 02:45:52,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:45:52,366 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:45:52,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:52,429 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 18 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:52,430 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:45:52,430 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116110285] [2022-02-10 02:45:52,430 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116110285] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:45:52,430 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638254997] [2022-02-10 02:45:52,430 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:45:52,430 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:52,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:45:52,452 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:45:52,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2022-02-10 02:45:52,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:52,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-10 02:45:52,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:45:52,624 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 22 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:52,625 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:45:52,682 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 18 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:52,682 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [638254997] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:45:52,682 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:45:52,682 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 19 [2022-02-10 02:45:52,682 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557751826] [2022-02-10 02:45:52,682 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:45:52,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-10 02:45:52,682 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:45:52,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-10 02:45:52,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2022-02-10 02:45:52,683 INFO L87 Difference]: Start difference. First operand 22588 states and 38605 transitions. Second operand has 19 states, 19 states have (on average 3.0526315789473686) internal successors, (58), 19 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:53,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:45:53,770 INFO L93 Difference]: Finished difference Result 29149 states and 49259 transitions. [2022-02-10 02:45:53,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-02-10 02:45:53,771 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.0526315789473686) internal successors, (58), 19 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-02-10 02:45:53,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:45:53,834 INFO L225 Difference]: With dead ends: 29149 [2022-02-10 02:45:53,834 INFO L226 Difference]: Without dead ends: 29149 [2022-02-10 02:45:53,837 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1734 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=2019, Invalid=4461, Unknown=0, NotChecked=0, Total=6480 [2022-02-10 02:45:53,838 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 182 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 719 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:45:53,838 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [182 Valid, 406 Invalid, 776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 719 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:45:53,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29149 states. [2022-02-10 02:45:54,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29149 to 22948. [2022-02-10 02:45:54,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22948 states, 22947 states have (on average 1.7108990281954068) internal successors, (39260), 22947 states have internal predecessors, (39260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:54,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22948 states to 22948 states and 39260 transitions. [2022-02-10 02:45:54,427 INFO L78 Accepts]: Start accepts. Automaton has 22948 states and 39260 transitions. Word has length 39 [2022-02-10 02:45:54,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:45:54,427 INFO L470 AbstractCegarLoop]: Abstraction has 22948 states and 39260 transitions. [2022-02-10 02:45:54,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.0526315789473686) internal successors, (58), 19 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:54,428 INFO L276 IsEmpty]: Start isEmpty. Operand 22948 states and 39260 transitions. [2022-02-10 02:45:54,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-10 02:45:54,449 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:45:54,449 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:45:54,466 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Ended with exit code 0 [2022-02-10 02:45:54,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,68 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:54,649 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:45:54,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:45:54,650 INFO L85 PathProgramCache]: Analyzing trace with hash -1305441230, now seen corresponding path program 68 times [2022-02-10 02:45:54,650 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:45:54,650 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671614682] [2022-02-10 02:45:54,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:45:54,650 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:45:54,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:54,715 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 25 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:54,715 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:45:54,715 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671614682] [2022-02-10 02:45:54,715 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671614682] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:45:54,715 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [400572895] [2022-02-10 02:45:54,715 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:45:54,715 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:54,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:45:54,716 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:45:54,719 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2022-02-10 02:45:54,739 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:45:54,739 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:45:54,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-10 02:45:54,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:45:54,880 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 25 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:54,880 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:45:54,934 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 25 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:54,934 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [400572895] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:45:54,934 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:45:54,934 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 19 [2022-02-10 02:45:54,934 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378940798] [2022-02-10 02:45:54,934 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:45:54,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-10 02:45:54,935 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:45:54,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-10 02:45:54,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2022-02-10 02:45:54,935 INFO L87 Difference]: Start difference. First operand 22948 states and 39260 transitions. Second operand has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 19 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:55,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:45:55,456 INFO L93 Difference]: Finished difference Result 28838 states and 48373 transitions. [2022-02-10 02:45:55,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-02-10 02:45:55,456 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 19 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-02-10 02:45:55,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:45:55,522 INFO L225 Difference]: With dead ends: 28838 [2022-02-10 02:45:55,522 INFO L226 Difference]: Without dead ends: 28825 [2022-02-10 02:45:55,523 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 529 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=581, Invalid=1581, Unknown=0, NotChecked=0, Total=2162 [2022-02-10 02:45:55,523 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 291 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:45:55,523 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [291 Valid, 187 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:45:55,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28825 states. [2022-02-10 02:45:55,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28825 to 23919. [2022-02-10 02:45:56,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23919 states, 23918 states have (on average 1.7052011037712183) internal successors, (40785), 23918 states have internal predecessors, (40785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:56,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23919 states to 23919 states and 40785 transitions. [2022-02-10 02:45:56,071 INFO L78 Accepts]: Start accepts. Automaton has 23919 states and 40785 transitions. Word has length 39 [2022-02-10 02:45:56,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:45:56,071 INFO L470 AbstractCegarLoop]: Abstraction has 23919 states and 40785 transitions. [2022-02-10 02:45:56,071 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 19 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:56,071 INFO L276 IsEmpty]: Start isEmpty. Operand 23919 states and 40785 transitions. [2022-02-10 02:45:56,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-10 02:45:56,093 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:45:56,093 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:45:56,117 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Ended with exit code 0 [2022-02-10 02:45:56,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable72 [2022-02-10 02:45:56,294 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:45:56,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:45:56,294 INFO L85 PathProgramCache]: Analyzing trace with hash -1548835538, now seen corresponding path program 69 times [2022-02-10 02:45:56,294 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:45:56,294 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538710467] [2022-02-10 02:45:56,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:45:56,294 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:45:56,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:56,355 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 35 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:56,356 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:45:56,356 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538710467] [2022-02-10 02:45:56,356 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538710467] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:45:56,356 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201895196] [2022-02-10 02:45:56,356 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:45:56,356 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:56,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:45:56,357 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:45:56,358 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2022-02-10 02:45:56,383 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-02-10 02:45:56,383 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:45:56,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-10 02:45:56,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:45:56,525 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 35 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:56,526 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:45:56,603 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 35 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:56,603 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1201895196] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:45:56,603 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:45:56,603 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 19 [2022-02-10 02:45:56,603 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253562838] [2022-02-10 02:45:56,603 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:45:56,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-10 02:45:56,604 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:45:56,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-10 02:45:56,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2022-02-10 02:45:56,604 INFO L87 Difference]: Start difference. First operand 23919 states and 40785 transitions. Second operand has 19 states, 19 states have (on average 2.8421052631578947) internal successors, (54), 19 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:57,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:45:57,565 INFO L93 Difference]: Finished difference Result 28763 states and 47789 transitions. [2022-02-10 02:45:57,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-02-10 02:45:57,565 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.8421052631578947) internal successors, (54), 19 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-02-10 02:45:57,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:45:57,619 INFO L225 Difference]: With dead ends: 28763 [2022-02-10 02:45:57,619 INFO L226 Difference]: Without dead ends: 28755 [2022-02-10 02:45:57,620 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1817 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1550, Invalid=4000, Unknown=0, NotChecked=0, Total=5550 [2022-02-10 02:45:57,621 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 285 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 455 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:45:57,621 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [285 Valid, 256 Invalid, 546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 455 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:45:57,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28755 states. [2022-02-10 02:45:58,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28755 to 22089. [2022-02-10 02:45:58,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22089 states, 22088 states have (on average 1.6934534588917058) internal successors, (37405), 22088 states have internal predecessors, (37405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:58,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22089 states to 22089 states and 37405 transitions. [2022-02-10 02:45:58,206 INFO L78 Accepts]: Start accepts. Automaton has 22089 states and 37405 transitions. Word has length 39 [2022-02-10 02:45:58,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:45:58,206 INFO L470 AbstractCegarLoop]: Abstraction has 22089 states and 37405 transitions. [2022-02-10 02:45:58,206 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.8421052631578947) internal successors, (54), 19 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:58,206 INFO L276 IsEmpty]: Start isEmpty. Operand 22089 states and 37405 transitions. [2022-02-10 02:45:58,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-10 02:45:58,226 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:45:58,226 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:45:58,245 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Forceful destruction successful, exit code 0 [2022-02-10 02:45:58,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,70 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:58,427 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:45:58,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:45:58,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1197108786, now seen corresponding path program 70 times [2022-02-10 02:45:58,428 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:45:58,428 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361254880] [2022-02-10 02:45:58,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:45:58,428 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:45:58,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:58,494 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 31 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:58,494 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:45:58,494 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361254880] [2022-02-10 02:45:58,494 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361254880] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:45:58,494 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402261414] [2022-02-10 02:45:58,494 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:45:58,494 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:58,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:45:58,496 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:45:58,497 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2022-02-10 02:45:58,522 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:45:58,522 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:45:58,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-10 02:45:58,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:45:58,650 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 35 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:58,651 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:45:58,718 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 31 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:58,719 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [402261414] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:45:58,719 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:45:58,719 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 19 [2022-02-10 02:45:58,719 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745893644] [2022-02-10 02:45:58,719 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:45:58,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-10 02:45:58,719 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:45:58,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-10 02:45:58,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=231, Unknown=0, NotChecked=0, Total=342 [2022-02-10 02:45:58,720 INFO L87 Difference]: Start difference. First operand 22089 states and 37405 transitions. Second operand has 19 states, 19 states have (on average 2.8421052631578947) internal successors, (54), 19 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:59,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:45:59,456 INFO L93 Difference]: Finished difference Result 25443 states and 42813 transitions. [2022-02-10 02:45:59,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-02-10 02:45:59,457 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.8421052631578947) internal successors, (54), 19 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-02-10 02:45:59,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:45:59,496 INFO L225 Difference]: With dead ends: 25443 [2022-02-10 02:45:59,496 INFO L226 Difference]: Without dead ends: 25441 [2022-02-10 02:45:59,497 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1018 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1484, Invalid=2806, Unknown=0, NotChecked=0, Total=4290 [2022-02-10 02:45:59,497 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 192 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 548 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 548 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:45:59,497 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [192 Valid, 297 Invalid, 584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 548 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:45:59,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25441 states. [2022-02-10 02:45:59,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25441 to 21603. [2022-02-10 02:45:59,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21603 states, 21602 states have (on average 1.6920192574761597) internal successors, (36551), 21602 states have internal predecessors, (36551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:59,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21603 states to 21603 states and 36551 transitions. [2022-02-10 02:45:59,964 INFO L78 Accepts]: Start accepts. Automaton has 21603 states and 36551 transitions. Word has length 39 [2022-02-10 02:45:59,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:45:59,964 INFO L470 AbstractCegarLoop]: Abstraction has 21603 states and 36551 transitions. [2022-02-10 02:45:59,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.8421052631578947) internal successors, (54), 19 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:59,964 INFO L276 IsEmpty]: Start isEmpty. Operand 21603 states and 36551 transitions. [2022-02-10 02:45:59,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-10 02:45:59,983 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:45:59,984 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:46:00,000 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Forceful destruction successful, exit code 0 [2022-02-10 02:46:00,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,71 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:46:00,186 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:46:00,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:46:00,187 INFO L85 PathProgramCache]: Analyzing trace with hash 102721788, now seen corresponding path program 71 times [2022-02-10 02:46:00,187 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:46:00,187 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286350660] [2022-02-10 02:46:00,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:46:00,187 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:46:00,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:46:00,241 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 12 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:46:00,241 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:46:00,241 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286350660] [2022-02-10 02:46:00,241 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286350660] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:46:00,241 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1013385919] [2022-02-10 02:46:00,241 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:46:00,241 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:46:00,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:46:00,242 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:46:00,243 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2022-02-10 02:46:00,263 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-02-10 02:46:00,263 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:46:00,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-10 02:46:00,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:46:00,401 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 22 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:46:00,401 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:46:00,459 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 12 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:46:00,459 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1013385919] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:46:00,459 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:46:00,459 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 20 [2022-02-10 02:46:00,460 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187637940] [2022-02-10 02:46:00,460 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:46:00,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 02:46:00,460 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:46:00,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 02:46:00,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380 [2022-02-10 02:46:00,461 INFO L87 Difference]: Start difference. First operand 21603 states and 36551 transitions. Second operand has 20 states, 20 states have (on average 3.0) internal successors, (60), 20 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:01,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:46:01,211 INFO L93 Difference]: Finished difference Result 26481 states and 44486 transitions. [2022-02-10 02:46:01,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-02-10 02:46:01,211 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.0) internal successors, (60), 20 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-02-10 02:46:01,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:46:01,272 INFO L225 Difference]: With dead ends: 26481 [2022-02-10 02:46:01,272 INFO L226 Difference]: Without dead ends: 26455 [2022-02-10 02:46:01,273 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 768 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=1019, Invalid=2287, Unknown=0, NotChecked=0, Total=3306 [2022-02-10 02:46:01,273 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 121 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 699 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 699 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:46:01,274 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [121 Valid, 370 Invalid, 732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 699 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:46:01,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26455 states. [2022-02-10 02:46:01,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26455 to 21605. [2022-02-10 02:46:01,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21605 states, 21604 states have (on average 1.691399740788743) internal successors, (36541), 21604 states have internal predecessors, (36541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:01,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21605 states to 21605 states and 36541 transitions. [2022-02-10 02:46:01,671 INFO L78 Accepts]: Start accepts. Automaton has 21605 states and 36541 transitions. Word has length 39 [2022-02-10 02:46:01,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:46:01,671 INFO L470 AbstractCegarLoop]: Abstraction has 21605 states and 36541 transitions. [2022-02-10 02:46:01,671 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.0) internal successors, (60), 20 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:01,671 INFO L276 IsEmpty]: Start isEmpty. Operand 21605 states and 36541 transitions. [2022-02-10 02:46:01,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-10 02:46:01,694 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:46:01,694 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:46:01,715 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Ended with exit code 0 [2022-02-10 02:46:01,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,72 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:46:01,894 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:46:01,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:46:01,895 INFO L85 PathProgramCache]: Analyzing trace with hash 826905064, now seen corresponding path program 72 times [2022-02-10 02:46:01,895 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:46:01,895 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041525780] [2022-02-10 02:46:01,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:46:01,895 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:46:01,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:46:01,951 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 12 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:46:01,951 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:46:01,952 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041525780] [2022-02-10 02:46:01,952 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041525780] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:46:01,952 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1213366806] [2022-02-10 02:46:01,952 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:46:01,952 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:46:01,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:46:01,953 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:46:01,954 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2022-02-10 02:46:01,978 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-02-10 02:46:01,978 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:46:01,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-10 02:46:01,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:46:02,132 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 22 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:46:02,132 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:46:02,208 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 12 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:46:02,208 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1213366806] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:46:02,208 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:46:02,208 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 12] total 19 [2022-02-10 02:46:02,208 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088797444] [2022-02-10 02:46:02,208 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:46:02,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-10 02:46:02,209 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:46:02,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-10 02:46:02,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2022-02-10 02:46:02,209 INFO L87 Difference]: Start difference. First operand 21605 states and 36541 transitions. Second operand has 19 states, 19 states have (on average 3.1578947368421053) internal successors, (60), 19 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:02,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:46:02,963 INFO L93 Difference]: Finished difference Result 27068 states and 45394 transitions. [2022-02-10 02:46:02,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-02-10 02:46:02,963 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.1578947368421053) internal successors, (60), 19 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-02-10 02:46:02,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:46:03,010 INFO L225 Difference]: With dead ends: 27068 [2022-02-10 02:46:03,010 INFO L226 Difference]: Without dead ends: 27053 [2022-02-10 02:46:03,011 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 819 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1035, Invalid=2387, Unknown=0, NotChecked=0, Total=3422 [2022-02-10 02:46:03,011 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 171 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:46:03,011 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [171 Valid, 243 Invalid, 500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 449 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:46:03,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27053 states. [2022-02-10 02:46:03,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27053 to 21732. [2022-02-10 02:46:03,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21732 states, 21731 states have (on average 1.6923289310202017) internal successors, (36776), 21731 states have internal predecessors, (36776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:03,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21732 states to 21732 states and 36776 transitions. [2022-02-10 02:46:03,531 INFO L78 Accepts]: Start accepts. Automaton has 21732 states and 36776 transitions. Word has length 39 [2022-02-10 02:46:03,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:46:03,531 INFO L470 AbstractCegarLoop]: Abstraction has 21732 states and 36776 transitions. [2022-02-10 02:46:03,531 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.1578947368421053) internal successors, (60), 19 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:03,531 INFO L276 IsEmpty]: Start isEmpty. Operand 21732 states and 36776 transitions. [2022-02-10 02:46:03,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-10 02:46:03,551 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:46:03,551 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:46:03,567 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Ended with exit code 0 [2022-02-10 02:46:03,752 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable76 [2022-02-10 02:46:03,752 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:46:03,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:46:03,753 INFO L85 PathProgramCache]: Analyzing trace with hash 10350716, now seen corresponding path program 73 times [2022-02-10 02:46:03,753 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:46:03,753 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648024598] [2022-02-10 02:46:03,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:46:03,753 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:46:03,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:46:03,810 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 12 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:46:03,810 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:46:03,810 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648024598] [2022-02-10 02:46:03,810 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648024598] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:46:03,811 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2012190693] [2022-02-10 02:46:03,811 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:46:03,811 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:46:03,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:46:03,812 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:46:03,813 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2022-02-10 02:46:03,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:46:03,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-10 02:46:03,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:46:03,995 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 22 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:46:03,995 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:46:04,070 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 12 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:46:04,070 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2012190693] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:46:04,070 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:46:04,070 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 12] total 19 [2022-02-10 02:46:04,071 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926175741] [2022-02-10 02:46:04,071 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:46:04,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-10 02:46:04,071 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:46:04,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-10 02:46:04,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2022-02-10 02:46:04,071 INFO L87 Difference]: Start difference. First operand 21732 states and 36776 transitions. Second operand has 19 states, 19 states have (on average 3.1578947368421053) internal successors, (60), 19 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:05,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:46:05,049 INFO L93 Difference]: Finished difference Result 28563 states and 47886 transitions. [2022-02-10 02:46:05,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-02-10 02:46:05,051 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.1578947368421053) internal successors, (60), 19 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-02-10 02:46:05,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:46:05,117 INFO L225 Difference]: With dead ends: 28563 [2022-02-10 02:46:05,117 INFO L226 Difference]: Without dead ends: 28552 [2022-02-10 02:46:05,118 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1443 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1680, Invalid=3870, Unknown=0, NotChecked=0, Total=5550 [2022-02-10 02:46:05,119 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 154 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 610 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:46:05,119 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [154 Valid, 320 Invalid, 658 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 610 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:46:05,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28552 states. [2022-02-10 02:46:05,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28552 to 22286. [2022-02-10 02:46:05,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22286 states, 22285 states have (on average 1.6928875925510434) internal successors, (37726), 22285 states have internal predecessors, (37726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:05,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22286 states to 22286 states and 37726 transitions. [2022-02-10 02:46:05,745 INFO L78 Accepts]: Start accepts. Automaton has 22286 states and 37726 transitions. Word has length 39 [2022-02-10 02:46:05,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:46:05,745 INFO L470 AbstractCegarLoop]: Abstraction has 22286 states and 37726 transitions. [2022-02-10 02:46:05,745 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.1578947368421053) internal successors, (60), 19 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:05,745 INFO L276 IsEmpty]: Start isEmpty. Operand 22286 states and 37726 transitions. [2022-02-10 02:46:05,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-10 02:46:05,772 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:46:05,772 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:46:05,789 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Ended with exit code 0 [2022-02-10 02:46:05,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77,74 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:46:05,973 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:46:05,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:46:05,973 INFO L85 PathProgramCache]: Analyzing trace with hash -1121699224, now seen corresponding path program 74 times [2022-02-10 02:46:05,974 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:46:05,974 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368839842] [2022-02-10 02:46:05,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:46:05,974 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:46:05,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:46:06,039 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 12 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:46:06,040 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:46:06,040 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368839842] [2022-02-10 02:46:06,040 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368839842] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:46:06,040 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1266905551] [2022-02-10 02:46:06,040 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:46:06,040 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:46:06,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:46:06,052 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:46:06,053 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2022-02-10 02:46:06,073 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:46:06,073 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:46:06,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-10 02:46:06,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:46:06,225 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 22 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:46:06,225 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:46:06,296 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 12 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:46:06,297 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1266905551] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:46:06,297 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:46:06,297 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 12] total 19 [2022-02-10 02:46:06,297 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340827728] [2022-02-10 02:46:06,297 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:46:06,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-10 02:46:06,297 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:46:06,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-10 02:46:06,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2022-02-10 02:46:06,298 INFO L87 Difference]: Start difference. First operand 22286 states and 37726 transitions. Second operand has 19 states, 19 states have (on average 3.1578947368421053) internal successors, (60), 19 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:07,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:46:07,310 INFO L93 Difference]: Finished difference Result 31028 states and 52142 transitions. [2022-02-10 02:46:07,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-02-10 02:46:07,310 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.1578947368421053) internal successors, (60), 19 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-02-10 02:46:07,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:46:07,374 INFO L225 Difference]: With dead ends: 31028 [2022-02-10 02:46:07,374 INFO L226 Difference]: Without dead ends: 31028 [2022-02-10 02:46:07,375 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1734 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1961, Invalid=4201, Unknown=0, NotChecked=0, Total=6162 [2022-02-10 02:46:07,376 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 197 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 661 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:46:07,376 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [197 Valid, 339 Invalid, 720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 661 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:46:07,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31028 states. [2022-02-10 02:46:07,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31028 to 22372. [2022-02-10 02:46:07,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22372 states, 22371 states have (on average 1.6944705198694738) internal successors, (37907), 22371 states have internal predecessors, (37907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:07,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22372 states to 22372 states and 37907 transitions. [2022-02-10 02:46:07,882 INFO L78 Accepts]: Start accepts. Automaton has 22372 states and 37907 transitions. Word has length 39 [2022-02-10 02:46:07,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:46:07,882 INFO L470 AbstractCegarLoop]: Abstraction has 22372 states and 37907 transitions. [2022-02-10 02:46:07,882 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.1578947368421053) internal successors, (60), 19 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:07,882 INFO L276 IsEmpty]: Start isEmpty. Operand 22372 states and 37907 transitions. [2022-02-10 02:46:07,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-10 02:46:07,904 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:46:07,904 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:46:07,920 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Ended with exit code 0 [2022-02-10 02:46:08,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78,75 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:46:08,105 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:46:08,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:46:08,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1654100306, now seen corresponding path program 75 times [2022-02-10 02:46:08,105 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:46:08,105 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813799351] [2022-02-10 02:46:08,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:46:08,106 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:46:08,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:46:08,161 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 23 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:46:08,162 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:46:08,162 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813799351] [2022-02-10 02:46:08,162 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813799351] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:46:08,162 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1413991424] [2022-02-10 02:46:08,162 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:46:08,162 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:46:08,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:46:08,163 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:46:08,164 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2022-02-10 02:46:08,184 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2022-02-10 02:46:08,185 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:46:08,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-10 02:46:08,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:46:08,320 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 35 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:46:08,320 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:46:08,377 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 23 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:46:08,377 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1413991424] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:46:08,377 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:46:08,377 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 20 [2022-02-10 02:46:08,377 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625920728] [2022-02-10 02:46:08,377 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:46:08,378 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 02:46:08,378 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:46:08,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 02:46:08,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=269, Unknown=0, NotChecked=0, Total=380 [2022-02-10 02:46:08,378 INFO L87 Difference]: Start difference. First operand 22372 states and 37907 transitions. Second operand has 20 states, 20 states have (on average 2.85) internal successors, (57), 20 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:09,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:46:09,137 INFO L93 Difference]: Finished difference Result 28127 states and 47437 transitions. [2022-02-10 02:46:09,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-02-10 02:46:09,138 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.85) internal successors, (57), 20 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-02-10 02:46:09,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:46:09,205 INFO L225 Difference]: With dead ends: 28127 [2022-02-10 02:46:09,205 INFO L226 Difference]: Without dead ends: 28118 [2022-02-10 02:46:09,206 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1163 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1464, Invalid=3092, Unknown=0, NotChecked=0, Total=4556 [2022-02-10 02:46:09,206 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 254 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:46:09,206 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [254 Valid, 246 Invalid, 511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 460 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:46:09,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28118 states. [2022-02-10 02:46:09,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28118 to 21250. [2022-02-10 02:46:09,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21250 states, 21249 states have (on average 1.6926443597345757) internal successors, (35967), 21249 states have internal predecessors, (35967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:09,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21250 states to 21250 states and 35967 transitions. [2022-02-10 02:46:09,654 INFO L78 Accepts]: Start accepts. Automaton has 21250 states and 35967 transitions. Word has length 39 [2022-02-10 02:46:09,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:46:09,654 INFO L470 AbstractCegarLoop]: Abstraction has 21250 states and 35967 transitions. [2022-02-10 02:46:09,654 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.85) internal successors, (57), 20 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:09,654 INFO L276 IsEmpty]: Start isEmpty. Operand 21250 states and 35967 transitions. [2022-02-10 02:46:09,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-10 02:46:09,673 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:46:09,673 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:46:09,690 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Ended with exit code 0 [2022-02-10 02:46:09,874 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2022-02-10 02:46:09,874 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:46:09,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:46:09,874 INFO L85 PathProgramCache]: Analyzing trace with hash -2082575670, now seen corresponding path program 76 times [2022-02-10 02:46:09,874 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:46:09,874 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734458765] [2022-02-10 02:46:09,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:46:09,875 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:46:09,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:46:09,943 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 8 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:46:09,944 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:46:09,944 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734458765] [2022-02-10 02:46:09,944 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734458765] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:46:09,944 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2131062437] [2022-02-10 02:46:09,944 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:46:09,944 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:46:09,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:46:09,948 INFO L229 MonitoredProcess]: Starting monitored process 77 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:46:09,949 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2022-02-10 02:46:09,969 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:46:09,969 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:46:09,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-10 02:46:09,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:46:10,128 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 22 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:46:10,128 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:46:10,186 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 8 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:46:10,186 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2131062437] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:46:10,186 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:46:10,186 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 21 [2022-02-10 02:46:10,186 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128511834] [2022-02-10 02:46:10,186 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:46:10,186 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-10 02:46:10,187 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:46:10,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-10 02:46:10,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=322, Unknown=0, NotChecked=0, Total=420 [2022-02-10 02:46:10,187 INFO L87 Difference]: Start difference. First operand 21250 states and 35967 transitions. Second operand has 21 states, 21 states have (on average 3.0) internal successors, (63), 21 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:10,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:46:10,965 INFO L93 Difference]: Finished difference Result 25101 states and 42083 transitions. [2022-02-10 02:46:10,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-02-10 02:46:10,966 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.0) internal successors, (63), 21 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-02-10 02:46:10,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:46:11,008 INFO L225 Difference]: With dead ends: 25101 [2022-02-10 02:46:11,008 INFO L226 Difference]: Without dead ends: 25075 [2022-02-10 02:46:11,009 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 69 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 952 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1149, Invalid=2757, Unknown=0, NotChecked=0, Total=3906 [2022-02-10 02:46:11,009 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 112 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 563 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 563 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:46:11,009 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 321 Invalid, 604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 563 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:46:11,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25075 states. [2022-02-10 02:46:11,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25075 to 21057. [2022-02-10 02:46:11,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21057 states, 21056 states have (on average 1.6908244680851063) internal successors, (35602), 21056 states have internal predecessors, (35602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:11,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21057 states to 21057 states and 35602 transitions. [2022-02-10 02:46:11,500 INFO L78 Accepts]: Start accepts. Automaton has 21057 states and 35602 transitions. Word has length 39 [2022-02-10 02:46:11,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:46:11,501 INFO L470 AbstractCegarLoop]: Abstraction has 21057 states and 35602 transitions. [2022-02-10 02:46:11,501 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.0) internal successors, (63), 21 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:11,501 INFO L276 IsEmpty]: Start isEmpty. Operand 21057 states and 35602 transitions. [2022-02-10 02:46:11,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-10 02:46:11,521 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:46:11,521 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:46:11,546 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Ended with exit code 0 [2022-02-10 02:46:11,722 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,77 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:46:11,722 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:46:11,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:46:11,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1884524398, now seen corresponding path program 77 times [2022-02-10 02:46:11,723 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:46:11,723 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018765999] [2022-02-10 02:46:11,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:46:11,723 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:46:11,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:46:11,785 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 8 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:46:11,785 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:46:11,785 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018765999] [2022-02-10 02:46:11,786 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018765999] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:46:11,786 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [579447216] [2022-02-10 02:46:11,786 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:46:11,786 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:46:11,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:46:11,787 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:46:11,788 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2022-02-10 02:46:11,808 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-02-10 02:46:11,808 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:46:11,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-10 02:46:11,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:46:11,976 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 22 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:46:11,977 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:46:12,034 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 8 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:46:12,034 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [579447216] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:46:12,034 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:46:12,034 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 12] total 20 [2022-02-10 02:46:12,034 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292211712] [2022-02-10 02:46:12,034 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:46:12,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 02:46:12,035 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:46:12,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 02:46:12,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=291, Unknown=0, NotChecked=0, Total=380 [2022-02-10 02:46:12,035 INFO L87 Difference]: Start difference. First operand 21057 states and 35602 transitions. Second operand has 20 states, 20 states have (on average 3.15) internal successors, (63), 20 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:12,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:46:12,763 INFO L93 Difference]: Finished difference Result 26012 states and 43513 transitions. [2022-02-10 02:46:12,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-02-10 02:46:12,764 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.15) internal successors, (63), 20 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-02-10 02:46:12,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:46:12,801 INFO L225 Difference]: With dead ends: 26012 [2022-02-10 02:46:12,802 INFO L226 Difference]: Without dead ends: 25997 [2022-02-10 02:46:12,802 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 962 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1144, Invalid=2762, Unknown=0, NotChecked=0, Total=3906 [2022-02-10 02:46:12,803 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 138 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 592 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:46:12,803 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [138 Valid, 308 Invalid, 633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 592 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:46:12,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25997 states. [2022-02-10 02:46:13,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25997 to 20807. [2022-02-10 02:46:13,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20807 states, 20806 states have (on average 1.6894165144669806) internal successors, (35150), 20806 states have internal predecessors, (35150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:13,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20807 states to 20807 states and 35150 transitions. [2022-02-10 02:46:13,162 INFO L78 Accepts]: Start accepts. Automaton has 20807 states and 35150 transitions. Word has length 39 [2022-02-10 02:46:13,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:46:13,162 INFO L470 AbstractCegarLoop]: Abstraction has 20807 states and 35150 transitions. [2022-02-10 02:46:13,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.15) internal successors, (63), 20 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:13,162 INFO L276 IsEmpty]: Start isEmpty. Operand 20807 states and 35150 transitions. [2022-02-10 02:46:13,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-10 02:46:13,180 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:46:13,180 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:46:13,196 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Ended with exit code 0 [2022-02-10 02:46:13,380 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,78 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:46:13,381 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:46:13,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:46:13,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1839824842, now seen corresponding path program 78 times [2022-02-10 02:46:13,381 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:46:13,381 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171927041] [2022-02-10 02:46:13,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:46:13,381 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:46:13,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:46:13,428 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 8 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:46:13,429 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:46:13,429 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171927041] [2022-02-10 02:46:13,429 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171927041] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:46:13,429 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [58533123] [2022-02-10 02:46:13,429 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:46:13,429 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:46:13,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:46:13,430 INFO L229 MonitoredProcess]: Starting monitored process 79 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:46:13,431 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2022-02-10 02:46:13,454 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2022-02-10 02:46:13,455 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:46:13,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-10 02:46:13,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:46:13,648 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 22 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:46:13,648 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:46:13,710 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 8 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:46:13,710 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [58533123] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:46:13,710 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:46:13,710 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 11] total 19 [2022-02-10 02:46:13,710 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590982656] [2022-02-10 02:46:13,710 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:46:13,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-10 02:46:13,710 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:46:13,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-10 02:46:13,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2022-02-10 02:46:13,711 INFO L87 Difference]: Start difference. First operand 20807 states and 35150 transitions. Second operand has 19 states, 19 states have (on average 3.3157894736842106) internal successors, (63), 19 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:14,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:46:14,458 INFO L93 Difference]: Finished difference Result 31204 states and 52428 transitions. [2022-02-10 02:46:14,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-02-10 02:46:14,458 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.3157894736842106) internal successors, (63), 19 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-02-10 02:46:14,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:46:14,522 INFO L225 Difference]: With dead ends: 31204 [2022-02-10 02:46:14,522 INFO L226 Difference]: Without dead ends: 31200 [2022-02-10 02:46:14,523 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1177 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1376, Invalid=3046, Unknown=0, NotChecked=0, Total=4422 [2022-02-10 02:46:14,523 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 183 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 453 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:46:14,523 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [183 Valid, 235 Invalid, 507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 453 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:46:14,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31200 states. [2022-02-10 02:46:14,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31200 to 22432. [2022-02-10 02:46:14,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22432 states, 22431 states have (on average 1.6899380321875974) internal successors, (37907), 22431 states have internal predecessors, (37907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:14,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22432 states to 22432 states and 37907 transitions. [2022-02-10 02:46:14,928 INFO L78 Accepts]: Start accepts. Automaton has 22432 states and 37907 transitions. Word has length 39 [2022-02-10 02:46:14,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:46:14,928 INFO L470 AbstractCegarLoop]: Abstraction has 22432 states and 37907 transitions. [2022-02-10 02:46:14,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.3157894736842106) internal successors, (63), 19 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:14,928 INFO L276 IsEmpty]: Start isEmpty. Operand 22432 states and 37907 transitions. [2022-02-10 02:46:14,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-10 02:46:14,948 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:46:14,948 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:46:14,972 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Forceful destruction successful, exit code 0 [2022-02-10 02:46:15,148 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,79 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:46:15,149 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:46:15,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:46:15,149 INFO L85 PathProgramCache]: Analyzing trace with hash -691962990, now seen corresponding path program 79 times [2022-02-10 02:46:15,149 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:46:15,149 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9061894] [2022-02-10 02:46:15,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:46:15,150 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:46:15,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:46:15,198 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 8 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:46:15,198 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:46:15,199 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9061894] [2022-02-10 02:46:15,199 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9061894] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:46:15,199 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1089925299] [2022-02-10 02:46:15,199 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:46:15,199 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:46:15,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:46:15,200 INFO L229 MonitoredProcess]: Starting monitored process 80 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:46:15,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2022-02-10 02:46:15,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:46:15,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-10 02:46:15,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:46:15,400 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 22 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:46:15,400 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:46:15,460 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 8 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:46:15,460 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1089925299] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:46:15,460 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:46:15,460 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 11] total 19 [2022-02-10 02:46:15,461 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617063624] [2022-02-10 02:46:15,461 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:46:15,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-10 02:46:15,461 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:46:15,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-10 02:46:15,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2022-02-10 02:46:15,461 INFO L87 Difference]: Start difference. First operand 22432 states and 37907 transitions. Second operand has 19 states, 19 states have (on average 3.3157894736842106) internal successors, (63), 19 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:16,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:46:16,395 INFO L93 Difference]: Finished difference Result 34971 states and 58692 transitions. [2022-02-10 02:46:16,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-02-10 02:46:16,396 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.3157894736842106) internal successors, (63), 19 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-02-10 02:46:16,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:46:16,466 INFO L225 Difference]: With dead ends: 34971 [2022-02-10 02:46:16,467 INFO L226 Difference]: Without dead ends: 34971 [2022-02-10 02:46:16,468 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1889 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1982, Invalid=4180, Unknown=0, NotChecked=0, Total=6162 [2022-02-10 02:46:16,468 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 225 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 591 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:46:16,468 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [225 Valid, 327 Invalid, 659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 591 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:46:16,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34971 states. [2022-02-10 02:46:16,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34971 to 23657. [2022-02-10 02:46:17,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23657 states, 23656 states have (on average 1.6923402096719649) internal successors, (40034), 23656 states have internal predecessors, (40034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:17,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23657 states to 23657 states and 40034 transitions. [2022-02-10 02:46:17,051 INFO L78 Accepts]: Start accepts. Automaton has 23657 states and 40034 transitions. Word has length 39 [2022-02-10 02:46:17,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:46:17,051 INFO L470 AbstractCegarLoop]: Abstraction has 23657 states and 40034 transitions. [2022-02-10 02:46:17,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.3157894736842106) internal successors, (63), 19 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:17,052 INFO L276 IsEmpty]: Start isEmpty. Operand 23657 states and 40034 transitions. [2022-02-10 02:46:17,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-10 02:46:17,070 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:46:17,070 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:46:17,087 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Ended with exit code 0 [2022-02-10 02:46:17,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 80 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable83 [2022-02-10 02:46:17,271 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:46:17,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:46:17,271 INFO L85 PathProgramCache]: Analyzing trace with hash 455947086, now seen corresponding path program 80 times [2022-02-10 02:46:17,272 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:46:17,272 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000005796] [2022-02-10 02:46:17,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:46:17,272 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:46:17,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:46:17,340 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 21 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:46:17,340 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:46:17,340 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000005796] [2022-02-10 02:46:17,340 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000005796] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:46:17,340 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [757039969] [2022-02-10 02:46:17,340 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:46:17,340 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:46:17,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:46:17,341 INFO L229 MonitoredProcess]: Starting monitored process 81 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:46:17,342 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2022-02-10 02:46:17,362 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:46:17,362 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:46:17,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-10 02:46:17,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:46:17,513 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 35 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:46:17,513 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:46:17,575 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 21 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:46:17,575 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [757039969] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:46:17,575 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:46:17,575 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 21 [2022-02-10 02:46:17,575 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546598667] [2022-02-10 02:46:17,575 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:46:17,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-10 02:46:17,576 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:46:17,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-10 02:46:17,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2022-02-10 02:46:17,576 INFO L87 Difference]: Start difference. First operand 23657 states and 40034 transitions. Second operand has 21 states, 21 states have (on average 2.857142857142857) internal successors, (60), 21 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:18,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:46:18,255 INFO L93 Difference]: Finished difference Result 32598 states and 54931 transitions. [2022-02-10 02:46:18,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-02-10 02:46:18,256 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.857142857142857) internal successors, (60), 21 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-02-10 02:46:18,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:46:18,313 INFO L225 Difference]: With dead ends: 32598 [2022-02-10 02:46:18,313 INFO L226 Difference]: Without dead ends: 32580 [2022-02-10 02:46:18,314 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 69 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1267 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1406, Invalid=3286, Unknown=0, NotChecked=0, Total=4692 [2022-02-10 02:46:18,314 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 272 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:46:18,314 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [272 Valid, 202 Invalid, 461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 384 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:46:18,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32580 states. [2022-02-10 02:46:18,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32580 to 23391. [2022-02-10 02:46:18,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23391 states, 23390 states have (on average 1.6903805044890978) internal successors, (39538), 23390 states have internal predecessors, (39538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:18,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23391 states to 23391 states and 39538 transitions. [2022-02-10 02:46:18,761 INFO L78 Accepts]: Start accepts. Automaton has 23391 states and 39538 transitions. Word has length 39 [2022-02-10 02:46:18,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:46:18,761 INFO L470 AbstractCegarLoop]: Abstraction has 23391 states and 39538 transitions. [2022-02-10 02:46:18,761 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.857142857142857) internal successors, (60), 21 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:18,761 INFO L276 IsEmpty]: Start isEmpty. Operand 23391 states and 39538 transitions. [2022-02-10 02:46:18,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-10 02:46:18,782 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:46:18,782 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:46:18,800 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Ended with exit code 0 [2022-02-10 02:46:18,982 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,81 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:46:18,983 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:46:18,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:46:18,983 INFO L85 PathProgramCache]: Analyzing trace with hash -1164874180, now seen corresponding path program 81 times [2022-02-10 02:46:18,983 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:46:18,983 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436595352] [2022-02-10 02:46:18,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:46:18,983 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:46:18,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:46:19,054 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 10 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:46:19,055 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:46:19,055 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436595352] [2022-02-10 02:46:19,055 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436595352] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:46:19,055 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [152497646] [2022-02-10 02:46:19,055 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:46:19,055 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:46:19,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:46:19,056 INFO L229 MonitoredProcess]: Starting monitored process 82 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:46:19,057 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2022-02-10 02:46:19,077 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-02-10 02:46:19,077 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:46:19,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-10 02:46:19,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:46:19,272 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 22 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:46:19,273 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:46:19,334 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 10 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:46:19,334 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [152497646] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:46:19,334 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:46:19,334 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 22 [2022-02-10 02:46:19,334 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900261814] [2022-02-10 02:46:19,334 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:46:19,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-10 02:46:19,334 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:46:19,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-10 02:46:19,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=355, Unknown=0, NotChecked=0, Total=462 [2022-02-10 02:46:19,335 INFO L87 Difference]: Start difference. First operand 23391 states and 39538 transitions. Second operand has 22 states, 22 states have (on average 3.0) internal successors, (66), 22 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:20,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:46:20,143 INFO L93 Difference]: Finished difference Result 25939 states and 43408 transitions. [2022-02-10 02:46:20,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-02-10 02:46:20,143 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.0) internal successors, (66), 22 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-02-10 02:46:20,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:46:20,186 INFO L225 Difference]: With dead ends: 25939 [2022-02-10 02:46:20,186 INFO L226 Difference]: Without dead ends: 25913 [2022-02-10 02:46:20,187 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 68 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1090 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1198, Invalid=3092, Unknown=0, NotChecked=0, Total=4290 [2022-02-10 02:46:20,187 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 136 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 535 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:46:20,187 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 289 Invalid, 588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 535 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:46:20,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25913 states. [2022-02-10 02:46:20,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25913 to 23035. [2022-02-10 02:46:20,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23035 states, 23034 states have (on average 1.6884605365980725) internal successors, (38892), 23034 states have internal predecessors, (38892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:20,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23035 states to 23035 states and 38892 transitions. [2022-02-10 02:46:20,582 INFO L78 Accepts]: Start accepts. Automaton has 23035 states and 38892 transitions. Word has length 39 [2022-02-10 02:46:20,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:46:20,582 INFO L470 AbstractCegarLoop]: Abstraction has 23035 states and 38892 transitions. [2022-02-10 02:46:20,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.0) internal successors, (66), 22 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:20,582 INFO L276 IsEmpty]: Start isEmpty. Operand 23035 states and 38892 transitions. [2022-02-10 02:46:20,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-10 02:46:20,604 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:46:20,604 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:46:20,622 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Ended with exit code 0 [2022-02-10 02:46:20,806 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,82 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:46:20,806 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:46:20,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:46:20,806 INFO L85 PathProgramCache]: Analyzing trace with hash 1665276328, now seen corresponding path program 82 times [2022-02-10 02:46:20,806 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:46:20,806 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391407101] [2022-02-10 02:46:20,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:46:20,807 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:46:20,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:46:20,856 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 10 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:46:20,856 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:46:20,856 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391407101] [2022-02-10 02:46:20,856 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391407101] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:46:20,856 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1436686606] [2022-02-10 02:46:20,856 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:46:20,856 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:46:20,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:46:20,857 INFO L229 MonitoredProcess]: Starting monitored process 83 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:46:20,858 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2022-02-10 02:46:20,878 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:46:20,878 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:46:20,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-10 02:46:20,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:46:21,041 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 22 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:46:21,042 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:46:21,103 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 10 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:46:21,103 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1436686606] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:46:21,103 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:46:21,103 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 12] total 21 [2022-02-10 02:46:21,103 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231195786] [2022-02-10 02:46:21,103 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:46:21,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-10 02:46:21,103 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:46:21,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-10 02:46:21,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=323, Unknown=0, NotChecked=0, Total=420 [2022-02-10 02:46:21,104 INFO L87 Difference]: Start difference. First operand 23035 states and 38892 transitions. Second operand has 21 states, 21 states have (on average 3.142857142857143) internal successors, (66), 21 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:21,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:46:21,876 INFO L93 Difference]: Finished difference Result 28089 states and 46904 transitions. [2022-02-10 02:46:21,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-02-10 02:46:21,876 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.142857142857143) internal successors, (66), 21 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-02-10 02:46:21,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:46:21,929 INFO L225 Difference]: With dead ends: 28089 [2022-02-10 02:46:21,929 INFO L226 Difference]: Without dead ends: 28074 [2022-02-10 02:46:21,930 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 69 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1084 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1171, Invalid=2989, Unknown=0, NotChecked=0, Total=4160 [2022-02-10 02:46:21,930 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 178 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 554 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:46:21,930 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [178 Valid, 300 Invalid, 604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 554 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:46:21,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28074 states. [2022-02-10 02:46:22,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28074 to 21548. [2022-02-10 02:46:22,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21548 states, 21547 states have (on average 1.6851069754490184) internal successors, (36309), 21547 states have internal predecessors, (36309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:22,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21548 states to 21548 states and 36309 transitions. [2022-02-10 02:46:22,373 INFO L78 Accepts]: Start accepts. Automaton has 21548 states and 36309 transitions. Word has length 39 [2022-02-10 02:46:22,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:46:22,373 INFO L470 AbstractCegarLoop]: Abstraction has 21548 states and 36309 transitions. [2022-02-10 02:46:22,373 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.142857142857143) internal successors, (66), 21 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:22,373 INFO L276 IsEmpty]: Start isEmpty. Operand 21548 states and 36309 transitions. [2022-02-10 02:46:22,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-10 02:46:22,390 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:46:22,391 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:46:22,406 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Ended with exit code 0 [2022-02-10 02:46:22,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable86 [2022-02-10 02:46:22,591 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:46:22,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:46:22,592 INFO L85 PathProgramCache]: Analyzing trace with hash 568526268, now seen corresponding path program 83 times [2022-02-10 02:46:22,592 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:46:22,592 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383824424] [2022-02-10 02:46:22,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:46:22,592 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:46:22,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:46:22,636 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 10 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:46:22,636 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:46:22,636 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383824424] [2022-02-10 02:46:22,636 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383824424] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:46:22,636 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [518229428] [2022-02-10 02:46:22,636 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:46:22,636 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:46:22,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:46:22,637 INFO L229 MonitoredProcess]: Starting monitored process 84 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:46:22,638 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2022-02-10 02:46:22,660 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-02-10 02:46:22,660 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:46:22,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-10 02:46:22,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:46:22,810 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 22 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:46:22,811 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:46:22,865 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 10 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:46:22,866 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [518229428] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:46:22,866 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:46:22,866 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 11] total 20 [2022-02-10 02:46:22,866 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891299330] [2022-02-10 02:46:22,866 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:46:22,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 02:46:22,866 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:46:22,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 02:46:22,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=288, Unknown=0, NotChecked=0, Total=380 [2022-02-10 02:46:22,867 INFO L87 Difference]: Start difference. First operand 21548 states and 36309 transitions. Second operand has 20 states, 20 states have (on average 3.3) internal successors, (66), 20 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:23,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:46:23,748 INFO L93 Difference]: Finished difference Result 33087 states and 55418 transitions. [2022-02-10 02:46:23,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-02-10 02:46:23,748 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.3) internal successors, (66), 20 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-02-10 02:46:23,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:46:23,802 INFO L225 Difference]: With dead ends: 33087 [2022-02-10 02:46:23,802 INFO L226 Difference]: Without dead ends: 33083 [2022-02-10 02:46:23,803 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1561 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1551, Invalid=3561, Unknown=0, NotChecked=0, Total=5112 [2022-02-10 02:46:23,803 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 234 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 606 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:46:23,803 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [234 Valid, 351 Invalid, 666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 606 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:46:23,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33083 states. [2022-02-10 02:46:24,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33083 to 20917. [2022-02-10 02:46:24,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20917 states, 20916 states have (on average 1.6827309236947792) internal successors, (35196), 20916 states have internal predecessors, (35196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:24,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20917 states to 20917 states and 35196 transitions. [2022-02-10 02:46:24,173 INFO L78 Accepts]: Start accepts. Automaton has 20917 states and 35196 transitions. Word has length 39 [2022-02-10 02:46:24,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:46:24,174 INFO L470 AbstractCegarLoop]: Abstraction has 20917 states and 35196 transitions. [2022-02-10 02:46:24,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.3) internal successors, (66), 20 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:24,174 INFO L276 IsEmpty]: Start isEmpty. Operand 20917 states and 35196 transitions. [2022-02-10 02:46:24,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-10 02:46:24,190 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:46:24,190 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:46:24,208 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Ended with exit code 0 [2022-02-10 02:46:24,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87,84 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:46:24,390 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:46:24,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:46:24,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1717325272, now seen corresponding path program 84 times [2022-02-10 02:46:24,391 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:46:24,391 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521544815] [2022-02-10 02:46:24,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:46:24,391 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:46:24,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:46:24,445 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 10 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:46:24,445 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:46:24,445 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521544815] [2022-02-10 02:46:24,445 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521544815] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:46:24,445 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [941784456] [2022-02-10 02:46:24,445 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:46:24,445 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:46:24,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:46:24,447 INFO L229 MonitoredProcess]: Starting monitored process 85 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:46:24,448 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2022-02-10 02:46:24,469 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2022-02-10 02:46:24,469 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:46:24,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-10 02:46:24,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:46:24,636 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 22 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:46:24,636 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:46:24,692 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 10 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:46:24,692 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [941784456] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:46:24,692 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:46:24,692 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13, 10] total 19 [2022-02-10 02:46:24,692 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562999486] [2022-02-10 02:46:24,692 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:46:24,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-10 02:46:24,692 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:46:24,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-10 02:46:24,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2022-02-10 02:46:24,693 INFO L87 Difference]: Start difference. First operand 20917 states and 35196 transitions. Second operand has 19 states, 19 states have (on average 3.473684210526316) internal successors, (66), 19 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:25,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:46:25,678 INFO L93 Difference]: Finished difference Result 38085 states and 64131 transitions. [2022-02-10 02:46:25,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-02-10 02:46:25,678 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.473684210526316) internal successors, (66), 19 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-02-10 02:46:25,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:46:25,761 INFO L225 Difference]: With dead ends: 38085 [2022-02-10 02:46:25,761 INFO L226 Difference]: Without dead ends: 38085 [2022-02-10 02:46:25,763 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2358 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=2217, Invalid=4589, Unknown=0, NotChecked=0, Total=6806 [2022-02-10 02:46:25,763 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 248 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 496 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:46:25,763 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [248 Valid, 292 Invalid, 571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 496 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:46:25,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38085 states. [2022-02-10 02:46:26,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38085 to 23208. [2022-02-10 02:46:26,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23208 states, 23207 states have (on average 1.6878958934804154) internal successors, (39171), 23207 states have internal predecessors, (39171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:26,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23208 states to 23208 states and 39171 transitions. [2022-02-10 02:46:26,240 INFO L78 Accepts]: Start accepts. Automaton has 23208 states and 39171 transitions. Word has length 39 [2022-02-10 02:46:26,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:46:26,240 INFO L470 AbstractCegarLoop]: Abstraction has 23208 states and 39171 transitions. [2022-02-10 02:46:26,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.473684210526316) internal successors, (66), 19 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:26,240 INFO L276 IsEmpty]: Start isEmpty. Operand 23208 states and 39171 transitions. [2022-02-10 02:46:26,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-10 02:46:26,259 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:46:26,259 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:46:26,284 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Ended with exit code 0 [2022-02-10 02:46:26,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88,85 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:46:26,459 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:46:26,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:46:26,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1746567122, now seen corresponding path program 85 times [2022-02-10 02:46:26,460 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:46:26,460 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650981414] [2022-02-10 02:46:26,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:46:26,460 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:46:26,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:46:26,520 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 25 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:46:26,520 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:46:26,520 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650981414] [2022-02-10 02:46:26,520 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650981414] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:46:26,521 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [208190603] [2022-02-10 02:46:26,521 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:46:26,521 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:46:26,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:46:26,523 INFO L229 MonitoredProcess]: Starting monitored process 86 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:46:26,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2022-02-10 02:46:26,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:46:26,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-10 02:46:26,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:46:26,722 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 35 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:46:26,722 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:46:26,782 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 25 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:46:26,782 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [208190603] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:46:26,782 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:46:26,782 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 22 [2022-02-10 02:46:26,782 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502414967] [2022-02-10 02:46:26,782 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:46:26,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-10 02:46:26,782 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:46:26,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-10 02:46:26,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=345, Unknown=0, NotChecked=0, Total=462 [2022-02-10 02:46:26,783 INFO L87 Difference]: Start difference. First operand 23208 states and 39171 transitions. Second operand has 22 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:27,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:46:27,461 INFO L93 Difference]: Finished difference Result 34187 states and 57489 transitions. [2022-02-10 02:46:27,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-02-10 02:46:27,461 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-02-10 02:46:27,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:46:27,531 INFO L225 Difference]: With dead ends: 34187 [2022-02-10 02:46:27,531 INFO L226 Difference]: Without dead ends: 34163 [2022-02-10 02:46:27,532 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 68 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1305 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1314, Invalid=3378, Unknown=0, NotChecked=0, Total=4692 [2022-02-10 02:46:27,532 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 247 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:46:27,532 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [247 Valid, 180 Invalid, 427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 347 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:46:27,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34163 states. [2022-02-10 02:46:27,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34163 to 23176. [2022-02-10 02:46:28,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23176 states, 23175 states have (on average 1.686084142394822) internal successors, (39075), 23175 states have internal predecessors, (39075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:28,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23176 states to 23176 states and 39075 transitions. [2022-02-10 02:46:28,042 INFO L78 Accepts]: Start accepts. Automaton has 23176 states and 39075 transitions. Word has length 39 [2022-02-10 02:46:28,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:46:28,043 INFO L470 AbstractCegarLoop]: Abstraction has 23176 states and 39075 transitions. [2022-02-10 02:46:28,043 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:28,043 INFO L276 IsEmpty]: Start isEmpty. Operand 23176 states and 39075 transitions. [2022-02-10 02:46:28,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-10 02:46:28,060 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:46:28,060 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:46:28,076 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Ended with exit code 0 [2022-02-10 02:46:28,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 86 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable89 [2022-02-10 02:46:28,261 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:46:28,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:46:28,261 INFO L85 PathProgramCache]: Analyzing trace with hash 613375370, now seen corresponding path program 86 times [2022-02-10 02:46:28,261 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:46:28,262 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900503695] [2022-02-10 02:46:28,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:46:28,262 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:46:28,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:46:28,338 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 18 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:46:28,339 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:46:28,339 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900503695] [2022-02-10 02:46:28,339 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900503695] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:46:28,339 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [24186913] [2022-02-10 02:46:28,339 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:46:28,339 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:46:28,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:46:28,340 INFO L229 MonitoredProcess]: Starting monitored process 87 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:46:28,341 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Waiting until timeout for monitored process [2022-02-10 02:46:28,360 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:46:28,361 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:46:28,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-10 02:46:28,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:46:28,535 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 22 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:46:28,536 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:46:28,595 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 18 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:46:28,595 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [24186913] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:46:28,595 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:46:28,595 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 23 [2022-02-10 02:46:28,595 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184264048] [2022-02-10 02:46:28,595 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:46:28,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-10 02:46:28,595 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:46:28,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-10 02:46:28,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=388, Unknown=0, NotChecked=0, Total=506 [2022-02-10 02:46:28,596 INFO L87 Difference]: Start difference. First operand 23176 states and 39075 transitions. Second operand has 23 states, 23 states have (on average 3.0) internal successors, (69), 23 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:29,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:46:29,417 INFO L93 Difference]: Finished difference Result 29871 states and 49778 transitions. [2022-02-10 02:46:29,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-02-10 02:46:29,418 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.0) internal successors, (69), 23 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-02-10 02:46:29,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:46:29,481 INFO L225 Difference]: With dead ends: 29871 [2022-02-10 02:46:29,481 INFO L226 Difference]: Without dead ends: 29845 [2022-02-10 02:46:29,482 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 67 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1194 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1236, Invalid=3320, Unknown=0, NotChecked=0, Total=4556 [2022-02-10 02:46:29,482 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 143 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:46:29,482 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [143 Valid, 311 Invalid, 590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 538 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:46:29,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29845 states. [2022-02-10 02:46:29,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29845 to 24920. [2022-02-10 02:46:29,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24920 states, 24919 states have (on average 1.6837754324009793) internal successors, (41958), 24919 states have internal predecessors, (41958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:29,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24920 states to 24920 states and 41958 transitions. [2022-02-10 02:46:29,953 INFO L78 Accepts]: Start accepts. Automaton has 24920 states and 41958 transitions. Word has length 39 [2022-02-10 02:46:29,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:46:29,953 INFO L470 AbstractCegarLoop]: Abstraction has 24920 states and 41958 transitions. [2022-02-10 02:46:29,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.0) internal successors, (69), 23 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:29,954 INFO L276 IsEmpty]: Start isEmpty. Operand 24920 states and 41958 transitions. [2022-02-10 02:46:29,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-10 02:46:29,973 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:46:29,973 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:46:29,989 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Ended with exit code 0 [2022-02-10 02:46:30,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,87 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:46:30,173 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:46:30,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:46:30,174 INFO L85 PathProgramCache]: Analyzing trace with hash -1201024814, now seen corresponding path program 87 times [2022-02-10 02:46:30,174 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:46:30,174 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142223380] [2022-02-10 02:46:30,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:46:30,174 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:46:30,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:46:30,237 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 18 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:46:30,237 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:46:30,237 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142223380] [2022-02-10 02:46:30,237 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142223380] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:46:30,237 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [341539232] [2022-02-10 02:46:30,237 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:46:30,237 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:46:30,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:46:30,238 INFO L229 MonitoredProcess]: Starting monitored process 88 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:46:30,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Waiting until timeout for monitored process [2022-02-10 02:46:30,260 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-02-10 02:46:30,260 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:46:30,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-10 02:46:30,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:46:30,449 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 22 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:46:30,449 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:46:30,507 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 18 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:46:30,507 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [341539232] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:46:30,507 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:46:30,507 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 12] total 22 [2022-02-10 02:46:30,507 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303193884] [2022-02-10 02:46:30,507 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:46:30,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-10 02:46:30,507 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:46:30,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-10 02:46:30,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=355, Unknown=0, NotChecked=0, Total=462 [2022-02-10 02:46:30,508 INFO L87 Difference]: Start difference. First operand 24920 states and 41958 transitions. Second operand has 22 states, 22 states have (on average 3.1363636363636362) internal successors, (69), 22 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:31,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:46:31,317 INFO L93 Difference]: Finished difference Result 35338 states and 58892 transitions. [2022-02-10 02:46:31,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-02-10 02:46:31,318 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.1363636363636362) internal successors, (69), 22 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-02-10 02:46:31,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:46:31,378 INFO L225 Difference]: With dead ends: 35338 [2022-02-10 02:46:31,378 INFO L226 Difference]: Without dead ends: 35323 [2022-02-10 02:46:31,379 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 68 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1423 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1294, Invalid=3536, Unknown=0, NotChecked=0, Total=4830 [2022-02-10 02:46:31,379 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 225 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:46:31,379 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [225 Valid, 269 Invalid, 500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:46:31,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35323 states. [2022-02-10 02:46:31,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35323 to 26081. [2022-02-10 02:46:31,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26081 states, 26080 states have (on average 1.681786809815951) internal successors, (43861), 26080 states have internal predecessors, (43861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:31,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26081 states to 26081 states and 43861 transitions. [2022-02-10 02:46:31,890 INFO L78 Accepts]: Start accepts. Automaton has 26081 states and 43861 transitions. Word has length 39 [2022-02-10 02:46:31,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:46:31,890 INFO L470 AbstractCegarLoop]: Abstraction has 26081 states and 43861 transitions. [2022-02-10 02:46:31,890 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.1363636363636362) internal successors, (69), 22 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:31,890 INFO L276 IsEmpty]: Start isEmpty. Operand 26081 states and 43861 transitions. [2022-02-10 02:46:31,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-10 02:46:31,911 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:46:31,911 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:46:31,930 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Ended with exit code 0 [2022-02-10 02:46:32,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,88 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:46:32,112 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:46:32,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:46:32,112 INFO L85 PathProgramCache]: Analyzing trace with hash 334324362, now seen corresponding path program 88 times [2022-02-10 02:46:32,112 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:46:32,112 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536923233] [2022-02-10 02:46:32,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:46:32,113 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:46:32,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:46:32,160 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 18 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:46:32,160 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:46:32,160 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536923233] [2022-02-10 02:46:32,161 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536923233] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:46:32,161 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [436814139] [2022-02-10 02:46:32,161 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:46:32,161 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:46:32,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:46:32,162 INFO L229 MonitoredProcess]: Starting monitored process 89 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:46:32,163 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Waiting until timeout for monitored process [2022-02-10 02:46:32,182 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:46:32,182 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:46:32,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-10 02:46:32,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:46:32,351 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 22 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:46:32,351 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:46:32,407 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 18 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:46:32,408 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [436814139] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:46:32,408 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:46:32,408 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 11] total 21 [2022-02-10 02:46:32,408 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147199289] [2022-02-10 02:46:32,408 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:46:32,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-10 02:46:32,408 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:46:32,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-10 02:46:32,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=319, Unknown=0, NotChecked=0, Total=420 [2022-02-10 02:46:32,409 INFO L87 Difference]: Start difference. First operand 26081 states and 43861 transitions. Second operand has 21 states, 21 states have (on average 3.2857142857142856) internal successors, (69), 21 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:33,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:46:33,421 INFO L93 Difference]: Finished difference Result 39529 states and 66101 transitions. [2022-02-10 02:46:33,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-02-10 02:46:33,421 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.2857142857142856) internal successors, (69), 21 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-02-10 02:46:33,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:46:33,485 INFO L225 Difference]: With dead ends: 39529 [2022-02-10 02:46:33,485 INFO L226 Difference]: Without dead ends: 39525 [2022-02-10 02:46:33,486 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 69 SyntacticMatches, 1 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2334 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1861, Invalid=4619, Unknown=0, NotChecked=0, Total=6480 [2022-02-10 02:46:33,486 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 250 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 517 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:46:33,486 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [250 Valid, 296 Invalid, 593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 517 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:46:33,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39525 states. [2022-02-10 02:46:33,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39525 to 27134. [2022-02-10 02:46:33,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27134 states, 27133 states have (on average 1.6782147200825563) internal successors, (45535), 27133 states have internal predecessors, (45535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:34,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27134 states to 27134 states and 45535 transitions. [2022-02-10 02:46:34,042 INFO L78 Accepts]: Start accepts. Automaton has 27134 states and 45535 transitions. Word has length 39 [2022-02-10 02:46:34,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:46:34,043 INFO L470 AbstractCegarLoop]: Abstraction has 27134 states and 45535 transitions. [2022-02-10 02:46:34,043 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.2857142857142856) internal successors, (69), 21 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:34,043 INFO L276 IsEmpty]: Start isEmpty. Operand 27134 states and 45535 transitions. [2022-02-10 02:46:34,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-10 02:46:34,062 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:46:34,062 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:46:34,078 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Forceful destruction successful, exit code 0 [2022-02-10 02:46:34,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,89 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:46:34,275 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:46:34,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:46:34,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1817308114, now seen corresponding path program 89 times [2022-02-10 02:46:34,276 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:46:34,276 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192383265] [2022-02-10 02:46:34,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:46:34,276 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:46:34,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:46:34,314 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 18 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:46:34,314 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:46:34,314 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192383265] [2022-02-10 02:46:34,314 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192383265] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:46:34,314 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [719597368] [2022-02-10 02:46:34,314 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:46:34,314 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:46:34,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:46:34,315 INFO L229 MonitoredProcess]: Starting monitored process 90 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:46:34,316 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Waiting until timeout for monitored process [2022-02-10 02:46:34,335 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-02-10 02:46:34,335 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:46:34,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-10 02:46:34,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:46:34,493 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 22 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:46:34,493 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:46:34,550 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 18 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:46:34,550 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [719597368] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:46:34,551 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:46:34,551 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13, 10] total 20 [2022-02-10 02:46:34,551 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354231107] [2022-02-10 02:46:34,551 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:46:34,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 02:46:34,551 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:46:34,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 02:46:34,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2022-02-10 02:46:34,551 INFO L87 Difference]: Start difference. First operand 27134 states and 45535 transitions. Second operand has 20 states, 20 states have (on average 3.45) internal successors, (69), 20 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:35,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:46:35,816 INFO L93 Difference]: Finished difference Result 45785 states and 76908 transitions. [2022-02-10 02:46:35,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-02-10 02:46:35,816 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.45) internal successors, (69), 20 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-02-10 02:46:35,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:46:35,896 INFO L225 Difference]: With dead ends: 45785 [2022-02-10 02:46:35,896 INFO L226 Difference]: Without dead ends: 45785 [2022-02-10 02:46:35,898 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4120 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=2967, Invalid=6735, Unknown=0, NotChecked=0, Total=9702 [2022-02-10 02:46:35,898 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 234 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 604 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 367 SdHoareTripleChecker+Invalid, 672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:46:35,898 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [234 Valid, 367 Invalid, 672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 604 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:46:35,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45785 states. [2022-02-10 02:46:36,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45785 to 34437. [2022-02-10 02:46:36,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34437 states, 34436 states have (on average 1.680683006156348) internal successors, (57876), 34436 states have internal predecessors, (57876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:36,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34437 states to 34437 states and 57876 transitions. [2022-02-10 02:46:36,574 INFO L78 Accepts]: Start accepts. Automaton has 34437 states and 57876 transitions. Word has length 39 [2022-02-10 02:46:36,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:46:36,574 INFO L470 AbstractCegarLoop]: Abstraction has 34437 states and 57876 transitions. [2022-02-10 02:46:36,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.45) internal successors, (69), 20 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:36,574 INFO L276 IsEmpty]: Start isEmpty. Operand 34437 states and 57876 transitions. [2022-02-10 02:46:36,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-10 02:46:36,595 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:46:36,595 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:46:36,610 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Ended with exit code 0 [2022-02-10 02:46:36,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 90 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable93 [2022-02-10 02:46:36,795 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:46:36,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:46:36,796 INFO L85 PathProgramCache]: Analyzing trace with hash 2060825806, now seen corresponding path program 90 times [2022-02-10 02:46:36,796 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:46:36,796 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837648012] [2022-02-10 02:46:36,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:46:36,796 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:46:36,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:46:36,857 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 35 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:46:36,857 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:46:36,857 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837648012] [2022-02-10 02:46:36,857 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837648012] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:46:36,857 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1773989296] [2022-02-10 02:46:36,857 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:46:36,857 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:46:36,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:46:36,860 INFO L229 MonitoredProcess]: Starting monitored process 91 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:46:36,860 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Waiting until timeout for monitored process [2022-02-10 02:46:36,880 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-02-10 02:46:36,880 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:46:36,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-10 02:46:36,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:46:37,058 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 35 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:46:37,059 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:46:37,120 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 35 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:46:37,120 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1773989296] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:46:37,120 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:46:37,120 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 23 [2022-02-10 02:46:37,120 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48847190] [2022-02-10 02:46:37,120 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:46:37,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-10 02:46:37,121 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:46:37,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-10 02:46:37,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=383, Unknown=0, NotChecked=0, Total=506 [2022-02-10 02:46:37,121 INFO L87 Difference]: Start difference. First operand 34437 states and 57876 transitions. Second operand has 23 states, 23 states have (on average 2.869565217391304) internal successors, (66), 23 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:37,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:46:37,843 INFO L93 Difference]: Finished difference Result 48616 states and 81704 transitions. [2022-02-10 02:46:37,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-02-10 02:46:37,844 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.869565217391304) internal successors, (66), 23 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-02-10 02:46:37,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:46:37,930 INFO L225 Difference]: With dead ends: 48616 [2022-02-10 02:46:37,930 INFO L226 Difference]: Without dead ends: 48590 [2022-02-10 02:46:37,930 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 67 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1394 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1194, Invalid=3362, Unknown=0, NotChecked=0, Total=4556 [2022-02-10 02:46:37,931 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 286 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:46:37,931 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [286 Valid, 173 Invalid, 420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:46:37,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48590 states. [2022-02-10 02:46:38,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48590 to 35438. [2022-02-10 02:46:38,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35438 states, 35437 states have (on average 1.6797697322008072) internal successors, (59526), 35437 states have internal predecessors, (59526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:38,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35438 states to 35438 states and 59526 transitions. [2022-02-10 02:46:38,733 INFO L78 Accepts]: Start accepts. Automaton has 35438 states and 59526 transitions. Word has length 39 [2022-02-10 02:46:38,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:46:38,733 INFO L470 AbstractCegarLoop]: Abstraction has 35438 states and 59526 transitions. [2022-02-10 02:46:38,733 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.869565217391304) internal successors, (66), 23 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:38,734 INFO L276 IsEmpty]: Start isEmpty. Operand 35438 states and 59526 transitions. [2022-02-10 02:46:38,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-02-10 02:46:38,759 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:46:38,759 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:46:38,775 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Ended with exit code 0 [2022-02-10 02:46:38,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,91 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:46:38,959 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:46:38,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:46:38,960 INFO L85 PathProgramCache]: Analyzing trace with hash -278763745, now seen corresponding path program 91 times [2022-02-10 02:46:38,960 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:46:38,960 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818805881] [2022-02-10 02:46:38,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:46:38,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:46:38,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:46:39,023 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:46:39,023 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:46:39,023 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818805881] [2022-02-10 02:46:39,023 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818805881] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:46:39,023 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [285824587] [2022-02-10 02:46:39,023 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:46:39,023 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:46:39,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:46:39,024 INFO L229 MonitoredProcess]: Starting monitored process 92 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:46:39,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Waiting until timeout for monitored process [2022-02-10 02:46:39,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:46:39,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 23 conjunts are in the unsatisfiable core [2022-02-10 02:46:39,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:46:39,163 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:46:39,163 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:46:39,284 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:46:39,284 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [285824587] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:46:39,284 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:46:39,284 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 6 [2022-02-10 02:46:39,284 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121688059] [2022-02-10 02:46:39,284 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:46:39,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-10 02:46:39,285 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:46:39,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-10 02:46:39,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-02-10 02:46:39,285 INFO L87 Difference]: Start difference. First operand 35438 states and 59526 transitions. Second operand has 8 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:39,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:46:39,502 INFO L93 Difference]: Finished difference Result 43088 states and 72430 transitions. [2022-02-10 02:46:39,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-10 02:46:39,502 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2022-02-10 02:46:39,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:46:39,589 INFO L225 Difference]: With dead ends: 43088 [2022-02-10 02:46:39,589 INFO L226 Difference]: Without dead ends: 43083 [2022-02-10 02:46:39,589 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 84 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-02-10 02:46:39,589 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 43 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:46:39,590 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 343 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:46:39,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43083 states. [2022-02-10 02:46:40,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43083 to 39517. [2022-02-10 02:46:40,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39517 states, 39516 states have (on average 1.6842038667881365) internal successors, (66553), 39516 states have internal predecessors, (66553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:40,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39517 states to 39517 states and 66553 transitions. [2022-02-10 02:46:40,276 INFO L78 Accepts]: Start accepts. Automaton has 39517 states and 66553 transitions. Word has length 42 [2022-02-10 02:46:40,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:46:40,276 INFO L470 AbstractCegarLoop]: Abstraction has 39517 states and 66553 transitions. [2022-02-10 02:46:40,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:40,276 INFO L276 IsEmpty]: Start isEmpty. Operand 39517 states and 66553 transitions. [2022-02-10 02:46:40,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-02-10 02:46:40,305 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:46:40,305 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:46:40,322 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Ended with exit code 0 [2022-02-10 02:46:40,506 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95,92 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:46:40,506 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:46:40,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:46:40,507 INFO L85 PathProgramCache]: Analyzing trace with hash -210138649, now seen corresponding path program 92 times [2022-02-10 02:46:40,507 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:46:40,507 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399047612] [2022-02-10 02:46:40,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:46:40,507 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:46:40,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:46:40,567 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 67 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-02-10 02:46:40,567 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:46:40,567 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399047612] [2022-02-10 02:46:40,567 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399047612] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:46:40,567 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [505941006] [2022-02-10 02:46:40,567 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:46:40,567 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:46:40,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:46:40,568 INFO L229 MonitoredProcess]: Starting monitored process 93 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:46:40,569 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Waiting until timeout for monitored process [2022-02-10 02:46:40,590 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:46:40,590 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:46:40,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 23 conjunts are in the unsatisfiable core [2022-02-10 02:46:40,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:46:40,702 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 67 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-02-10 02:46:40,702 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:46:40,814 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 67 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-02-10 02:46:40,814 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [505941006] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:46:40,814 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:46:40,814 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 6 [2022-02-10 02:46:40,814 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198045944] [2022-02-10 02:46:40,815 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:46:40,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-10 02:46:40,815 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:46:40,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-10 02:46:40,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-02-10 02:46:40,815 INFO L87 Difference]: Start difference. First operand 39517 states and 66553 transitions. Second operand has 8 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:41,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:46:41,073 INFO L93 Difference]: Finished difference Result 46426 states and 78194 transitions. [2022-02-10 02:46:41,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-10 02:46:41,074 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2022-02-10 02:46:41,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:46:41,169 INFO L225 Difference]: With dead ends: 46426 [2022-02-10 02:46:41,169 INFO L226 Difference]: Without dead ends: 46408 [2022-02-10 02:46:41,170 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 84 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-02-10 02:46:41,170 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 43 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:46:41,170 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 342 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:46:41,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46408 states. [2022-02-10 02:46:41,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46408 to 40883. [2022-02-10 02:46:41,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40883 states, 40882 states have (on average 1.6889095445428306) internal successors, (69046), 40882 states have internal predecessors, (69046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:41,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40883 states to 40883 states and 69046 transitions. [2022-02-10 02:46:41,993 INFO L78 Accepts]: Start accepts. Automaton has 40883 states and 69046 transitions. Word has length 42 [2022-02-10 02:46:41,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:46:41,993 INFO L470 AbstractCegarLoop]: Abstraction has 40883 states and 69046 transitions. [2022-02-10 02:46:41,993 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:41,993 INFO L276 IsEmpty]: Start isEmpty. Operand 40883 states and 69046 transitions. [2022-02-10 02:46:42,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-02-10 02:46:42,025 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:46:42,025 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:46:42,042 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Ended with exit code 0 [2022-02-10 02:46:42,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96,93 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:46:42,226 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:46:42,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:46:42,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1314273611, now seen corresponding path program 93 times [2022-02-10 02:46:42,226 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:46:42,226 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639943207] [2022-02-10 02:46:42,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:46:42,226 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:46:42,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:46:42,278 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 67 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-02-10 02:46:42,279 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:46:42,279 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639943207] [2022-02-10 02:46:42,279 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639943207] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:46:42,279 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [528262401] [2022-02-10 02:46:42,279 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:46:42,279 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:46:42,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:46:42,280 INFO L229 MonitoredProcess]: Starting monitored process 94 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:46:42,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Waiting until timeout for monitored process [2022-02-10 02:46:42,302 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-02-10 02:46:42,302 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:46:42,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 23 conjunts are in the unsatisfiable core [2022-02-10 02:46:42,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:46:42,414 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 67 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-02-10 02:46:42,414 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:46:42,528 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 67 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-02-10 02:46:42,528 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [528262401] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:46:42,528 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:46:42,528 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 6 [2022-02-10 02:46:42,528 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200987925] [2022-02-10 02:46:42,528 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:46:42,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-10 02:46:42,529 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:46:42,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-10 02:46:42,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-02-10 02:46:42,529 INFO L87 Difference]: Start difference. First operand 40883 states and 69046 transitions. Second operand has 8 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:42,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:46:42,745 INFO L93 Difference]: Finished difference Result 49416 states and 83330 transitions. [2022-02-10 02:46:42,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-10 02:46:42,745 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2022-02-10 02:46:42,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:46:42,836 INFO L225 Difference]: With dead ends: 49416 [2022-02-10 02:46:42,837 INFO L226 Difference]: Without dead ends: 49395 [2022-02-10 02:46:42,837 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 84 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-02-10 02:46:42,837 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 42 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:46:42,837 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 336 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:46:42,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49395 states. [2022-02-10 02:46:43,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49395 to 45379. [2022-02-10 02:46:43,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45379 states, 45378 states have (on average 1.6905769315527348) internal successors, (76715), 45378 states have internal predecessors, (76715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:43,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45379 states to 45379 states and 76715 transitions. [2022-02-10 02:46:43,748 INFO L78 Accepts]: Start accepts. Automaton has 45379 states and 76715 transitions. Word has length 42 [2022-02-10 02:46:43,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:46:43,748 INFO L470 AbstractCegarLoop]: Abstraction has 45379 states and 76715 transitions. [2022-02-10 02:46:43,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:43,748 INFO L276 IsEmpty]: Start isEmpty. Operand 45379 states and 76715 transitions. [2022-02-10 02:46:43,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-02-10 02:46:43,783 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:46:43,783 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:46:43,805 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Ended with exit code 0 [2022-02-10 02:46:43,984 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97,94 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:46:43,984 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:46:43,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:46:43,984 INFO L85 PathProgramCache]: Analyzing trace with hash 555593511, now seen corresponding path program 94 times [2022-02-10 02:46:43,984 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:46:43,984 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805204461] [2022-02-10 02:46:43,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:46:43,985 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:46:43,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:46:44,044 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 67 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-02-10 02:46:44,044 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:46:44,044 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805204461] [2022-02-10 02:46:44,044 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805204461] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:46:44,044 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [249231210] [2022-02-10 02:46:44,044 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:46:44,045 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:46:44,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:46:44,046 INFO L229 MonitoredProcess]: Starting monitored process 95 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:46:44,046 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Waiting until timeout for monitored process [2022-02-10 02:46:44,066 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:46:44,066 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:46:44,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 23 conjunts are in the unsatisfiable core [2022-02-10 02:46:44,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:46:44,217 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 67 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-02-10 02:46:44,218 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:46:44,362 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 67 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-02-10 02:46:44,362 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [249231210] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:46:44,362 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:46:44,362 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 6 [2022-02-10 02:46:44,362 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100194169] [2022-02-10 02:46:44,362 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:46:44,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-10 02:46:44,363 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:46:44,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-10 02:46:44,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-02-10 02:46:44,363 INFO L87 Difference]: Start difference. First operand 45379 states and 76715 transitions. Second operand has 8 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:45,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:46:45,023 INFO L93 Difference]: Finished difference Result 51514 states and 86895 transitions. [2022-02-10 02:46:45,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-10 02:46:45,023 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2022-02-10 02:46:45,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:46:45,121 INFO L225 Difference]: With dead ends: 51514 [2022-02-10 02:46:45,121 INFO L226 Difference]: Without dead ends: 51494 [2022-02-10 02:46:45,121 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 84 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-02-10 02:46:45,122 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 41 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:46:45,122 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 330 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:46:45,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51494 states. [2022-02-10 02:46:46,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51494 to 49052. [2022-02-10 02:46:46,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49052 states, 49051 states have (on average 1.6908931520254429) internal successors, (82940), 49051 states have internal predecessors, (82940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:46,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49052 states to 49052 states and 82940 transitions. [2022-02-10 02:46:46,339 INFO L78 Accepts]: Start accepts. Automaton has 49052 states and 82940 transitions. Word has length 42 [2022-02-10 02:46:46,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:46:46,339 INFO L470 AbstractCegarLoop]: Abstraction has 49052 states and 82940 transitions. [2022-02-10 02:46:46,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:46,339 INFO L276 IsEmpty]: Start isEmpty. Operand 49052 states and 82940 transitions. [2022-02-10 02:46:46,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-02-10 02:46:46,378 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:46:46,378 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:46:46,394 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Ended with exit code 0 [2022-02-10 02:46:46,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 95 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable98 [2022-02-10 02:46:46,578 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:46:46,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:46:46,579 INFO L85 PathProgramCache]: Analyzing trace with hash 41195893, now seen corresponding path program 95 times [2022-02-10 02:46:46,579 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:46:46,579 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071027359] [2022-02-10 02:46:46,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:46:46,579 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:46:46,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:46:46,637 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 67 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-02-10 02:46:46,637 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:46:46,637 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071027359] [2022-02-10 02:46:46,637 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071027359] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:46:46,637 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [636724054] [2022-02-10 02:46:46,637 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:46:46,637 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:46:46,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:46:46,638 INFO L229 MonitoredProcess]: Starting monitored process 96 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:46:46,639 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Waiting until timeout for monitored process [2022-02-10 02:46:46,660 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2022-02-10 02:46:46,660 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:46:46,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 23 conjunts are in the unsatisfiable core [2022-02-10 02:46:46,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:46:46,775 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 67 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-02-10 02:46:46,775 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:46:47,056 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 67 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-02-10 02:46:47,056 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [636724054] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:46:47,056 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:46:47,056 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 6 [2022-02-10 02:46:47,056 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239062415] [2022-02-10 02:46:47,056 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:46:47,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-10 02:46:47,057 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:46:47,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-10 02:46:47,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-02-10 02:46:47,057 INFO L87 Difference]: Start difference. First operand 49052 states and 82940 transitions. Second operand has 8 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:47,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:46:47,422 INFO L93 Difference]: Finished difference Result 52763 states and 89018 transitions. [2022-02-10 02:46:47,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-10 02:46:47,422 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2022-02-10 02:46:47,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:46:47,529 INFO L225 Difference]: With dead ends: 52763 [2022-02-10 02:46:47,529 INFO L226 Difference]: Without dead ends: 52744 [2022-02-10 02:46:47,530 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 84 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-02-10 02:46:47,530 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 40 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:46:47,530 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 325 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:46:47,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52744 states. [2022-02-10 02:46:48,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52744 to 51535. [2022-02-10 02:46:48,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51535 states, 51534 states have (on average 1.6905732138005978) internal successors, (87122), 51534 states have internal predecessors, (87122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:48,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51535 states to 51535 states and 87122 transitions. [2022-02-10 02:46:48,742 INFO L78 Accepts]: Start accepts. Automaton has 51535 states and 87122 transitions. Word has length 42 [2022-02-10 02:46:48,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:46:48,742 INFO L470 AbstractCegarLoop]: Abstraction has 51535 states and 87122 transitions. [2022-02-10 02:46:48,742 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:48,742 INFO L276 IsEmpty]: Start isEmpty. Operand 51535 states and 87122 transitions. [2022-02-10 02:46:48,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-02-10 02:46:48,778 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:46:48,778 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:46:48,795 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Forceful destruction successful, exit code 0 [2022-02-10 02:46:48,980 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable99 [2022-02-10 02:46:48,980 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:46:48,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:46:48,980 INFO L85 PathProgramCache]: Analyzing trace with hash 65070183, now seen corresponding path program 96 times [2022-02-10 02:46:48,980 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:46:48,980 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623255006] [2022-02-10 02:46:48,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:46:48,980 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:46:48,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:46:49,030 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 02:46:49,030 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:46:49,030 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623255006] [2022-02-10 02:46:49,030 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623255006] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:46:49,030 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1721272922] [2022-02-10 02:46:49,031 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:46:49,031 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:46:49,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:46:49,032 INFO L229 MonitoredProcess]: Starting monitored process 97 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:46:49,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Waiting until timeout for monitored process [2022-02-10 02:46:49,052 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-02-10 02:46:49,052 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:46:49,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 23 conjunts are in the unsatisfiable core [2022-02-10 02:46:49,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:46:49,256 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 02:46:49,256 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:46:49,362 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 02:46:49,362 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1721272922] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:46:49,362 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:46:49,362 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 6 [2022-02-10 02:46:49,362 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143077522] [2022-02-10 02:46:49,363 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:46:49,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-10 02:46:49,363 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:46:49,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-10 02:46:49,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-02-10 02:46:49,363 INFO L87 Difference]: Start difference. First operand 51535 states and 87122 transitions. Second operand has 8 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:49,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:46:49,587 INFO L93 Difference]: Finished difference Result 53318 states and 89949 transitions. [2022-02-10 02:46:49,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-10 02:46:49,587 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2022-02-10 02:46:49,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:46:49,691 INFO L225 Difference]: With dead ends: 53318 [2022-02-10 02:46:49,692 INFO L226 Difference]: Without dead ends: 53300 [2022-02-10 02:46:49,692 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 84 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-02-10 02:46:49,692 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 38 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 323 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:46:49,692 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 323 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:46:49,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53300 states. [2022-02-10 02:46:50,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53300 to 53087. [2022-02-10 02:46:50,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53087 states, 53086 states have (on average 1.6895414987002222) internal successors, (89691), 53086 states have internal predecessors, (89691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:50,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53087 states to 53087 states and 89691 transitions. [2022-02-10 02:46:50,999 INFO L78 Accepts]: Start accepts. Automaton has 53087 states and 89691 transitions. Word has length 42 [2022-02-10 02:46:50,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:46:50,999 INFO L470 AbstractCegarLoop]: Abstraction has 53087 states and 89691 transitions. [2022-02-10 02:46:50,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:50,999 INFO L276 IsEmpty]: Start isEmpty. Operand 53087 states and 89691 transitions. [2022-02-10 02:46:51,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-02-10 02:46:51,047 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:46:51,047 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:46:51,063 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Ended with exit code 0 [2022-02-10 02:46:51,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable100 [2022-02-10 02:46:51,247 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:46:51,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:46:51,248 INFO L85 PathProgramCache]: Analyzing trace with hash -237215026, now seen corresponding path program 97 times [2022-02-10 02:46:51,248 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:46:51,248 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673785967] [2022-02-10 02:46:51,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:46:51,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:46:51,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:46:51,317 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 35 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:46:51,318 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:46:51,318 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673785967] [2022-02-10 02:46:51,318 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673785967] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:46:51,318 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1617171554] [2022-02-10 02:46:51,318 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:46:51,318 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:46:51,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:46:51,319 INFO L229 MonitoredProcess]: Starting monitored process 98 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:46:51,320 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Waiting until timeout for monitored process [2022-02-10 02:46:51,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:46:51,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 02:46:51,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:46:51,475 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 35 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:46:51,475 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:46:51,543 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 35 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:46:51,544 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1617171554] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:46:51,544 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:46:51,544 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 21 [2022-02-10 02:46:51,544 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902982331] [2022-02-10 02:46:51,544 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:46:51,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-10 02:46:51,544 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:46:51,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-10 02:46:51,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2022-02-10 02:46:51,545 INFO L87 Difference]: Start difference. First operand 53087 states and 89691 transitions. Second operand has 21 states, 21 states have (on average 2.9523809523809526) internal successors, (62), 21 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:52,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:46:52,155 INFO L93 Difference]: Finished difference Result 63574 states and 107262 transitions. [2022-02-10 02:46:52,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-02-10 02:46:52,156 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.9523809523809526) internal successors, (62), 21 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2022-02-10 02:46:52,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:46:52,303 INFO L225 Difference]: With dead ends: 63574 [2022-02-10 02:46:52,304 INFO L226 Difference]: Without dead ends: 63574 [2022-02-10 02:46:52,304 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 82 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=350, Invalid=840, Unknown=0, NotChecked=0, Total=1190 [2022-02-10 02:46:52,304 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 160 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:46:52,304 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [160 Valid, 200 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:46:52,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63574 states. [2022-02-10 02:46:53,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63574 to 53562. [2022-02-10 02:46:53,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53562 states, 53561 states have (on average 1.6893448591325777) internal successors, (90483), 53561 states have internal predecessors, (90483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:53,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53562 states to 53562 states and 90483 transitions. [2022-02-10 02:46:53,674 INFO L78 Accepts]: Start accepts. Automaton has 53562 states and 90483 transitions. Word has length 45 [2022-02-10 02:46:53,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:46:53,674 INFO L470 AbstractCegarLoop]: Abstraction has 53562 states and 90483 transitions. [2022-02-10 02:46:53,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.9523809523809526) internal successors, (62), 21 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:53,675 INFO L276 IsEmpty]: Start isEmpty. Operand 53562 states and 90483 transitions. [2022-02-10 02:46:53,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-02-10 02:46:53,716 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:46:53,716 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:46:53,732 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Forceful destruction successful, exit code 0 [2022-02-10 02:46:53,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101,98 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:46:53,919 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:46:53,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:46:53,920 INFO L85 PathProgramCache]: Analyzing trace with hash -965148494, now seen corresponding path program 98 times [2022-02-10 02:46:53,920 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:46:53,920 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487665739] [2022-02-10 02:46:53,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:46:53,920 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:46:53,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:46:53,997 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 51 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:46:53,997 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:46:53,997 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487665739] [2022-02-10 02:46:53,997 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487665739] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:46:53,997 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [456660317] [2022-02-10 02:46:53,997 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:46:53,997 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:46:53,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:46:53,999 INFO L229 MonitoredProcess]: Starting monitored process 99 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:46:53,999 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Waiting until timeout for monitored process [2022-02-10 02:46:54,019 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:46:54,020 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:46:54,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 02:46:54,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:46:54,192 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 51 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:46:54,192 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:46:54,257 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 51 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:46:54,257 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [456660317] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:46:54,258 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:46:54,258 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 21 [2022-02-10 02:46:54,258 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951401704] [2022-02-10 02:46:54,258 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:46:54,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-10 02:46:54,258 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:46:54,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-10 02:46:54,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2022-02-10 02:46:54,265 INFO L87 Difference]: Start difference. First operand 53562 states and 90483 transitions. Second operand has 21 states, 21 states have (on average 2.9523809523809526) internal successors, (62), 21 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:54,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:46:54,753 INFO L93 Difference]: Finished difference Result 62234 states and 103553 transitions. [2022-02-10 02:46:54,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-10 02:46:54,754 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.9523809523809526) internal successors, (62), 21 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2022-02-10 02:46:54,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:46:54,869 INFO L225 Difference]: With dead ends: 62234 [2022-02-10 02:46:54,869 INFO L226 Difference]: Without dead ends: 62216 [2022-02-10 02:46:54,869 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 83 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=300, Invalid=890, Unknown=0, NotChecked=0, Total=1190 [2022-02-10 02:46:54,869 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 142 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:46:54,869 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [142 Valid, 144 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:46:54,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62216 states. [2022-02-10 02:46:55,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62216 to 53562. [2022-02-10 02:46:56,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53562 states, 53561 states have (on average 1.689326188831426) internal successors, (90482), 53561 states have internal predecessors, (90482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:56,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53562 states to 53562 states and 90482 transitions. [2022-02-10 02:46:56,140 INFO L78 Accepts]: Start accepts. Automaton has 53562 states and 90482 transitions. Word has length 45 [2022-02-10 02:46:56,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:46:56,141 INFO L470 AbstractCegarLoop]: Abstraction has 53562 states and 90482 transitions. [2022-02-10 02:46:56,141 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.9523809523809526) internal successors, (62), 21 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:56,141 INFO L276 IsEmpty]: Start isEmpty. Operand 53562 states and 90482 transitions. [2022-02-10 02:46:56,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-02-10 02:46:56,361 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:46:56,361 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:46:56,383 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Ended with exit code 0 [2022-02-10 02:46:56,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 99 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2022-02-10 02:46:56,562 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:46:56,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:46:56,562 INFO L85 PathProgramCache]: Analyzing trace with hash 54785456, now seen corresponding path program 99 times [2022-02-10 02:46:56,562 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:46:56,562 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990800844] [2022-02-10 02:46:56,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:46:56,562 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:46:56,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:46:56,635 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 30 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:46:56,635 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:46:56,636 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990800844] [2022-02-10 02:46:56,636 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990800844] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:46:56,636 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1113781262] [2022-02-10 02:46:56,636 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:46:56,636 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:46:56,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:46:56,637 INFO L229 MonitoredProcess]: Starting monitored process 100 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:46:56,637 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Waiting until timeout for monitored process [2022-02-10 02:46:56,662 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-02-10 02:46:56,662 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:46:56,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 02:46:56,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:46:56,818 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 35 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:46:56,818 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:46:56,901 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 30 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:46:56,902 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1113781262] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:46:56,902 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:46:56,902 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 22 [2022-02-10 02:46:56,902 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067350627] [2022-02-10 02:46:56,902 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:46:56,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-10 02:46:56,902 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:46:56,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-10 02:46:56,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2022-02-10 02:46:56,903 INFO L87 Difference]: Start difference. First operand 53562 states and 90482 transitions. Second operand has 22 states, 22 states have (on average 3.0454545454545454) internal successors, (67), 22 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:57,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:46:57,530 INFO L93 Difference]: Finished difference Result 64397 states and 108138 transitions. [2022-02-10 02:46:57,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-02-10 02:46:57,531 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.0454545454545454) internal successors, (67), 22 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2022-02-10 02:46:57,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:46:57,822 INFO L225 Difference]: With dead ends: 64397 [2022-02-10 02:46:57,822 INFO L226 Difference]: Without dead ends: 64397 [2022-02-10 02:46:57,823 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 82 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 353 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=546, Invalid=1176, Unknown=0, NotChecked=0, Total=1722 [2022-02-10 02:46:57,823 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 151 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:46:57,823 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [151 Valid, 313 Invalid, 532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 490 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:46:57,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64397 states. [2022-02-10 02:46:58,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64397 to 54049. [2022-02-10 02:46:58,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54049 states, 54048 states have (on average 1.6895352279455298) internal successors, (91316), 54048 states have internal predecessors, (91316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:58,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54049 states to 54049 states and 91316 transitions. [2022-02-10 02:46:58,914 INFO L78 Accepts]: Start accepts. Automaton has 54049 states and 91316 transitions. Word has length 45 [2022-02-10 02:46:58,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:46:58,915 INFO L470 AbstractCegarLoop]: Abstraction has 54049 states and 91316 transitions. [2022-02-10 02:46:58,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.0454545454545454) internal successors, (67), 22 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:58,915 INFO L276 IsEmpty]: Start isEmpty. Operand 54049 states and 91316 transitions. [2022-02-10 02:46:59,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-02-10 02:46:59,128 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:46:59,128 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:46:59,148 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Forceful destruction successful, exit code 0 [2022-02-10 02:46:59,342 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 100 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2022-02-10 02:46:59,342 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:46:59,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:46:59,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1949029134, now seen corresponding path program 100 times [2022-02-10 02:46:59,342 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:46:59,342 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243724640] [2022-02-10 02:46:59,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:46:59,343 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:46:59,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:46:59,408 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 46 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:46:59,408 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:46:59,408 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243724640] [2022-02-10 02:46:59,408 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243724640] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:46:59,408 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [40564949] [2022-02-10 02:46:59,408 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:46:59,409 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:46:59,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:46:59,410 INFO L229 MonitoredProcess]: Starting monitored process 101 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:46:59,410 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Waiting until timeout for monitored process [2022-02-10 02:46:59,430 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:46:59,430 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:46:59,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 02:46:59,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:46:59,574 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 46 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:46:59,574 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:46:59,636 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 46 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:46:59,636 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [40564949] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:46:59,636 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:46:59,636 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 22 [2022-02-10 02:46:59,637 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033149571] [2022-02-10 02:46:59,637 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:46:59,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-10 02:46:59,637 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:46:59,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-10 02:46:59,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=353, Unknown=0, NotChecked=0, Total=462 [2022-02-10 02:46:59,637 INFO L87 Difference]: Start difference. First operand 54049 states and 91316 transitions. Second operand has 22 states, 22 states have (on average 2.909090909090909) internal successors, (64), 22 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:47:00,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:47:00,127 INFO L93 Difference]: Finished difference Result 62778 states and 104443 transitions. [2022-02-10 02:47:00,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-02-10 02:47:00,127 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.909090909090909) internal successors, (64), 22 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2022-02-10 02:47:00,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:47:00,245 INFO L225 Difference]: With dead ends: 62778 [2022-02-10 02:47:00,245 INFO L226 Difference]: Without dead ends: 62761 [2022-02-10 02:47:00,245 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 82 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 434 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=484, Invalid=1496, Unknown=0, NotChecked=0, Total=1980 [2022-02-10 02:47:00,245 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 275 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:47:00,246 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [275 Valid, 143 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:47:00,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62761 states. [2022-02-10 02:47:01,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62761 to 56620. [2022-02-10 02:47:01,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56620 states, 56619 states have (on average 1.691552305763083) internal successors, (95774), 56619 states have internal predecessors, (95774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:47:01,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56620 states to 56620 states and 95774 transitions. [2022-02-10 02:47:01,571 INFO L78 Accepts]: Start accepts. Automaton has 56620 states and 95774 transitions. Word has length 45 [2022-02-10 02:47:01,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:47:01,572 INFO L470 AbstractCegarLoop]: Abstraction has 56620 states and 95774 transitions. [2022-02-10 02:47:01,572 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.909090909090909) internal successors, (64), 22 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:47:01,572 INFO L276 IsEmpty]: Start isEmpty. Operand 56620 states and 95774 transitions. [2022-02-10 02:47:01,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-02-10 02:47:01,635 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:47:01,635 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:47:01,666 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Ended with exit code 0 [2022-02-10 02:47:01,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104,101 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:47:01,859 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:47:01,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:47:01,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1004915696, now seen corresponding path program 101 times [2022-02-10 02:47:01,860 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:47:01,860 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070262690] [2022-02-10 02:47:01,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:47:01,860 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:47:01,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:47:01,933 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 30 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:47:01,933 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:47:01,933 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070262690] [2022-02-10 02:47:01,934 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070262690] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:47:01,934 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2077489628] [2022-02-10 02:47:01,934 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:47:01,934 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:47:01,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:47:01,935 INFO L229 MonitoredProcess]: Starting monitored process 102 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:47:02,123 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Waiting until timeout for monitored process [2022-02-10 02:47:02,134 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-02-10 02:47:02,135 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:47:02,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 02:47:02,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:47:02,280 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 35 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:47:02,280 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:47:02,342 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 30 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:47:02,342 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2077489628] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:47:02,342 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:47:02,342 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 22 [2022-02-10 02:47:02,343 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930724710] [2022-02-10 02:47:02,343 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:47:02,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-10 02:47:02,343 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:47:02,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-10 02:47:02,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=354, Unknown=0, NotChecked=0, Total=462 [2022-02-10 02:47:02,343 INFO L87 Difference]: Start difference. First operand 56620 states and 95774 transitions. Second operand has 22 states, 22 states have (on average 3.0454545454545454) internal successors, (67), 22 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:47:03,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:47:03,503 INFO L93 Difference]: Finished difference Result 72814 states and 122610 transitions. [2022-02-10 02:47:03,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-02-10 02:47:03,504 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.0454545454545454) internal successors, (67), 22 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2022-02-10 02:47:03,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:47:03,788 INFO L225 Difference]: With dead ends: 72814 [2022-02-10 02:47:03,788 INFO L226 Difference]: Without dead ends: 72814 [2022-02-10 02:47:03,789 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 82 SyntacticMatches, 1 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1632 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=2009, Invalid=4311, Unknown=0, NotChecked=0, Total=6320 [2022-02-10 02:47:03,789 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 175 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 597 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:47:03,789 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [175 Valid, 347 Invalid, 647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 597 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:47:03,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72814 states. [2022-02-10 02:47:04,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72814 to 57708. [2022-02-10 02:47:04,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57708 states, 57707 states have (on average 1.6914932330566483) internal successors, (97611), 57707 states have internal predecessors, (97611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:47:04,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57708 states to 57708 states and 97611 transitions. [2022-02-10 02:47:04,997 INFO L78 Accepts]: Start accepts. Automaton has 57708 states and 97611 transitions. Word has length 45 [2022-02-10 02:47:04,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:47:04,997 INFO L470 AbstractCegarLoop]: Abstraction has 57708 states and 97611 transitions. [2022-02-10 02:47:04,997 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.0454545454545454) internal successors, (67), 22 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:47:04,997 INFO L276 IsEmpty]: Start isEmpty. Operand 57708 states and 97611 transitions. [2022-02-10 02:47:05,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-02-10 02:47:05,050 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:47:05,050 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:47:05,066 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Ended with exit code 0 [2022-02-10 02:47:05,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105,102 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:47:05,251 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:47:05,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:47:05,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1105767406, now seen corresponding path program 102 times [2022-02-10 02:47:05,252 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:47:05,252 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481367666] [2022-02-10 02:47:05,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:47:05,252 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:47:05,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:47:05,318 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 35 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:47:05,319 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:47:05,319 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481367666] [2022-02-10 02:47:05,319 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481367666] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:47:05,319 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2062115083] [2022-02-10 02:47:05,319 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:47:05,319 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:47:05,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:47:05,320 INFO L229 MonitoredProcess]: Starting monitored process 103 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:47:05,321 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Waiting until timeout for monitored process [2022-02-10 02:47:05,341 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-02-10 02:47:05,342 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:47:05,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 02:47:05,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:47:05,665 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 35 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:47:05,665 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:47:05,726 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 35 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:47:05,726 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2062115083] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:47:05,726 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:47:05,726 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 22 [2022-02-10 02:47:05,726 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998286728] [2022-02-10 02:47:05,726 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:47:05,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-10 02:47:05,727 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:47:05,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-10 02:47:05,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=364, Unknown=0, NotChecked=0, Total=462 [2022-02-10 02:47:05,727 INFO L87 Difference]: Start difference. First operand 57708 states and 97611 transitions. Second operand has 22 states, 22 states have (on average 2.909090909090909) internal successors, (64), 22 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:47:06,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:47:06,411 INFO L93 Difference]: Finished difference Result 84159 states and 139833 transitions. [2022-02-10 02:47:06,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-02-10 02:47:06,412 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.909090909090909) internal successors, (64), 22 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2022-02-10 02:47:06,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:47:06,661 INFO L225 Difference]: With dead ends: 84159 [2022-02-10 02:47:06,661 INFO L226 Difference]: Without dead ends: 84132 [2022-02-10 02:47:06,661 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 82 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 712 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=648, Invalid=2108, Unknown=0, NotChecked=0, Total=2756 [2022-02-10 02:47:06,663 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 276 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:47:06,663 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [276 Valid, 226 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 375 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:47:06,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84132 states. [2022-02-10 02:47:08,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84132 to 66145. [2022-02-10 02:47:08,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66145 states, 66144 states have (on average 1.7039338413159169) internal successors, (112705), 66144 states have internal predecessors, (112705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:47:08,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66145 states to 66145 states and 112705 transitions. [2022-02-10 02:47:08,566 INFO L78 Accepts]: Start accepts. Automaton has 66145 states and 112705 transitions. Word has length 45 [2022-02-10 02:47:08,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:47:08,566 INFO L470 AbstractCegarLoop]: Abstraction has 66145 states and 112705 transitions. [2022-02-10 02:47:08,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.909090909090909) internal successors, (64), 22 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:47:08,566 INFO L276 IsEmpty]: Start isEmpty. Operand 66145 states and 112705 transitions. [2022-02-10 02:47:08,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-02-10 02:47:08,621 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:47:08,621 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:47:08,637 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Ended with exit code 0 [2022-02-10 02:47:08,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 103 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable106 [2022-02-10 02:47:08,822 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:47:08,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:47:08,823 INFO L85 PathProgramCache]: Analyzing trace with hash 255696304, now seen corresponding path program 103 times [2022-02-10 02:47:08,823 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:47:08,823 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120072439] [2022-02-10 02:47:08,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:47:08,823 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:47:08,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:47:08,901 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 30 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:47:08,902 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:47:08,902 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120072439] [2022-02-10 02:47:08,902 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120072439] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:47:08,902 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [321066876] [2022-02-10 02:47:08,902 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:47:08,902 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:47:08,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:47:08,912 INFO L229 MonitoredProcess]: Starting monitored process 104 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:47:08,913 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Waiting until timeout for monitored process [2022-02-10 02:47:08,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:47:08,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 02:47:08,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:47:09,122 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 35 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:47:09,123 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:47:09,190 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 30 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:47:09,190 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [321066876] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:47:09,190 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:47:09,190 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 22 [2022-02-10 02:47:09,190 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898367132] [2022-02-10 02:47:09,191 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:47:09,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-10 02:47:09,191 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:47:09,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-10 02:47:09,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=354, Unknown=0, NotChecked=0, Total=462 [2022-02-10 02:47:09,191 INFO L87 Difference]: Start difference. First operand 66145 states and 112705 transitions. Second operand has 22 states, 22 states have (on average 3.0454545454545454) internal successors, (67), 22 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:47:10,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:47:10,862 INFO L93 Difference]: Finished difference Result 84554 states and 142704 transitions. [2022-02-10 02:47:10,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2022-02-10 02:47:10,862 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.0454545454545454) internal successors, (67), 22 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2022-02-10 02:47:10,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:47:11,044 INFO L225 Difference]: With dead ends: 84554 [2022-02-10 02:47:11,044 INFO L226 Difference]: Without dead ends: 84554 [2022-02-10 02:47:11,045 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 82 SyntacticMatches, 1 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2665 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2865, Invalid=6641, Unknown=0, NotChecked=0, Total=9506 [2022-02-10 02:47:11,045 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 150 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 831 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 831 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:47:11,045 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [150 Valid, 460 Invalid, 879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 831 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:47:11,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84554 states. [2022-02-10 02:47:12,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84554 to 67282. [2022-02-10 02:47:12,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67282 states, 67281 states have (on average 1.704344465748131) internal successors, (114670), 67281 states have internal predecessors, (114670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:47:12,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67282 states to 67282 states and 114670 transitions. [2022-02-10 02:47:12,661 INFO L78 Accepts]: Start accepts. Automaton has 67282 states and 114670 transitions. Word has length 45 [2022-02-10 02:47:12,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:47:12,661 INFO L470 AbstractCegarLoop]: Abstraction has 67282 states and 114670 transitions. [2022-02-10 02:47:12,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.0454545454545454) internal successors, (67), 22 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:47:12,661 INFO L276 IsEmpty]: Start isEmpty. Operand 67282 states and 114670 transitions. [2022-02-10 02:47:12,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-02-10 02:47:12,734 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:47:12,734 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:47:12,759 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Forceful destruction successful, exit code 0 [2022-02-10 02:47:12,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107,104 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:47:12,935 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:47:12,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:47:12,936 INFO L85 PathProgramCache]: Analyzing trace with hash 2031152754, now seen corresponding path program 104 times [2022-02-10 02:47:12,936 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:47:12,936 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959294200] [2022-02-10 02:47:12,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:47:12,936 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:47:12,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:47:13,013 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 30 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:47:13,013 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:47:13,013 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959294200] [2022-02-10 02:47:13,013 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959294200] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:47:13,013 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [906406137] [2022-02-10 02:47:13,013 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:47:13,013 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:47:13,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:47:13,014 INFO L229 MonitoredProcess]: Starting monitored process 105 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:47:13,015 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Waiting until timeout for monitored process [2022-02-10 02:47:13,036 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:47:13,037 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:47:13,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 02:47:13,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:47:13,209 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 30 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:47:13,209 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:47:13,276 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 30 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:47:13,276 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [906406137] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:47:13,276 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:47:13,276 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 22 [2022-02-10 02:47:13,277 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090933439] [2022-02-10 02:47:13,277 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:47:13,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-10 02:47:13,277 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:47:13,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-10 02:47:13,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2022-02-10 02:47:13,277 INFO L87 Difference]: Start difference. First operand 67282 states and 114670 transitions. Second operand has 22 states, 22 states have (on average 2.909090909090909) internal successors, (64), 22 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:47:14,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:47:14,315 INFO L93 Difference]: Finished difference Result 96049 states and 160843 transitions. [2022-02-10 02:47:14,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-02-10 02:47:14,315 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.909090909090909) internal successors, (64), 22 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2022-02-10 02:47:14,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:47:14,514 INFO L225 Difference]: With dead ends: 96049 [2022-02-10 02:47:14,514 INFO L226 Difference]: Without dead ends: 96018 [2022-02-10 02:47:14,514 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 82 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 790 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=709, Invalid=2261, Unknown=0, NotChecked=0, Total=2970 [2022-02-10 02:47:14,514 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 215 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 434 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:47:14,515 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [215 Valid, 262 Invalid, 498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 434 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:47:14,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96018 states. [2022-02-10 02:47:16,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96018 to 73238. [2022-02-10 02:47:16,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73238 states, 73237 states have (on average 1.7022816336005024) internal successors, (124670), 73237 states have internal predecessors, (124670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:47:16,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73238 states to 73238 states and 124670 transitions. [2022-02-10 02:47:16,449 INFO L78 Accepts]: Start accepts. Automaton has 73238 states and 124670 transitions. Word has length 45 [2022-02-10 02:47:16,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:47:16,449 INFO L470 AbstractCegarLoop]: Abstraction has 73238 states and 124670 transitions. [2022-02-10 02:47:16,449 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.909090909090909) internal successors, (64), 22 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:47:16,449 INFO L276 IsEmpty]: Start isEmpty. Operand 73238 states and 124670 transitions. [2022-02-10 02:47:16,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-02-10 02:47:16,723 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:47:16,723 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:47:16,770 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Forceful destruction successful, exit code 0 [2022-02-10 02:47:16,939 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108,105 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:47:16,939 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:47:16,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:47:16,940 INFO L85 PathProgramCache]: Analyzing trace with hash -2104679440, now seen corresponding path program 105 times [2022-02-10 02:47:16,940 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:47:16,940 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603943429] [2022-02-10 02:47:16,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:47:16,940 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:47:16,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:47:17,007 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 30 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:47:17,008 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:47:17,008 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603943429] [2022-02-10 02:47:17,008 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603943429] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:47:17,008 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612779168] [2022-02-10 02:47:17,008 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:47:17,008 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:47:17,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:47:17,009 INFO L229 MonitoredProcess]: Starting monitored process 106 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:47:17,010 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Waiting until timeout for monitored process [2022-02-10 02:47:17,032 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-02-10 02:47:17,032 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:47:17,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 02:47:17,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:47:17,210 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 35 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:47:17,210 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:47:17,287 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 30 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:47:17,287 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1612779168] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:47:17,287 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:47:17,287 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 22 [2022-02-10 02:47:17,287 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390628791] [2022-02-10 02:47:17,287 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:47:17,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-10 02:47:17,287 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:47:17,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-10 02:47:17,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2022-02-10 02:47:17,288 INFO L87 Difference]: Start difference. First operand 73238 states and 124670 transitions. Second operand has 22 states, 22 states have (on average 3.0454545454545454) internal successors, (67), 22 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:47:19,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:47:19,156 INFO L93 Difference]: Finished difference Result 90966 states and 153410 transitions. [2022-02-10 02:47:19,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2022-02-10 02:47:19,156 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.0454545454545454) internal successors, (67), 22 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2022-02-10 02:47:19,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:47:19,383 INFO L225 Difference]: With dead ends: 90966 [2022-02-10 02:47:19,384 INFO L226 Difference]: Without dead ends: 90966 [2022-02-10 02:47:19,384 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 82 SyntacticMatches, 1 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3443 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=3491, Invalid=8281, Unknown=0, NotChecked=0, Total=11772 [2022-02-10 02:47:19,384 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 211 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 803 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 803 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:47:19,384 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [211 Valid, 429 Invalid, 870 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 803 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:47:19,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90966 states. [2022-02-10 02:47:20,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90966 to 74160. [2022-02-10 02:47:20,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74160 states, 74159 states have (on average 1.7032052751520381) internal successors, (126308), 74159 states have internal predecessors, (126308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:47:21,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74160 states to 74160 states and 126308 transitions. [2022-02-10 02:47:21,267 INFO L78 Accepts]: Start accepts. Automaton has 74160 states and 126308 transitions. Word has length 45 [2022-02-10 02:47:21,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:47:21,267 INFO L470 AbstractCegarLoop]: Abstraction has 74160 states and 126308 transitions. [2022-02-10 02:47:21,267 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.0454545454545454) internal successors, (67), 22 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:47:21,267 INFO L276 IsEmpty]: Start isEmpty. Operand 74160 states and 126308 transitions. [2022-02-10 02:47:21,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-02-10 02:47:21,338 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:47:21,338 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:47:21,356 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Forceful destruction successful, exit code 0 [2022-02-10 02:47:21,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 106 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable109 [2022-02-10 02:47:21,556 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:47:21,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:47:21,557 INFO L85 PathProgramCache]: Analyzing trace with hash 2084526702, now seen corresponding path program 106 times [2022-02-10 02:47:21,557 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:47:21,557 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955880267] [2022-02-10 02:47:21,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:47:21,557 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:47:21,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:47:21,648 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 31 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:47:21,649 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:47:21,649 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955880267] [2022-02-10 02:47:21,649 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955880267] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:47:21,649 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1953515279] [2022-02-10 02:47:21,649 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:47:21,649 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:47:21,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:47:21,650 INFO L229 MonitoredProcess]: Starting monitored process 107 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:47:21,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Waiting until timeout for monitored process [2022-02-10 02:47:21,671 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:47:21,671 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:47:21,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 02:47:21,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:47:21,818 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 31 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:47:21,818 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:47:21,879 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 31 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:47:21,879 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1953515279] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:47:21,879 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:47:21,879 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 22 [2022-02-10 02:47:21,879 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202970692] [2022-02-10 02:47:21,879 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:47:21,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-10 02:47:21,879 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:47:21,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-10 02:47:21,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=368, Unknown=0, NotChecked=0, Total=462 [2022-02-10 02:47:21,880 INFO L87 Difference]: Start difference. First operand 74160 states and 126308 transitions. Second operand has 22 states, 22 states have (on average 2.909090909090909) internal successors, (64), 22 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:47:22,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:47:22,917 INFO L93 Difference]: Finished difference Result 95007 states and 159308 transitions. [2022-02-10 02:47:22,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-02-10 02:47:22,918 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.909090909090909) internal successors, (64), 22 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2022-02-10 02:47:22,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:47:23,136 INFO L225 Difference]: With dead ends: 95007 [2022-02-10 02:47:23,136 INFO L226 Difference]: Without dead ends: 94985 [2022-02-10 02:47:23,136 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 82 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 894 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=825, Invalid=2481, Unknown=0, NotChecked=0, Total=3306 [2022-02-10 02:47:23,137 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 356 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:47:23,137 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [356 Valid, 227 Invalid, 508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 383 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:47:23,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94985 states. [2022-02-10 02:47:24,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94985 to 77273. [2022-02-10 02:47:24,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77273 states, 77272 states have (on average 1.6999948234806916) internal successors, (131362), 77272 states have internal predecessors, (131362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:47:25,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77273 states to 77273 states and 131362 transitions. [2022-02-10 02:47:25,171 INFO L78 Accepts]: Start accepts. Automaton has 77273 states and 131362 transitions. Word has length 45 [2022-02-10 02:47:25,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:47:25,171 INFO L470 AbstractCegarLoop]: Abstraction has 77273 states and 131362 transitions. [2022-02-10 02:47:25,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.909090909090909) internal successors, (64), 22 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:47:25,171 INFO L276 IsEmpty]: Start isEmpty. Operand 77273 states and 131362 transitions. [2022-02-10 02:47:25,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-02-10 02:47:25,241 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:47:25,241 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:47:25,262 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Ended with exit code 0 [2022-02-10 02:47:25,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110,107 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:47:25,442 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:47:25,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:47:25,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1637172656, now seen corresponding path program 107 times [2022-02-10 02:47:25,443 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:47:25,443 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826091593] [2022-02-10 02:47:25,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:47:25,443 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:47:25,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:47:25,511 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 30 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:47:25,512 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:47:25,512 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826091593] [2022-02-10 02:47:25,512 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826091593] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:47:25,512 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1613771697] [2022-02-10 02:47:25,512 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:47:25,512 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:47:25,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:47:25,513 INFO L229 MonitoredProcess]: Starting monitored process 108 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:47:25,514 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Waiting until timeout for monitored process [2022-02-10 02:47:25,535 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-02-10 02:47:25,536 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:47:25,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 02:47:25,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:47:25,696 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 35 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:47:25,696 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:47:25,763 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 30 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:47:25,763 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1613771697] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:47:25,763 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:47:25,763 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 22 [2022-02-10 02:47:25,763 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323766491] [2022-02-10 02:47:25,763 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:47:25,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-10 02:47:25,764 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:47:25,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-10 02:47:25,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=336, Unknown=0, NotChecked=0, Total=462 [2022-02-10 02:47:25,764 INFO L87 Difference]: Start difference. First operand 77273 states and 131362 transitions. Second operand has 22 states, 22 states have (on average 3.0454545454545454) internal successors, (67), 22 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:47:27,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:47:27,600 INFO L93 Difference]: Finished difference Result 95463 states and 161301 transitions. [2022-02-10 02:47:27,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2022-02-10 02:47:27,601 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.0454545454545454) internal successors, (67), 22 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2022-02-10 02:47:27,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:47:27,837 INFO L225 Difference]: With dead ends: 95463 [2022-02-10 02:47:27,837 INFO L226 Difference]: Without dead ends: 95463 [2022-02-10 02:47:27,839 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 82 SyntacticMatches, 1 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3556 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=3679, Invalid=8311, Unknown=0, NotChecked=0, Total=11990 [2022-02-10 02:47:27,839 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 212 mSDsluCounter, 517 mSDsCounter, 0 mSdLazyCounter, 810 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 810 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:47:27,839 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [212 Valid, 479 Invalid, 876 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 810 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:47:28,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95463 states. [2022-02-10 02:47:29,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95463 to 77648. [2022-02-10 02:47:29,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77648 states, 77647 states have (on average 1.7012505312504025) internal successors, (132097), 77647 states have internal predecessors, (132097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:47:29,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77648 states to 77648 states and 132097 transitions. [2022-02-10 02:47:29,720 INFO L78 Accepts]: Start accepts. Automaton has 77648 states and 132097 transitions. Word has length 45 [2022-02-10 02:47:29,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:47:29,720 INFO L470 AbstractCegarLoop]: Abstraction has 77648 states and 132097 transitions. [2022-02-10 02:47:29,720 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.0454545454545454) internal successors, (67), 22 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:47:29,720 INFO L276 IsEmpty]: Start isEmpty. Operand 77648 states and 132097 transitions. [2022-02-10 02:47:30,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-02-10 02:47:30,022 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:47:30,022 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:47:30,038 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Forceful destruction successful, exit code 0 [2022-02-10 02:47:30,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 108 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable111 [2022-02-10 02:47:30,235 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:47:30,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:47:30,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1029492722, now seen corresponding path program 108 times [2022-02-10 02:47:30,235 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:47:30,236 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958925481] [2022-02-10 02:47:30,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:47:30,236 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:47:30,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:47:30,299 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 38 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:47:30,299 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:47:30,299 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958925481] [2022-02-10 02:47:30,299 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958925481] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:47:30,299 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1520099027] [2022-02-10 02:47:30,299 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:47:30,299 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:47:30,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:47:30,300 INFO L229 MonitoredProcess]: Starting monitored process 109 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:47:30,301 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Waiting until timeout for monitored process [2022-02-10 02:47:30,321 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-02-10 02:47:30,321 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:47:30,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 02:47:30,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:47:30,465 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 38 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:47:30,465 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:47:30,525 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 38 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:47:30,526 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1520099027] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:47:30,526 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:47:30,526 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 22 [2022-02-10 02:47:30,526 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714734929] [2022-02-10 02:47:30,526 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:47:30,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-10 02:47:30,526 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:47:30,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-10 02:47:30,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=361, Unknown=0, NotChecked=0, Total=462 [2022-02-10 02:47:30,527 INFO L87 Difference]: Start difference. First operand 77648 states and 132097 transitions. Second operand has 22 states, 22 states have (on average 2.909090909090909) internal successors, (64), 22 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:47:31,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:47:31,384 INFO L93 Difference]: Finished difference Result 90775 states and 152264 transitions. [2022-02-10 02:47:31,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-02-10 02:47:31,385 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.909090909090909) internal successors, (64), 22 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2022-02-10 02:47:31,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:47:31,622 INFO L225 Difference]: With dead ends: 90775 [2022-02-10 02:47:31,622 INFO L226 Difference]: Without dead ends: 90762 [2022-02-10 02:47:31,623 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 82 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 986 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=975, Invalid=2685, Unknown=0, NotChecked=0, Total=3660 [2022-02-10 02:47:31,623 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 308 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 458 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:47:31,623 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [308 Valid, 272 Invalid, 564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 458 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:47:32,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90762 states. [2022-02-10 02:47:33,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90762 to 78871. [2022-02-10 02:47:33,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78871 states, 78870 states have (on average 1.697502218841131) internal successors, (133882), 78870 states have internal predecessors, (133882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:47:33,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78871 states to 78871 states and 133882 transitions. [2022-02-10 02:47:33,640 INFO L78 Accepts]: Start accepts. Automaton has 78871 states and 133882 transitions. Word has length 45 [2022-02-10 02:47:33,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:47:33,640 INFO L470 AbstractCegarLoop]: Abstraction has 78871 states and 133882 transitions. [2022-02-10 02:47:33,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.909090909090909) internal successors, (64), 22 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:47:33,640 INFO L276 IsEmpty]: Start isEmpty. Operand 78871 states and 133882 transitions. [2022-02-10 02:47:33,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-02-10 02:47:33,970 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:47:33,971 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:47:33,989 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Forceful destruction successful, exit code 0 [2022-02-10 02:47:34,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112,109 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:47:34,185 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:47:34,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:47:34,185 INFO L85 PathProgramCache]: Analyzing trace with hash 786098414, now seen corresponding path program 109 times [2022-02-10 02:47:34,185 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:47:34,185 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699661489] [2022-02-10 02:47:34,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:47:34,185 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:47:34,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:47:34,255 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 51 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:47:34,255 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:47:34,255 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699661489] [2022-02-10 02:47:34,255 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699661489] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:47:34,255 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1581534207] [2022-02-10 02:47:34,255 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:47:34,255 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:47:34,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:47:34,257 INFO L229 MonitoredProcess]: Starting monitored process 110 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:47:34,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Waiting until timeout for monitored process [2022-02-10 02:47:34,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:47:34,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 02:47:34,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:47:34,431 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 51 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:47:34,431 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:47:34,492 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 51 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:47:34,493 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1581534207] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:47:34,493 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:47:34,493 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 22 [2022-02-10 02:47:34,493 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557653707] [2022-02-10 02:47:34,493 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:47:34,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-10 02:47:34,493 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:47:34,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-10 02:47:34,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=347, Unknown=0, NotChecked=0, Total=462 [2022-02-10 02:47:34,494 INFO L87 Difference]: Start difference. First operand 78871 states and 133882 transitions. Second operand has 22 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:47:35,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:47:35,935 INFO L93 Difference]: Finished difference Result 89776 states and 149632 transitions. [2022-02-10 02:47:35,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2022-02-10 02:47:35,936 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2022-02-10 02:47:35,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:47:36,480 INFO L225 Difference]: With dead ends: 89776 [2022-02-10 02:47:36,480 INFO L226 Difference]: Without dead ends: 89765 [2022-02-10 02:47:36,481 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 82 SyntacticMatches, 1 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3596 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=2722, Invalid=7378, Unknown=0, NotChecked=0, Total=10100 [2022-02-10 02:47:36,481 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 416 mSDsluCounter, 392 mSDsCounter, 0 mSdLazyCounter, 634 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 416 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:47:36,481 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [416 Valid, 366 Invalid, 771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 634 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:47:36,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89765 states. [2022-02-10 02:47:37,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89765 to 72283. [2022-02-10 02:47:37,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72283 states, 72282 states have (on average 1.6888298608228882) internal successors, (122072), 72282 states have internal predecessors, (122072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:47:38,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72283 states to 72283 states and 122072 transitions. [2022-02-10 02:47:38,138 INFO L78 Accepts]: Start accepts. Automaton has 72283 states and 122072 transitions. Word has length 45 [2022-02-10 02:47:38,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:47:38,138 INFO L470 AbstractCegarLoop]: Abstraction has 72283 states and 122072 transitions. [2022-02-10 02:47:38,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:47:38,139 INFO L276 IsEmpty]: Start isEmpty. Operand 72283 states and 122072 transitions. [2022-02-10 02:47:38,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-02-10 02:47:38,409 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:47:38,409 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:47:38,425 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Forceful destruction successful, exit code 0 [2022-02-10 02:47:38,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 110 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable113 [2022-02-10 02:47:38,623 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:47:38,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:47:38,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1137825166, now seen corresponding path program 110 times [2022-02-10 02:47:38,624 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:47:38,624 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780685307] [2022-02-10 02:47:38,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:47:38,624 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:47:38,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:47:38,696 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 46 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:47:38,696 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:47:38,696 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780685307] [2022-02-10 02:47:38,696 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780685307] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:47:38,696 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2042862280] [2022-02-10 02:47:38,696 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:47:38,696 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:47:38,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:47:38,697 INFO L229 MonitoredProcess]: Starting monitored process 111 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:47:38,698 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Waiting until timeout for monitored process [2022-02-10 02:47:38,718 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:47:38,719 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:47:38,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 02:47:38,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:47:38,858 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 51 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:47:38,859 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:47:38,923 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 46 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:47:38,924 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2042862280] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:47:38,924 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:47:38,924 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 22 [2022-02-10 02:47:38,924 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161914267] [2022-02-10 02:47:38,924 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:47:38,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-10 02:47:38,924 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:47:38,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-10 02:47:38,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=312, Unknown=0, NotChecked=0, Total=462 [2022-02-10 02:47:38,925 INFO L87 Difference]: Start difference. First operand 72283 states and 122072 transitions. Second operand has 22 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:47:40,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:47:40,144 INFO L93 Difference]: Finished difference Result 80880 states and 136242 transitions. [2022-02-10 02:47:40,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-02-10 02:47:40,144 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2022-02-10 02:47:40,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:47:40,354 INFO L225 Difference]: With dead ends: 80880 [2022-02-10 02:47:40,354 INFO L226 Difference]: Without dead ends: 80878 [2022-02-10 02:47:40,355 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 82 SyntacticMatches, 1 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1953 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=2587, Invalid=4895, Unknown=0, NotChecked=0, Total=7482 [2022-02-10 02:47:40,356 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 222 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 707 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:47:40,356 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [222 Valid, 386 Invalid, 756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 707 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:47:40,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80878 states. [2022-02-10 02:47:41,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80878 to 71093. [2022-02-10 02:47:41,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71093 states, 71092 states have (on average 1.6880661677825917) internal successors, (120008), 71092 states have internal predecessors, (120008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:47:42,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71093 states to 71093 states and 120008 transitions. [2022-02-10 02:47:42,103 INFO L78 Accepts]: Start accepts. Automaton has 71093 states and 120008 transitions. Word has length 45 [2022-02-10 02:47:42,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:47:42,103 INFO L470 AbstractCegarLoop]: Abstraction has 71093 states and 120008 transitions. [2022-02-10 02:47:42,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:47:42,103 INFO L276 IsEmpty]: Start isEmpty. Operand 71093 states and 120008 transitions. [2022-02-10 02:47:42,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-02-10 02:47:42,169 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:47:42,169 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:47:42,192 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Forceful destruction successful, exit code 0 [2022-02-10 02:47:42,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 111 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable114 [2022-02-10 02:47:42,370 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:47:42,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:47:42,371 INFO L85 PathProgramCache]: Analyzing trace with hash -571551388, now seen corresponding path program 111 times [2022-02-10 02:47:42,371 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:47:42,371 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821139623] [2022-02-10 02:47:42,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:47:42,371 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:47:42,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:47:42,442 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 22 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:47:42,443 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:47:42,443 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821139623] [2022-02-10 02:47:42,443 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821139623] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:47:42,443 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1394710786] [2022-02-10 02:47:42,443 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:47:42,443 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:47:42,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:47:42,444 INFO L229 MonitoredProcess]: Starting monitored process 112 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:47:42,445 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Waiting until timeout for monitored process [2022-02-10 02:47:42,470 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-02-10 02:47:42,470 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:47:42,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 02:47:42,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:47:42,634 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 35 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:47:42,635 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:47:42,698 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 22 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:47:42,699 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1394710786] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:47:42,699 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:47:42,699 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 23 [2022-02-10 02:47:42,699 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904390482] [2022-02-10 02:47:42,699 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:47:42,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-10 02:47:42,699 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:47:42,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-10 02:47:42,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=387, Unknown=0, NotChecked=0, Total=506 [2022-02-10 02:47:42,700 INFO L87 Difference]: Start difference. First operand 71093 states and 120008 transitions. Second operand has 23 states, 23 states have (on average 3.0) internal successors, (69), 23 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:47:43,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:47:43,963 INFO L93 Difference]: Finished difference Result 86212 states and 145268 transitions. [2022-02-10 02:47:43,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-02-10 02:47:43,963 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.0) internal successors, (69), 23 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2022-02-10 02:47:43,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:47:44,162 INFO L225 Difference]: With dead ends: 86212 [2022-02-10 02:47:44,162 INFO L226 Difference]: Without dead ends: 86167 [2022-02-10 02:47:44,163 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 81 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1248 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1553, Invalid=3417, Unknown=0, NotChecked=0, Total=4970 [2022-02-10 02:47:44,163 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 145 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 621 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 367 SdHoareTripleChecker+Invalid, 663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 621 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:47:44,163 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [145 Valid, 367 Invalid, 663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 621 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 02:47:44,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86167 states. [2022-02-10 02:47:45,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86167 to 71188. [2022-02-10 02:47:45,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71188 states, 71187 states have (on average 1.6877660246955202) internal successors, (120147), 71187 states have internal predecessors, (120147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:47:45,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71188 states to 71188 states and 120147 transitions. [2022-02-10 02:47:45,874 INFO L78 Accepts]: Start accepts. Automaton has 71188 states and 120147 transitions. Word has length 45 [2022-02-10 02:47:45,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:47:45,874 INFO L470 AbstractCegarLoop]: Abstraction has 71188 states and 120147 transitions. [2022-02-10 02:47:45,874 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.0) internal successors, (69), 23 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:47:45,874 INFO L276 IsEmpty]: Start isEmpty. Operand 71188 states and 120147 transitions. [2022-02-10 02:47:45,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-02-10 02:47:45,940 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:47:45,940 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:47:45,956 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Ended with exit code 0 [2022-02-10 02:47:46,140 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 112 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable115 [2022-02-10 02:47:46,141 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:47:46,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:47:46,141 INFO L85 PathProgramCache]: Analyzing trace with hash -48303880, now seen corresponding path program 112 times [2022-02-10 02:47:46,141 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:47:46,141 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402484887] [2022-02-10 02:47:46,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:47:46,141 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:47:46,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:47:46,202 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 22 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:47:46,202 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:47:46,202 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402484887] [2022-02-10 02:47:46,203 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402484887] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:47:46,203 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1672245947] [2022-02-10 02:47:46,203 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:47:46,203 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:47:46,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:47:46,204 INFO L229 MonitoredProcess]: Starting monitored process 113 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:47:46,204 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Waiting until timeout for monitored process [2022-02-10 02:47:46,227 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:47:46,228 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:47:46,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 02:47:46,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:47:46,383 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 35 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:47:46,383 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:47:46,449 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 22 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:47:46,449 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1672245947] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:47:46,449 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:47:46,450 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 14] total 22 [2022-02-10 02:47:46,450 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606876237] [2022-02-10 02:47:46,450 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:47:46,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-10 02:47:46,450 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:47:46,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-10 02:47:46,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=353, Unknown=0, NotChecked=0, Total=462 [2022-02-10 02:47:46,451 INFO L87 Difference]: Start difference. First operand 71188 states and 120147 transitions. Second operand has 22 states, 22 states have (on average 3.1363636363636362) internal successors, (69), 22 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:47:47,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:47:47,524 INFO L93 Difference]: Finished difference Result 87523 states and 147216 transitions. [2022-02-10 02:47:47,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-02-10 02:47:47,524 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.1363636363636362) internal successors, (69), 22 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2022-02-10 02:47:47,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:47:47,937 INFO L225 Difference]: With dead ends: 87523 [2022-02-10 02:47:47,937 INFO L226 Difference]: Without dead ends: 87493 [2022-02-10 02:47:47,937 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 82 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1303 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1542, Invalid=3570, Unknown=0, NotChecked=0, Total=5112 [2022-02-10 02:47:47,938 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 199 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 541 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:47:47,938 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [199 Valid, 300 Invalid, 592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 541 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:47:48,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87493 states. [2022-02-10 02:47:49,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87493 to 71300. [2022-02-10 02:47:49,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71300 states, 71299 states have (on average 1.6880741665381) internal successors, (120358), 71299 states have internal predecessors, (120358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:47:49,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71300 states to 71300 states and 120358 transitions. [2022-02-10 02:47:49,401 INFO L78 Accepts]: Start accepts. Automaton has 71300 states and 120358 transitions. Word has length 45 [2022-02-10 02:47:49,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:47:49,401 INFO L470 AbstractCegarLoop]: Abstraction has 71300 states and 120358 transitions. [2022-02-10 02:47:49,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.1363636363636362) internal successors, (69), 22 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:47:49,401 INFO L276 IsEmpty]: Start isEmpty. Operand 71300 states and 120358 transitions. [2022-02-10 02:47:49,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-02-10 02:47:49,456 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:47:49,456 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:47:49,480 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Ended with exit code 0 [2022-02-10 02:47:49,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 113 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable116 [2022-02-10 02:47:49,657 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:47:49,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:47:49,657 INFO L85 PathProgramCache]: Analyzing trace with hash 675879396, now seen corresponding path program 113 times [2022-02-10 02:47:49,657 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:47:49,657 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986361953] [2022-02-10 02:47:49,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:47:49,657 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:47:49,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:47:49,728 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 22 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:47:49,729 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:47:49,729 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986361953] [2022-02-10 02:47:49,729 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986361953] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:47:49,729 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41987640] [2022-02-10 02:47:49,729 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:47:49,729 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:47:49,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:47:49,731 INFO L229 MonitoredProcess]: Starting monitored process 114 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:47:49,733 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Waiting until timeout for monitored process [2022-02-10 02:47:49,757 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-02-10 02:47:49,758 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:47:49,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 02:47:49,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:47:49,940 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 35 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:47:49,940 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:47:50,015 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 22 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:47:50,015 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [41987640] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:47:50,015 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:47:50,016 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 14] total 22 [2022-02-10 02:47:50,016 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916741969] [2022-02-10 02:47:50,016 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:47:50,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-10 02:47:50,016 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:47:50,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-10 02:47:50,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=354, Unknown=0, NotChecked=0, Total=462 [2022-02-10 02:47:50,017 INFO L87 Difference]: Start difference. First operand 71300 states and 120358 transitions. Second operand has 22 states, 22 states have (on average 3.1363636363636362) internal successors, (69), 22 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:47:51,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:47:51,956 INFO L93 Difference]: Finished difference Result 88675 states and 148747 transitions. [2022-02-10 02:47:51,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-02-10 02:47:51,957 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.1363636363636362) internal successors, (69), 22 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2022-02-10 02:47:51,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:47:52,210 INFO L225 Difference]: With dead ends: 88675 [2022-02-10 02:47:52,210 INFO L226 Difference]: Without dead ends: 88649 [2022-02-10 02:47:52,211 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 82 SyntacticMatches, 1 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2661 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=2726, Invalid=6586, Unknown=0, NotChecked=0, Total=9312 [2022-02-10 02:47:52,211 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 192 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 726 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 726 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:47:52,211 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [192 Valid, 405 Invalid, 790 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 726 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:47:52,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88649 states. [2022-02-10 02:47:53,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88649 to 72130. [2022-02-10 02:47:53,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72130 states, 72129 states have (on average 1.688571864298687) internal successors, (121795), 72129 states have internal predecessors, (121795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:47:54,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72130 states to 72130 states and 121795 transitions. [2022-02-10 02:47:54,029 INFO L78 Accepts]: Start accepts. Automaton has 72130 states and 121795 transitions. Word has length 45 [2022-02-10 02:47:54,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:47:54,029 INFO L470 AbstractCegarLoop]: Abstraction has 72130 states and 121795 transitions. [2022-02-10 02:47:54,030 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.1363636363636362) internal successors, (69), 22 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:47:54,030 INFO L276 IsEmpty]: Start isEmpty. Operand 72130 states and 121795 transitions. [2022-02-10 02:47:54,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-02-10 02:47:54,088 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:47:54,088 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:47:54,112 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Ended with exit code 0 [2022-02-10 02:47:54,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117,114 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:47:54,288 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:47:54,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:47:54,289 INFO L85 PathProgramCache]: Analyzing trace with hash -140674952, now seen corresponding path program 114 times [2022-02-10 02:47:54,289 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:47:54,289 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302619465] [2022-02-10 02:47:54,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:47:54,289 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:47:54,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:47:54,351 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 22 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:47:54,351 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:47:54,351 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302619465] [2022-02-10 02:47:54,351 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302619465] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:47:54,351 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1555041683] [2022-02-10 02:47:54,351 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:47:54,351 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:47:54,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:47:54,352 INFO L229 MonitoredProcess]: Starting monitored process 115 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:47:54,353 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Waiting until timeout for monitored process [2022-02-10 02:47:54,374 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-02-10 02:47:54,374 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:47:54,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 02:47:54,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:47:54,535 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 35 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:47:54,535 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:47:54,601 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 22 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:47:54,602 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1555041683] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:47:54,602 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:47:54,602 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 14] total 22 [2022-02-10 02:47:54,602 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067173787] [2022-02-10 02:47:54,602 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:47:54,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-10 02:47:54,602 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:47:54,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-10 02:47:54,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=349, Unknown=0, NotChecked=0, Total=462 [2022-02-10 02:47:54,602 INFO L87 Difference]: Start difference. First operand 72130 states and 121795 transitions. Second operand has 22 states, 22 states have (on average 3.1363636363636362) internal successors, (69), 22 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:47:56,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:47:56,466 INFO L93 Difference]: Finished difference Result 92804 states and 155716 transitions. [2022-02-10 02:47:56,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2022-02-10 02:47:56,466 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.1363636363636362) internal successors, (69), 22 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2022-02-10 02:47:56,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:47:56,703 INFO L225 Difference]: With dead ends: 92804 [2022-02-10 02:47:56,703 INFO L226 Difference]: Without dead ends: 92793 [2022-02-10 02:47:56,703 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 82 SyntacticMatches, 1 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3396 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=3429, Invalid=8127, Unknown=0, NotChecked=0, Total=11556 [2022-02-10 02:47:56,704 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 198 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 859 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:47:56,704 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [198 Valid, 464 Invalid, 916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 859 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:47:56,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92793 states. [2022-02-10 02:47:58,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92793 to 73873. [2022-02-10 02:47:58,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73873 states, 73872 states have (on average 1.689043209876543) internal successors, (124773), 73872 states have internal predecessors, (124773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:47:58,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73873 states to 73873 states and 124773 transitions. [2022-02-10 02:47:58,630 INFO L78 Accepts]: Start accepts. Automaton has 73873 states and 124773 transitions. Word has length 45 [2022-02-10 02:47:58,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:47:58,631 INFO L470 AbstractCegarLoop]: Abstraction has 73873 states and 124773 transitions. [2022-02-10 02:47:58,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.1363636363636362) internal successors, (69), 22 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:47:58,631 INFO L276 IsEmpty]: Start isEmpty. Operand 73873 states and 124773 transitions. [2022-02-10 02:47:58,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-02-10 02:47:58,690 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:47:58,690 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:47:58,707 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Forceful destruction successful, exit code 0 [2022-02-10 02:47:58,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118,115 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:47:58,892 INFO L402 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:47:58,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:47:58,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1272724892, now seen corresponding path program 115 times [2022-02-10 02:47:58,892 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:47:58,892 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473868328] [2022-02-10 02:47:58,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:47:58,892 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:47:58,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:47:58,951 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 22 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:47:58,951 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:47:58,951 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473868328] [2022-02-10 02:47:58,951 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473868328] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:47:58,951 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1135129684] [2022-02-10 02:47:58,951 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:47:58,951 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:47:58,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:47:58,952 INFO L229 MonitoredProcess]: Starting monitored process 116 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:47:58,953 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Waiting until timeout for monitored process [2022-02-10 02:47:58,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:47:58,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 02:47:58,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:47:59,123 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 35 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:47:59,123 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:47:59,199 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 22 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:47:59,199 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1135129684] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:47:59,199 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:47:59,199 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 14] total 22 [2022-02-10 02:47:59,199 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240109001] [2022-02-10 02:47:59,200 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:47:59,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-10 02:47:59,200 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:47:59,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-10 02:47:59,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=338, Unknown=0, NotChecked=0, Total=462 [2022-02-10 02:47:59,200 INFO L87 Difference]: Start difference. First operand 73873 states and 124773 transitions. Second operand has 22 states, 22 states have (on average 3.1363636363636362) internal successors, (69), 22 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:01,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:48:01,079 INFO L93 Difference]: Finished difference Result 98547 states and 165764 transitions. [2022-02-10 02:48:01,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2022-02-10 02:48:01,079 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.1363636363636362) internal successors, (69), 22 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2022-02-10 02:48:01,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:48:01,327 INFO L225 Difference]: With dead ends: 98547 [2022-02-10 02:48:01,328 INFO L226 Difference]: Without dead ends: 98547 [2022-02-10 02:48:01,328 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 82 SyntacticMatches, 1 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3537 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=3612, Invalid=7944, Unknown=0, NotChecked=0, Total=11556 [2022-02-10 02:48:01,329 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 257 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 899 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 899 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:48:01,329 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [257 Valid, 467 Invalid, 979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 899 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:48:01,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98547 states. [2022-02-10 02:48:02,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98547 to 73704. [2022-02-10 02:48:02,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73704 states, 73703 states have (on average 1.6901482978983215) internal successors, (124569), 73703 states have internal predecessors, (124569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:03,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73704 states to 73704 states and 124569 transitions. [2022-02-10 02:48:03,059 INFO L78 Accepts]: Start accepts. Automaton has 73704 states and 124569 transitions. Word has length 45 [2022-02-10 02:48:03,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:48:03,059 INFO L470 AbstractCegarLoop]: Abstraction has 73704 states and 124569 transitions. [2022-02-10 02:48:03,059 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.1363636363636362) internal successors, (69), 22 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:03,059 INFO L276 IsEmpty]: Start isEmpty. Operand 73704 states and 124569 transitions. [2022-02-10 02:48:03,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-02-10 02:48:03,351 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:48:03,351 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:48:03,368 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Forceful destruction successful, exit code 0 [2022-02-10 02:48:03,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119,116 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:03,567 INFO L402 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:48:03,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:48:03,567 INFO L85 PathProgramCache]: Analyzing trace with hash -249807278, now seen corresponding path program 116 times [2022-02-10 02:48:03,567 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:48:03,567 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279620136] [2022-02-10 02:48:03,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:48:03,568 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:48:03,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:48:03,633 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 35 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:03,634 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:48:03,634 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279620136] [2022-02-10 02:48:03,634 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279620136] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:48:03,634 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [792613120] [2022-02-10 02:48:03,634 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:48:03,634 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:03,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:48:03,635 INFO L229 MonitoredProcess]: Starting monitored process 117 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:48:03,636 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Waiting until timeout for monitored process [2022-02-10 02:48:03,656 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:48:03,656 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:48:03,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 02:48:03,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:48:03,813 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 51 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:03,814 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:48:03,878 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 35 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:03,878 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [792613120] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:48:03,878 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:48:03,878 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 23 [2022-02-10 02:48:03,878 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619974251] [2022-02-10 02:48:03,878 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:48:03,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-10 02:48:03,878 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:48:03,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-10 02:48:03,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=357, Unknown=0, NotChecked=0, Total=506 [2022-02-10 02:48:03,879 INFO L87 Difference]: Start difference. First operand 73704 states and 124569 transitions. Second operand has 23 states, 23 states have (on average 2.869565217391304) internal successors, (66), 23 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:05,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:48:05,101 INFO L93 Difference]: Finished difference Result 87166 states and 147086 transitions. [2022-02-10 02:48:05,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-02-10 02:48:05,102 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.869565217391304) internal successors, (66), 23 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2022-02-10 02:48:05,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:48:05,304 INFO L225 Difference]: With dead ends: 87166 [2022-02-10 02:48:05,304 INFO L226 Difference]: Without dead ends: 87157 [2022-02-10 02:48:05,305 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 81 SyntacticMatches, 1 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2161 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=2548, Invalid=5284, Unknown=0, NotChecked=0, Total=7832 [2022-02-10 02:48:05,305 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 260 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 715 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:48:05,305 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [260 Valid, 379 Invalid, 771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 715 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:48:05,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87157 states. [2022-02-10 02:48:06,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87157 to 70485. [2022-02-10 02:48:06,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70485 states, 70484 states have (on average 1.689106747630668) internal successors, (119055), 70484 states have internal predecessors, (119055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:07,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70485 states to 70485 states and 119055 transitions. [2022-02-10 02:48:07,081 INFO L78 Accepts]: Start accepts. Automaton has 70485 states and 119055 transitions. Word has length 45 [2022-02-10 02:48:07,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:48:07,081 INFO L470 AbstractCegarLoop]: Abstraction has 70485 states and 119055 transitions. [2022-02-10 02:48:07,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.869565217391304) internal successors, (66), 23 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:07,082 INFO L276 IsEmpty]: Start isEmpty. Operand 70485 states and 119055 transitions. [2022-02-10 02:48:07,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-02-10 02:48:07,144 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:48:07,144 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:48:07,169 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Ended with exit code 0 [2022-02-10 02:48:07,345 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120,117 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:07,345 INFO L402 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:48:07,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:48:07,345 INFO L85 PathProgramCache]: Analyzing trace with hash 346150102, now seen corresponding path program 117 times [2022-02-10 02:48:07,345 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:48:07,346 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905887965] [2022-02-10 02:48:07,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:48:07,346 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:48:07,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:48:07,424 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 15 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:07,424 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:48:07,424 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905887965] [2022-02-10 02:48:07,424 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905887965] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:48:07,424 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1069034056] [2022-02-10 02:48:07,424 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:48:07,424 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:07,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:48:07,425 INFO L229 MonitoredProcess]: Starting monitored process 118 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:48:07,426 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Waiting until timeout for monitored process [2022-02-10 02:48:07,448 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-02-10 02:48:07,448 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:48:07,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 02:48:07,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:48:07,727 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 35 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:07,727 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:48:07,798 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 15 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:07,798 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1069034056] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:48:07,798 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:48:07,799 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 24 [2022-02-10 02:48:07,799 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579752328] [2022-02-10 02:48:07,799 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:48:07,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-10 02:48:07,799 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:48:07,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-10 02:48:07,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=426, Unknown=0, NotChecked=0, Total=552 [2022-02-10 02:48:07,799 INFO L87 Difference]: Start difference. First operand 70485 states and 119055 transitions. Second operand has 24 states, 24 states have (on average 3.0) internal successors, (72), 24 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:09,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:48:09,165 INFO L93 Difference]: Finished difference Result 84860 states and 142807 transitions. [2022-02-10 02:48:09,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-02-10 02:48:09,165 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.0) internal successors, (72), 24 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2022-02-10 02:48:09,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:48:09,352 INFO L225 Difference]: With dead ends: 84860 [2022-02-10 02:48:09,353 INFO L226 Difference]: Without dead ends: 84815 [2022-02-10 02:48:09,353 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 80 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1541 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1752, Invalid=4100, Unknown=0, NotChecked=0, Total=5852 [2022-02-10 02:48:09,353 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 145 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 656 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 656 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:48:09,353 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [145 Valid, 373 Invalid, 701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 656 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:48:09,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84815 states. [2022-02-10 02:48:10,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84815 to 70060. [2022-02-10 02:48:10,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70060 states, 70059 states have (on average 1.6881057394481793) internal successors, (118267), 70059 states have internal predecessors, (118267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:10,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70060 states to 70060 states and 118267 transitions. [2022-02-10 02:48:10,906 INFO L78 Accepts]: Start accepts. Automaton has 70060 states and 118267 transitions. Word has length 45 [2022-02-10 02:48:10,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:48:10,906 INFO L470 AbstractCegarLoop]: Abstraction has 70060 states and 118267 transitions. [2022-02-10 02:48:10,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.0) internal successors, (72), 24 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:10,906 INFO L276 IsEmpty]: Start isEmpty. Operand 70060 states and 118267 transitions. [2022-02-10 02:48:10,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-02-10 02:48:10,959 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:48:10,960 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:48:10,975 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Ended with exit code 0 [2022-02-10 02:48:11,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121,118 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:11,160 INFO L402 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:48:11,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:48:11,160 INFO L85 PathProgramCache]: Analyzing trace with hash -793470450, now seen corresponding path program 118 times [2022-02-10 02:48:11,161 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:48:11,161 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880063803] [2022-02-10 02:48:11,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:48:11,161 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:48:11,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:48:11,232 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 15 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:11,232 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:48:11,232 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880063803] [2022-02-10 02:48:11,232 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880063803] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:48:11,232 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1634255861] [2022-02-10 02:48:11,232 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:48:11,232 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:11,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:48:11,233 INFO L229 MonitoredProcess]: Starting monitored process 119 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:48:11,234 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Waiting until timeout for monitored process [2022-02-10 02:48:11,254 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:48:11,254 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:48:11,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 02:48:11,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:48:11,640 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 35 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:11,641 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:48:11,709 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 15 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:11,710 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1634255861] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:48:11,710 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:48:11,710 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 14] total 23 [2022-02-10 02:48:11,710 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198328742] [2022-02-10 02:48:11,710 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:48:11,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-10 02:48:11,710 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:48:11,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-10 02:48:11,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2022-02-10 02:48:11,710 INFO L87 Difference]: Start difference. First operand 70060 states and 118267 transitions. Second operand has 23 states, 23 states have (on average 3.130434782608696) internal successors, (72), 23 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:12,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:48:12,938 INFO L93 Difference]: Finished difference Result 84937 states and 142754 transitions. [2022-02-10 02:48:12,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-02-10 02:48:12,938 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.130434782608696) internal successors, (72), 23 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2022-02-10 02:48:12,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:48:13,140 INFO L225 Difference]: With dead ends: 84937 [2022-02-10 02:48:13,141 INFO L226 Difference]: Without dead ends: 84907 [2022-02-10 02:48:13,142 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 81 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1603 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1760, Invalid=4246, Unknown=0, NotChecked=0, Total=6006 [2022-02-10 02:48:13,142 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 189 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 708 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 768 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 708 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:48:13,142 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [189 Valid, 374 Invalid, 768 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 708 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:48:13,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84907 states. [2022-02-10 02:48:14,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84907 to 69599. [2022-02-10 02:48:14,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69599 states, 69598 states have (on average 1.687289864651283) internal successors, (117432), 69598 states have internal predecessors, (117432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:14,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69599 states to 69599 states and 117432 transitions. [2022-02-10 02:48:14,850 INFO L78 Accepts]: Start accepts. Automaton has 69599 states and 117432 transitions. Word has length 45 [2022-02-10 02:48:14,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:48:14,850 INFO L470 AbstractCegarLoop]: Abstraction has 69599 states and 117432 transitions. [2022-02-10 02:48:14,850 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.130434782608696) internal successors, (72), 23 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:14,850 INFO L276 IsEmpty]: Start isEmpty. Operand 69599 states and 117432 transitions. [2022-02-10 02:48:14,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-02-10 02:48:14,911 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:48:14,911 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:48:14,930 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Forceful destruction successful, exit code 0 [2022-02-10 02:48:15,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 119 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable122 [2022-02-10 02:48:15,112 INFO L402 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:48:15,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:48:15,112 INFO L85 PathProgramCache]: Analyzing trace with hash -595419178, now seen corresponding path program 119 times [2022-02-10 02:48:15,112 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:48:15,112 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957655159] [2022-02-10 02:48:15,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:48:15,112 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:48:15,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:48:15,177 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 15 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:15,177 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:48:15,177 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957655159] [2022-02-10 02:48:15,177 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957655159] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:48:15,177 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1677801670] [2022-02-10 02:48:15,177 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:48:15,177 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:15,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:48:15,178 INFO L229 MonitoredProcess]: Starting monitored process 120 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:48:15,179 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Waiting until timeout for monitored process [2022-02-10 02:48:15,199 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2022-02-10 02:48:15,199 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:48:15,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 02:48:15,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:48:15,358 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 35 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:15,358 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:48:15,422 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 15 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:15,423 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1677801670] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:48:15,423 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:48:15,423 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15, 13] total 22 [2022-02-10 02:48:15,423 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875861996] [2022-02-10 02:48:15,423 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:48:15,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-10 02:48:15,423 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:48:15,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-10 02:48:15,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=353, Unknown=0, NotChecked=0, Total=462 [2022-02-10 02:48:15,423 INFO L87 Difference]: Start difference. First operand 69599 states and 117432 transitions. Second operand has 22 states, 22 states have (on average 3.272727272727273) internal successors, (72), 22 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:16,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:48:16,614 INFO L93 Difference]: Finished difference Result 88251 states and 148405 transitions. [2022-02-10 02:48:16,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-02-10 02:48:16,615 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.272727272727273) internal successors, (72), 22 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2022-02-10 02:48:16,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:48:17,099 INFO L225 Difference]: With dead ends: 88251 [2022-02-10 02:48:17,100 INFO L226 Difference]: Without dead ends: 88236 [2022-02-10 02:48:17,100 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 82 SyntacticMatches, 1 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1863 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=2069, Invalid=4903, Unknown=0, NotChecked=0, Total=6972 [2022-02-10 02:48:17,100 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 187 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:48:17,100 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [187 Valid, 316 Invalid, 643 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:48:17,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88236 states. [2022-02-10 02:48:18,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88236 to 70600. [2022-02-10 02:48:18,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70600 states, 70599 states have (on average 1.6877434524568338) internal successors, (119153), 70599 states have internal predecessors, (119153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:18,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70600 states to 70600 states and 119153 transitions. [2022-02-10 02:48:18,660 INFO L78 Accepts]: Start accepts. Automaton has 70600 states and 119153 transitions. Word has length 45 [2022-02-10 02:48:18,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:48:18,660 INFO L470 AbstractCegarLoop]: Abstraction has 70600 states and 119153 transitions. [2022-02-10 02:48:18,660 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.272727272727273) internal successors, (72), 22 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:18,660 INFO L276 IsEmpty]: Start isEmpty. Operand 70600 states and 119153 transitions. [2022-02-10 02:48:18,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-02-10 02:48:18,718 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:48:18,718 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:48:18,733 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Forceful destruction successful, exit code 0 [2022-02-10 02:48:18,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 120 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable123 [2022-02-10 02:48:18,918 INFO L402 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:48:18,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:48:18,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1166037234, now seen corresponding path program 120 times [2022-02-10 02:48:18,919 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:48:18,919 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484943265] [2022-02-10 02:48:18,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:48:18,919 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:48:18,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:48:18,980 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 15 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:18,980 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:48:18,980 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484943265] [2022-02-10 02:48:18,980 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484943265] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:48:18,980 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [495388188] [2022-02-10 02:48:18,981 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:48:18,981 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:18,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:48:18,982 INFO L229 MonitoredProcess]: Starting monitored process 121 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:48:18,982 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Waiting until timeout for monitored process [2022-02-10 02:48:19,003 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2022-02-10 02:48:19,003 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:48:19,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 02:48:19,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:48:19,198 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 35 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:19,199 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:48:19,272 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 15 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:19,272 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [495388188] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:48:19,272 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:48:19,272 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15, 13] total 22 [2022-02-10 02:48:19,273 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908289853] [2022-02-10 02:48:19,273 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:48:19,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-10 02:48:19,273 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:48:19,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-10 02:48:19,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=349, Unknown=0, NotChecked=0, Total=462 [2022-02-10 02:48:19,273 INFO L87 Difference]: Start difference. First operand 70600 states and 119153 transitions. Second operand has 22 states, 22 states have (on average 3.272727272727273) internal successors, (72), 22 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:21,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:48:21,062 INFO L93 Difference]: Finished difference Result 101344 states and 170103 transitions. [2022-02-10 02:48:21,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2022-02-10 02:48:21,063 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.272727272727273) internal successors, (72), 22 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2022-02-10 02:48:21,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:48:21,356 INFO L225 Difference]: With dead ends: 101344 [2022-02-10 02:48:21,356 INFO L226 Difference]: Without dead ends: 101333 [2022-02-10 02:48:21,356 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 82 SyntacticMatches, 1 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3009 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=3079, Invalid=7021, Unknown=0, NotChecked=0, Total=10100 [2022-02-10 02:48:21,357 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 256 mSDsluCounter, 372 mSDsCounter, 0 mSdLazyCounter, 737 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 811 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 737 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:48:21,357 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [256 Valid, 383 Invalid, 811 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 737 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:48:21,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101333 states. [2022-02-10 02:48:22,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101333 to 74626. [2022-02-10 02:48:23,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74626 states, 74625 states have (on average 1.6875979899497486) internal successors, (125937), 74625 states have internal predecessors, (125937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:23,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74626 states to 74626 states and 125937 transitions. [2022-02-10 02:48:23,195 INFO L78 Accepts]: Start accepts. Automaton has 74626 states and 125937 transitions. Word has length 45 [2022-02-10 02:48:23,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:48:23,195 INFO L470 AbstractCegarLoop]: Abstraction has 74626 states and 125937 transitions. [2022-02-10 02:48:23,195 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.272727272727273) internal successors, (72), 22 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:23,195 INFO L276 IsEmpty]: Start isEmpty. Operand 74626 states and 125937 transitions. [2022-02-10 02:48:23,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-02-10 02:48:23,254 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:48:23,254 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:48:23,275 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Ended with exit code 0 [2022-02-10 02:48:23,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 121 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable124 [2022-02-10 02:48:23,454 INFO L402 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:48:23,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:48:23,454 INFO L85 PathProgramCache]: Analyzing trace with hash 597142230, now seen corresponding path program 121 times [2022-02-10 02:48:23,455 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:48:23,455 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289273594] [2022-02-10 02:48:23,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:48:23,455 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:48:23,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:48:23,524 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 15 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:23,525 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:48:23,525 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289273594] [2022-02-10 02:48:23,525 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289273594] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:48:23,525 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1310906643] [2022-02-10 02:48:23,525 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:48:23,525 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:23,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:48:23,526 INFO L229 MonitoredProcess]: Starting monitored process 122 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:48:23,527 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Waiting until timeout for monitored process [2022-02-10 02:48:23,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:48:23,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 02:48:23,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:48:23,726 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 35 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:23,726 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:48:23,793 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 15 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:23,793 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1310906643] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:48:23,793 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:48:23,793 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15, 13] total 22 [2022-02-10 02:48:23,794 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815360931] [2022-02-10 02:48:23,794 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:48:23,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-10 02:48:23,794 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:48:23,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-10 02:48:23,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=339, Unknown=0, NotChecked=0, Total=462 [2022-02-10 02:48:23,794 INFO L87 Difference]: Start difference. First operand 74626 states and 125937 transitions. Second operand has 22 states, 22 states have (on average 3.272727272727273) internal successors, (72), 22 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:25,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:48:25,662 INFO L93 Difference]: Finished difference Result 109274 states and 183763 transitions. [2022-02-10 02:48:25,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2022-02-10 02:48:25,662 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.272727272727273) internal successors, (72), 22 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2022-02-10 02:48:25,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:48:25,969 INFO L225 Difference]: With dead ends: 109274 [2022-02-10 02:48:25,969 INFO L226 Difference]: Without dead ends: 109274 [2022-02-10 02:48:25,970 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 82 SyntacticMatches, 1 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3840 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=3682, Invalid=8090, Unknown=0, NotChecked=0, Total=11772 [2022-02-10 02:48:25,970 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 286 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 809 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:48:25,970 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [286 Valid, 459 Invalid, 899 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 809 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:48:26,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109274 states. [2022-02-10 02:48:27,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109274 to 76968. [2022-02-10 02:48:27,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76968 states, 76967 states have (on average 1.689464315875635) internal successors, (130033), 76967 states have internal predecessors, (130033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:27,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76968 states to 76968 states and 130033 transitions. [2022-02-10 02:48:27,967 INFO L78 Accepts]: Start accepts. Automaton has 76968 states and 130033 transitions. Word has length 45 [2022-02-10 02:48:27,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:48:27,968 INFO L470 AbstractCegarLoop]: Abstraction has 76968 states and 130033 transitions. [2022-02-10 02:48:27,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.272727272727273) internal successors, (72), 22 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:27,968 INFO L276 IsEmpty]: Start isEmpty. Operand 76968 states and 130033 transitions. [2022-02-10 02:48:28,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-02-10 02:48:28,035 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:48:28,036 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:48:28,053 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Forceful destruction successful, exit code 0 [2022-02-10 02:48:28,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 122 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable125 [2022-02-10 02:48:28,255 INFO L402 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:48:28,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:48:28,255 INFO L85 PathProgramCache]: Analyzing trace with hash -147722482, now seen corresponding path program 122 times [2022-02-10 02:48:28,255 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:48:28,255 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357882226] [2022-02-10 02:48:28,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:48:28,255 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:48:28,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:48:28,323 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 30 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:28,323 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:48:28,323 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357882226] [2022-02-10 02:48:28,324 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357882226] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:48:28,324 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1564030990] [2022-02-10 02:48:28,324 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:48:28,324 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:28,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:48:28,325 INFO L229 MonitoredProcess]: Starting monitored process 123 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:48:28,325 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Waiting until timeout for monitored process [2022-02-10 02:48:28,344 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:48:28,344 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:48:28,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 02:48:28,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:48:28,511 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 51 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:28,512 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:48:28,577 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 30 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:28,577 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1564030990] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:48:28,577 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:48:28,577 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 24 [2022-02-10 02:48:28,577 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750525542] [2022-02-10 02:48:28,578 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:48:28,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-10 02:48:28,578 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:48:28,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-10 02:48:28,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=402, Unknown=0, NotChecked=0, Total=552 [2022-02-10 02:48:28,578 INFO L87 Difference]: Start difference. First operand 76968 states and 130033 transitions. Second operand has 24 states, 24 states have (on average 2.875) internal successors, (69), 24 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:30,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:48:30,002 INFO L93 Difference]: Finished difference Result 98015 states and 165409 transitions. [2022-02-10 02:48:30,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-02-10 02:48:30,002 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.875) internal successors, (69), 24 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2022-02-10 02:48:30,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:48:30,234 INFO L225 Difference]: With dead ends: 98015 [2022-02-10 02:48:30,234 INFO L226 Difference]: Without dead ends: 97997 [2022-02-10 02:48:30,234 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 80 SyntacticMatches, 1 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2313 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=2455, Invalid=5555, Unknown=0, NotChecked=0, Total=8010 [2022-02-10 02:48:30,235 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 312 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 621 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 621 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:48:30,235 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [312 Valid, 321 Invalid, 693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 621 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:48:30,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97997 states. [2022-02-10 02:48:31,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97997 to 76123. [2022-02-10 02:48:31,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76123 states, 76122 states have (on average 1.6888153227713407) internal successors, (128556), 76122 states have internal predecessors, (128556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:32,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76123 states to 76123 states and 128556 transitions. [2022-02-10 02:48:32,157 INFO L78 Accepts]: Start accepts. Automaton has 76123 states and 128556 transitions. Word has length 45 [2022-02-10 02:48:32,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:48:32,158 INFO L470 AbstractCegarLoop]: Abstraction has 76123 states and 128556 transitions. [2022-02-10 02:48:32,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.875) internal successors, (69), 24 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:32,158 INFO L276 IsEmpty]: Start isEmpty. Operand 76123 states and 128556 transitions. [2022-02-10 02:48:32,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-02-10 02:48:32,209 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:48:32,209 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:48:32,225 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Ended with exit code 0 [2022-02-10 02:48:32,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126,123 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:32,423 INFO L402 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:48:32,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:48:32,424 INFO L85 PathProgramCache]: Analyzing trace with hash 2124399652, now seen corresponding path program 123 times [2022-02-10 02:48:32,424 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:48:32,424 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531947489] [2022-02-10 02:48:32,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:48:32,424 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:48:32,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:48:32,505 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 14 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:32,506 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:48:32,506 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531947489] [2022-02-10 02:48:32,507 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531947489] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:48:32,507 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [748866930] [2022-02-10 02:48:32,507 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:48:32,507 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:32,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:48:32,508 INFO L229 MonitoredProcess]: Starting monitored process 124 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:48:32,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Waiting until timeout for monitored process [2022-02-10 02:48:32,529 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-02-10 02:48:32,529 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:48:32,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 02:48:32,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:48:32,723 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 35 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:32,723 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:48:32,788 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 14 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:32,788 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [748866930] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:48:32,788 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:48:32,788 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 25 [2022-02-10 02:48:32,788 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385078417] [2022-02-10 02:48:32,788 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:48:32,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-10 02:48:32,789 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:48:32,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-10 02:48:32,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=465, Unknown=0, NotChecked=0, Total=600 [2022-02-10 02:48:32,789 INFO L87 Difference]: Start difference. First operand 76123 states and 128556 transitions. Second operand has 25 states, 25 states have (on average 3.0) internal successors, (75), 25 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:34,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:48:34,278 INFO L93 Difference]: Finished difference Result 84895 states and 142678 transitions. [2022-02-10 02:48:34,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-02-10 02:48:34,279 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.0) internal successors, (75), 25 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2022-02-10 02:48:34,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:48:34,467 INFO L225 Difference]: With dead ends: 84895 [2022-02-10 02:48:34,468 INFO L226 Difference]: Without dead ends: 84850 [2022-02-10 02:48:34,468 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 79 SyntacticMatches, 1 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1805 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1910, Invalid=4732, Unknown=0, NotChecked=0, Total=6642 [2022-02-10 02:48:34,468 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 160 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 808 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 808 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:48:34,469 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [160 Valid, 436 Invalid, 869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 808 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:48:34,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84850 states. [2022-02-10 02:48:35,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84850 to 75449. [2022-02-10 02:48:35,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75449 states, 75448 states have (on average 1.6873873396246422) internal successors, (127310), 75448 states have internal predecessors, (127310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:35,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75449 states to 75449 states and 127310 transitions. [2022-02-10 02:48:35,992 INFO L78 Accepts]: Start accepts. Automaton has 75449 states and 127310 transitions. Word has length 45 [2022-02-10 02:48:35,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:48:35,992 INFO L470 AbstractCegarLoop]: Abstraction has 75449 states and 127310 transitions. [2022-02-10 02:48:35,992 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.0) internal successors, (75), 25 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:35,992 INFO L276 IsEmpty]: Start isEmpty. Operand 75449 states and 127310 transitions. [2022-02-10 02:48:36,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-02-10 02:48:36,058 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:48:36,058 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:48:36,076 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Forceful destruction successful, exit code 0 [2022-02-10 02:48:36,273 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127,124 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:36,273 INFO L402 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:48:36,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:48:36,274 INFO L85 PathProgramCache]: Analyzing trace with hash 635195704, now seen corresponding path program 124 times [2022-02-10 02:48:36,274 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:48:36,274 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878830285] [2022-02-10 02:48:36,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:48:36,274 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:48:36,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:48:36,334 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 14 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:36,335 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:48:36,335 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878830285] [2022-02-10 02:48:36,335 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878830285] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:48:36,335 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1899756562] [2022-02-10 02:48:36,335 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:48:36,335 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:36,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:48:36,336 INFO L229 MonitoredProcess]: Starting monitored process 125 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:48:36,337 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Waiting until timeout for monitored process [2022-02-10 02:48:36,357 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:48:36,357 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:48:36,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 02:48:36,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:48:36,544 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 35 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:36,544 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:48:36,609 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 14 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:36,610 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1899756562] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:48:36,610 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:48:36,610 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 14] total 24 [2022-02-10 02:48:36,610 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553800725] [2022-02-10 02:48:36,610 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:48:36,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-10 02:48:36,610 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:48:36,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-10 02:48:36,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=429, Unknown=0, NotChecked=0, Total=552 [2022-02-10 02:48:36,611 INFO L87 Difference]: Start difference. First operand 75449 states and 127310 transitions. Second operand has 24 states, 24 states have (on average 3.125) internal successors, (75), 24 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:38,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:48:38,233 INFO L93 Difference]: Finished difference Result 86763 states and 145635 transitions. [2022-02-10 02:48:38,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-02-10 02:48:38,234 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.125) internal successors, (75), 24 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2022-02-10 02:48:38,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:48:38,502 INFO L225 Difference]: With dead ends: 86763 [2022-02-10 02:48:38,502 INFO L226 Difference]: Without dead ends: 86733 [2022-02-10 02:48:38,503 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 80 SyntacticMatches, 1 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1799 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1865, Invalid=4777, Unknown=0, NotChecked=0, Total=6642 [2022-02-10 02:48:38,503 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 198 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 676 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 676 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:48:38,503 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [198 Valid, 359 Invalid, 736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 676 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:48:38,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86733 states. [2022-02-10 02:48:39,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86733 to 74567. [2022-02-10 02:48:39,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74567 states, 74566 states have (on average 1.6864656814097578) internal successors, (125753), 74566 states have internal predecessors, (125753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:40,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74567 states to 74567 states and 125753 transitions. [2022-02-10 02:48:40,009 INFO L78 Accepts]: Start accepts. Automaton has 74567 states and 125753 transitions. Word has length 45 [2022-02-10 02:48:40,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:48:40,009 INFO L470 AbstractCegarLoop]: Abstraction has 74567 states and 125753 transitions. [2022-02-10 02:48:40,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.125) internal successors, (75), 24 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:40,009 INFO L276 IsEmpty]: Start isEmpty. Operand 74567 states and 125753 transitions. [2022-02-10 02:48:40,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-02-10 02:48:40,061 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:48:40,061 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:48:40,079 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Ended with exit code 0 [2022-02-10 02:48:40,261 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 125 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable128 [2022-02-10 02:48:40,261 INFO L402 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:48:40,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:48:40,262 INFO L85 PathProgramCache]: Analyzing trace with hash -829621084, now seen corresponding path program 125 times [2022-02-10 02:48:40,262 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:48:40,262 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266566158] [2022-02-10 02:48:40,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:48:40,263 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:48:40,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:48:40,324 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 14 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:40,324 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:48:40,325 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266566158] [2022-02-10 02:48:40,325 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266566158] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:48:40,325 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1468995409] [2022-02-10 02:48:40,325 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:48:40,325 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:40,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:48:40,326 INFO L229 MonitoredProcess]: Starting monitored process 126 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:48:40,326 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Waiting until timeout for monitored process [2022-02-10 02:48:40,349 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2022-02-10 02:48:40,349 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:48:40,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 02:48:40,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:48:40,529 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 35 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:40,529 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:48:40,596 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 14 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:40,596 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1468995409] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:48:40,596 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:48:40,596 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15, 13] total 23 [2022-02-10 02:48:40,596 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341287934] [2022-02-10 02:48:40,596 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:48:40,596 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-10 02:48:40,596 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:48:40,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-10 02:48:40,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=390, Unknown=0, NotChecked=0, Total=506 [2022-02-10 02:48:40,597 INFO L87 Difference]: Start difference. First operand 74567 states and 125753 transitions. Second operand has 23 states, 23 states have (on average 3.260869565217391) internal successors, (75), 23 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:42,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:48:42,124 INFO L93 Difference]: Finished difference Result 94996 states and 159524 transitions. [2022-02-10 02:48:42,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-02-10 02:48:42,124 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.260869565217391) internal successors, (75), 23 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2022-02-10 02:48:42,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:48:42,355 INFO L225 Difference]: With dead ends: 94996 [2022-02-10 02:48:42,355 INFO L226 Difference]: Without dead ends: 94981 [2022-02-10 02:48:42,356 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 81 SyntacticMatches, 1 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2066 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=2148, Invalid=5162, Unknown=0, NotChecked=0, Total=7310 [2022-02-10 02:48:42,356 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 219 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 671 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 671 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:48:42,356 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [219 Valid, 355 Invalid, 733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 671 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:48:42,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94981 states. [2022-02-10 02:48:43,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94981 to 73414. [2022-02-10 02:48:43,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73414 states, 73413 states have (on average 1.684102270714996) internal successors, (123635), 73413 states have internal predecessors, (123635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:44,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73414 states to 73414 states and 123635 transitions. [2022-02-10 02:48:44,173 INFO L78 Accepts]: Start accepts. Automaton has 73414 states and 123635 transitions. Word has length 45 [2022-02-10 02:48:44,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:48:44,173 INFO L470 AbstractCegarLoop]: Abstraction has 73414 states and 123635 transitions. [2022-02-10 02:48:44,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.260869565217391) internal successors, (75), 23 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:44,174 INFO L276 IsEmpty]: Start isEmpty. Operand 73414 states and 123635 transitions. [2022-02-10 02:48:44,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-02-10 02:48:44,235 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:48:44,235 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:48:44,252 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Ended with exit code 0 [2022-02-10 02:48:44,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 126 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable129 [2022-02-10 02:48:44,436 INFO L402 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:48:44,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:48:44,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1926371144, now seen corresponding path program 126 times [2022-02-10 02:48:44,436 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:48:44,436 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873787001] [2022-02-10 02:48:44,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:48:44,437 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:48:44,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:48:44,490 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 14 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:44,490 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:48:44,490 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873787001] [2022-02-10 02:48:44,490 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873787001] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:48:44,490 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [651474294] [2022-02-10 02:48:44,490 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:48:44,490 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:44,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:48:44,491 INFO L229 MonitoredProcess]: Starting monitored process 127 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:48:44,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (127)] Waiting until timeout for monitored process [2022-02-10 02:48:44,514 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2022-02-10 02:48:44,515 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:48:44,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 02:48:44,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:48:44,687 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 35 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:44,687 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:48:44,751 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 14 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:44,751 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [651474294] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:48:44,751 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:48:44,751 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15, 12] total 22 [2022-02-10 02:48:44,751 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54378582] [2022-02-10 02:48:44,751 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:48:44,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-10 02:48:44,751 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:48:44,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-10 02:48:44,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2022-02-10 02:48:44,752 INFO L87 Difference]: Start difference. First operand 73414 states and 123635 transitions. Second operand has 22 states, 22 states have (on average 3.409090909090909) internal successors, (75), 22 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:46,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:48:46,388 INFO L93 Difference]: Finished difference Result 110955 states and 186648 transitions. [2022-02-10 02:48:46,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2022-02-10 02:48:46,388 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.409090909090909) internal successors, (75), 22 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2022-02-10 02:48:46,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:48:46,670 INFO L225 Difference]: With dead ends: 110955 [2022-02-10 02:48:46,671 INFO L226 Difference]: Without dead ends: 110951 [2022-02-10 02:48:46,671 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 82 SyntacticMatches, 1 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2820 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=2803, Invalid=6127, Unknown=0, NotChecked=0, Total=8930 [2022-02-10 02:48:46,671 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 304 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 638 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:48:46,671 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [304 Valid, 349 Invalid, 722 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 638 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:48:46,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110951 states. [2022-02-10 02:48:48,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110951 to 78648. [2022-02-10 02:48:48,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78648 states, 78647 states have (on average 1.6845524940557173) internal successors, (132485), 78647 states have internal predecessors, (132485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:48,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78648 states to 78648 states and 132485 transitions. [2022-02-10 02:48:48,709 INFO L78 Accepts]: Start accepts. Automaton has 78648 states and 132485 transitions. Word has length 45 [2022-02-10 02:48:48,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:48:48,709 INFO L470 AbstractCegarLoop]: Abstraction has 78648 states and 132485 transitions. [2022-02-10 02:48:48,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.409090909090909) internal successors, (75), 22 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:48,709 INFO L276 IsEmpty]: Start isEmpty. Operand 78648 states and 132485 transitions. [2022-02-10 02:48:48,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-02-10 02:48:48,765 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:48:48,765 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:48:48,781 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (127)] Ended with exit code 0 [2022-02-10 02:48:48,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130,127 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:48,970 INFO L402 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:48:48,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:48:48,971 INFO L85 PathProgramCache]: Analyzing trace with hash 82744612, now seen corresponding path program 127 times [2022-02-10 02:48:48,971 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:48:48,971 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7827600] [2022-02-10 02:48:48,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:48:48,971 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:48:48,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:48:49,027 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 14 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:49,027 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:48:49,027 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7827600] [2022-02-10 02:48:49,028 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7827600] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:48:49,028 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [550936131] [2022-02-10 02:48:49,028 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:48:49,028 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:49,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:48:49,029 INFO L229 MonitoredProcess]: Starting monitored process 128 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:48:49,030 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (128)] Waiting until timeout for monitored process [2022-02-10 02:48:49,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:48:49,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 02:48:49,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:48:49,244 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 35 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:49,244 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:48:49,321 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 14 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:49,321 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [550936131] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:48:49,321 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:48:49,321 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15, 12] total 22 [2022-02-10 02:48:49,321 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341899819] [2022-02-10 02:48:49,321 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:48:49,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-10 02:48:49,321 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:48:49,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-10 02:48:49,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=339, Unknown=0, NotChecked=0, Total=462 [2022-02-10 02:48:49,322 INFO L87 Difference]: Start difference. First operand 78648 states and 132485 transitions. Second operand has 22 states, 22 states have (on average 3.409090909090909) internal successors, (75), 22 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:51,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:48:51,396 INFO L93 Difference]: Finished difference Result 117276 states and 196797 transitions. [2022-02-10 02:48:51,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2022-02-10 02:48:51,397 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.409090909090909) internal successors, (75), 22 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2022-02-10 02:48:51,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:48:51,681 INFO L225 Difference]: With dead ends: 117276 [2022-02-10 02:48:51,681 INFO L226 Difference]: Without dead ends: 117276 [2022-02-10 02:48:51,682 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 82 SyntacticMatches, 1 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4613 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=4060, Invalid=8822, Unknown=0, NotChecked=0, Total=12882 [2022-02-10 02:48:51,682 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 272 mSDsluCounter, 558 mSDsCounter, 0 mSdLazyCounter, 845 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 484 SdHoareTripleChecker+Invalid, 926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 845 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:48:51,682 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [272 Valid, 484 Invalid, 926 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 845 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 02:48:51,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117276 states. [2022-02-10 02:48:53,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117276 to 81453. [2022-02-10 02:48:53,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81453 states, 81452 states have (on average 1.6856185237931542) internal successors, (137297), 81452 states have internal predecessors, (137297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:53,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81453 states to 81453 states and 137297 transitions. [2022-02-10 02:48:53,755 INFO L78 Accepts]: Start accepts. Automaton has 81453 states and 137297 transitions. Word has length 45 [2022-02-10 02:48:53,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:48:53,755 INFO L470 AbstractCegarLoop]: Abstraction has 81453 states and 137297 transitions. [2022-02-10 02:48:53,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.409090909090909) internal successors, (75), 22 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:53,755 INFO L276 IsEmpty]: Start isEmpty. Operand 81453 states and 137297 transitions. [2022-02-10 02:48:53,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-02-10 02:48:53,808 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:48:53,808 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:48:53,826 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (128)] Forceful destruction successful, exit code 0 [2022-02-10 02:48:54,009 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131,128 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:54,009 INFO L402 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:48:54,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:48:54,009 INFO L85 PathProgramCache]: Analyzing trace with hash 223589586, now seen corresponding path program 128 times [2022-02-10 02:48:54,009 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:48:54,009 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137808939] [2022-02-10 02:48:54,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:48:54,010 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:48:54,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:48:54,075 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 31 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:54,075 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:48:54,075 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137808939] [2022-02-10 02:48:54,075 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137808939] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:48:54,075 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [416715900] [2022-02-10 02:48:54,075 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:48:54,076 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:54,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:48:54,077 INFO L229 MonitoredProcess]: Starting monitored process 129 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:48:54,078 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (129)] Waiting until timeout for monitored process [2022-02-10 02:48:54,098 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:48:54,098 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:48:54,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 02:48:54,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:48:54,281 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 51 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:54,282 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:48:54,576 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 31 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:54,576 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [416715900] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:48:54,577 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:48:54,577 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 25 [2022-02-10 02:48:54,577 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506582865] [2022-02-10 02:48:54,577 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:48:54,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-10 02:48:54,577 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:48:54,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-10 02:48:54,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=447, Unknown=0, NotChecked=0, Total=600 [2022-02-10 02:48:54,577 INFO L87 Difference]: Start difference. First operand 81453 states and 137297 transitions. Second operand has 25 states, 25 states have (on average 2.88) internal successors, (72), 25 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:55,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:48:55,803 INFO L93 Difference]: Finished difference Result 108832 states and 183421 transitions. [2022-02-10 02:48:55,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-02-10 02:48:55,803 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.88) internal successors, (72), 25 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2022-02-10 02:48:55,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:48:56,083 INFO L225 Difference]: With dead ends: 108832 [2022-02-10 02:48:56,083 INFO L226 Difference]: Without dead ends: 108808 [2022-02-10 02:48:56,084 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 79 SyntacticMatches, 1 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2384 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=2313, Invalid=5697, Unknown=0, NotChecked=0, Total=8010 [2022-02-10 02:48:56,085 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 306 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 492 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:48:56,085 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [306 Valid, 260 Invalid, 577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 492 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:48:56,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108808 states. [2022-02-10 02:48:57,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108808 to 81194. [2022-02-10 02:48:57,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81194 states, 81193 states have (on average 1.68498515881911) internal successors, (136809), 81193 states have internal predecessors, (136809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:58,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81194 states to 81194 states and 136809 transitions. [2022-02-10 02:48:58,048 INFO L78 Accepts]: Start accepts. Automaton has 81194 states and 136809 transitions. Word has length 45 [2022-02-10 02:48:58,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:48:58,048 INFO L470 AbstractCegarLoop]: Abstraction has 81194 states and 136809 transitions. [2022-02-10 02:48:58,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.88) internal successors, (72), 25 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:58,049 INFO L276 IsEmpty]: Start isEmpty. Operand 81194 states and 136809 transitions. [2022-02-10 02:48:58,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-02-10 02:48:58,102 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:48:58,102 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:48:58,119 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (129)] Ended with exit code 0 [2022-02-10 02:48:58,302 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132,129 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:58,303 INFO L402 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:48:58,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:48:58,303 INFO L85 PathProgramCache]: Analyzing trace with hash -464852458, now seen corresponding path program 129 times [2022-02-10 02:48:58,303 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:48:58,303 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672323003] [2022-02-10 02:48:58,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:48:58,303 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:48:58,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:48:58,383 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 19 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:58,383 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:48:58,383 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672323003] [2022-02-10 02:48:58,383 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672323003] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:48:58,383 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [51245182] [2022-02-10 02:48:58,383 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:48:58,383 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:58,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:48:58,384 INFO L229 MonitoredProcess]: Starting monitored process 130 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:48:58,385 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (130)] Waiting until timeout for monitored process [2022-02-10 02:48:58,406 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-02-10 02:48:58,406 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:48:58,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 02:48:58,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:48:58,892 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 35 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:58,892 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:48:58,960 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 19 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:58,961 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [51245182] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:48:58,961 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:48:58,961 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 26 [2022-02-10 02:48:58,961 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781914639] [2022-02-10 02:48:58,961 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:48:58,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-10 02:48:58,961 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:48:58,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-10 02:48:58,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=504, Unknown=0, NotChecked=0, Total=650 [2022-02-10 02:48:58,962 INFO L87 Difference]: Start difference. First operand 81194 states and 136809 transitions. Second operand has 26 states, 26 states have (on average 3.0) internal successors, (78), 26 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:00,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:00,205 INFO L93 Difference]: Finished difference Result 86377 states and 144834 transitions. [2022-02-10 02:49:00,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-02-10 02:49:00,205 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.0) internal successors, (78), 26 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2022-02-10 02:49:00,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:00,373 INFO L225 Difference]: With dead ends: 86377 [2022-02-10 02:49:00,373 INFO L226 Difference]: Without dead ends: 86332 [2022-02-10 02:49:00,374 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 78 SyntacticMatches, 1 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1994 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1963, Invalid=5177, Unknown=0, NotChecked=0, Total=7140 [2022-02-10 02:49:00,374 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 153 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 701 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 758 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:00,375 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [153 Valid, 384 Invalid, 758 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 701 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:49:00,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86332 states. [2022-02-10 02:49:02,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86332 to 80331. [2022-02-10 02:49:02,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80331 states, 80330 states have (on average 1.6837794099340222) internal successors, (135258), 80330 states have internal predecessors, (135258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:02,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80331 states to 80331 states and 135258 transitions. [2022-02-10 02:49:02,269 INFO L78 Accepts]: Start accepts. Automaton has 80331 states and 135258 transitions. Word has length 45 [2022-02-10 02:49:02,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:02,269 INFO L470 AbstractCegarLoop]: Abstraction has 80331 states and 135258 transitions. [2022-02-10 02:49:02,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.0) internal successors, (78), 26 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:02,269 INFO L276 IsEmpty]: Start isEmpty. Operand 80331 states and 135258 transitions. [2022-02-10 02:49:02,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-02-10 02:49:02,320 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:02,321 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:02,337 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (130)] Ended with exit code 0 [2022-02-10 02:49:02,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 130 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable133 [2022-02-10 02:49:02,527 INFO L402 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:49:02,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:02,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1097313842, now seen corresponding path program 130 times [2022-02-10 02:49:02,528 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:02,528 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429537352] [2022-02-10 02:49:02,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:02,528 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:02,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:02,588 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 19 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:02,588 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:02,588 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429537352] [2022-02-10 02:49:02,588 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429537352] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:49:02,588 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1678676117] [2022-02-10 02:49:02,588 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:49:02,588 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:02,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:49:02,589 INFO L229 MonitoredProcess]: Starting monitored process 131 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:49:02,590 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (131)] Waiting until timeout for monitored process [2022-02-10 02:49:02,608 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:49:02,609 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:49:02,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 02:49:02,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:49:02,808 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 35 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:02,809 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:49:02,879 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 19 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:02,879 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1678676117] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:49:02,879 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:49:02,879 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 14] total 25 [2022-02-10 02:49:02,879 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500194105] [2022-02-10 02:49:02,879 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:49:02,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-10 02:49:02,879 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:02,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-10 02:49:02,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=467, Unknown=0, NotChecked=0, Total=600 [2022-02-10 02:49:02,880 INFO L87 Difference]: Start difference. First operand 80331 states and 135258 transitions. Second operand has 25 states, 25 states have (on average 3.12) internal successors, (78), 25 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:04,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:04,323 INFO L93 Difference]: Finished difference Result 91661 states and 153484 transitions. [2022-02-10 02:49:04,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-02-10 02:49:04,324 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.12) internal successors, (78), 25 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2022-02-10 02:49:04,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:04,551 INFO L225 Difference]: With dead ends: 91661 [2022-02-10 02:49:04,551 INFO L226 Difference]: Without dead ends: 91631 [2022-02-10 02:49:04,551 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 79 SyntacticMatches, 1 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1955 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1876, Invalid=5096, Unknown=0, NotChecked=0, Total=6972 [2022-02-10 02:49:04,552 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 214 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 684 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 747 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:04,552 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [214 Valid, 369 Invalid, 747 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 684 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:49:04,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91631 states. [2022-02-10 02:49:05,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91631 to 76533. [2022-02-10 02:49:05,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76533 states, 76532 states have (on average 1.682119897559191) internal successors, (128736), 76532 states have internal predecessors, (128736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:06,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76533 states to 76533 states and 128736 transitions. [2022-02-10 02:49:06,328 INFO L78 Accepts]: Start accepts. Automaton has 76533 states and 128736 transitions. Word has length 45 [2022-02-10 02:49:06,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:06,328 INFO L470 AbstractCegarLoop]: Abstraction has 76533 states and 128736 transitions. [2022-02-10 02:49:06,328 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.12) internal successors, (78), 25 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:06,328 INFO L276 IsEmpty]: Start isEmpty. Operand 76533 states and 128736 transitions. [2022-02-10 02:49:06,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-02-10 02:49:06,391 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:06,391 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:06,407 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (131)] Forceful destruction successful, exit code 0 [2022-02-10 02:49:06,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 131 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable134 [2022-02-10 02:49:06,591 INFO L402 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:49:06,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:06,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1383253270, now seen corresponding path program 131 times [2022-02-10 02:49:06,592 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:06,592 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960212364] [2022-02-10 02:49:06,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:06,592 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:06,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:06,647 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 19 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:06,648 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:06,648 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960212364] [2022-02-10 02:49:06,648 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960212364] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:49:06,648 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1973122351] [2022-02-10 02:49:06,648 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:49:06,648 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:06,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:49:06,649 INFO L229 MonitoredProcess]: Starting monitored process 132 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:49:06,649 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (132)] Waiting until timeout for monitored process [2022-02-10 02:49:06,670 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-02-10 02:49:06,671 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:49:06,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 02:49:06,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:49:06,869 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 35 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:06,870 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:49:06,942 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 19 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:06,942 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1973122351] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:49:06,942 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:49:06,942 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15, 13] total 24 [2022-02-10 02:49:06,942 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453794755] [2022-02-10 02:49:06,943 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:49:06,943 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-10 02:49:06,943 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:06,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-10 02:49:06,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=427, Unknown=0, NotChecked=0, Total=552 [2022-02-10 02:49:06,943 INFO L87 Difference]: Start difference. First operand 76533 states and 128736 transitions. Second operand has 24 states, 24 states have (on average 3.25) internal successors, (78), 24 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:08,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:08,425 INFO L93 Difference]: Finished difference Result 96131 states and 161003 transitions. [2022-02-10 02:49:08,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-02-10 02:49:08,425 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.25) internal successors, (78), 24 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2022-02-10 02:49:08,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:08,821 INFO L225 Difference]: With dead ends: 96131 [2022-02-10 02:49:08,821 INFO L226 Difference]: Without dead ends: 96116 [2022-02-10 02:49:08,821 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 80 SyntacticMatches, 1 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2663 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=2373, Invalid=5999, Unknown=0, NotChecked=0, Total=8372 [2022-02-10 02:49:08,821 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 288 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 745 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 745 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:08,821 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [288 Valid, 416 Invalid, 827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 745 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:49:08,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96116 states. [2022-02-10 02:49:10,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96116 to 70895. [2022-02-10 02:49:10,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70895 states, 70894 states have (on average 1.6799729173131719) internal successors, (119100), 70894 states have internal predecessors, (119100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:10,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70895 states to 70895 states and 119100 transitions. [2022-02-10 02:49:10,344 INFO L78 Accepts]: Start accepts. Automaton has 70895 states and 119100 transitions. Word has length 45 [2022-02-10 02:49:10,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:10,344 INFO L470 AbstractCegarLoop]: Abstraction has 70895 states and 119100 transitions. [2022-02-10 02:49:10,344 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.25) internal successors, (78), 24 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:10,344 INFO L276 IsEmpty]: Start isEmpty. Operand 70895 states and 119100 transitions. [2022-02-10 02:49:10,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-02-10 02:49:10,396 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:10,396 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:10,411 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (132)] Ended with exit code 0 [2022-02-10 02:49:10,596 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 132 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable135 [2022-02-10 02:49:10,597 INFO L402 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:49:10,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:10,597 INFO L85 PathProgramCache]: Analyzing trace with hash -1376364850, now seen corresponding path program 132 times [2022-02-10 02:49:10,597 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:10,597 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695674159] [2022-02-10 02:49:10,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:10,597 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:10,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:10,650 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 19 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:10,651 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:10,651 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695674159] [2022-02-10 02:49:10,651 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695674159] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:49:10,651 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1223262267] [2022-02-10 02:49:10,651 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:49:10,651 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:10,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:49:10,652 INFO L229 MonitoredProcess]: Starting monitored process 133 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:49:10,653 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (133)] Waiting until timeout for monitored process [2022-02-10 02:49:10,674 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2022-02-10 02:49:10,675 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:49:10,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 02:49:10,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:49:10,862 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 35 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:10,862 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:49:10,929 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 19 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:10,930 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1223262267] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:49:10,930 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:49:10,930 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15, 12] total 23 [2022-02-10 02:49:10,930 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250036689] [2022-02-10 02:49:10,930 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:49:10,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-10 02:49:10,930 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:10,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-10 02:49:10,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=384, Unknown=0, NotChecked=0, Total=506 [2022-02-10 02:49:10,931 INFO L87 Difference]: Start difference. First operand 70895 states and 119100 transitions. Second operand has 23 states, 23 states have (on average 3.391304347826087) internal successors, (78), 23 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:12,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:12,806 INFO L93 Difference]: Finished difference Result 107879 states and 181071 transitions. [2022-02-10 02:49:12,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2022-02-10 02:49:12,806 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.391304347826087) internal successors, (78), 23 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2022-02-10 02:49:12,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:13,054 INFO L225 Difference]: With dead ends: 107879 [2022-02-10 02:49:13,054 INFO L226 Difference]: Without dead ends: 107875 [2022-02-10 02:49:13,055 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 81 SyntacticMatches, 1 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3848 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=3272, Invalid=7440, Unknown=0, NotChecked=0, Total=10712 [2022-02-10 02:49:13,055 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 300 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 710 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 710 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:13,055 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [300 Valid, 387 Invalid, 796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 710 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:49:13,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107875 states. [2022-02-10 02:49:14,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107875 to 67959. [2022-02-10 02:49:14,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67959 states, 67958 states have (on average 1.6780070043262014) internal successors, (114034), 67958 states have internal predecessors, (114034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:14,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67959 states to 67959 states and 114034 transitions. [2022-02-10 02:49:14,852 INFO L78 Accepts]: Start accepts. Automaton has 67959 states and 114034 transitions. Word has length 45 [2022-02-10 02:49:14,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:14,852 INFO L470 AbstractCegarLoop]: Abstraction has 67959 states and 114034 transitions. [2022-02-10 02:49:14,852 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.391304347826087) internal successors, (78), 23 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:14,853 INFO L276 IsEmpty]: Start isEmpty. Operand 67959 states and 114034 transitions. [2022-02-10 02:49:14,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-02-10 02:49:14,898 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:14,898 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:14,914 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (133)] Forceful destruction successful, exit code 0 [2022-02-10 02:49:15,098 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 133 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable136 [2022-02-10 02:49:15,098 INFO L402 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:49:15,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:15,098 INFO L85 PathProgramCache]: Analyzing trace with hash 106618902, now seen corresponding path program 133 times [2022-02-10 02:49:15,099 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:15,099 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997612598] [2022-02-10 02:49:15,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:15,099 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:15,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:15,157 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 19 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:15,157 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:15,158 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997612598] [2022-02-10 02:49:15,158 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997612598] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:49:15,158 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [471233193] [2022-02-10 02:49:15,158 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:49:15,158 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:15,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:49:15,159 INFO L229 MonitoredProcess]: Starting monitored process 134 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:49:15,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (134)] Waiting until timeout for monitored process [2022-02-10 02:49:15,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:15,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 02:49:15,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:49:15,401 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 35 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:15,401 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:49:15,466 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 19 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:15,466 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [471233193] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:49:15,466 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:49:15,467 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 15, 11] total 22 [2022-02-10 02:49:15,467 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95942585] [2022-02-10 02:49:15,467 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:49:15,467 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-10 02:49:15,467 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:15,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-10 02:49:15,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=338, Unknown=0, NotChecked=0, Total=462 [2022-02-10 02:49:15,467 INFO L87 Difference]: Start difference. First operand 67959 states and 114034 transitions. Second operand has 22 states, 22 states have (on average 3.5454545454545454) internal successors, (78), 22 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:17,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:17,585 INFO L93 Difference]: Finished difference Result 126090 states and 212596 transitions. [2022-02-10 02:49:17,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2022-02-10 02:49:17,585 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.5454545454545454) internal successors, (78), 22 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2022-02-10 02:49:17,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:17,877 INFO L225 Difference]: With dead ends: 126090 [2022-02-10 02:49:17,877 INFO L226 Difference]: Without dead ends: 126090 [2022-02-10 02:49:17,878 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 82 SyntacticMatches, 1 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6260 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=4880, Invalid=10620, Unknown=0, NotChecked=0, Total=15500 [2022-02-10 02:49:17,878 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 294 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 765 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 765 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:17,878 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [294 Valid, 446 Invalid, 855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 765 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:49:18,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126090 states. [2022-02-10 02:49:19,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126090 to 79595. [2022-02-10 02:49:19,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79595 states, 79594 states have (on average 1.6851395833856824) internal successors, (134127), 79594 states have internal predecessors, (134127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:19,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79595 states to 79595 states and 134127 transitions. [2022-02-10 02:49:19,891 INFO L78 Accepts]: Start accepts. Automaton has 79595 states and 134127 transitions. Word has length 45 [2022-02-10 02:49:19,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:19,892 INFO L470 AbstractCegarLoop]: Abstraction has 79595 states and 134127 transitions. [2022-02-10 02:49:19,892 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.5454545454545454) internal successors, (78), 22 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:19,892 INFO L276 IsEmpty]: Start isEmpty. Operand 79595 states and 134127 transitions. [2022-02-10 02:49:20,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-02-10 02:49:20,164 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:20,164 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:20,183 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (134)] Ended with exit code 0 [2022-02-10 02:49:20,380 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137,134 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:20,380 INFO L402 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:49:20,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:20,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1854347122, now seen corresponding path program 134 times [2022-02-10 02:49:20,380 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:20,380 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251158049] [2022-02-10 02:49:20,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:20,380 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:20,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:20,449 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 38 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:20,449 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:20,449 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251158049] [2022-02-10 02:49:20,449 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251158049] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:49:20,449 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [399058271] [2022-02-10 02:49:20,449 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:49:20,449 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:20,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:49:20,450 INFO L229 MonitoredProcess]: Starting monitored process 135 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:49:20,451 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (135)] Waiting until timeout for monitored process [2022-02-10 02:49:20,470 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:49:20,470 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:49:20,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 02:49:20,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:49:20,671 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 51 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:20,671 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:49:20,741 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 38 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:20,741 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [399058271] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:49:20,741 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:49:20,742 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 26 [2022-02-10 02:49:20,742 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750526941] [2022-02-10 02:49:20,742 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:49:20,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-10 02:49:20,742 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:20,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-10 02:49:20,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=492, Unknown=0, NotChecked=0, Total=650 [2022-02-10 02:49:20,743 INFO L87 Difference]: Start difference. First operand 79595 states and 134127 transitions. Second operand has 26 states, 26 states have (on average 2.8846153846153846) internal successors, (75), 26 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:21,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:21,970 INFO L93 Difference]: Finished difference Result 110864 states and 186889 transitions. [2022-02-10 02:49:21,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-02-10 02:49:21,971 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.8846153846153846) internal successors, (75), 26 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2022-02-10 02:49:21,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:22,449 INFO L225 Difference]: With dead ends: 110864 [2022-02-10 02:49:22,450 INFO L226 Difference]: Without dead ends: 110834 [2022-02-10 02:49:22,450 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 78 SyntacticMatches, 1 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2377 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=2129, Invalid=5703, Unknown=0, NotChecked=0, Total=7832 [2022-02-10 02:49:22,450 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 300 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 455 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:22,450 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [300 Valid, 234 Invalid, 557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 455 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:49:22,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110834 states. [2022-02-10 02:49:23,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110834 to 79578. [2022-02-10 02:49:23,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79578 states, 79577 states have (on average 1.6843434660768815) internal successors, (134035), 79577 states have internal predecessors, (134035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:24,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79578 states to 79578 states and 134035 transitions. [2022-02-10 02:49:24,077 INFO L78 Accepts]: Start accepts. Automaton has 79578 states and 134035 transitions. Word has length 45 [2022-02-10 02:49:24,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:24,077 INFO L470 AbstractCegarLoop]: Abstraction has 79578 states and 134035 transitions. [2022-02-10 02:49:24,077 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.8846153846153846) internal successors, (75), 26 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:24,077 INFO L276 IsEmpty]: Start isEmpty. Operand 79578 states and 134035 transitions. [2022-02-10 02:49:24,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-02-10 02:49:24,349 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:24,350 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:24,365 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (135)] Forceful destruction successful, exit code 0 [2022-02-10 02:49:24,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 135 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable138 [2022-02-10 02:49:24,563 INFO L402 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:49:24,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:24,564 INFO L85 PathProgramCache]: Analyzing trace with hash 738174692, now seen corresponding path program 135 times [2022-02-10 02:49:24,564 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:24,564 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113728236] [2022-02-10 02:49:24,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:24,564 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:24,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:24,636 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 30 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:24,636 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:24,636 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113728236] [2022-02-10 02:49:24,636 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113728236] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:49:24,636 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1720165596] [2022-02-10 02:49:24,636 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:49:24,636 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:24,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:49:24,637 INFO L229 MonitoredProcess]: Starting monitored process 136 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:49:24,638 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (136)] Waiting until timeout for monitored process [2022-02-10 02:49:24,658 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-02-10 02:49:24,658 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:49:24,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 02:49:24,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:49:24,886 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 35 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:24,886 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:49:24,961 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 30 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:24,961 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1720165596] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:49:24,961 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:49:24,961 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 27 [2022-02-10 02:49:24,961 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427418184] [2022-02-10 02:49:24,961 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:49:24,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-10 02:49:24,961 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:24,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-10 02:49:24,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=543, Unknown=0, NotChecked=0, Total=702 [2022-02-10 02:49:24,962 INFO L87 Difference]: Start difference. First operand 79578 states and 134035 transitions. Second operand has 27 states, 27 states have (on average 3.0) internal successors, (81), 27 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:26,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:26,355 INFO L93 Difference]: Finished difference Result 94825 states and 158648 transitions. [2022-02-10 02:49:26,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-02-10 02:49:26,355 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.0) internal successors, (81), 27 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2022-02-10 02:49:26,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:26,827 INFO L225 Difference]: With dead ends: 94825 [2022-02-10 02:49:26,827 INFO L226 Difference]: Without dead ends: 94780 [2022-02-10 02:49:26,827 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 77 SyntacticMatches, 1 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2133 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=2007, Invalid=5475, Unknown=0, NotChecked=0, Total=7482 [2022-02-10 02:49:26,828 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 165 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 633 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 633 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:26,828 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [165 Valid, 365 Invalid, 695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 633 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:49:26,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94780 states. [2022-02-10 02:49:28,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94780 to 84307. [2022-02-10 02:49:28,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84307 states, 84306 states have (on average 1.6824306692287618) internal successors, (141839), 84306 states have internal predecessors, (141839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:28,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84307 states to 84307 states and 141839 transitions. [2022-02-10 02:49:28,374 INFO L78 Accepts]: Start accepts. Automaton has 84307 states and 141839 transitions. Word has length 45 [2022-02-10 02:49:28,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:28,375 INFO L470 AbstractCegarLoop]: Abstraction has 84307 states and 141839 transitions. [2022-02-10 02:49:28,375 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.0) internal successors, (81), 27 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:28,375 INFO L276 IsEmpty]: Start isEmpty. Operand 84307 states and 141839 transitions. [2022-02-10 02:49:28,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-02-10 02:49:28,421 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:28,422 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:28,437 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (136)] Ended with exit code 0 [2022-02-10 02:49:28,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139,136 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:28,622 INFO L402 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:49:28,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:28,622 INFO L85 PathProgramCache]: Analyzing trace with hash -1667202696, now seen corresponding path program 136 times [2022-02-10 02:49:28,622 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:28,623 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267252073] [2022-02-10 02:49:28,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:28,623 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:28,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:28,684 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 30 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:28,684 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:28,684 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267252073] [2022-02-10 02:49:28,684 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267252073] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:49:28,684 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [934251125] [2022-02-10 02:49:28,684 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:49:28,685 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:28,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:49:28,686 INFO L229 MonitoredProcess]: Starting monitored process 137 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:49:28,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (137)] Waiting until timeout for monitored process [2022-02-10 02:49:28,706 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:49:28,706 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:49:28,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 02:49:28,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:49:29,143 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 35 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:29,143 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:49:29,210 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 30 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:29,211 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [934251125] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:49:29,211 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:49:29,211 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 14] total 26 [2022-02-10 02:49:29,211 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707709053] [2022-02-10 02:49:29,211 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:49:29,211 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-10 02:49:29,211 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:29,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-10 02:49:29,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=505, Unknown=0, NotChecked=0, Total=650 [2022-02-10 02:49:29,212 INFO L87 Difference]: Start difference. First operand 84307 states and 141839 transitions. Second operand has 26 states, 26 states have (on average 3.1153846153846154) internal successors, (81), 26 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:30,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:30,615 INFO L93 Difference]: Finished difference Result 108452 states and 181322 transitions. [2022-02-10 02:49:30,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-02-10 02:49:30,615 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.1153846153846154) internal successors, (81), 26 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2022-02-10 02:49:30,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:30,876 INFO L225 Difference]: With dead ends: 108452 [2022-02-10 02:49:30,877 INFO L226 Difference]: Without dead ends: 108422 [2022-02-10 02:49:30,878 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 78 SyntacticMatches, 1 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2397 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2009, Invalid=5823, Unknown=0, NotChecked=0, Total=7832 [2022-02-10 02:49:30,878 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 268 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 723 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:30,878 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [268 Valid, 447 Invalid, 807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 723 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:49:31,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108422 states. [2022-02-10 02:49:32,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108422 to 86557. [2022-02-10 02:49:32,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86557 states, 86556 states have (on average 1.6809348860853088) internal successors, (145495), 86556 states have internal predecessors, (145495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:32,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86557 states to 86557 states and 145495 transitions. [2022-02-10 02:49:32,843 INFO L78 Accepts]: Start accepts. Automaton has 86557 states and 145495 transitions. Word has length 45 [2022-02-10 02:49:32,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:32,843 INFO L470 AbstractCegarLoop]: Abstraction has 86557 states and 145495 transitions. [2022-02-10 02:49:32,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.1153846153846154) internal successors, (81), 26 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:32,843 INFO L276 IsEmpty]: Start isEmpty. Operand 86557 states and 145495 transitions. [2022-02-10 02:49:33,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-02-10 02:49:33,129 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:33,130 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:33,171 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (137)] Ended with exit code 0 [2022-02-10 02:49:33,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140,137 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:33,330 INFO L402 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:49:33,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:33,330 INFO L85 PathProgramCache]: Analyzing trace with hash 1670106980, now seen corresponding path program 137 times [2022-02-10 02:49:33,330 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:33,330 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540233101] [2022-02-10 02:49:33,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:33,331 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:33,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:33,385 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 30 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:33,386 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:33,386 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540233101] [2022-02-10 02:49:33,386 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540233101] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:49:33,386 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1493199824] [2022-02-10 02:49:33,386 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:49:33,386 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:33,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:49:33,387 INFO L229 MonitoredProcess]: Starting monitored process 138 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:49:33,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (138)] Waiting until timeout for monitored process [2022-02-10 02:49:33,406 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-02-10 02:49:33,406 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:49:33,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 02:49:33,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:49:33,625 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 35 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:33,625 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:49:33,697 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 30 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:33,697 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1493199824] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:49:33,697 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:49:33,697 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15, 13] total 25 [2022-02-10 02:49:33,697 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450635827] [2022-02-10 02:49:33,698 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:49:33,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-10 02:49:33,698 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:33,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-10 02:49:33,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=464, Unknown=0, NotChecked=0, Total=600 [2022-02-10 02:49:33,698 INFO L87 Difference]: Start difference. First operand 86557 states and 145495 transitions. Second operand has 25 states, 25 states have (on average 3.24) internal successors, (81), 25 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:35,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:35,283 INFO L93 Difference]: Finished difference Result 117411 states and 196680 transitions. [2022-02-10 02:49:35,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-02-10 02:49:35,283 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.24) internal successors, (81), 25 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2022-02-10 02:49:35,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:35,922 INFO L225 Difference]: With dead ends: 117411 [2022-02-10 02:49:35,922 INFO L226 Difference]: Without dead ends: 117396 [2022-02-10 02:49:35,923 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 79 SyntacticMatches, 1 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3669 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=2697, Invalid=7403, Unknown=0, NotChecked=0, Total=10100 [2022-02-10 02:49:35,923 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 293 mSDsluCounter, 568 mSDsCounter, 0 mSdLazyCounter, 842 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 502 SdHoareTripleChecker+Invalid, 928 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 842 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:35,923 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [293 Valid, 502 Invalid, 928 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 842 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:49:36,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117396 states. [2022-02-10 02:49:37,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117396 to 85603. [2022-02-10 02:49:37,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85603 states, 85602 states have (on average 1.6795168337188384) internal successors, (143770), 85602 states have internal predecessors, (143770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:37,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85603 states to 85603 states and 143770 transitions. [2022-02-10 02:49:37,861 INFO L78 Accepts]: Start accepts. Automaton has 85603 states and 143770 transitions. Word has length 45 [2022-02-10 02:49:37,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:37,861 INFO L470 AbstractCegarLoop]: Abstraction has 85603 states and 143770 transitions. [2022-02-10 02:49:37,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.24) internal successors, (81), 25 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:37,861 INFO L276 IsEmpty]: Start isEmpty. Operand 85603 states and 143770 transitions. [2022-02-10 02:49:37,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-02-10 02:49:37,916 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:37,916 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:37,932 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (138)] Ended with exit code 0 [2022-02-10 02:49:38,117 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141,138 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:38,117 INFO L402 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:49:38,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:38,120 INFO L85 PathProgramCache]: Analyzing trace with hash -1439094536, now seen corresponding path program 138 times [2022-02-10 02:49:38,120 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:38,120 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936407999] [2022-02-10 02:49:38,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:38,120 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:38,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:38,168 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 30 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:38,169 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:38,169 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936407999] [2022-02-10 02:49:38,169 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936407999] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:49:38,169 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1006595713] [2022-02-10 02:49:38,169 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:49:38,169 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:38,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:49:38,170 INFO L229 MonitoredProcess]: Starting monitored process 139 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:49:38,170 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (139)] Waiting until timeout for monitored process [2022-02-10 02:49:38,190 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-02-10 02:49:38,191 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:49:38,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 02:49:38,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:49:38,403 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 35 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:38,403 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:49:38,465 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 30 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:38,466 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1006595713] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:49:38,466 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:49:38,466 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15, 12] total 24 [2022-02-10 02:49:38,466 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657662165] [2022-02-10 02:49:38,466 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:49:38,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-10 02:49:38,466 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:38,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-10 02:49:38,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=420, Unknown=0, NotChecked=0, Total=552 [2022-02-10 02:49:38,466 INFO L87 Difference]: Start difference. First operand 85603 states and 143770 transitions. Second operand has 24 states, 24 states have (on average 3.375) internal successors, (81), 24 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:40,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:40,508 INFO L93 Difference]: Finished difference Result 125686 states and 210817 transitions. [2022-02-10 02:49:40,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2022-02-10 02:49:40,509 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.375) internal successors, (81), 24 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2022-02-10 02:49:40,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:40,816 INFO L225 Difference]: With dead ends: 125686 [2022-02-10 02:49:40,816 INFO L226 Difference]: Without dead ends: 125682 [2022-02-10 02:49:40,817 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 80 SyntacticMatches, 1 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6057 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=4096, Invalid=10184, Unknown=0, NotChecked=0, Total=14280 [2022-02-10 02:49:40,817 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 319 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 836 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:40,817 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [319 Valid, 462 Invalid, 931 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 836 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:49:40,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125682 states. [2022-02-10 02:49:42,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125682 to 87326. [2022-02-10 02:49:42,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87326 states, 87325 states have (on average 1.6761408531348412) internal successors, (146369), 87325 states have internal predecessors, (146369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:42,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87326 states to 87326 states and 146369 transitions. [2022-02-10 02:49:42,874 INFO L78 Accepts]: Start accepts. Automaton has 87326 states and 146369 transitions. Word has length 45 [2022-02-10 02:49:42,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:42,874 INFO L470 AbstractCegarLoop]: Abstraction has 87326 states and 146369 transitions. [2022-02-10 02:49:42,875 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.375) internal successors, (81), 24 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:42,875 INFO L276 IsEmpty]: Start isEmpty. Operand 87326 states and 146369 transitions. [2022-02-10 02:49:42,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-02-10 02:49:42,927 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:42,927 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:42,950 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (139)] Ended with exit code 0 [2022-02-10 02:49:43,128 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142,139 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:43,128 INFO L402 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:49:43,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:43,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1618978844, now seen corresponding path program 139 times [2022-02-10 02:49:43,128 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:43,128 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785743455] [2022-02-10 02:49:43,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:43,129 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:43,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:43,177 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 30 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:43,177 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:43,177 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785743455] [2022-02-10 02:49:43,177 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785743455] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:49:43,177 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1385622337] [2022-02-10 02:49:43,177 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:49:43,177 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:43,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:49:43,178 INFO L229 MonitoredProcess]: Starting monitored process 140 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:49:43,179 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (140)] Waiting until timeout for monitored process [2022-02-10 02:49:43,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:43,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 02:49:43,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:49:43,393 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 35 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:43,393 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:49:43,461 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 30 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:43,461 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1385622337] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:49:43,461 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:49:43,461 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 15, 11] total 23 [2022-02-10 02:49:43,462 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057762397] [2022-02-10 02:49:43,462 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:49:43,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-10 02:49:43,462 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:43,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-10 02:49:43,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=373, Unknown=0, NotChecked=0, Total=506 [2022-02-10 02:49:43,462 INFO L87 Difference]: Start difference. First operand 87326 states and 146369 transitions. Second operand has 23 states, 23 states have (on average 3.5217391304347827) internal successors, (81), 23 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:46,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:46,111 INFO L93 Difference]: Finished difference Result 146330 states and 246259 transitions. [2022-02-10 02:49:46,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2022-02-10 02:49:46,111 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.5217391304347827) internal successors, (81), 23 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2022-02-10 02:49:46,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:46,456 INFO L225 Difference]: With dead ends: 146330 [2022-02-10 02:49:46,456 INFO L226 Difference]: Without dead ends: 146330 [2022-02-10 02:49:46,457 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 81 SyntacticMatches, 1 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10628 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=6549, Invalid=15801, Unknown=0, NotChecked=0, Total=22350 [2022-02-10 02:49:46,457 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 356 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 578 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 688 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:46,457 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [356 Valid, 340 Invalid, 688 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 578 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:49:46,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146330 states. [2022-02-10 02:49:48,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146330 to 113370. [2022-02-10 02:49:49,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113370 states, 113369 states have (on average 1.6787305171607758) internal successors, (190316), 113369 states have internal predecessors, (190316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:49,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113370 states to 113370 states and 190316 transitions. [2022-02-10 02:49:49,295 INFO L78 Accepts]: Start accepts. Automaton has 113370 states and 190316 transitions. Word has length 45 [2022-02-10 02:49:49,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:49,295 INFO L470 AbstractCegarLoop]: Abstraction has 113370 states and 190316 transitions. [2022-02-10 02:49:49,295 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.5217391304347827) internal successors, (81), 23 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:49,295 INFO L276 IsEmpty]: Start isEmpty. Operand 113370 states and 190316 transitions. [2022-02-10 02:49:49,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-02-10 02:49:49,348 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:49,348 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:49,363 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (140)] Forceful destruction successful, exit code 0 [2022-02-10 02:49:49,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 140 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable143 [2022-02-10 02:49:49,548 INFO L402 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:49:49,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:49,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1991789394, now seen corresponding path program 140 times [2022-02-10 02:49:49,549 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:49,549 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903310949] [2022-02-10 02:49:49,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:49,549 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:49,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:49,630 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 51 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:49,630 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:49,631 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903310949] [2022-02-10 02:49:49,631 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903310949] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:49:49,631 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [580195641] [2022-02-10 02:49:49,631 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:49:49,631 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:49,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:49:49,632 INFO L229 MonitoredProcess]: Starting monitored process 141 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:49:49,632 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (141)] Waiting until timeout for monitored process [2022-02-10 02:49:49,655 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:49:49,655 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:49:49,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 02:49:49,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:49:49,880 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 51 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:49,880 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:49:49,948 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 51 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:49,948 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [580195641] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:49:49,949 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:49:49,949 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 27 [2022-02-10 02:49:49,949 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548132702] [2022-02-10 02:49:49,949 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:49:49,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-10 02:49:49,949 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:49,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-10 02:49:49,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=537, Unknown=0, NotChecked=0, Total=702 [2022-02-10 02:49:49,950 INFO L87 Difference]: Start difference. First operand 113370 states and 190316 transitions. Second operand has 27 states, 27 states have (on average 2.888888888888889) internal successors, (78), 27 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:51,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:51,644 INFO L93 Difference]: Finished difference Result 151944 states and 255819 transitions. [2022-02-10 02:49:51,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-02-10 02:49:51,644 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.888888888888889) internal successors, (78), 27 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2022-02-10 02:49:51,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:52,032 INFO L225 Difference]: With dead ends: 151944 [2022-02-10 02:49:52,032 INFO L226 Difference]: Without dead ends: 151912 [2022-02-10 02:49:52,033 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 77 SyntacticMatches, 1 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2437 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1912, Invalid=5570, Unknown=0, NotChecked=0, Total=7482 [2022-02-10 02:49:52,033 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 265 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:52,033 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [265 Valid, 253 Invalid, 588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 502 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:49:52,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151912 states. [2022-02-10 02:49:54,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151912 to 115131. [2022-02-10 02:49:54,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115131 states, 115130 states have (on average 1.678059584817163) internal successors, (193195), 115130 states have internal predecessors, (193195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:55,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115131 states to 115131 states and 193195 transitions. [2022-02-10 02:49:55,381 INFO L78 Accepts]: Start accepts. Automaton has 115131 states and 193195 transitions. Word has length 45 [2022-02-10 02:49:55,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:55,382 INFO L470 AbstractCegarLoop]: Abstraction has 115131 states and 193195 transitions. [2022-02-10 02:49:55,382 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.888888888888889) internal successors, (78), 27 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:55,382 INFO L276 IsEmpty]: Start isEmpty. Operand 115131 states and 193195 transitions. [2022-02-10 02:49:55,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-10 02:49:55,471 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:55,472 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:55,488 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (141)] Forceful destruction successful, exit code 0 [2022-02-10 02:49:55,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 141 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable144 [2022-02-10 02:49:55,687 INFO L402 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:49:55,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:55,688 INFO L85 PathProgramCache]: Analyzing trace with hash -137842013, now seen corresponding path program 141 times [2022-02-10 02:49:55,688 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:55,688 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502389218] [2022-02-10 02:49:55,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:55,688 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:55,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:55,766 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:55,767 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:55,767 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502389218] [2022-02-10 02:49:55,767 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502389218] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:49:55,767 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [839955815] [2022-02-10 02:49:55,767 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:49:55,767 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:55,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:49:55,768 INFO L229 MonitoredProcess]: Starting monitored process 142 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:49:55,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (142)] Waiting until timeout for monitored process [2022-02-10 02:49:55,789 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-02-10 02:49:55,789 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:49:55,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 27 conjunts are in the unsatisfiable core [2022-02-10 02:49:55,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:49:55,918 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:55,919 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:49:56,050 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:56,050 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [839955815] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:49:56,050 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:49:56,051 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 7 [2022-02-10 02:49:56,051 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719855479] [2022-02-10 02:49:56,051 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:49:56,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-10 02:49:56,051 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:56,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-10 02:49:56,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-02-10 02:49:56,051 INFO L87 Difference]: Start difference. First operand 115131 states and 193195 transitions. Second operand has 9 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:56,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:56,885 INFO L93 Difference]: Finished difference Result 138001 states and 231939 transitions. [2022-02-10 02:49:56,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-10 02:49:56,886 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-02-10 02:49:56,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:57,215 INFO L225 Difference]: With dead ends: 138001 [2022-02-10 02:49:57,215 INFO L226 Difference]: Without dead ends: 137996 [2022-02-10 02:49:57,215 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 97 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-02-10 02:49:57,216 INFO L933 BasicCegarLoop]: 67 mSDtfsCounter, 51 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:57,216 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 462 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:49:57,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137996 states. [2022-02-10 02:49:59,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137996 to 127175. [2022-02-10 02:49:59,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127175 states, 127174 states have (on average 1.6819397046566122) internal successors, (213899), 127174 states have internal predecessors, (213899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:59,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127175 states to 127175 states and 213899 transitions. [2022-02-10 02:49:59,974 INFO L78 Accepts]: Start accepts. Automaton has 127175 states and 213899 transitions. Word has length 48 [2022-02-10 02:49:59,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:59,974 INFO L470 AbstractCegarLoop]: Abstraction has 127175 states and 213899 transitions. [2022-02-10 02:49:59,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:59,975 INFO L276 IsEmpty]: Start isEmpty. Operand 127175 states and 213899 transitions. [2022-02-10 02:50:00,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-10 02:50:00,059 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:50:00,059 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:50:00,074 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (142)] Ended with exit code 0 [2022-02-10 02:50:00,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145,142 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:00,259 INFO L402 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:50:00,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:50:00,260 INFO L85 PathProgramCache]: Analyzing trace with hash 269781283, now seen corresponding path program 142 times [2022-02-10 02:50:00,260 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:50:00,260 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188094073] [2022-02-10 02:50:00,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:50:00,260 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:50:00,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:50:00,337 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-02-10 02:50:00,337 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:50:00,337 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188094073] [2022-02-10 02:50:00,337 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188094073] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:50:00,337 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [425484562] [2022-02-10 02:50:00,337 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:50:00,337 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:00,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:50:00,338 INFO L229 MonitoredProcess]: Starting monitored process 143 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:50:00,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (143)] Waiting until timeout for monitored process [2022-02-10 02:50:00,362 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:50:00,362 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:50:00,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 27 conjunts are in the unsatisfiable core [2022-02-10 02:50:00,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:50:00,497 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-02-10 02:50:00,497 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:50:00,978 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-02-10 02:50:00,978 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [425484562] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:50:00,978 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:50:00,978 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 7 [2022-02-10 02:50:00,978 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358803195] [2022-02-10 02:50:00,978 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:50:00,979 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-10 02:50:00,979 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:50:00,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-10 02:50:00,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-02-10 02:50:00,979 INFO L87 Difference]: Start difference. First operand 127175 states and 213899 transitions. Second operand has 9 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:01,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:50:01,563 INFO L93 Difference]: Finished difference Result 146726 states and 246972 transitions. [2022-02-10 02:50:01,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-10 02:50:01,563 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-02-10 02:50:01,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:50:01,931 INFO L225 Difference]: With dead ends: 146726 [2022-02-10 02:50:01,931 INFO L226 Difference]: Without dead ends: 146704 [2022-02-10 02:50:01,931 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 97 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-02-10 02:50:01,931 INFO L933 BasicCegarLoop]: 67 mSDtfsCounter, 51 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:50:01,932 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 461 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:50:02,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146704 states. [2022-02-10 02:50:04,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146704 to 130108. [2022-02-10 02:50:04,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130108 states, 130107 states have (on average 1.6857125289185055) internal successors, (219323), 130107 states have internal predecessors, (219323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:05,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130108 states to 130108 states and 219323 transitions. [2022-02-10 02:50:05,246 INFO L78 Accepts]: Start accepts. Automaton has 130108 states and 219323 transitions. Word has length 48 [2022-02-10 02:50:05,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:50:05,246 INFO L470 AbstractCegarLoop]: Abstraction has 130108 states and 219323 transitions. [2022-02-10 02:50:05,246 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:05,246 INFO L276 IsEmpty]: Start isEmpty. Operand 130108 states and 219323 transitions. [2022-02-10 02:50:05,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-10 02:50:05,327 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:50:05,327 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:50:05,384 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (143)] Forceful destruction successful, exit code 0 [2022-02-10 02:50:05,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 143 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable146 [2022-02-10 02:50:05,528 INFO L402 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:50:05,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:50:05,528 INFO L85 PathProgramCache]: Analyzing trace with hash 605777209, now seen corresponding path program 143 times [2022-02-10 02:50:05,528 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:50:05,528 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006918107] [2022-02-10 02:50:05,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:50:05,529 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:50:05,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:50:05,602 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-02-10 02:50:05,602 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:50:05,602 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006918107] [2022-02-10 02:50:05,602 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006918107] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:50:05,602 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [627974318] [2022-02-10 02:50:05,602 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:50:05,602 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:05,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:50:05,603 INFO L229 MonitoredProcess]: Starting monitored process 144 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:50:05,604 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (144)] Waiting until timeout for monitored process [2022-02-10 02:50:05,627 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2022-02-10 02:50:05,627 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:50:05,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 27 conjunts are in the unsatisfiable core [2022-02-10 02:50:05,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:50:05,772 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-02-10 02:50:05,772 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:50:05,915 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-02-10 02:50:05,915 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [627974318] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:50:05,915 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:50:05,915 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 7 [2022-02-10 02:50:05,915 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43644053] [2022-02-10 02:50:05,915 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:50:05,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-10 02:50:05,916 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:50:05,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-10 02:50:05,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-02-10 02:50:05,916 INFO L87 Difference]: Start difference. First operand 130108 states and 219323 transitions. Second operand has 9 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:06,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:50:06,808 INFO L93 Difference]: Finished difference Result 154269 states and 259854 transitions. [2022-02-10 02:50:06,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-10 02:50:06,809 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-02-10 02:50:06,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:50:07,200 INFO L225 Difference]: With dead ends: 154269 [2022-02-10 02:50:07,200 INFO L226 Difference]: Without dead ends: 154244 [2022-02-10 02:50:07,200 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 97 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-02-10 02:50:07,200 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 50 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:50:07,200 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 454 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:50:07,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154244 states. [2022-02-10 02:50:10,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154244 to 141917. [2022-02-10 02:50:10,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141917 states, 141916 states have (on average 1.6869415710702105) internal successors, (239404), 141916 states have internal predecessors, (239404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:10,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141917 states to 141917 states and 239404 transitions. [2022-02-10 02:50:10,454 INFO L78 Accepts]: Start accepts. Automaton has 141917 states and 239404 transitions. Word has length 48 [2022-02-10 02:50:10,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:50:10,454 INFO L470 AbstractCegarLoop]: Abstraction has 141917 states and 239404 transitions. [2022-02-10 02:50:10,454 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:10,454 INFO L276 IsEmpty]: Start isEmpty. Operand 141917 states and 239404 transitions. [2022-02-10 02:50:10,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-10 02:50:10,537 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:50:10,538 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:50:10,554 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (144)] Ended with exit code 0 [2022-02-10 02:50:10,738 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 144 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable147 [2022-02-10 02:50:10,738 INFO L402 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:50:10,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:50:10,738 INFO L85 PathProgramCache]: Analyzing trace with hash -1308358301, now seen corresponding path program 144 times [2022-02-10 02:50:10,738 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:50:10,739 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903629935] [2022-02-10 02:50:10,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:50:10,739 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:50:10,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:50:10,805 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-02-10 02:50:10,805 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:50:10,805 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903629935] [2022-02-10 02:50:10,805 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903629935] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:50:10,805 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1704957864] [2022-02-10 02:50:10,805 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:50:10,805 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:10,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:50:10,806 INFO L229 MonitoredProcess]: Starting monitored process 145 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:50:10,807 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (145)] Waiting until timeout for monitored process [2022-02-10 02:50:10,833 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2022-02-10 02:50:10,833 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:50:10,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 27 conjunts are in the unsatisfiable core [2022-02-10 02:50:10,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:50:10,979 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-02-10 02:50:10,979 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:50:11,114 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-02-10 02:50:11,114 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1704957864] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:50:11,114 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:50:11,114 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 7 [2022-02-10 02:50:11,114 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3991915] [2022-02-10 02:50:11,114 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:50:11,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-10 02:50:11,114 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:50:11,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-10 02:50:11,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-02-10 02:50:11,115 INFO L87 Difference]: Start difference. First operand 141917 states and 239404 transitions. Second operand has 9 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:11,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:50:11,980 INFO L93 Difference]: Finished difference Result 159635 states and 268952 transitions. [2022-02-10 02:50:11,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-10 02:50:11,980 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-02-10 02:50:11,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:50:12,395 INFO L225 Difference]: With dead ends: 159635 [2022-02-10 02:50:12,396 INFO L226 Difference]: Without dead ends: 159611 [2022-02-10 02:50:12,396 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 97 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-02-10 02:50:12,396 INFO L933 BasicCegarLoop]: 65 mSDtfsCounter, 49 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:50:12,396 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 447 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:50:12,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159611 states. [2022-02-10 02:50:15,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159611 to 151913. [2022-02-10 02:50:15,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151913 states, 151912 states have (on average 1.6872004844910211) internal successors, (256306), 151912 states have internal predecessors, (256306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:16,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151913 states to 151913 states and 256306 transitions. [2022-02-10 02:50:16,225 INFO L78 Accepts]: Start accepts. Automaton has 151913 states and 256306 transitions. Word has length 48 [2022-02-10 02:50:16,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:50:16,225 INFO L470 AbstractCegarLoop]: Abstraction has 151913 states and 256306 transitions. [2022-02-10 02:50:16,225 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:16,225 INFO L276 IsEmpty]: Start isEmpty. Operand 151913 states and 256306 transitions. [2022-02-10 02:50:16,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-10 02:50:16,314 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:50:16,314 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:50:16,331 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (145)] Forceful destruction successful, exit code 0 [2022-02-10 02:50:16,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 145 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable148 [2022-02-10 02:50:16,515 INFO L402 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:50:16,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:50:16,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1038547719, now seen corresponding path program 145 times [2022-02-10 02:50:16,515 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:50:16,515 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776533604] [2022-02-10 02:50:16,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:50:16,515 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:50:16,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:50:16,585 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-02-10 02:50:16,585 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:50:16,585 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776533604] [2022-02-10 02:50:16,585 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776533604] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:50:16,585 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2039166256] [2022-02-10 02:50:16,586 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:50:16,586 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:16,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:50:16,587 INFO L229 MonitoredProcess]: Starting monitored process 146 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:50:16,587 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (146)] Waiting until timeout for monitored process [2022-02-10 02:50:16,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:50:16,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 27 conjunts are in the unsatisfiable core [2022-02-10 02:50:16,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:50:16,777 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-02-10 02:50:16,777 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:50:16,938 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-02-10 02:50:16,938 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2039166256] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:50:16,938 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:50:16,939 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 7 [2022-02-10 02:50:16,939 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314061100] [2022-02-10 02:50:16,939 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:50:16,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-10 02:50:16,939 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:50:16,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-10 02:50:16,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-02-10 02:50:16,939 INFO L87 Difference]: Start difference. First operand 151913 states and 256306 transitions. Second operand has 9 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:18,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:50:18,008 INFO L93 Difference]: Finished difference Result 162991 states and 274637 transitions. [2022-02-10 02:50:18,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-10 02:50:18,008 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-02-10 02:50:18,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:50:18,420 INFO L225 Difference]: With dead ends: 162991 [2022-02-10 02:50:18,420 INFO L226 Difference]: Without dead ends: 162968 [2022-02-10 02:50:18,420 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 97 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-02-10 02:50:18,421 INFO L933 BasicCegarLoop]: 64 mSDtfsCounter, 48 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:50:18,421 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 440 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:50:18,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162968 states. [2022-02-10 02:50:21,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162968 to 158581. [2022-02-10 02:50:21,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158581 states, 158580 states have (on average 1.687161054357422) internal successors, (267550), 158580 states have internal predecessors, (267550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:22,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158581 states to 158581 states and 267550 transitions. [2022-02-10 02:50:22,486 INFO L78 Accepts]: Start accepts. Automaton has 158581 states and 267550 transitions. Word has length 48 [2022-02-10 02:50:22,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:50:22,486 INFO L470 AbstractCegarLoop]: Abstraction has 158581 states and 267550 transitions. [2022-02-10 02:50:22,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:22,486 INFO L276 IsEmpty]: Start isEmpty. Operand 158581 states and 267550 transitions. [2022-02-10 02:50:22,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-10 02:50:22,572 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:50:22,572 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:50:22,588 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (146)] Forceful destruction successful, exit code 0 [2022-02-10 02:50:22,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149,146 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:22,773 INFO L402 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:50:22,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:50:22,774 INFO L85 PathProgramCache]: Analyzing trace with hash 1004689827, now seen corresponding path program 146 times [2022-02-10 02:50:22,774 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:50:22,774 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042678043] [2022-02-10 02:50:22,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:50:22,774 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:50:22,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:50:22,839 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-02-10 02:50:22,840 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:50:22,840 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042678043] [2022-02-10 02:50:22,840 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042678043] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:50:22,840 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1287516054] [2022-02-10 02:50:22,840 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:50:22,840 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:22,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:50:22,841 INFO L229 MonitoredProcess]: Starting monitored process 147 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:50:22,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (147)] Waiting until timeout for monitored process [2022-02-10 02:50:22,861 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:50:22,861 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:50:22,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 27 conjunts are in the unsatisfiable core [2022-02-10 02:50:22,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:50:22,986 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-02-10 02:50:22,986 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:50:23,113 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-02-10 02:50:23,113 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1287516054] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:50:23,113 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:50:23,113 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 7 [2022-02-10 02:50:23,113 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061191021] [2022-02-10 02:50:23,114 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:50:23,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-10 02:50:23,114 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:50:23,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-10 02:50:23,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-02-10 02:50:23,114 INFO L87 Difference]: Start difference. First operand 158581 states and 267550 transitions. Second operand has 9 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:24,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:50:24,048 INFO L93 Difference]: Finished difference Result 164858 states and 277795 transitions. [2022-02-10 02:50:24,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-10 02:50:24,049 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-02-10 02:50:24,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:50:24,459 INFO L225 Difference]: With dead ends: 164858 [2022-02-10 02:50:24,459 INFO L226 Difference]: Without dead ends: 164836 [2022-02-10 02:50:24,459 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 97 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-02-10 02:50:24,459 INFO L933 BasicCegarLoop]: 63 mSDtfsCounter, 47 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:50:24,459 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 434 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:50:24,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164836 states. [2022-02-10 02:50:27,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164836 to 162782. [2022-02-10 02:50:27,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162782 states, 162781 states have (on average 1.6868123429638595) internal successors, (274581), 162781 states have internal predecessors, (274581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:28,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162782 states to 162782 states and 274581 transitions. [2022-02-10 02:50:28,358 INFO L78 Accepts]: Start accepts. Automaton has 162782 states and 274581 transitions. Word has length 48 [2022-02-10 02:50:28,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:50:28,358 INFO L470 AbstractCegarLoop]: Abstraction has 162782 states and 274581 transitions. [2022-02-10 02:50:28,358 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:28,358 INFO L276 IsEmpty]: Start isEmpty. Operand 162782 states and 274581 transitions. [2022-02-10 02:50:28,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-10 02:50:28,456 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:50:28,456 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:50:28,472 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (147)] Ended with exit code 0 [2022-02-10 02:50:28,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150,147 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:28,656 INFO L402 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:50:28,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:50:28,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1477063495, now seen corresponding path program 147 times [2022-02-10 02:50:28,657 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:50:28,657 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253635263] [2022-02-10 02:50:28,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:50:28,657 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:50:28,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:50:28,721 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 02:50:28,721 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:50:28,722 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253635263] [2022-02-10 02:50:28,722 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253635263] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:50:28,722 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165911330] [2022-02-10 02:50:28,722 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:50:28,722 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:28,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:50:28,723 INFO L229 MonitoredProcess]: Starting monitored process 148 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:50:28,723 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (148)] Waiting until timeout for monitored process [2022-02-10 02:50:28,749 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-02-10 02:50:28,749 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:50:28,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 27 conjunts are in the unsatisfiable core [2022-02-10 02:50:28,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:50:28,877 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 02:50:28,877 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:50:29,004 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 02:50:29,005 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1165911330] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:50:29,005 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:50:29,005 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 7 [2022-02-10 02:50:29,005 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340011547] [2022-02-10 02:50:29,005 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:50:29,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-10 02:50:29,005 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:50:29,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-10 02:50:29,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-02-10 02:50:29,005 INFO L87 Difference]: Start difference. First operand 162782 states and 274581 transitions. Second operand has 9 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:29,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:50:29,987 INFO L93 Difference]: Finished difference Result 165645 states and 279114 transitions. [2022-02-10 02:50:29,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-10 02:50:29,988 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-02-10 02:50:29,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:50:30,433 INFO L225 Difference]: With dead ends: 165645 [2022-02-10 02:50:30,433 INFO L226 Difference]: Without dead ends: 165624 [2022-02-10 02:50:30,433 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 97 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-02-10 02:50:30,433 INFO L933 BasicCegarLoop]: 62 mSDtfsCounter, 45 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:50:30,434 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 431 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:50:30,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165624 states. [2022-02-10 02:50:33,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165624 to 165338. [2022-02-10 02:50:33,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165338 states, 165337 states have (on average 1.686089623012393) internal successors, (278773), 165337 states have internal predecessors, (278773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:34,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165338 states to 165338 states and 278773 transitions. [2022-02-10 02:50:34,507 INFO L78 Accepts]: Start accepts. Automaton has 165338 states and 278773 transitions. Word has length 48 [2022-02-10 02:50:34,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:50:34,507 INFO L470 AbstractCegarLoop]: Abstraction has 165338 states and 278773 transitions. [2022-02-10 02:50:34,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:34,507 INFO L276 IsEmpty]: Start isEmpty. Operand 165338 states and 278773 transitions. [2022-02-10 02:50:34,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-02-10 02:50:34,642 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:50:34,642 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:50:34,657 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (148)] Forceful destruction successful, exit code 0 [2022-02-10 02:50:34,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151,148 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:34,842 INFO L402 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:50:34,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:50:34,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1627189010, now seen corresponding path program 148 times [2022-02-10 02:50:34,842 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:50:34,843 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133827838] [2022-02-10 02:50:34,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:50:34,843 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:50:34,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:50:34,931 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 51 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:34,931 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:50:34,931 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133827838] [2022-02-10 02:50:34,932 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133827838] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:50:34,932 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1906177879] [2022-02-10 02:50:34,932 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:50:34,932 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:34,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:50:34,933 INFO L229 MonitoredProcess]: Starting monitored process 149 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:50:34,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (149)] Waiting until timeout for monitored process [2022-02-10 02:50:34,953 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:50:34,953 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:50:34,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 16 conjunts are in the unsatisfiable core [2022-02-10 02:50:34,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:50:35,123 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 51 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:35,123 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:50:35,207 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 51 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:35,207 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1906177879] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:50:35,207 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:50:35,207 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 24 [2022-02-10 02:50:35,207 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536624618] [2022-02-10 02:50:35,207 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:50:35,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-10 02:50:35,208 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:50:35,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-10 02:50:35,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=409, Unknown=0, NotChecked=0, Total=552 [2022-02-10 02:50:35,208 INFO L87 Difference]: Start difference. First operand 165338 states and 278773 transitions. Second operand has 24 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 24 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:36,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:50:36,557 INFO L93 Difference]: Finished difference Result 189116 states and 318805 transitions. [2022-02-10 02:50:36,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-02-10 02:50:36,557 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 24 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2022-02-10 02:50:36,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:50:37,043 INFO L225 Difference]: With dead ends: 189116 [2022-02-10 02:50:37,043 INFO L226 Difference]: Without dead ends: 189116 [2022-02-10 02:50:37,043 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 93 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=452, Invalid=1108, Unknown=0, NotChecked=0, Total=1560 [2022-02-10 02:50:37,043 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 124 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 755 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 755 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:50:37,043 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 436 Invalid, 782 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 755 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:50:37,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189116 states. [2022-02-10 02:50:40,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189116 to 166055. [2022-02-10 02:50:40,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166055 states, 166054 states have (on average 1.6859756464764475) internal successors, (279963), 166054 states have internal predecessors, (279963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:40,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166055 states to 166055 states and 279963 transitions. [2022-02-10 02:50:40,910 INFO L78 Accepts]: Start accepts. Automaton has 166055 states and 279963 transitions. Word has length 51 [2022-02-10 02:50:40,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:50:40,910 INFO L470 AbstractCegarLoop]: Abstraction has 166055 states and 279963 transitions. [2022-02-10 02:50:40,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 24 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:40,910 INFO L276 IsEmpty]: Start isEmpty. Operand 166055 states and 279963 transitions. [2022-02-10 02:50:41,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-02-10 02:50:41,029 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:50:41,030 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:50:41,053 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (149)] Ended with exit code 0 [2022-02-10 02:50:41,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152,149 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:41,230 INFO L402 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:50:41,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:50:41,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1051121326, now seen corresponding path program 149 times [2022-02-10 02:50:41,230 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:50:41,230 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209371813] [2022-02-10 02:50:41,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:50:41,231 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:50:41,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:50:41,327 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 70 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:41,327 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:50:41,328 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209371813] [2022-02-10 02:50:41,328 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209371813] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:50:41,328 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1947467893] [2022-02-10 02:50:41,328 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:50:41,328 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:41,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:50:41,329 INFO L229 MonitoredProcess]: Starting monitored process 150 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:50:41,329 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (150)] Waiting until timeout for monitored process [2022-02-10 02:50:41,350 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2022-02-10 02:50:41,350 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:50:41,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 16 conjunts are in the unsatisfiable core [2022-02-10 02:50:41,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:50:41,518 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 70 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:41,518 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:50:41,597 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 70 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:41,597 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1947467893] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:50:41,597 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:50:41,598 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 24 [2022-02-10 02:50:41,598 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463680878] [2022-02-10 02:50:41,598 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:50:41,598 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-10 02:50:41,598 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:50:41,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-10 02:50:41,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=409, Unknown=0, NotChecked=0, Total=552 [2022-02-10 02:50:41,598 INFO L87 Difference]: Start difference. First operand 166055 states and 279963 transitions. Second operand has 24 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 24 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:42,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:50:42,723 INFO L93 Difference]: Finished difference Result 183321 states and 305881 transitions. [2022-02-10 02:50:42,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-02-10 02:50:42,724 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 24 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2022-02-10 02:50:42,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:50:43,358 INFO L225 Difference]: With dead ends: 183321 [2022-02-10 02:50:43,359 INFO L226 Difference]: Without dead ends: 183300 [2022-02-10 02:50:43,359 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 94 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 312 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=386, Invalid=1174, Unknown=0, NotChecked=0, Total=1560 [2022-02-10 02:50:43,359 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 157 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:50:43,359 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [157 Valid, 171 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 02:50:43,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183300 states. [2022-02-10 02:50:46,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183300 to 166055. [2022-02-10 02:50:46,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166055 states, 166054 states have (on average 1.6859696243390705) internal successors, (279962), 166054 states have internal predecessors, (279962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:47,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166055 states to 166055 states and 279962 transitions. [2022-02-10 02:50:47,053 INFO L78 Accepts]: Start accepts. Automaton has 166055 states and 279962 transitions. Word has length 51 [2022-02-10 02:50:47,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:50:47,053 INFO L470 AbstractCegarLoop]: Abstraction has 166055 states and 279962 transitions. [2022-02-10 02:50:47,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 24 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:47,053 INFO L276 IsEmpty]: Start isEmpty. Operand 166055 states and 279962 transitions. [2022-02-10 02:50:47,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-02-10 02:50:47,172 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:50:47,172 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:50:47,196 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (150)] Ended with exit code 0 [2022-02-10 02:50:47,372 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153,150 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:47,373 INFO L402 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:50:47,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:50:47,373 INFO L85 PathProgramCache]: Analyzing trace with hash -990193424, now seen corresponding path program 150 times [2022-02-10 02:50:47,373 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:50:47,373 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485986146] [2022-02-10 02:50:47,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:50:47,373 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:50:47,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:50:47,866 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 45 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:47,866 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:50:47,866 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485986146] [2022-02-10 02:50:47,866 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485986146] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:50:47,867 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1721368767] [2022-02-10 02:50:47,867 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:50:47,867 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:47,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:50:47,868 INFO L229 MonitoredProcess]: Starting monitored process 151 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:50:47,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (151)] Waiting until timeout for monitored process [2022-02-10 02:50:47,891 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2022-02-10 02:50:47,891 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:50:47,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 16 conjunts are in the unsatisfiable core [2022-02-10 02:50:47,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:50:48,062 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 51 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:48,062 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:50:48,141 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 45 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:48,141 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1721368767] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:50:48,141 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:50:48,141 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 25 [2022-02-10 02:50:48,141 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706805845] [2022-02-10 02:50:48,141 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:50:48,142 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-10 02:50:48,142 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:50:48,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-10 02:50:48,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=454, Unknown=0, NotChecked=0, Total=600 [2022-02-10 02:50:48,142 INFO L87 Difference]: Start difference. First operand 166055 states and 279962 transitions. Second operand has 25 states, 25 states have (on average 3.04) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:49,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:50:49,454 INFO L93 Difference]: Finished difference Result 192224 states and 323112 transitions. [2022-02-10 02:50:49,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-02-10 02:50:49,454 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.04) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2022-02-10 02:50:49,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:50:49,921 INFO L225 Difference]: With dead ends: 192224 [2022-02-10 02:50:49,922 INFO L226 Difference]: Without dead ends: 192224 [2022-02-10 02:50:49,922 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 93 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 481 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=712, Invalid=1544, Unknown=0, NotChecked=0, Total=2256 [2022-02-10 02:50:49,922 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 223 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:50:49,922 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [223 Valid, 260 Invalid, 479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:50:50,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192224 states. [2022-02-10 02:50:53,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192224 to 166907. [2022-02-10 02:50:53,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166907 states, 166906 states have (on average 1.6860028998358358) internal successors, (281404), 166906 states have internal predecessors, (281404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:53,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166907 states to 166907 states and 281404 transitions. [2022-02-10 02:50:53,518 INFO L78 Accepts]: Start accepts. Automaton has 166907 states and 281404 transitions. Word has length 51 [2022-02-10 02:50:53,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:50:53,518 INFO L470 AbstractCegarLoop]: Abstraction has 166907 states and 281404 transitions. [2022-02-10 02:50:53,518 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.04) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:53,518 INFO L276 IsEmpty]: Start isEmpty. Operand 166907 states and 281404 transitions. [2022-02-10 02:50:54,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-02-10 02:50:54,168 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:50:54,168 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:50:54,196 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (151)] Forceful destruction successful, exit code 0 [2022-02-10 02:50:54,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154,151 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:54,383 INFO L402 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:50:54,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:50:54,384 INFO L85 PathProgramCache]: Analyzing trace with hash -880197010, now seen corresponding path program 151 times [2022-02-10 02:50:54,384 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:50:54,384 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472877488] [2022-02-10 02:50:54,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:50:54,384 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:50:54,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:50:54,561 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 64 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:54,562 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:50:54,562 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472877488] [2022-02-10 02:50:54,562 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472877488] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:50:54,562 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [58232063] [2022-02-10 02:50:54,562 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:50:54,562 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:54,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:50:54,563 INFO L229 MonitoredProcess]: Starting monitored process 152 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:50:54,567 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (152)] Waiting until timeout for monitored process [2022-02-10 02:50:54,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:50:54,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 16 conjunts are in the unsatisfiable core [2022-02-10 02:50:54,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:50:54,789 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 64 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:54,789 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:50:54,869 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 64 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:54,869 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [58232063] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:50:54,869 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:50:54,869 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 25 [2022-02-10 02:50:54,869 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150305251] [2022-02-10 02:50:54,869 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:50:54,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-10 02:50:54,870 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:50:54,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-10 02:50:54,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=460, Unknown=0, NotChecked=0, Total=600 [2022-02-10 02:50:54,870 INFO L87 Difference]: Start difference. First operand 166907 states and 281404 transitions. Second operand has 25 states, 25 states have (on average 2.92) internal successors, (73), 25 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:56,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:50:56,038 INFO L93 Difference]: Finished difference Result 184250 states and 307399 transitions. [2022-02-10 02:50:56,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-02-10 02:50:56,038 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.92) internal successors, (73), 25 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2022-02-10 02:50:56,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:50:56,496 INFO L225 Difference]: With dead ends: 184250 [2022-02-10 02:50:56,496 INFO L226 Difference]: Without dead ends: 184230 [2022-02-10 02:50:56,497 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 93 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 603 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=631, Invalid=2021, Unknown=0, NotChecked=0, Total=2652 [2022-02-10 02:50:56,497 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 268 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:50:56,497 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [268 Valid, 166 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:50:56,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184230 states. [2022-02-10 02:50:59,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184230 to 171914. [2022-02-10 02:50:59,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171914 states, 171913 states have (on average 1.6873476700424053) internal successors, (290077), 171913 states have internal predecessors, (290077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:00,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171914 states to 171914 states and 290077 transitions. [2022-02-10 02:51:00,548 INFO L78 Accepts]: Start accepts. Automaton has 171914 states and 290077 transitions. Word has length 51 [2022-02-10 02:51:00,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:51:00,548 INFO L470 AbstractCegarLoop]: Abstraction has 171914 states and 290077 transitions. [2022-02-10 02:51:00,548 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.92) internal successors, (73), 25 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:00,548 INFO L276 IsEmpty]: Start isEmpty. Operand 171914 states and 290077 transitions. [2022-02-10 02:51:00,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-02-10 02:51:00,676 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:51:00,676 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:51:00,691 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (152)] Forceful destruction successful, exit code 0 [2022-02-10 02:51:00,876 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 152 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable155 [2022-02-10 02:51:00,876 INFO L402 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:51:00,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:51:00,877 INFO L85 PathProgramCache]: Analyzing trace with hash 505305776, now seen corresponding path program 152 times [2022-02-10 02:51:00,877 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:51:00,877 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124670303] [2022-02-10 02:51:00,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:51:00,877 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:51:00,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:51:00,968 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 45 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:00,968 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:51:00,968 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124670303] [2022-02-10 02:51:00,968 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124670303] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:51:00,968 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1192580797] [2022-02-10 02:51:00,968 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:51:00,969 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:51:00,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:51:00,970 INFO L229 MonitoredProcess]: Starting monitored process 153 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:51:00,970 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (153)] Waiting until timeout for monitored process [2022-02-10 02:51:00,992 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:51:00,992 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:51:00,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 16 conjunts are in the unsatisfiable core [2022-02-10 02:51:00,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:51:01,178 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 51 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:01,179 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:51:01,260 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 45 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:01,261 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1192580797] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:51:01,261 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:51:01,261 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 25 [2022-02-10 02:51:01,261 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503204135] [2022-02-10 02:51:01,261 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:51:01,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-10 02:51:01,261 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:51:01,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-10 02:51:01,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=462, Unknown=0, NotChecked=0, Total=600 [2022-02-10 02:51:01,261 INFO L87 Difference]: Start difference. First operand 171914 states and 290077 transitions. Second operand has 25 states, 25 states have (on average 3.04) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:03,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:51:03,703 INFO L93 Difference]: Finished difference Result 218896 states and 368964 transitions. [2022-02-10 02:51:03,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2022-02-10 02:51:03,703 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.04) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2022-02-10 02:51:03,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:51:04,548 INFO L225 Difference]: With dead ends: 218896 [2022-02-10 02:51:04,548 INFO L226 Difference]: Without dead ends: 218896 [2022-02-10 02:51:04,548 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 93 SyntacticMatches, 1 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2517 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=2924, Invalid=6196, Unknown=0, NotChecked=0, Total=9120 [2022-02-10 02:51:04,549 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 180 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 883 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 502 SdHoareTripleChecker+Invalid, 934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 883 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:51:04,549 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [180 Valid, 502 Invalid, 934 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 883 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 02:51:04,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218896 states. [2022-02-10 02:51:07,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218896 to 174584. [2022-02-10 02:51:08,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174584 states, 174583 states have (on average 1.6871745817175785) internal successors, (294552), 174583 states have internal predecessors, (294552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:08,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174584 states to 174584 states and 294552 transitions. [2022-02-10 02:51:08,842 INFO L78 Accepts]: Start accepts. Automaton has 174584 states and 294552 transitions. Word has length 51 [2022-02-10 02:51:08,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:51:08,842 INFO L470 AbstractCegarLoop]: Abstraction has 174584 states and 294552 transitions. [2022-02-10 02:51:08,842 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.04) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:08,842 INFO L276 IsEmpty]: Start isEmpty. Operand 174584 states and 294552 transitions. [2022-02-10 02:51:08,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-02-10 02:51:08,987 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:51:08,987 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:51:09,004 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (153)] Ended with exit code 0 [2022-02-10 02:51:09,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 153 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable156 [2022-02-10 02:51:09,188 INFO L402 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:51:09,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:51:09,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1498508814, now seen corresponding path program 153 times [2022-02-10 02:51:09,188 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:51:09,188 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135581251] [2022-02-10 02:51:09,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:51:09,188 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:51:09,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:51:09,270 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 50 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:09,270 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:51:09,270 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135581251] [2022-02-10 02:51:09,270 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135581251] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:51:09,270 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [784577868] [2022-02-10 02:51:09,270 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:51:09,270 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:51:09,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:51:09,271 INFO L229 MonitoredProcess]: Starting monitored process 154 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:51:09,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (154)] Waiting until timeout for monitored process [2022-02-10 02:51:09,295 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-02-10 02:51:09,295 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:51:09,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 16 conjunts are in the unsatisfiable core [2022-02-10 02:51:09,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:51:09,478 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 50 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:09,479 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:51:09,567 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 50 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:09,567 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [784577868] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:51:09,567 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:51:09,567 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 25 [2022-02-10 02:51:09,567 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060743508] [2022-02-10 02:51:09,567 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:51:09,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-10 02:51:09,567 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:51:09,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-10 02:51:09,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=474, Unknown=0, NotChecked=0, Total=600 [2022-02-10 02:51:09,568 INFO L87 Difference]: Start difference. First operand 174584 states and 294552 transitions. Second operand has 25 states, 25 states have (on average 2.92) internal successors, (73), 25 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:11,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:51:11,310 INFO L93 Difference]: Finished difference Result 241910 states and 402261 transitions. [2022-02-10 02:51:11,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-02-10 02:51:11,311 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.92) internal successors, (73), 25 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2022-02-10 02:51:11,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:51:12,248 INFO L225 Difference]: With dead ends: 241910 [2022-02-10 02:51:12,248 INFO L226 Difference]: Without dead ends: 241877 [2022-02-10 02:51:12,249 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 93 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1013 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=863, Invalid=2919, Unknown=0, NotChecked=0, Total=3782 [2022-02-10 02:51:12,249 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 345 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 02:51:12,249 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [345 Valid, 223 Invalid, 489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 374 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 02:51:12,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241877 states. [2022-02-10 02:51:16,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241877 to 194803. [2022-02-10 02:51:17,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194803 states, 194802 states have (on average 1.6973131692693093) internal successors, (330640), 194802 states have internal predecessors, (330640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:17,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194803 states to 194803 states and 330640 transitions. [2022-02-10 02:51:17,507 INFO L78 Accepts]: Start accepts. Automaton has 194803 states and 330640 transitions. Word has length 51 [2022-02-10 02:51:17,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:51:17,507 INFO L470 AbstractCegarLoop]: Abstraction has 194803 states and 330640 transitions. [2022-02-10 02:51:17,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.92) internal successors, (73), 25 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:17,508 INFO L276 IsEmpty]: Start isEmpty. Operand 194803 states and 330640 transitions. [2022-02-10 02:51:18,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-02-10 02:51:18,039 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:51:18,039 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:51:18,062 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (154)] Forceful destruction successful, exit code 0 [2022-02-10 02:51:18,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 154 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable157 [2022-02-10 02:51:18,240 INFO L402 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:51:18,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:51:18,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1455436016, now seen corresponding path program 154 times [2022-02-10 02:51:18,240 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:51:18,240 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082674660] [2022-02-10 02:51:18,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:51:18,240 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:51:18,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:51:18,320 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 45 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:18,320 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:51:18,320 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082674660] [2022-02-10 02:51:18,321 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082674660] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:51:18,321 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1683043970] [2022-02-10 02:51:18,321 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:51:18,321 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:51:18,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:51:18,322 INFO L229 MonitoredProcess]: Starting monitored process 155 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:51:18,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (155)] Waiting until timeout for monitored process [2022-02-10 02:51:18,343 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:51:18,343 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:51:18,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 16 conjunts are in the unsatisfiable core [2022-02-10 02:51:18,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:51:18,508 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 51 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:18,508 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:51:18,580 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 45 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:18,580 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1683043970] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:51:18,580 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:51:18,580 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 25 [2022-02-10 02:51:18,580 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482897878] [2022-02-10 02:51:18,580 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:51:18,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-10 02:51:18,580 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:51:18,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-10 02:51:18,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=464, Unknown=0, NotChecked=0, Total=600 [2022-02-10 02:51:18,581 INFO L87 Difference]: Start difference. First operand 194803 states and 330640 transitions. Second operand has 25 states, 25 states have (on average 3.04) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:21,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:51:21,280 INFO L93 Difference]: Finished difference Result 251999 states and 425445 transitions. [2022-02-10 02:51:21,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2022-02-10 02:51:21,281 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.04) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2022-02-10 02:51:21,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:51:22,271 INFO L225 Difference]: With dead ends: 251999 [2022-02-10 02:51:22,271 INFO L226 Difference]: Without dead ends: 251999 [2022-02-10 02:51:22,271 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 93 SyntacticMatches, 1 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4199 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=4251, Invalid=9791, Unknown=0, NotChecked=0, Total=14042 [2022-02-10 02:51:22,272 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 223 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 796 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:51:22,272 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [223 Valid, 459 Invalid, 865 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 796 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:51:22,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251999 states. [2022-02-10 02:51:26,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251999 to 198239. [2022-02-10 02:51:26,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198239 states, 198238 states have (on average 1.697313330441187) internal successors, (336472), 198238 states have internal predecessors, (336472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:27,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198239 states to 198239 states and 336472 transitions. [2022-02-10 02:51:27,218 INFO L78 Accepts]: Start accepts. Automaton has 198239 states and 336472 transitions. Word has length 51 [2022-02-10 02:51:27,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:51:27,218 INFO L470 AbstractCegarLoop]: Abstraction has 198239 states and 336472 transitions. [2022-02-10 02:51:27,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.04) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:27,218 INFO L276 IsEmpty]: Start isEmpty. Operand 198239 states and 336472 transitions. [2022-02-10 02:51:27,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-02-10 02:51:27,352 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:51:27,353 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:51:27,368 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (155)] Forceful destruction successful, exit code 0 [2022-02-10 02:51:27,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158,155 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:51:27,554 INFO L402 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:51:27,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:51:27,554 INFO L85 PathProgramCache]: Analyzing trace with hash 1556287726, now seen corresponding path program 155 times [2022-02-10 02:51:27,554 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:51:27,554 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144325620] [2022-02-10 02:51:27,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:51:27,554 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:51:27,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:51:27,642 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 42 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:27,642 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:51:27,643 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144325620] [2022-02-10 02:51:27,643 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144325620] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:51:27,643 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [570594330] [2022-02-10 02:51:27,643 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:51:27,643 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:51:27,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:51:27,644 INFO L229 MonitoredProcess]: Starting monitored process 156 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:51:27,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (156)] Waiting until timeout for monitored process [2022-02-10 02:51:27,671 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-02-10 02:51:27,671 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:51:27,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 16 conjunts are in the unsatisfiable core [2022-02-10 02:51:27,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:51:27,851 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 42 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:27,851 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:51:27,923 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 42 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:27,923 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [570594330] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:51:27,923 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:51:27,923 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 25 [2022-02-10 02:51:27,924 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120324689] [2022-02-10 02:51:27,924 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:51:27,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-10 02:51:27,924 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:51:27,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-10 02:51:27,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=482, Unknown=0, NotChecked=0, Total=600 [2022-02-10 02:51:27,924 INFO L87 Difference]: Start difference. First operand 198239 states and 336472 transitions. Second operand has 25 states, 25 states have (on average 2.92) internal successors, (73), 25 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:29,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:51:29,688 INFO L93 Difference]: Finished difference Result 278738 states and 466333 transitions. [2022-02-10 02:51:29,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-02-10 02:51:29,689 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.92) internal successors, (73), 25 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2022-02-10 02:51:29,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:51:30,775 INFO L225 Difference]: With dead ends: 278738 [2022-02-10 02:51:30,775 INFO L226 Difference]: Without dead ends: 278698 [2022-02-10 02:51:30,775 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 93 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1164 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=953, Invalid=3207, Unknown=0, NotChecked=0, Total=4160 [2022-02-10 02:51:30,776 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 433 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 391 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 433 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:51:30,776 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [433 Valid, 229 Invalid, 529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 391 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:51:31,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278698 states. [2022-02-10 02:51:36,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278698 to 214422. [2022-02-10 02:51:36,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214422 states, 214421 states have (on average 1.6966808288367277) internal successors, (363804), 214421 states have internal predecessors, (363804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:37,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214422 states to 214422 states and 363804 transitions. [2022-02-10 02:51:37,398 INFO L78 Accepts]: Start accepts. Automaton has 214422 states and 363804 transitions. Word has length 51 [2022-02-10 02:51:37,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:51:37,398 INFO L470 AbstractCegarLoop]: Abstraction has 214422 states and 363804 transitions. [2022-02-10 02:51:37,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.92) internal successors, (73), 25 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:37,398 INFO L276 IsEmpty]: Start isEmpty. Operand 214422 states and 363804 transitions. [2022-02-10 02:51:37,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-02-10 02:51:37,959 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:51:37,959 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:51:37,995 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (156)] Forceful destruction successful, exit code 0 [2022-02-10 02:51:38,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159,156 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:51:38,159 INFO L402 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:51:38,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:51:38,160 INFO L85 PathProgramCache]: Analyzing trace with hash 706216624, now seen corresponding path program 156 times [2022-02-10 02:51:38,160 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:51:38,160 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840658994] [2022-02-10 02:51:38,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:51:38,161 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:51:38,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:51:38,272 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 45 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:38,272 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:51:38,272 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840658994] [2022-02-10 02:51:38,273 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840658994] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:51:38,273 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1403726648] [2022-02-10 02:51:38,273 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:51:38,273 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:51:38,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:51:38,296 INFO L229 MonitoredProcess]: Starting monitored process 157 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:51:38,350 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (157)] Waiting until timeout for monitored process [2022-02-10 02:51:38,355 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2022-02-10 02:51:38,355 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:51:38,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 16 conjunts are in the unsatisfiable core [2022-02-10 02:51:38,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:51:38,573 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 51 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:38,573 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:51:38,652 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 45 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:38,652 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1403726648] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:51:38,652 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:51:38,652 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 25 [2022-02-10 02:51:38,652 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779956376] [2022-02-10 02:51:38,652 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:51:38,653 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-10 02:51:38,653 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:51:38,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-10 02:51:38,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=460, Unknown=0, NotChecked=0, Total=600 [2022-02-10 02:51:38,653 INFO L87 Difference]: Start difference. First operand 214422 states and 363804 transitions. Second operand has 25 states, 25 states have (on average 3.04) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:41,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:51:41,812 INFO L93 Difference]: Finished difference Result 269683 states and 454584 transitions. [2022-02-10 02:51:41,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2022-02-10 02:51:41,812 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.04) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2022-02-10 02:51:41,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:51:42,857 INFO L225 Difference]: With dead ends: 269683 [2022-02-10 02:51:42,857 INFO L226 Difference]: Without dead ends: 269683 [2022-02-10 02:51:42,858 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 93 SyntacticMatches, 1 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5826 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=5447, Invalid=13185, Unknown=0, NotChecked=0, Total=18632 [2022-02-10 02:51:42,858 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 242 mSDsluCounter, 563 mSDsCounter, 0 mSdLazyCounter, 1099 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 574 SdHoareTripleChecker+Invalid, 1175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1099 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 02:51:42,858 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [242 Valid, 574 Invalid, 1175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1099 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 02:51:43,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269683 states. [2022-02-10 02:51:47,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269683 to 216278. [2022-02-10 02:51:47,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216278 states, 216277 states have (on average 1.6971060260684214) internal successors, (367045), 216277 states have internal predecessors, (367045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:48,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216278 states to 216278 states and 367045 transitions. [2022-02-10 02:51:48,661 INFO L78 Accepts]: Start accepts. Automaton has 216278 states and 367045 transitions. Word has length 51 [2022-02-10 02:51:48,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:51:48,661 INFO L470 AbstractCegarLoop]: Abstraction has 216278 states and 367045 transitions. [2022-02-10 02:51:48,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.04) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:48,661 INFO L276 IsEmpty]: Start isEmpty. Operand 216278 states and 367045 transitions. [2022-02-10 02:51:48,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-02-10 02:51:48,822 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:51:48,822 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:51:48,838 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (157)] Forceful destruction successful, exit code 0 [2022-02-10 02:51:49,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160,157 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:51:49,023 INFO L402 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:51:49,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:51:49,023 INFO L85 PathProgramCache]: Analyzing trace with hash -1813294222, now seen corresponding path program 157 times [2022-02-10 02:51:49,023 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:51:49,023 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155062004] [2022-02-10 02:51:49,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:51:49,023 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:51:49,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:51:49,104 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 40 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:49,104 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:51:49,104 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155062004] [2022-02-10 02:51:49,104 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155062004] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:51:49,104 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1609892280] [2022-02-10 02:51:49,104 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:51:49,104 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:51:49,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:51:49,105 INFO L229 MonitoredProcess]: Starting monitored process 158 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:51:49,106 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (158)] Waiting until timeout for monitored process [2022-02-10 02:51:49,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:51:49,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 16 conjunts are in the unsatisfiable core [2022-02-10 02:51:49,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:51:49,295 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 40 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:49,296 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:51:49,369 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 40 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:49,370 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1609892280] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:51:49,370 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:51:49,370 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 25 [2022-02-10 02:51:49,370 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217384184] [2022-02-10 02:51:49,370 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:51:49,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-10 02:51:49,370 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:51:49,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-10 02:51:49,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=484, Unknown=0, NotChecked=0, Total=600 [2022-02-10 02:51:49,371 INFO L87 Difference]: Start difference. First operand 216278 states and 367045 transitions. Second operand has 25 states, 25 states have (on average 2.92) internal successors, (73), 25 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:51,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:51:51,348 INFO L93 Difference]: Finished difference Result 282864 states and 473952 transitions. [2022-02-10 02:51:51,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-02-10 02:51:51,348 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.92) internal successors, (73), 25 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2022-02-10 02:51:51,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:51:52,509 INFO L225 Difference]: With dead ends: 282864 [2022-02-10 02:51:52,510 INFO L226 Difference]: Without dead ends: 282833 [2022-02-10 02:51:52,510 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 93 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1354 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1110, Invalid=3582, Unknown=0, NotChecked=0, Total=4692 [2022-02-10 02:51:52,510 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 307 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 511 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:51:52,510 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [307 Valid, 302 Invalid, 624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 511 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:51:52,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282833 states. [2022-02-10 02:51:57,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282833 to 224874. [2022-02-10 02:51:58,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224874 states, 224873 states have (on average 1.6949122393528793) internal successors, (381140), 224873 states have internal predecessors, (381140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:59,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224874 states to 224874 states and 381140 transitions. [2022-02-10 02:51:59,206 INFO L78 Accepts]: Start accepts. Automaton has 224874 states and 381140 transitions. Word has length 51 [2022-02-10 02:51:59,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:51:59,206 INFO L470 AbstractCegarLoop]: Abstraction has 224874 states and 381140 transitions. [2022-02-10 02:51:59,206 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.92) internal successors, (73), 25 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:59,206 INFO L276 IsEmpty]: Start isEmpty. Operand 224874 states and 381140 transitions. [2022-02-10 02:51:59,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-02-10 02:51:59,353 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:51:59,353 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:51:59,370 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (158)] Forceful destruction successful, exit code 0 [2022-02-10 02:51:59,554 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 158 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable161 [2022-02-10 02:51:59,554 INFO L402 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:51:59,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:51:59,555 INFO L85 PathProgramCache]: Analyzing trace with hash -1654159120, now seen corresponding path program 158 times [2022-02-10 02:51:59,555 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:51:59,555 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019858816] [2022-02-10 02:51:59,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:51:59,555 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:51:59,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:51:59,633 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 45 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:59,633 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:51:59,633 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019858816] [2022-02-10 02:51:59,634 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019858816] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:51:59,634 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1351459296] [2022-02-10 02:51:59,634 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:51:59,634 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:51:59,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:51:59,635 INFO L229 MonitoredProcess]: Starting monitored process 159 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:51:59,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (159)] Waiting until timeout for monitored process [2022-02-10 02:51:59,656 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:51:59,656 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:51:59,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 16 conjunts are in the unsatisfiable core [2022-02-10 02:51:59,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:51:59,846 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 51 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:59,846 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:51:59,925 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 45 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:59,925 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1351459296] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:51:59,925 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:51:59,925 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 25 [2022-02-10 02:51:59,925 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925524350] [2022-02-10 02:51:59,925 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:51:59,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-10 02:51:59,926 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:51:59,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-10 02:51:59,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=450, Unknown=0, NotChecked=0, Total=600 [2022-02-10 02:51:59,926 INFO L87 Difference]: Start difference. First operand 224874 states and 381140 transitions. Second operand has 25 states, 25 states have (on average 3.04) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:03,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:52:03,463 INFO L93 Difference]: Finished difference Result 275184 states and 463405 transitions. [2022-02-10 02:52:03,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2022-02-10 02:52:03,464 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.04) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2022-02-10 02:52:03,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:52:04,250 INFO L225 Difference]: With dead ends: 275184 [2022-02-10 02:52:04,250 INFO L226 Difference]: Without dead ends: 275184 [2022-02-10 02:52:04,251 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 93 SyntacticMatches, 1 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6764 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=6171, Invalid=14999, Unknown=0, NotChecked=0, Total=21170 [2022-02-10 02:52:04,251 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 255 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 894 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 504 SdHoareTripleChecker+Invalid, 979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 894 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-10 02:52:04,251 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [255 Valid, 504 Invalid, 979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 894 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-10 02:52:04,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275184 states. [2022-02-10 02:52:09,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275184 to 226634. [2022-02-10 02:52:09,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226634 states, 226633 states have (on average 1.695953369544594) internal successors, (384359), 226633 states have internal predecessors, (384359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:10,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226634 states to 226634 states and 384359 transitions. [2022-02-10 02:52:10,748 INFO L78 Accepts]: Start accepts. Automaton has 226634 states and 384359 transitions. Word has length 51 [2022-02-10 02:52:10,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:52:10,748 INFO L470 AbstractCegarLoop]: Abstraction has 226634 states and 384359 transitions. [2022-02-10 02:52:10,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.04) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:10,748 INFO L276 IsEmpty]: Start isEmpty. Operand 226634 states and 384359 transitions. [2022-02-10 02:52:10,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-02-10 02:52:10,900 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:52:10,900 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:52:10,916 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (159)] Ended with exit code 0 [2022-02-10 02:52:11,100 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162,159 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:52:11,100 INFO L402 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:52:11,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:52:11,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1759920274, now seen corresponding path program 159 times [2022-02-10 02:52:11,101 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:52:11,101 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565025906] [2022-02-10 02:52:11,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:52:11,101 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:52:11,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:52:11,181 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 44 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:52:11,181 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:52:11,181 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565025906] [2022-02-10 02:52:11,181 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565025906] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:52:11,181 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2092850235] [2022-02-10 02:52:11,181 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:52:11,181 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:52:11,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:52:11,182 INFO L229 MonitoredProcess]: Starting monitored process 160 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:52:11,182 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (160)] Waiting until timeout for monitored process [2022-02-10 02:52:11,204 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-02-10 02:52:11,204 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:52:11,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 16 conjunts are in the unsatisfiable core [2022-02-10 02:52:11,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:52:11,376 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 44 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:52:11,376 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:52:11,447 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 44 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:52:11,447 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2092850235] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:52:11,447 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:52:11,447 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 25 [2022-02-10 02:52:11,447 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454750601] [2022-02-10 02:52:11,447 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:52:11,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-10 02:52:11,448 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:52:11,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-10 02:52:11,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=480, Unknown=0, NotChecked=0, Total=600 [2022-02-10 02:52:11,448 INFO L87 Difference]: Start difference. First operand 226634 states and 384359 transitions. Second operand has 25 states, 25 states have (on average 2.92) internal successors, (73), 25 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:13,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:52:13,585 INFO L93 Difference]: Finished difference Result 269263 states and 451576 transitions. [2022-02-10 02:52:13,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-02-10 02:52:13,586 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.92) internal successors, (73), 25 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2022-02-10 02:52:13,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:52:14,646 INFO L225 Difference]: With dead ends: 269263 [2022-02-10 02:52:14,647 INFO L226 Difference]: Without dead ends: 269241 [2022-02-10 02:52:14,647 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 93 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1534 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1310, Invalid=3946, Unknown=0, NotChecked=0, Total=5256 [2022-02-10 02:52:14,647 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 432 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 482 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 432 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:52:14,647 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [432 Valid, 290 Invalid, 606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 482 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:52:14,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269241 states. [2022-02-10 02:52:19,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269241 to 231510. [2022-02-10 02:52:20,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231510 states, 231509 states have (on average 1.6940118958658195) internal successors, (392179), 231509 states have internal predecessors, (392179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:21,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231510 states to 231510 states and 392179 transitions. [2022-02-10 02:52:21,141 INFO L78 Accepts]: Start accepts. Automaton has 231510 states and 392179 transitions. Word has length 51 [2022-02-10 02:52:21,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:52:21,141 INFO L470 AbstractCegarLoop]: Abstraction has 231510 states and 392179 transitions. [2022-02-10 02:52:21,141 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.92) internal successors, (73), 25 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:21,141 INFO L276 IsEmpty]: Start isEmpty. Operand 231510 states and 392179 transitions. [2022-02-10 02:52:21,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-02-10 02:52:21,276 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:52:21,276 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:52:21,292 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (160)] Forceful destruction successful, exit code 0 [2022-02-10 02:52:21,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163,160 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:52:21,476 INFO L402 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:52:21,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:52:21,477 INFO L85 PathProgramCache]: Analyzing trace with hash 2087692976, now seen corresponding path program 160 times [2022-02-10 02:52:21,477 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:52:21,477 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260982843] [2022-02-10 02:52:21,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:52:21,477 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:52:21,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:52:21,557 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 45 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:52:21,557 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:52:21,557 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260982843] [2022-02-10 02:52:21,557 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260982843] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:52:21,557 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [14902896] [2022-02-10 02:52:21,557 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:52:21,557 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:52:21,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:52:21,558 INFO L229 MonitoredProcess]: Starting monitored process 161 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:52:21,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (161)] Waiting until timeout for monitored process [2022-02-10 02:52:21,580 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:52:21,580 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:52:21,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 16 conjunts are in the unsatisfiable core [2022-02-10 02:52:21,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:52:21,751 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 51 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:52:21,751 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:52:21,821 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 45 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:52:21,821 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [14902896] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:52:21,821 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:52:21,821 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 25 [2022-02-10 02:52:21,821 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412363390] [2022-02-10 02:52:21,821 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:52:21,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-10 02:52:21,821 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:52:21,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-10 02:52:21,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=434, Unknown=0, NotChecked=0, Total=600 [2022-02-10 02:52:21,822 INFO L87 Difference]: Start difference. First operand 231510 states and 392179 transitions. Second operand has 25 states, 25 states have (on average 3.04) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:25,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:52:25,283 INFO L93 Difference]: Finished difference Result 279049 states and 471047 transitions. [2022-02-10 02:52:25,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2022-02-10 02:52:25,284 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.04) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2022-02-10 02:52:25,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:52:26,094 INFO L225 Difference]: With dead ends: 279049 [2022-02-10 02:52:26,094 INFO L226 Difference]: Without dead ends: 279049 [2022-02-10 02:52:26,095 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 93 SyntacticMatches, 1 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6485 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=6164, Invalid=14142, Unknown=0, NotChecked=0, Total=20306 [2022-02-10 02:52:26,095 INFO L933 BasicCegarLoop]: 70 mSDtfsCounter, 293 mSDsluCounter, 688 mSDsCounter, 0 mSdLazyCounter, 1185 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 1271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 02:52:26,095 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [293 Valid, 647 Invalid, 1271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1185 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 02:52:26,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279049 states. [2022-02-10 02:52:31,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279049 to 231284. [2022-02-10 02:52:31,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231284 states, 231283 states have (on average 1.6947505869432686) internal successors, (391967), 231283 states have internal predecessors, (391967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:32,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231284 states to 231284 states and 391967 transitions. [2022-02-10 02:52:32,533 INFO L78 Accepts]: Start accepts. Automaton has 231284 states and 391967 transitions. Word has length 51 [2022-02-10 02:52:32,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:52:32,534 INFO L470 AbstractCegarLoop]: Abstraction has 231284 states and 391967 transitions. [2022-02-10 02:52:32,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.04) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:32,534 INFO L276 IsEmpty]: Start isEmpty. Operand 231284 states and 391967 transitions. [2022-02-10 02:52:32,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-02-10 02:52:32,684 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:52:32,684 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:52:32,704 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (161)] Forceful destruction successful, exit code 0 [2022-02-10 02:52:32,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164,161 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:52:32,886 INFO L402 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:52:32,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:52:32,886 INFO L85 PathProgramCache]: Analyzing trace with hash 1480013042, now seen corresponding path program 161 times [2022-02-10 02:52:32,886 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:52:32,886 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717709203] [2022-02-10 02:52:32,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:52:32,887 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:52:32,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:52:32,975 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 54 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:52:32,975 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:52:32,975 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717709203] [2022-02-10 02:52:32,976 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717709203] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:52:32,976 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1098938331] [2022-02-10 02:52:32,976 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:52:32,976 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:52:32,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:52:32,977 INFO L229 MonitoredProcess]: Starting monitored process 162 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:52:32,977 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (162)] Waiting until timeout for monitored process [2022-02-10 02:52:32,999 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-02-10 02:52:32,999 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:52:33,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 16 conjunts are in the unsatisfiable core [2022-02-10 02:52:33,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:52:33,178 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 54 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:52:33,178 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:52:33,250 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 54 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:52:33,250 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1098938331] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:52:33,250 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:52:33,251 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 25 [2022-02-10 02:52:33,251 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197263199] [2022-02-10 02:52:33,251 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:52:33,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-10 02:52:33,251 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:52:33,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-10 02:52:33,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=470, Unknown=0, NotChecked=0, Total=600 [2022-02-10 02:52:33,251 INFO L87 Difference]: Start difference. First operand 231284 states and 391967 transitions. Second operand has 25 states, 25 states have (on average 2.92) internal successors, (73), 25 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:35,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:52:35,515 INFO L93 Difference]: Finished difference Result 257534 states and 432127 transitions. [2022-02-10 02:52:35,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-02-10 02:52:35,515 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.92) internal successors, (73), 25 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2022-02-10 02:52:35,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:52:36,244 INFO L225 Difference]: With dead ends: 257534 [2022-02-10 02:52:36,244 INFO L226 Difference]: Without dead ends: 257521 [2022-02-10 02:52:36,244 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 93 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1708 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1552, Invalid=4300, Unknown=0, NotChecked=0, Total=5852 [2022-02-10 02:52:36,244 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 359 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 593 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:52:36,244 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [359 Valid, 355 Invalid, 720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 593 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:52:36,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257521 states. [2022-02-10 02:52:41,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257521 to 232466. [2022-02-10 02:52:41,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232466 states, 232465 states have (on average 1.6923881014346245) internal successors, (393421), 232465 states have internal predecessors, (393421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:42,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232466 states to 232466 states and 393421 transitions. [2022-02-10 02:52:42,458 INFO L78 Accepts]: Start accepts. Automaton has 232466 states and 393421 transitions. Word has length 51 [2022-02-10 02:52:42,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:52:42,459 INFO L470 AbstractCegarLoop]: Abstraction has 232466 states and 393421 transitions. [2022-02-10 02:52:42,459 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.92) internal successors, (73), 25 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:42,459 INFO L276 IsEmpty]: Start isEmpty. Operand 232466 states and 393421 transitions. [2022-02-10 02:52:42,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-02-10 02:52:42,601 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:52:42,601 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:52:42,618 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (162)] Ended with exit code 0 [2022-02-10 02:52:42,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165,162 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:52:42,801 INFO L402 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:52:42,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:52:42,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1236618734, now seen corresponding path program 162 times [2022-02-10 02:52:42,802 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:52:42,802 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363912239] [2022-02-10 02:52:42,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:52:42,802 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:52:42,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:52:42,907 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 70 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:52:42,908 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:52:42,908 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363912239] [2022-02-10 02:52:42,908 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363912239] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:52:42,908 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [360732684] [2022-02-10 02:52:42,908 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:52:42,908 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:52:42,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:52:42,920 INFO L229 MonitoredProcess]: Starting monitored process 163 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:52:42,921 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (163)] Waiting until timeout for monitored process [2022-02-10 02:52:42,944 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2022-02-10 02:52:42,944 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:52:42,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 16 conjunts are in the unsatisfiable core [2022-02-10 02:52:42,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:52:43,141 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 70 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:52:43,141 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:52:43,216 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 70 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:52:43,216 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [360732684] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:52:43,216 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:52:43,216 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 25 [2022-02-10 02:52:43,216 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823341123] [2022-02-10 02:52:43,217 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:52:43,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-10 02:52:43,217 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:52:43,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-10 02:52:43,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=453, Unknown=0, NotChecked=0, Total=600 [2022-02-10 02:52:43,217 INFO L87 Difference]: Start difference. First operand 232466 states and 393421 transitions. Second operand has 25 states, 25 states have (on average 2.88) internal successors, (72), 25 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:46,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:52:46,205 INFO L93 Difference]: Finished difference Result 254381 states and 425056 transitions. [2022-02-10 02:52:46,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2022-02-10 02:52:46,206 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.88) internal successors, (72), 25 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2022-02-10 02:52:46,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:52:46,929 INFO L225 Difference]: With dead ends: 254381 [2022-02-10 02:52:46,929 INFO L226 Difference]: Without dead ends: 254367 [2022-02-10 02:52:46,930 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 93 SyntacticMatches, 1 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6463 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=4455, Invalid=12575, Unknown=0, NotChecked=0, Total=17030 [2022-02-10 02:52:46,930 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 504 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 671 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 504 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 834 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 671 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:52:46,930 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [504 Valid, 365 Invalid, 834 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 671 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 02:52:47,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254367 states. [2022-02-10 02:52:51,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254367 to 213424. [2022-02-10 02:52:52,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213424 states, 213423 states have (on average 1.6861678450776159) internal successors, (359867), 213423 states have internal predecessors, (359867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:53,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213424 states to 213424 states and 359867 transitions. [2022-02-10 02:52:53,227 INFO L78 Accepts]: Start accepts. Automaton has 213424 states and 359867 transitions. Word has length 51 [2022-02-10 02:52:53,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:52:53,227 INFO L470 AbstractCegarLoop]: Abstraction has 213424 states and 359867 transitions. [2022-02-10 02:52:53,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.88) internal successors, (72), 25 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:53,227 INFO L276 IsEmpty]: Start isEmpty. Operand 213424 states and 359867 transitions. [2022-02-10 02:52:53,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-02-10 02:52:53,378 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:52:53,379 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:52:53,408 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (163)] Forceful destruction successful, exit code 0 [2022-02-10 02:52:53,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 163 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable166 [2022-02-10 02:52:53,596 INFO L402 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:52:53,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:52:53,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1588345486, now seen corresponding path program 163 times [2022-02-10 02:52:53,596 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:52:53,596 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368730029] [2022-02-10 02:52:53,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:52:53,596 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:52:53,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:52:53,703 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 64 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:52:53,703 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:52:53,703 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368730029] [2022-02-10 02:52:53,703 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368730029] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:52:53,703 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1765017842] [2022-02-10 02:52:53,703 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:52:53,703 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:52:53,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:52:53,708 INFO L229 MonitoredProcess]: Starting monitored process 164 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:52:53,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (164)] Waiting until timeout for monitored process [2022-02-10 02:52:53,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:52:53,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 16 conjunts are in the unsatisfiable core [2022-02-10 02:52:53,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:52:53,938 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 70 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:52:53,938 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:52:54,019 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 64 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:52:54,020 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1765017842] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:52:54,020 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:52:54,020 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 25 [2022-02-10 02:52:54,020 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715760978] [2022-02-10 02:52:54,020 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:52:54,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-10 02:52:54,020 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:52:54,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-10 02:52:54,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=405, Unknown=0, NotChecked=0, Total=600 [2022-02-10 02:52:54,021 INFO L87 Difference]: Start difference. First operand 213424 states and 359867 transitions. Second operand has 25 states, 25 states have (on average 2.88) internal successors, (72), 25 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:56,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:52:56,544 INFO L93 Difference]: Finished difference Result 233606 states and 393615 transitions. [2022-02-10 02:52:56,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2022-02-10 02:52:56,545 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.88) internal successors, (72), 25 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2022-02-10 02:52:56,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:52:57,466 INFO L225 Difference]: With dead ends: 233606 [2022-02-10 02:52:57,466 INFO L226 Difference]: Without dead ends: 233604 [2022-02-10 02:52:57,467 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 93 SyntacticMatches, 1 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3421 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=4219, Invalid=7991, Unknown=0, NotChecked=0, Total=12210 [2022-02-10 02:52:57,467 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 288 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 774 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:52:57,467 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [288 Valid, 429 Invalid, 832 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 774 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 02:52:57,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233604 states. [2022-02-10 02:53:01,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233604 to 210011. [2022-02-10 02:53:01,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210011 states, 210010 states have (on average 1.6856197323936954) internal successors, (353997), 210010 states have internal predecessors, (353997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:53:02,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210011 states to 210011 states and 353997 transitions. [2022-02-10 02:53:02,561 INFO L78 Accepts]: Start accepts. Automaton has 210011 states and 353997 transitions. Word has length 51 [2022-02-10 02:53:02,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:53:02,561 INFO L470 AbstractCegarLoop]: Abstraction has 210011 states and 353997 transitions. [2022-02-10 02:53:02,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.88) internal successors, (72), 25 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:53:02,562 INFO L276 IsEmpty]: Start isEmpty. Operand 210011 states and 353997 transitions. [2022-02-10 02:53:02,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-02-10 02:53:02,678 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:53:02,678 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:53:02,694 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (164)] Forceful destruction successful, exit code 0 [2022-02-10 02:53:02,878 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167,164 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:53:02,878 INFO L402 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:53:02,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:53:02,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1441788092, now seen corresponding path program 164 times [2022-02-10 02:53:02,879 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:53:02,879 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599757035] [2022-02-10 02:53:02,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:53:02,879 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:53:02,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:53:02,963 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 35 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:53:02,963 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:53:02,963 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599757035] [2022-02-10 02:53:02,963 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599757035] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:53:02,963 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [390473219] [2022-02-10 02:53:02,963 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:53:02,963 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:53:02,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:53:02,964 INFO L229 MonitoredProcess]: Starting monitored process 165 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:53:02,964 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (165)] Waiting until timeout for monitored process [2022-02-10 02:53:02,985 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:53:02,986 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:53:02,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 16 conjunts are in the unsatisfiable core [2022-02-10 02:53:02,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:53:03,177 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 51 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:53:03,177 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:53:03,257 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 35 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:53:03,257 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [390473219] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:53:03,258 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:53:03,258 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 26 [2022-02-10 02:53:03,258 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821728423] [2022-02-10 02:53:03,258 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:53:03,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-10 02:53:03,258 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:53:03,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-10 02:53:03,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=499, Unknown=0, NotChecked=0, Total=650 [2022-02-10 02:53:03,258 INFO L87 Difference]: Start difference. First operand 210011 states and 353997 transitions. Second operand has 26 states, 26 states have (on average 3.0) internal successors, (78), 26 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:53:05,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:53:05,421 INFO L93 Difference]: Finished difference Result 252209 states and 425348 transitions. [2022-02-10 02:53:05,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-02-10 02:53:05,421 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.0) internal successors, (78), 26 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2022-02-10 02:53:05,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:53:06,430 INFO L225 Difference]: With dead ends: 252209 [2022-02-10 02:53:06,430 INFO L226 Difference]: Without dead ends: 252141 [2022-02-10 02:53:06,431 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 92 SyntacticMatches, 1 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1920 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=2261, Invalid=4879, Unknown=0, NotChecked=0, Total=7140 [2022-02-10 02:53:06,431 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 172 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 558 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 02:53:06,431 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [172 Valid, 349 Invalid, 607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 558 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 02:53:06,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252141 states. [2022-02-10 02:53:10,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252141 to 210301. [2022-02-10 02:53:10,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210301 states, 210300 states have (on average 1.6854921540656205) internal successors, (354459), 210300 states have internal predecessors, (354459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:53:11,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210301 states to 210301 states and 354459 transitions. [2022-02-10 02:53:11,625 INFO L78 Accepts]: Start accepts. Automaton has 210301 states and 354459 transitions. Word has length 51 [2022-02-10 02:53:11,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:53:11,625 INFO L470 AbstractCegarLoop]: Abstraction has 210301 states and 354459 transitions. [2022-02-10 02:53:11,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.0) internal successors, (78), 26 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:53:11,625 INFO L276 IsEmpty]: Start isEmpty. Operand 210301 states and 354459 transitions. [2022-02-10 02:53:11,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-02-10 02:53:11,769 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:53:11,769 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:53:11,786 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (165)] Ended with exit code 0 [2022-02-10 02:53:11,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 165 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable168 [2022-02-10 02:53:11,970 INFO L402 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:53:11,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:53:11,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1222985560, now seen corresponding path program 165 times [2022-02-10 02:53:11,970 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:53:11,970 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817405864] [2022-02-10 02:53:11,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:53:11,970 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:53:11,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:53:12,056 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 35 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:53:12,056 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:53:12,056 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817405864] [2022-02-10 02:53:12,056 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817405864] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:53:12,057 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1041364966] [2022-02-10 02:53:12,057 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:53:12,057 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:53:12,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:53:12,058 INFO L229 MonitoredProcess]: Starting monitored process 166 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:53:12,058 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (166)] Waiting until timeout for monitored process [2022-02-10 02:53:12,080 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-02-10 02:53:12,081 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:53:12,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 16 conjunts are in the unsatisfiable core [2022-02-10 02:53:12,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:53:12,264 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 51 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:53:12,264 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:53:12,340 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 35 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:53:12,340 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1041364966] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:53:12,340 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:53:12,340 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17, 16] total 25 [2022-02-10 02:53:12,340 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710977041] [2022-02-10 02:53:12,340 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:53:12,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-10 02:53:12,340 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:53:12,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-10 02:53:12,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=461, Unknown=0, NotChecked=0, Total=600 [2022-02-10 02:53:12,341 INFO L87 Difference]: Start difference. First operand 210301 states and 354459 transitions. Second operand has 25 states, 25 states have (on average 3.12) internal successors, (78), 25 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:53:14,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:53:14,808 INFO L93 Difference]: Finished difference Result 256450 states and 431935 transitions. [2022-02-10 02:53:14,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-02-10 02:53:14,808 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.12) internal successors, (78), 25 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2022-02-10 02:53:14,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:53:15,537 INFO L225 Difference]: With dead ends: 256450 [2022-02-10 02:53:15,537 INFO L226 Difference]: Without dead ends: 256401 [2022-02-10 02:53:15,538 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 93 SyntacticMatches, 1 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1971 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2219, Invalid=5091, Unknown=0, NotChecked=0, Total=7310 [2022-02-10 02:53:15,538 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 181 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 939 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 984 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 939 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:53:15,538 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [181 Valid, 479 Invalid, 984 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 939 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:53:16,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256401 states. [2022-02-10 02:53:19,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256401 to 210541. [2022-02-10 02:53:20,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210541 states, 210540 states have (on average 1.6856844305120167) internal successors, (354904), 210540 states have internal predecessors, (354904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:53:20,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210541 states to 210541 states and 354904 transitions. [2022-02-10 02:53:20,730 INFO L78 Accepts]: Start accepts. Automaton has 210541 states and 354904 transitions. Word has length 51 [2022-02-10 02:53:20,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:53:20,730 INFO L470 AbstractCegarLoop]: Abstraction has 210541 states and 354904 transitions. [2022-02-10 02:53:20,730 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.12) internal successors, (78), 25 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:53:20,730 INFO L276 IsEmpty]: Start isEmpty. Operand 210541 states and 354904 transitions. [2022-02-10 02:53:21,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-02-10 02:53:21,279 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:53:21,279 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:53:21,300 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (166)] Ended with exit code 0 [2022-02-10 02:53:21,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 166 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable169 [2022-02-10 02:53:21,479 INFO L402 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:53:21,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:53:21,480 INFO L85 PathProgramCache]: Analyzing trace with hash -699738052, now seen corresponding path program 166 times [2022-02-10 02:53:21,480 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:53:21,480 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520720738] [2022-02-10 02:53:21,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:53:21,480 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:53:21,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:53:21,570 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 35 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:53:21,570 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:53:21,570 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520720738] [2022-02-10 02:53:21,570 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520720738] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:53:21,570 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1243299130] [2022-02-10 02:53:21,570 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:53:21,570 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:53:21,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:53:21,571 INFO L229 MonitoredProcess]: Starting monitored process 167 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:53:21,572 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (167)] Waiting until timeout for monitored process [2022-02-10 02:53:21,594 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:53:21,594 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:53:21,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 16 conjunts are in the unsatisfiable core [2022-02-10 02:53:21,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:53:21,803 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 51 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:53:21,803 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:53:21,874 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 35 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:53:21,874 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1243299130] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:53:21,874 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:53:21,874 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17, 16] total 25 [2022-02-10 02:53:21,875 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819625475] [2022-02-10 02:53:21,875 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:53:21,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-10 02:53:21,875 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:53:21,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-10 02:53:21,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=464, Unknown=0, NotChecked=0, Total=600 [2022-02-10 02:53:21,876 INFO L87 Difference]: Start difference. First operand 210541 states and 354904 transitions. Second operand has 25 states, 25 states have (on average 3.12) internal successors, (78), 25 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:53:24,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:53:24,654 INFO L93 Difference]: Finished difference Result 260054 states and 436888 transitions. [2022-02-10 02:53:24,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2022-02-10 02:53:24,654 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.12) internal successors, (78), 25 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2022-02-10 02:53:24,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:53:25,576 INFO L225 Difference]: With dead ends: 260054 [2022-02-10 02:53:25,576 INFO L226 Difference]: Without dead ends: 260009 [2022-02-10 02:53:25,576 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 93 SyntacticMatches, 1 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4000 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=3893, Invalid=9447, Unknown=0, NotChecked=0, Total=13340 [2022-02-10 02:53:25,577 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 227 mSDsluCounter, 438 mSDsCounter, 0 mSdLazyCounter, 847 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 847 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:53:25,577 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [227 Valid, 473 Invalid, 920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 847 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:53:26,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260009 states. [2022-02-10 02:53:29,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260009 to 211845. [2022-02-10 02:53:30,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211845 states, 211844 states have (on average 1.6859670323445555) internal successors, (357162), 211844 states have internal predecessors, (357162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:53:30,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211845 states to 211845 states and 357162 transitions. [2022-02-10 02:53:30,997 INFO L78 Accepts]: Start accepts. Automaton has 211845 states and 357162 transitions. Word has length 51 [2022-02-10 02:53:30,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:53:30,997 INFO L470 AbstractCegarLoop]: Abstraction has 211845 states and 357162 transitions. [2022-02-10 02:53:30,997 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.12) internal successors, (78), 25 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:53:30,997 INFO L276 IsEmpty]: Start isEmpty. Operand 211845 states and 357162 transitions. [2022-02-10 02:53:31,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-02-10 02:53:31,127 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:53:31,127 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:53:31,143 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (167)] Forceful destruction successful, exit code 0 [2022-02-10 02:53:31,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170,167 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:53:31,328 INFO L402 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:53:31,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:53:31,329 INFO L85 PathProgramCache]: Analyzing trace with hash 24445224, now seen corresponding path program 167 times [2022-02-10 02:53:31,329 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:53:31,329 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838555204] [2022-02-10 02:53:31,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:53:31,329 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:53:31,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:53:31,407 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 35 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:53:31,408 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:53:31,408 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838555204] [2022-02-10 02:53:31,408 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838555204] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:53:31,408 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372003216] [2022-02-10 02:53:31,408 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:53:31,408 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:53:31,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:53:31,409 INFO L229 MonitoredProcess]: Starting monitored process 168 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:53:31,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (168)] Waiting until timeout for monitored process [2022-02-10 02:53:31,433 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2022-02-10 02:53:31,433 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:53:31,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 16 conjunts are in the unsatisfiable core [2022-02-10 02:53:31,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:53:31,626 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 51 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:53:31,626 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:53:31,707 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 35 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:53:31,708 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [372003216] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:53:31,708 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:53:31,708 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17, 16] total 25 [2022-02-10 02:53:31,708 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534209023] [2022-02-10 02:53:31,708 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:53:31,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-10 02:53:31,708 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:53:31,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-10 02:53:31,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=461, Unknown=0, NotChecked=0, Total=600 [2022-02-10 02:53:31,709 INFO L87 Difference]: Start difference. First operand 211845 states and 357162 transitions. Second operand has 25 states, 25 states have (on average 3.12) internal successors, (78), 25 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:53:35,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:53:35,209 INFO L93 Difference]: Finished difference Result 262847 states and 440962 transitions. [2022-02-10 02:53:35,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2022-02-10 02:53:35,210 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.12) internal successors, (78), 25 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2022-02-10 02:53:35,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:53:35,988 INFO L225 Difference]: With dead ends: 262847 [2022-02-10 02:53:35,988 INFO L226 Difference]: Without dead ends: 262821 [2022-02-10 02:53:35,989 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 93 SyntacticMatches, 1 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6066 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=5474, Invalid=13708, Unknown=0, NotChecked=0, Total=19182 [2022-02-10 02:53:35,989 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 249 mSDsluCounter, 523 mSDsCounter, 0 mSdLazyCounter, 1016 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 1094 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 1016 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-10 02:53:35,989 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [249 Valid, 550 Invalid, 1094 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 1016 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-10 02:53:36,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262821 states. [2022-02-10 02:53:40,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262821 to 214930. [2022-02-10 02:53:40,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214930 states, 214929 states have (on average 1.6863150156563331) internal successors, (362438), 214929 states have internal predecessors, (362438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:53:41,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214930 states to 214930 states and 362438 transitions. [2022-02-10 02:53:41,559 INFO L78 Accepts]: Start accepts. Automaton has 214930 states and 362438 transitions. Word has length 51 [2022-02-10 02:53:41,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:53:41,560 INFO L470 AbstractCegarLoop]: Abstraction has 214930 states and 362438 transitions. [2022-02-10 02:53:41,560 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.12) internal successors, (78), 25 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:53:41,560 INFO L276 IsEmpty]: Start isEmpty. Operand 214930 states and 362438 transitions. [2022-02-10 02:53:41,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-02-10 02:53:41,689 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:53:41,689 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:53:41,705 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (168)] Ended with exit code 0 [2022-02-10 02:53:41,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 168 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable171 [2022-02-10 02:53:41,889 INFO L402 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:53:41,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:53:41,889 INFO L85 PathProgramCache]: Analyzing trace with hash -792109124, now seen corresponding path program 168 times [2022-02-10 02:53:41,889 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:53:41,890 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054112912] [2022-02-10 02:53:41,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:53:41,890 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:53:41,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:53:41,969 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 35 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:53:41,970 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:53:41,970 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054112912] [2022-02-10 02:53:41,970 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054112912] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:53:41,970 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [663307897] [2022-02-10 02:53:41,970 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:53:41,970 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:53:41,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:53:41,971 INFO L229 MonitoredProcess]: Starting monitored process 169 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:53:41,971 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (169)] Waiting until timeout for monitored process [2022-02-10 02:53:41,995 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2022-02-10 02:53:41,996 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:53:41,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 16 conjunts are in the unsatisfiable core [2022-02-10 02:53:41,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:53:42,202 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 51 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:53:42,203 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:53:42,275 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 35 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:53:42,275 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [663307897] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:53:42,275 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:53:42,275 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17, 16] total 25 [2022-02-10 02:53:42,275 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501591914] [2022-02-10 02:53:42,275 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:53:42,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-10 02:53:42,275 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:53:42,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-10 02:53:42,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=452, Unknown=0, NotChecked=0, Total=600 [2022-02-10 02:53:42,276 INFO L87 Difference]: Start difference. First operand 214930 states and 362438 transitions. Second operand has 25 states, 25 states have (on average 3.12) internal successors, (78), 25 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:53:45,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:53:45,761 INFO L93 Difference]: Finished difference Result 272309 states and 457157 transitions. [2022-02-10 02:53:45,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2022-02-10 02:53:45,761 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.12) internal successors, (78), 25 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2022-02-10 02:53:45,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:53:46,566 INFO L225 Difference]: With dead ends: 272309 [2022-02-10 02:53:46,566 INFO L226 Difference]: Without dead ends: 272298 [2022-02-10 02:53:46,567 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 93 SyntacticMatches, 1 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6767 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=6191, Invalid=14979, Unknown=0, NotChecked=0, Total=21170 [2022-02-10 02:53:46,569 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 277 mSDsluCounter, 588 mSDsCounter, 0 mSdLazyCounter, 1124 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 588 SdHoareTripleChecker+Invalid, 1202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 1124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:53:46,569 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [277 Valid, 588 Invalid, 1202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 1124 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 02:53:47,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272298 states. [2022-02-10 02:53:51,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272298 to 219087. [2022-02-10 02:53:51,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219087 states, 219086 states have (on average 1.686748582748327) internal successors, (369543), 219086 states have internal predecessors, (369543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:53:52,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219087 states to 219087 states and 369543 transitions. [2022-02-10 02:53:52,447 INFO L78 Accepts]: Start accepts. Automaton has 219087 states and 369543 transitions. Word has length 51 [2022-02-10 02:53:52,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:53:52,447 INFO L470 AbstractCegarLoop]: Abstraction has 219087 states and 369543 transitions. [2022-02-10 02:53:52,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.12) internal successors, (78), 25 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:53:52,447 INFO L276 IsEmpty]: Start isEmpty. Operand 219087 states and 369543 transitions. [2022-02-10 02:53:52,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-02-10 02:53:52,955 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:53:52,955 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:53:52,970 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (169)] Forceful destruction successful, exit code 0 [2022-02-10 02:53:53,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172,169 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:53:53,160 INFO L402 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:53:53,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:53:53,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1924159064, now seen corresponding path program 169 times [2022-02-10 02:53:53,160 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:53:53,161 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725653187] [2022-02-10 02:53:53,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:53:53,161 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:53:53,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:53:53,236 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 35 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:53:53,236 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:53:53,236 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725653187] [2022-02-10 02:53:53,236 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725653187] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:53:53,236 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1221644651] [2022-02-10 02:53:53,236 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:53:53,236 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:53:53,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:53:53,237 INFO L229 MonitoredProcess]: Starting monitored process 170 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:53:53,238 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (170)] Waiting until timeout for monitored process [2022-02-10 02:53:53,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:53:53,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 16 conjunts are in the unsatisfiable core [2022-02-10 02:53:53,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:53:53,448 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 51 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:53:53,448 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:53:53,521 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 35 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:53:53,521 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1221644651] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:53:53,521 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:53:53,521 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17, 16] total 25 [2022-02-10 02:53:53,521 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901524035] [2022-02-10 02:53:53,521 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:53:53,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-10 02:53:53,521 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:53:53,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-10 02:53:53,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=437, Unknown=0, NotChecked=0, Total=600 [2022-02-10 02:53:53,522 INFO L87 Difference]: Start difference. First operand 219087 states and 369543 transitions. Second operand has 25 states, 25 states have (on average 3.12) internal successors, (78), 25 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:53:56,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:53:56,805 INFO L93 Difference]: Finished difference Result 284406 states and 478706 transitions. [2022-02-10 02:53:56,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2022-02-10 02:53:56,806 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.12) internal successors, (78), 25 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2022-02-10 02:53:56,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:53:57,559 INFO L225 Difference]: With dead ends: 284406 [2022-02-10 02:53:57,559 INFO L226 Difference]: Without dead ends: 284406 [2022-02-10 02:53:57,560 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 93 SyntacticMatches, 1 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6433 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=6090, Invalid=13650, Unknown=0, NotChecked=0, Total=19740 [2022-02-10 02:53:57,560 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 296 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 948 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 507 SdHoareTripleChecker+Invalid, 1039 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 948 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:53:57,560 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [296 Valid, 507 Invalid, 1039 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 948 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 02:53:57,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284406 states. [2022-02-10 02:54:02,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284406 to 217817. [2022-02-10 02:54:03,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217817 states, 217816 states have (on average 1.6875849340727953) internal successors, (367583), 217816 states have internal predecessors, (367583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:03,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217817 states to 217817 states and 367583 transitions. [2022-02-10 02:54:03,615 INFO L78 Accepts]: Start accepts. Automaton has 217817 states and 367583 transitions. Word has length 51 [2022-02-10 02:54:03,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:54:03,615 INFO L470 AbstractCegarLoop]: Abstraction has 217817 states and 367583 transitions. [2022-02-10 02:54:03,615 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.12) internal successors, (78), 25 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:03,615 INFO L276 IsEmpty]: Start isEmpty. Operand 217817 states and 367583 transitions. [2022-02-10 02:54:03,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-02-10 02:54:03,754 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:54:03,754 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:54:03,770 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (170)] Forceful destruction successful, exit code 0 [2022-02-10 02:54:03,954 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173,170 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:54:03,955 INFO L402 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:54:03,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:54:03,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1500951058, now seen corresponding path program 170 times [2022-02-10 02:54:03,955 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:54:03,955 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447363198] [2022-02-10 02:54:03,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:54:03,955 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:54:03,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:54:04,388 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 50 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:04,388 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:54:04,388 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447363198] [2022-02-10 02:54:04,388 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447363198] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:54:04,388 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [604954164] [2022-02-10 02:54:04,388 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:54:04,388 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:54:04,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:54:04,389 INFO L229 MonitoredProcess]: Starting monitored process 171 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:54:04,390 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (171)] Waiting until timeout for monitored process [2022-02-10 02:54:04,410 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:54:04,410 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:54:04,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 16 conjunts are in the unsatisfiable core [2022-02-10 02:54:04,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:54:04,595 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 70 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:04,596 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:54:04,669 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 50 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:04,670 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [604954164] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:54:04,670 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:54:04,670 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 26 [2022-02-10 02:54:04,670 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244427151] [2022-02-10 02:54:04,670 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:54:04,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-10 02:54:04,670 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:54:04,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-10 02:54:04,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2022-02-10 02:54:04,671 INFO L87 Difference]: Start difference. First operand 217817 states and 367583 transitions. Second operand has 26 states, 26 states have (on average 2.8846153846153846) internal successors, (75), 26 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:06,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:54:06,924 INFO L93 Difference]: Finished difference Result 247279 states and 417245 transitions. [2022-02-10 02:54:06,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2022-02-10 02:54:06,924 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.8846153846153846) internal successors, (75), 26 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2022-02-10 02:54:06,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:54:07,831 INFO L225 Difference]: With dead ends: 247279 [2022-02-10 02:54:07,832 INFO L226 Difference]: Without dead ends: 247270 [2022-02-10 02:54:07,832 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 92 SyntacticMatches, 1 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3710 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=4157, Invalid=8499, Unknown=0, NotChecked=0, Total=12656 [2022-02-10 02:54:07,832 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 354 mSDsluCounter, 408 mSDsCounter, 0 mSdLazyCounter, 758 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 354 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 834 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 758 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:54:07,832 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [354 Valid, 406 Invalid, 834 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 758 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:54:08,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247270 states. [2022-02-10 02:54:12,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247270 to 210566. [2022-02-10 02:54:12,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210566 states, 210565 states have (on average 1.6872604658893928) internal successors, (355278), 210565 states have internal predecessors, (355278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:12,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210566 states to 210566 states and 355278 transitions. [2022-02-10 02:54:12,797 INFO L78 Accepts]: Start accepts. Automaton has 210566 states and 355278 transitions. Word has length 51 [2022-02-10 02:54:12,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:54:12,797 INFO L470 AbstractCegarLoop]: Abstraction has 210566 states and 355278 transitions. [2022-02-10 02:54:12,797 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.8846153846153846) internal successors, (75), 26 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:12,797 INFO L276 IsEmpty]: Start isEmpty. Operand 210566 states and 355278 transitions. [2022-02-10 02:54:13,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-02-10 02:54:13,336 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:54:13,336 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:54:13,359 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (171)] Ended with exit code 0 [2022-02-10 02:54:13,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174,171 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:54:13,537 INFO L402 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:54:13,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:54:13,537 INFO L85 PathProgramCache]: Analyzing trace with hash -1074929654, now seen corresponding path program 171 times [2022-02-10 02:54:13,537 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:54:13,537 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404377764] [2022-02-10 02:54:13,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:54:13,537 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:54:13,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:54:13,629 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 25 proven. 96 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:13,629 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:54:13,630 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404377764] [2022-02-10 02:54:13,630 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404377764] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:54:13,630 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1627956776] [2022-02-10 02:54:13,630 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:54:13,630 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:54:13,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:54:13,631 INFO L229 MonitoredProcess]: Starting monitored process 172 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:54:13,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (172)] Waiting until timeout for monitored process [2022-02-10 02:54:13,656 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-02-10 02:54:13,657 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:54:13,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 16 conjunts are in the unsatisfiable core [2022-02-10 02:54:13,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:54:13,862 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 51 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:13,863 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:54:13,937 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 25 proven. 96 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:13,937 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1627956776] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:54:13,937 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:54:13,937 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 27 [2022-02-10 02:54:13,937 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135218265] [2022-02-10 02:54:13,937 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:54:13,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-10 02:54:13,937 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:54:13,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-10 02:54:13,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=544, Unknown=0, NotChecked=0, Total=702 [2022-02-10 02:54:13,938 INFO L87 Difference]: Start difference. First operand 210566 states and 355278 transitions. Second operand has 27 states, 27 states have (on average 3.0) internal successors, (81), 27 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:16,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:54:16,148 INFO L93 Difference]: Finished difference Result 258156 states and 435278 transitions. [2022-02-10 02:54:16,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-02-10 02:54:16,148 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.0) internal successors, (81), 27 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2022-02-10 02:54:16,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:54:17,150 INFO L225 Difference]: With dead ends: 258156 [2022-02-10 02:54:17,151 INFO L226 Difference]: Without dead ends: 258088 [2022-02-10 02:54:17,151 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 91 SyntacticMatches, 1 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2356 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=2549, Invalid=5823, Unknown=0, NotChecked=0, Total=8372 [2022-02-10 02:54:17,151 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 184 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 919 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 489 SdHoareTripleChecker+Invalid, 971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:54:17,151 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [184 Valid, 489 Invalid, 971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 919 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 02:54:17,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258088 states. [2022-02-10 02:54:20,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258088 to 209826. [2022-02-10 02:54:21,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209826 states, 209825 states have (on average 1.6866579292267365) internal successors, (353903), 209825 states have internal predecessors, (353903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:21,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209826 states to 209826 states and 353903 transitions. [2022-02-10 02:54:21,987 INFO L78 Accepts]: Start accepts. Automaton has 209826 states and 353903 transitions. Word has length 51 [2022-02-10 02:54:21,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:54:21,987 INFO L470 AbstractCegarLoop]: Abstraction has 209826 states and 353903 transitions. [2022-02-10 02:54:21,987 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.0) internal successors, (81), 27 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:21,987 INFO L276 IsEmpty]: Start isEmpty. Operand 209826 states and 353903 transitions. [2022-02-10 02:54:22,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-02-10 02:54:22,097 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:54:22,097 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:54:22,113 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (172)] Forceful destruction successful, exit code 0 [2022-02-10 02:54:22,297 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 172 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable175 [2022-02-10 02:54:22,297 INFO L402 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:54:22,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:54:22,298 INFO L85 PathProgramCache]: Analyzing trace with hash 205680594, now seen corresponding path program 172 times [2022-02-10 02:54:22,298 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:54:22,298 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622586807] [2022-02-10 02:54:22,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:54:22,298 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:54:22,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:54:22,373 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 25 proven. 96 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:22,374 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:54:22,374 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622586807] [2022-02-10 02:54:22,374 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622586807] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:54:22,374 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1961068431] [2022-02-10 02:54:22,374 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:54:22,374 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:54:22,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:54:22,375 INFO L229 MonitoredProcess]: Starting monitored process 173 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:54:22,375 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (173)] Waiting until timeout for monitored process [2022-02-10 02:54:22,397 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:54:22,397 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:54:22,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 16 conjunts are in the unsatisfiable core [2022-02-10 02:54:22,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:54:22,589 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 51 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:22,589 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:54:22,660 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 25 proven. 96 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:22,660 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1961068431] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:54:22,661 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:54:22,661 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17, 16] total 26 [2022-02-10 02:54:22,661 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559562310] [2022-02-10 02:54:22,661 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:54:22,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-10 02:54:22,661 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:54:22,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-10 02:54:22,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=505, Unknown=0, NotChecked=0, Total=650 [2022-02-10 02:54:22,661 INFO L87 Difference]: Start difference. First operand 209826 states and 353903 transitions. Second operand has 26 states, 26 states have (on average 3.1153846153846154) internal successors, (81), 26 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:25,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:54:25,139 INFO L93 Difference]: Finished difference Result 258093 states and 434596 transitions. [2022-02-10 02:54:25,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-02-10 02:54:25,139 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.1153846153846154) internal successors, (81), 26 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2022-02-10 02:54:25,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:54:25,913 INFO L225 Difference]: With dead ends: 258093 [2022-02-10 02:54:25,913 INFO L226 Difference]: Without dead ends: 258044 [2022-02-10 02:54:25,913 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 92 SyntacticMatches, 1 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2416 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=2523, Invalid=6033, Unknown=0, NotChecked=0, Total=8556 [2022-02-10 02:54:25,914 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 220 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 666 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:54:25,914 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [220 Valid, 386 Invalid, 728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 666 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:54:26,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258044 states. [2022-02-10 02:54:29,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258044 to 209050. [2022-02-10 02:54:29,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209050 states, 209049 states have (on average 1.686226674129032) internal successors, (352504), 209049 states have internal predecessors, (352504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:30,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209050 states to 209050 states and 352504 transitions. [2022-02-10 02:54:30,866 INFO L78 Accepts]: Start accepts. Automaton has 209050 states and 352504 transitions. Word has length 51 [2022-02-10 02:54:30,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:54:30,866 INFO L470 AbstractCegarLoop]: Abstraction has 209050 states and 352504 transitions. [2022-02-10 02:54:30,866 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.1153846153846154) internal successors, (81), 26 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:30,866 INFO L276 IsEmpty]: Start isEmpty. Operand 209050 states and 352504 transitions. [2022-02-10 02:54:31,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-02-10 02:54:31,005 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:54:31,005 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:54:31,023 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (173)] Ended with exit code 0 [2022-02-10 02:54:31,205 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176,173 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:54:31,205 INFO L402 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:54:31,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:54:31,206 INFO L85 PathProgramCache]: Analyzing trace with hash -933939958, now seen corresponding path program 173 times [2022-02-10 02:54:31,206 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:54:31,206 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378266876] [2022-02-10 02:54:31,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:54:31,206 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:54:31,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:54:31,284 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 25 proven. 96 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:31,284 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:54:31,285 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378266876] [2022-02-10 02:54:31,285 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378266876] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:54:31,285 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [911473010] [2022-02-10 02:54:31,285 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:54:31,285 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:54:31,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:54:31,286 INFO L229 MonitoredProcess]: Starting monitored process 174 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:54:31,286 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (174)] Waiting until timeout for monitored process [2022-02-10 02:54:31,309 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2022-02-10 02:54:31,309 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:54:31,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 16 conjunts are in the unsatisfiable core [2022-02-10 02:54:31,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:54:31,509 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 51 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:31,509 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:54:31,589 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 25 proven. 96 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:31,589 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [911473010] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:54:31,589 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:54:31,589 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17, 15] total 25 [2022-02-10 02:54:31,589 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730986312] [2022-02-10 02:54:31,589 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:54:31,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-10 02:54:31,589 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:54:31,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-10 02:54:31,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=463, Unknown=0, NotChecked=0, Total=600 [2022-02-10 02:54:31,590 INFO L87 Difference]: Start difference. First operand 209050 states and 352504 transitions. Second operand has 25 states, 25 states have (on average 3.24) internal successors, (81), 25 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:34,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:54:34,394 INFO L93 Difference]: Finished difference Result 258113 states and 434805 transitions. [2022-02-10 02:54:34,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-02-10 02:54:34,395 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.24) internal successors, (81), 25 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2022-02-10 02:54:34,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:54:35,055 INFO L225 Difference]: With dead ends: 258113 [2022-02-10 02:54:35,056 INFO L226 Difference]: Without dead ends: 258083 [2022-02-10 02:54:35,056 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 93 SyntacticMatches, 1 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2947 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=3010, Invalid=7292, Unknown=0, NotChecked=0, Total=10302 [2022-02-10 02:54:35,056 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 185 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 974 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 510 SdHoareTripleChecker+Invalid, 1033 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 974 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:54:35,056 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [185 Valid, 510 Invalid, 1033 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 974 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 02:54:35,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258083 states. [2022-02-10 02:54:39,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258083 to 210126. [2022-02-10 02:54:39,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210126 states, 210125 states have (on average 1.6864770969660916) internal successors, (354371), 210125 states have internal predecessors, (354371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:39,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210126 states to 210126 states and 354371 transitions. [2022-02-10 02:54:39,987 INFO L78 Accepts]: Start accepts. Automaton has 210126 states and 354371 transitions. Word has length 51 [2022-02-10 02:54:39,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:54:39,987 INFO L470 AbstractCegarLoop]: Abstraction has 210126 states and 354371 transitions. [2022-02-10 02:54:39,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.24) internal successors, (81), 25 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:39,988 INFO L276 IsEmpty]: Start isEmpty. Operand 210126 states and 354371 transitions. [2022-02-10 02:54:40,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-02-10 02:54:40,509 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:54:40,509 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:54:40,526 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (174)] Forceful destruction successful, exit code 0 [2022-02-10 02:54:40,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177,174 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:54:40,715 INFO L402 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:54:40,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:54:40,716 INFO L85 PathProgramCache]: Analyzing trace with hash -735888686, now seen corresponding path program 174 times [2022-02-10 02:54:40,716 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:54:40,716 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161805411] [2022-02-10 02:54:40,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:54:40,716 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:54:40,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:54:40,791 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 25 proven. 96 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:40,792 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:54:40,792 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161805411] [2022-02-10 02:54:40,792 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161805411] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:54:40,792 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1251482425] [2022-02-10 02:54:40,792 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:54:40,792 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:54:40,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:54:40,793 INFO L229 MonitoredProcess]: Starting monitored process 175 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:54:40,794 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (175)] Waiting until timeout for monitored process [2022-02-10 02:54:40,815 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2022-02-10 02:54:40,815 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:54:40,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 16 conjunts are in the unsatisfiable core [2022-02-10 02:54:40,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:54:41,003 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 51 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:41,003 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:54:41,076 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 25 proven. 96 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:41,076 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1251482425] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:54:41,076 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:54:41,076 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17, 15] total 25 [2022-02-10 02:54:41,076 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056586321] [2022-02-10 02:54:41,076 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:54:41,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-10 02:54:41,077 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:54:41,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-10 02:54:41,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=461, Unknown=0, NotChecked=0, Total=600 [2022-02-10 02:54:41,077 INFO L87 Difference]: Start difference. First operand 210126 states and 354371 transitions. Second operand has 25 states, 25 states have (on average 3.24) internal successors, (81), 25 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:44,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:54:44,022 INFO L93 Difference]: Finished difference Result 266064 states and 447201 transitions. [2022-02-10 02:54:44,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2022-02-10 02:54:44,023 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.24) internal successors, (81), 25 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2022-02-10 02:54:44,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:54:45,071 INFO L225 Difference]: With dead ends: 266064 [2022-02-10 02:54:45,072 INFO L226 Difference]: Without dead ends: 266038 [2022-02-10 02:54:45,072 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 93 SyntacticMatches, 1 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4978 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=4724, Invalid=11532, Unknown=0, NotChecked=0, Total=16256 [2022-02-10 02:54:45,072 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 222 mSDsluCounter, 487 mSDsCounter, 0 mSdLazyCounter, 960 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 507 SdHoareTripleChecker+Invalid, 1024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 960 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:54:45,072 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [222 Valid, 507 Invalid, 1024 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 960 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 02:54:45,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266038 states. [2022-02-10 02:54:49,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266038 to 213594. [2022-02-10 02:54:49,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213594 states, 213593 states have (on average 1.6863567626279887) internal successors, (360194), 213593 states have internal predecessors, (360194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:50,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213594 states to 213594 states and 360194 transitions. [2022-02-10 02:54:50,222 INFO L78 Accepts]: Start accepts. Automaton has 213594 states and 360194 transitions. Word has length 51 [2022-02-10 02:54:50,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:54:50,223 INFO L470 AbstractCegarLoop]: Abstraction has 213594 states and 360194 transitions. [2022-02-10 02:54:50,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.24) internal successors, (81), 25 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:50,223 INFO L276 IsEmpty]: Start isEmpty. Operand 213594 states and 360194 transitions. [2022-02-10 02:54:50,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-02-10 02:54:50,371 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:54:50,371 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:54:50,388 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (175)] Ended with exit code 0 [2022-02-10 02:54:50,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 175 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable178 [2022-02-10 02:54:50,571 INFO L402 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:54:50,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:54:50,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1306506742, now seen corresponding path program 175 times [2022-02-10 02:54:50,572 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:54:50,572 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320698345] [2022-02-10 02:54:50,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:54:50,572 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:54:50,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:54:50,661 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 25 proven. 96 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:50,661 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:54:50,662 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320698345] [2022-02-10 02:54:50,662 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320698345] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:54:50,662 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1430407296] [2022-02-10 02:54:50,662 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:54:50,662 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:54:50,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:54:50,663 INFO L229 MonitoredProcess]: Starting monitored process 176 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:54:50,663 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (176)] Waiting until timeout for monitored process [2022-02-10 02:54:50,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:54:50,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 16 conjunts are in the unsatisfiable core [2022-02-10 02:54:50,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:54:51,243 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 51 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:51,243 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:54:51,338 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 25 proven. 96 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:51,339 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1430407296] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:54:51,339 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:54:51,339 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17, 15] total 25 [2022-02-10 02:54:51,339 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000170873] [2022-02-10 02:54:51,339 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:54:51,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-10 02:54:51,339 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:54:51,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-10 02:54:51,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=453, Unknown=0, NotChecked=0, Total=600 [2022-02-10 02:54:51,340 INFO L87 Difference]: Start difference. First operand 213594 states and 360194 transitions. Second operand has 25 states, 25 states have (on average 3.24) internal successors, (81), 25 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:54,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:54:54,350 INFO L93 Difference]: Finished difference Result 302933 states and 508906 transitions. [2022-02-10 02:54:54,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2022-02-10 02:54:54,350 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.24) internal successors, (81), 25 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2022-02-10 02:54:54,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:54:55,492 INFO L225 Difference]: With dead ends: 302933 [2022-02-10 02:54:55,492 INFO L226 Difference]: Without dead ends: 302922 [2022-02-10 02:54:55,493 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 93 SyntacticMatches, 1 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6311 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=5784, Invalid=13676, Unknown=0, NotChecked=0, Total=19460 [2022-02-10 02:54:55,493 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 344 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 946 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 1053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 946 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:54:55,493 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [344 Valid, 478 Invalid, 1053 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 946 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 02:54:55,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302922 states. [2022-02-10 02:55:00,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302922 to 223956. [2022-02-10 02:55:00,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223956 states, 223955 states have (on average 1.6862494697595498) internal successors, (377644), 223955 states have internal predecessors, (377644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:55:01,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223956 states to 223956 states and 377644 transitions. [2022-02-10 02:55:01,408 INFO L78 Accepts]: Start accepts. Automaton has 223956 states and 377644 transitions. Word has length 51 [2022-02-10 02:55:01,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:55:01,408 INFO L470 AbstractCegarLoop]: Abstraction has 223956 states and 377644 transitions. [2022-02-10 02:55:01,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.24) internal successors, (81), 25 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:55:01,409 INFO L276 IsEmpty]: Start isEmpty. Operand 223956 states and 377644 transitions. [2022-02-10 02:55:02,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-02-10 02:55:02,002 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:55:02,002 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:55:02,027 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (176)] Ended with exit code 0 [2022-02-10 02:55:02,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 176 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable179 [2022-02-10 02:55:02,203 INFO L402 AbstractCegarLoop]: === Iteration 181 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:55:02,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:55:02,203 INFO L85 PathProgramCache]: Analyzing trace with hash 456672722, now seen corresponding path program 176 times [2022-02-10 02:55:02,203 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:55:02,203 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445854178] [2022-02-10 02:55:02,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:55:02,203 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:55:02,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:55:02,283 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 25 proven. 96 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:55:02,283 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:55:02,283 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445854178] [2022-02-10 02:55:02,283 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445854178] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:55:02,283 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [100089645] [2022-02-10 02:55:02,283 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:55:02,283 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:55:02,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:55:02,284 INFO L229 MonitoredProcess]: Starting monitored process 177 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:55:02,285 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (177)] Waiting until timeout for monitored process [2022-02-10 02:55:02,311 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:55:02,311 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:55:02,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 16 conjunts are in the unsatisfiable core [2022-02-10 02:55:02,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:55:02,503 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 51 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:55:02,504 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:55:02,575 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 25 proven. 96 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:55:02,575 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [100089645] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:55:02,575 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:55:02,575 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17, 15] total 25 [2022-02-10 02:55:02,575 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168356400] [2022-02-10 02:55:02,575 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:55:02,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-10 02:55:02,575 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:55:02,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-10 02:55:02,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=439, Unknown=0, NotChecked=0, Total=600 [2022-02-10 02:55:02,576 INFO L87 Difference]: Start difference. First operand 223956 states and 377644 transitions. Second operand has 25 states, 25 states have (on average 3.24) internal successors, (81), 25 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:55:05,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:55:05,951 INFO L93 Difference]: Finished difference Result 311830 states and 524816 transitions. [2022-02-10 02:55:05,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2022-02-10 02:55:05,966 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.24) internal successors, (81), 25 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2022-02-10 02:55:05,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:55:06,820 INFO L225 Difference]: With dead ends: 311830 [2022-02-10 02:55:06,820 INFO L226 Difference]: Without dead ends: 311830 [2022-02-10 02:55:06,821 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 93 SyntacticMatches, 1 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6952 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=6227, Invalid=14079, Unknown=0, NotChecked=0, Total=20306 [2022-02-10 02:55:06,821 INFO L933 BasicCegarLoop]: 62 mSDtfsCounter, 338 mSDsluCounter, 652 mSDsCounter, 0 mSdLazyCounter, 1045 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 592 SdHoareTripleChecker+Invalid, 1145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 1045 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:55:06,821 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [338 Valid, 592 Invalid, 1145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 1045 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 02:55:07,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311830 states. [2022-02-10 02:55:11,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311830 to 226713. [2022-02-10 02:55:12,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226713 states, 226712 states have (on average 1.6872154980768552) internal successors, (382512), 226712 states have internal predecessors, (382512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:55:13,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226713 states to 226713 states and 382512 transitions. [2022-02-10 02:55:13,128 INFO L78 Accepts]: Start accepts. Automaton has 226713 states and 382512 transitions. Word has length 51 [2022-02-10 02:55:13,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:55:13,128 INFO L470 AbstractCegarLoop]: Abstraction has 226713 states and 382512 transitions. [2022-02-10 02:55:13,128 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.24) internal successors, (81), 25 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:55:13,128 INFO L276 IsEmpty]: Start isEmpty. Operand 226713 states and 382512 transitions. [2022-02-10 02:55:13,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-02-10 02:55:13,253 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:55:13,254 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:55:13,271 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (177)] Forceful destruction successful, exit code 0 [2022-02-10 02:55:13,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180,177 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:55:13,454 INFO L402 AbstractCegarLoop]: === Iteration 182 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:55:13,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:55:13,454 INFO L85 PathProgramCache]: Analyzing trace with hash 683727886, now seen corresponding path program 177 times [2022-02-10 02:55:13,455 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:55:13,455 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678183855] [2022-02-10 02:55:13,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:55:13,455 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:55:13,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:55:13,544 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 42 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:55:13,544 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:55:13,544 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678183855] [2022-02-10 02:55:13,545 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678183855] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:55:13,545 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [235565300] [2022-02-10 02:55:13,545 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:55:13,545 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:55:13,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:55:13,546 INFO L229 MonitoredProcess]: Starting monitored process 178 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:55:13,546 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (178)] Waiting until timeout for monitored process [2022-02-10 02:55:13,572 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2022-02-10 02:55:13,572 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:55:13,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 16 conjunts are in the unsatisfiable core [2022-02-10 02:55:13,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:55:13,784 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 70 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:55:13,784 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:55:13,855 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 42 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:55:13,856 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [235565300] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:55:13,856 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:55:13,856 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 27 [2022-02-10 02:55:13,856 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264531228] [2022-02-10 02:55:13,856 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:55:13,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-10 02:55:13,856 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:55:13,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-10 02:55:13,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=509, Unknown=0, NotChecked=0, Total=702 [2022-02-10 02:55:13,857 INFO L87 Difference]: Start difference. First operand 226713 states and 382512 transitions. Second operand has 27 states, 27 states have (on average 2.888888888888889) internal successors, (78), 27 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:55:16,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:55:16,500 INFO L93 Difference]: Finished difference Result 271818 states and 458814 transitions. [2022-02-10 02:55:16,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2022-02-10 02:55:16,500 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.888888888888889) internal successors, (78), 27 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2022-02-10 02:55:16,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:55:17,202 INFO L225 Difference]: With dead ends: 271818 [2022-02-10 02:55:17,202 INFO L226 Difference]: Without dead ends: 271800 [2022-02-10 02:55:17,203 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 91 SyntacticMatches, 1 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3919 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=4022, Invalid=8860, Unknown=0, NotChecked=0, Total=12882 [2022-02-10 02:55:17,203 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 345 mSDsluCounter, 434 mSDsCounter, 0 mSdLazyCounter, 786 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 408 SdHoareTripleChecker+Invalid, 869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 786 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:55:17,203 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [345 Valid, 408 Invalid, 869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 786 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:55:17,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271800 states. [2022-02-10 02:55:21,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271800 to 223900. [2022-02-10 02:55:22,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223900 states, 223899 states have (on average 1.6869168687667206) internal successors, (377699), 223899 states have internal predecessors, (377699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:55:23,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223900 states to 223900 states and 377699 transitions. [2022-02-10 02:55:23,494 INFO L78 Accepts]: Start accepts. Automaton has 223900 states and 377699 transitions. Word has length 51 [2022-02-10 02:55:23,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:55:23,494 INFO L470 AbstractCegarLoop]: Abstraction has 223900 states and 377699 transitions. [2022-02-10 02:55:23,494 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.888888888888889) internal successors, (78), 27 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:55:23,494 INFO L276 IsEmpty]: Start isEmpty. Operand 223900 states and 377699 transitions. [2022-02-10 02:55:23,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-02-10 02:55:23,653 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:55:23,653 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:55:23,673 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (178)] Forceful destruction successful, exit code 0 [2022-02-10 02:55:23,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181,178 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:55:23,859 INFO L402 AbstractCegarLoop]: === Iteration 183 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:55:23,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:55:23,860 INFO L85 PathProgramCache]: Analyzing trace with hash 630785532, now seen corresponding path program 178 times [2022-02-10 02:55:23,860 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:55:23,860 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12439496] [2022-02-10 02:55:23,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:55:23,860 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:55:23,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:55:23,956 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 21 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:55:23,957 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:55:23,957 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12439496] [2022-02-10 02:55:23,957 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12439496] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:55:23,957 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [75491405] [2022-02-10 02:55:23,957 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:55:23,957 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:55:23,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:55:23,958 INFO L229 MonitoredProcess]: Starting monitored process 179 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:55:23,959 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (179)] Waiting until timeout for monitored process [2022-02-10 02:55:23,980 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:55:23,980 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:55:23,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 16 conjunts are in the unsatisfiable core [2022-02-10 02:55:23,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:55:24,232 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 51 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:55:24,232 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:55:24,319 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 21 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:55:24,320 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [75491405] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:55:24,320 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:55:24,320 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 28 [2022-02-10 02:55:24,320 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345640158] [2022-02-10 02:55:24,320 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:55:24,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-02-10 02:55:24,320 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:55:24,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-02-10 02:55:24,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=589, Unknown=0, NotChecked=0, Total=756 [2022-02-10 02:55:24,321 INFO L87 Difference]: Start difference. First operand 223900 states and 377699 transitions. Second operand has 28 states, 28 states have (on average 3.0) internal successors, (84), 28 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:55:27,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:55:27,115 INFO L93 Difference]: Finished difference Result 260103 states and 437677 transitions. [2022-02-10 02:55:27,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-02-10 02:55:27,116 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.0) internal successors, (84), 28 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2022-02-10 02:55:27,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:55:27,864 INFO L225 Difference]: With dead ends: 260103 [2022-02-10 02:55:27,865 INFO L226 Difference]: Without dead ends: 260035 [2022-02-10 02:55:27,865 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 90 SyntacticMatches, 1 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2763 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2789, Invalid=6717, Unknown=0, NotChecked=0, Total=9506 [2022-02-10 02:55:27,865 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 172 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 880 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 491 SdHoareTripleChecker+Invalid, 943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 880 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:55:27,865 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [172 Valid, 491 Invalid, 943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 880 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 02:55:28,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260035 states. [2022-02-10 02:55:32,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260035 to 222432. [2022-02-10 02:55:32,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222432 states, 222431 states have (on average 1.6860149889179117) internal successors, (375022), 222431 states have internal predecessors, (375022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:55:33,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222432 states to 222432 states and 375022 transitions. [2022-02-10 02:55:33,575 INFO L78 Accepts]: Start accepts. Automaton has 222432 states and 375022 transitions. Word has length 51 [2022-02-10 02:55:33,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:55:33,575 INFO L470 AbstractCegarLoop]: Abstraction has 222432 states and 375022 transitions. [2022-02-10 02:55:33,575 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.0) internal successors, (84), 28 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:55:33,575 INFO L276 IsEmpty]: Start isEmpty. Operand 222432 states and 375022 transitions. [2022-02-10 02:55:33,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-02-10 02:55:33,715 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:55:33,715 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:55:33,733 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (179)] Forceful destruction successful, exit code 0 [2022-02-10 02:55:33,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182,179 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:55:33,923 INFO L402 AbstractCegarLoop]: === Iteration 184 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:55:33,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:55:33,923 INFO L85 PathProgramCache]: Analyzing trace with hash -1526828952, now seen corresponding path program 179 times [2022-02-10 02:55:33,923 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:55:33,923 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153587255] [2022-02-10 02:55:33,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:55:33,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:55:33,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:55:33,997 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 21 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:55:33,997 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:55:33,997 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153587255] [2022-02-10 02:55:33,997 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153587255] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:55:33,997 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1707165567] [2022-02-10 02:55:33,997 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:55:33,997 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:55:33,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:55:33,998 INFO L229 MonitoredProcess]: Starting monitored process 180 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:55:33,999 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (180)] Waiting until timeout for monitored process [2022-02-10 02:55:34,021 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2022-02-10 02:55:34,021 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:55:34,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 16 conjunts are in the unsatisfiable core [2022-02-10 02:55:34,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:55:34,242 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 51 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:55:34,242 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:55:34,319 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 21 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:55:34,319 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1707165567] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:55:34,319 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:55:34,319 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17, 16] total 27 [2022-02-10 02:55:34,319 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124339640] [2022-02-10 02:55:34,320 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:55:34,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-10 02:55:34,320 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:55:34,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-10 02:55:34,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=549, Unknown=0, NotChecked=0, Total=702 [2022-02-10 02:55:34,320 INFO L87 Difference]: Start difference. First operand 222432 states and 375022 transitions. Second operand has 27 states, 27 states have (on average 3.111111111111111) internal successors, (84), 27 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:55:36,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:55:36,657 INFO L93 Difference]: Finished difference Result 258303 states and 434295 transitions. [2022-02-10 02:55:36,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2022-02-10 02:55:36,658 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.111111111111111) internal successors, (84), 27 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2022-02-10 02:55:36,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:55:37,718 INFO L225 Difference]: With dead ends: 258303 [2022-02-10 02:55:37,718 INFO L226 Difference]: Without dead ends: 258254 [2022-02-10 02:55:37,719 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 91 SyntacticMatches, 1 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2817 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=2761, Invalid=6941, Unknown=0, NotChecked=0, Total=9702 [2022-02-10 02:55:37,719 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 186 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 1021 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 541 SdHoareTripleChecker+Invalid, 1079 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 1021 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:55:37,719 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [186 Valid, 541 Invalid, 1079 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 1021 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 02:55:37,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258254 states. [2022-02-10 02:55:41,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258254 to 220559. [2022-02-10 02:55:41,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220559 states, 220558 states have (on average 1.6852347228393438) internal successors, (371692), 220558 states have internal predecessors, (371692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:55:42,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220559 states to 220559 states and 371692 transitions. [2022-02-10 02:55:42,770 INFO L78 Accepts]: Start accepts. Automaton has 220559 states and 371692 transitions. Word has length 51 [2022-02-10 02:55:42,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:55:42,770 INFO L470 AbstractCegarLoop]: Abstraction has 220559 states and 371692 transitions. [2022-02-10 02:55:42,770 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.111111111111111) internal successors, (84), 27 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:55:42,770 INFO L276 IsEmpty]: Start isEmpty. Operand 220559 states and 371692 transitions. [2022-02-10 02:55:42,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-02-10 02:55:42,891 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:55:42,891 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:55:42,908 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (180)] Forceful destruction successful, exit code 0 [2022-02-10 02:55:43,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 180 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable183 [2022-02-10 02:55:43,092 INFO L402 AbstractCegarLoop]: === Iteration 185 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:55:43,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:55:43,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1278934396, now seen corresponding path program 180 times [2022-02-10 02:55:43,092 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:55:43,092 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323133603] [2022-02-10 02:55:43,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:55:43,092 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:55:43,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:55:43,159 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 21 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:55:43,159 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:55:43,159 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323133603] [2022-02-10 02:55:43,159 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323133603] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:55:43,159 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1262613905] [2022-02-10 02:55:43,159 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:55:43,159 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:55:43,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:55:43,160 INFO L229 MonitoredProcess]: Starting monitored process 181 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:55:43,161 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (181)] Waiting until timeout for monitored process [2022-02-10 02:55:43,184 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2022-02-10 02:55:43,184 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:55:43,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 16 conjunts are in the unsatisfiable core [2022-02-10 02:55:43,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:55:43,409 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 51 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:55:43,409 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:55:43,488 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 21 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:55:43,488 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1262613905] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:55:43,488 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:55:43,488 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17, 15] total 26 [2022-02-10 02:55:43,488 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371222035] [2022-02-10 02:55:43,488 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:55:43,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-10 02:55:43,489 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:55:43,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-10 02:55:43,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=506, Unknown=0, NotChecked=0, Total=650 [2022-02-10 02:55:43,489 INFO L87 Difference]: Start difference. First operand 220559 states and 371692 transitions. Second operand has 26 states, 26 states have (on average 3.230769230769231) internal successors, (84), 26 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:55:46,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:55:46,276 INFO L93 Difference]: Finished difference Result 260858 states and 438949 transitions. [2022-02-10 02:55:46,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-02-10 02:55:46,276 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.230769230769231) internal successors, (84), 26 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2022-02-10 02:55:46,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:55:47,022 INFO L225 Difference]: With dead ends: 260858 [2022-02-10 02:55:47,022 INFO L226 Difference]: Without dead ends: 260828 [2022-02-10 02:55:47,023 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 92 SyntacticMatches, 1 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3223 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=3207, Invalid=7923, Unknown=0, NotChecked=0, Total=11130 [2022-02-10 02:55:47,023 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 244 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 961 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 1034 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 961 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:55:47,023 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [244 Valid, 480 Invalid, 1034 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 961 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 02:55:47,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260828 states. [2022-02-10 02:55:51,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260828 to 218393. [2022-02-10 02:55:51,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218393 states, 218392 states have (on average 1.684594673797575) internal successors, (367902), 218392 states have internal predecessors, (367902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:55:52,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218393 states to 218393 states and 367902 transitions. [2022-02-10 02:55:52,709 INFO L78 Accepts]: Start accepts. Automaton has 218393 states and 367902 transitions. Word has length 51 [2022-02-10 02:55:52,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:55:52,709 INFO L470 AbstractCegarLoop]: Abstraction has 218393 states and 367902 transitions. [2022-02-10 02:55:52,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.230769230769231) internal successors, (84), 26 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:55:52,709 INFO L276 IsEmpty]: Start isEmpty. Operand 218393 states and 367902 transitions. [2022-02-10 02:55:52,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-02-10 02:55:52,867 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:55:52,867 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:55:52,884 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (181)] Forceful destruction successful, exit code 0 [2022-02-10 02:55:53,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184,181 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:55:53,084 INFO L402 AbstractCegarLoop]: === Iteration 186 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:55:53,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:55:53,084 INFO L85 PathProgramCache]: Analyzing trace with hash -185882392, now seen corresponding path program 181 times [2022-02-10 02:55:53,084 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:55:53,084 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502405983] [2022-02-10 02:55:53,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:55:53,084 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:55:53,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:55:53,150 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 21 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:55:53,150 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:55:53,150 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502405983] [2022-02-10 02:55:53,151 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502405983] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:55:53,151 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [701517493] [2022-02-10 02:55:53,151 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:55:53,151 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:55:53,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:55:53,152 INFO L229 MonitoredProcess]: Starting monitored process 182 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:55:53,153 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (182)] Waiting until timeout for monitored process [2022-02-10 02:55:53,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:55:53,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 16 conjunts are in the unsatisfiable core [2022-02-10 02:55:53,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:55:53,400 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 51 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:55:53,400 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:55:53,500 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 21 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:55:53,500 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [701517493] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:55:53,501 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:55:53,501 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 17, 14] total 25 [2022-02-10 02:55:53,501 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382060910] [2022-02-10 02:55:53,501 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:55:53,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-10 02:55:53,501 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:55:53,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-10 02:55:53,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=460, Unknown=0, NotChecked=0, Total=600 [2022-02-10 02:55:53,501 INFO L87 Difference]: Start difference. First operand 218393 states and 367902 transitions. Second operand has 25 states, 25 states have (on average 3.36) internal successors, (84), 25 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:55:56,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:55:56,339 INFO L93 Difference]: Finished difference Result 288006 states and 484862 transitions. [2022-02-10 02:55:56,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2022-02-10 02:55:56,340 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.36) internal successors, (84), 25 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2022-02-10 02:55:56,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:55:57,475 INFO L225 Difference]: With dead ends: 288006 [2022-02-10 02:55:57,476 INFO L226 Difference]: Without dead ends: 287991 [2022-02-10 02:55:57,476 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 93 SyntacticMatches, 1 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3893 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=3871, Invalid=9011, Unknown=0, NotChecked=0, Total=12882 [2022-02-10 02:55:57,477 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 292 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 798 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 798 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:55:57,477 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [292 Valid, 412 Invalid, 889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 798 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 02:55:57,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287991 states. [2022-02-10 02:56:02,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287991 to 223569. [2022-02-10 02:56:02,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223569 states, 223568 states have (on average 1.6845568238746154) internal successors, (376613), 223568 states have internal predecessors, (376613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:56:03,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223569 states to 223569 states and 376613 transitions. [2022-02-10 02:56:03,418 INFO L78 Accepts]: Start accepts. Automaton has 223569 states and 376613 transitions. Word has length 51 [2022-02-10 02:56:03,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:56:03,418 INFO L470 AbstractCegarLoop]: Abstraction has 223569 states and 376613 transitions. [2022-02-10 02:56:03,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.36) internal successors, (84), 25 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:56:03,419 INFO L276 IsEmpty]: Start isEmpty. Operand 223569 states and 376613 transitions. [2022-02-10 02:56:03,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-02-10 02:56:03,577 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:56:03,577 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:56:03,601 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (182)] Forceful destruction successful, exit code 0 [2022-02-10 02:56:03,777 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 182 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable185 [2022-02-10 02:56:03,777 INFO L402 AbstractCegarLoop]: === Iteration 187 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:56:03,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:56:03,778 INFO L85 PathProgramCache]: Analyzing trace with hash -1282632452, now seen corresponding path program 182 times [2022-02-10 02:56:03,778 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:56:03,778 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545416524] [2022-02-10 02:56:03,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:56:03,778 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:56:03,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:56:03,844 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 21 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:56:03,845 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:56:03,845 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545416524] [2022-02-10 02:56:03,845 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545416524] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:56:03,845 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [984288644] [2022-02-10 02:56:03,845 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:56:03,845 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:56:03,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:56:03,847 INFO L229 MonitoredProcess]: Starting monitored process 183 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:56:03,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (183)] Waiting until timeout for monitored process [2022-02-10 02:56:03,870 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:56:03,870 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:56:03,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 16 conjunts are in the unsatisfiable core [2022-02-10 02:56:03,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:56:04,089 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 51 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:56:04,090 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:56:04,168 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 21 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:56:04,168 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [984288644] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:56:04,168 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:56:04,168 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 17, 14] total 25 [2022-02-10 02:56:04,168 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360068472] [2022-02-10 02:56:04,168 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:56:04,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-10 02:56:04,169 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:56:04,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-10 02:56:04,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=453, Unknown=0, NotChecked=0, Total=600 [2022-02-10 02:56:04,169 INFO L87 Difference]: Start difference. First operand 223569 states and 376613 transitions. Second operand has 25 states, 25 states have (on average 3.36) internal successors, (84), 25 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:56:07,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:56:07,475 INFO L93 Difference]: Finished difference Result 319704 states and 536392 transitions. [2022-02-10 02:56:07,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2022-02-10 02:56:07,475 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.36) internal successors, (84), 25 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2022-02-10 02:56:07,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:56:08,670 INFO L225 Difference]: With dead ends: 319704 [2022-02-10 02:56:08,670 INFO L226 Difference]: Without dead ends: 319693 [2022-02-10 02:56:08,671 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 93 SyntacticMatches, 1 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6215 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=5558, Invalid=12802, Unknown=0, NotChecked=0, Total=18360 [2022-02-10 02:56:08,671 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 375 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 895 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 483 SdHoareTripleChecker+Invalid, 994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 895 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:56:08,671 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [375 Valid, 483 Invalid, 994 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 895 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 02:56:08,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319693 states. [2022-02-10 02:56:13,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319693 to 232731. [2022-02-10 02:56:14,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232731 states, 232730 states have (on average 1.6844369011300648) internal successors, (392019), 232730 states have internal predecessors, (392019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:56:14,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232731 states to 232731 states and 392019 transitions. [2022-02-10 02:56:14,797 INFO L78 Accepts]: Start accepts. Automaton has 232731 states and 392019 transitions. Word has length 51 [2022-02-10 02:56:14,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:56:14,797 INFO L470 AbstractCegarLoop]: Abstraction has 232731 states and 392019 transitions. [2022-02-10 02:56:14,797 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.36) internal successors, (84), 25 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:56:14,797 INFO L276 IsEmpty]: Start isEmpty. Operand 232731 states and 392019 transitions. [2022-02-10 02:56:15,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-02-10 02:56:15,328 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:56:15,328 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:56:15,344 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (183)] Forceful destruction successful, exit code 0 [2022-02-10 02:56:15,528 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186,183 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:56:15,529 INFO L402 AbstractCegarLoop]: === Iteration 188 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:56:15,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:56:15,529 INFO L85 PathProgramCache]: Analyzing trace with hash 726483304, now seen corresponding path program 183 times [2022-02-10 02:56:15,529 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:56:15,529 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126726229] [2022-02-10 02:56:15,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:56:15,529 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:56:15,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:56:15,602 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 21 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:56:15,602 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:56:15,602 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126726229] [2022-02-10 02:56:15,603 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126726229] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:56:15,603 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [57075399] [2022-02-10 02:56:15,603 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:56:15,603 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:56:15,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:56:15,604 INFO L229 MonitoredProcess]: Starting monitored process 184 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:56:15,604 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (184)] Waiting until timeout for monitored process [2022-02-10 02:56:15,627 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2022-02-10 02:56:15,627 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:56:15,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 16 conjunts are in the unsatisfiable core [2022-02-10 02:56:15,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:56:15,847 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 51 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:56:15,848 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:56:15,928 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 21 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:56:15,929 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [57075399] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:56:15,929 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:56:15,929 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 17, 14] total 25 [2022-02-10 02:56:15,929 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030136124] [2022-02-10 02:56:15,929 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:56:15,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-10 02:56:15,929 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:56:15,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-10 02:56:15,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=440, Unknown=0, NotChecked=0, Total=600 [2022-02-10 02:56:15,930 INFO L87 Difference]: Start difference. First operand 232731 states and 392019 transitions. Second operand has 25 states, 25 states have (on average 3.36) internal successors, (84), 25 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:56:19,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:56:19,547 INFO L93 Difference]: Finished difference Result 331036 states and 556706 transitions. [2022-02-10 02:56:19,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2022-02-10 02:56:19,547 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.36) internal successors, (84), 25 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2022-02-10 02:56:19,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:56:20,550 INFO L225 Difference]: With dead ends: 331036 [2022-02-10 02:56:20,550 INFO L226 Difference]: Without dead ends: 331036 [2022-02-10 02:56:20,551 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 93 SyntacticMatches, 1 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8113 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=6767, Invalid=15285, Unknown=0, NotChecked=0, Total=22052 [2022-02-10 02:56:20,552 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 374 mSDsluCounter, 622 mSDsCounter, 0 mSdLazyCounter, 1008 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 374 SdHoareTripleChecker+Valid, 556 SdHoareTripleChecker+Invalid, 1120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 1008 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:56:20,552 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [374 Valid, 556 Invalid, 1120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 1008 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 02:56:21,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331036 states. [2022-02-10 02:56:26,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331036 to 237121. [2022-02-10 02:56:26,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237121 states, 237120 states have (on average 1.6854588394062078) internal successors, (399656), 237120 states have internal predecessors, (399656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:56:27,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237121 states to 237121 states and 399656 transitions. [2022-02-10 02:56:27,959 INFO L78 Accepts]: Start accepts. Automaton has 237121 states and 399656 transitions. Word has length 51 [2022-02-10 02:56:27,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:56:27,959 INFO L470 AbstractCegarLoop]: Abstraction has 237121 states and 399656 transitions. [2022-02-10 02:56:27,959 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.36) internal successors, (84), 25 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:56:27,959 INFO L276 IsEmpty]: Start isEmpty. Operand 237121 states and 399656 transitions. [2022-02-10 02:56:28,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-02-10 02:56:28,106 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:56:28,106 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:56:28,123 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (184)] Forceful destruction successful, exit code 0 [2022-02-10 02:56:28,322 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187,184 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:56:28,322 INFO L402 AbstractCegarLoop]: === Iteration 189 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:56:28,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:56:28,323 INFO L85 PathProgramCache]: Analyzing trace with hash -1337155438, now seen corresponding path program 184 times [2022-02-10 02:56:28,323 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:56:28,323 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711245049] [2022-02-10 02:56:28,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:56:28,323 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:56:28,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:56:28,417 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 40 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:56:28,418 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:56:28,418 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711245049] [2022-02-10 02:56:28,418 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711245049] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:56:28,418 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [327010979] [2022-02-10 02:56:28,418 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:56:28,418 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:56:28,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:56:28,419 INFO L229 MonitoredProcess]: Starting monitored process 185 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:56:28,420 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (185)] Waiting until timeout for monitored process [2022-02-10 02:56:28,445 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:56:28,446 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:56:28,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 16 conjunts are in the unsatisfiable core [2022-02-10 02:56:28,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:56:28,730 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 70 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:56:28,731 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:56:28,820 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 40 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:56:28,821 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [327010979] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:56:28,821 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:56:28,821 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 28 [2022-02-10 02:56:28,821 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029026515] [2022-02-10 02:56:28,821 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:56:28,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-02-10 02:56:28,821 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:56:28,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-02-10 02:56:28,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=561, Unknown=0, NotChecked=0, Total=756 [2022-02-10 02:56:28,822 INFO L87 Difference]: Start difference. First operand 237121 states and 399656 transitions. Second operand has 28 states, 28 states have (on average 2.892857142857143) internal successors, (81), 28 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:56:31,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:56:31,872 INFO L93 Difference]: Finished difference Result 296167 states and 499600 transitions. [2022-02-10 02:56:31,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2022-02-10 02:56:31,873 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.892857142857143) internal successors, (81), 28 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2022-02-10 02:56:31,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:56:32,720 INFO L225 Difference]: With dead ends: 296167 [2022-02-10 02:56:32,720 INFO L226 Difference]: Without dead ends: 296143 [2022-02-10 02:56:32,721 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 90 SyntacticMatches, 1 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4027 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=3820, Invalid=9062, Unknown=0, NotChecked=0, Total=12882 [2022-02-10 02:56:32,721 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 358 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 719 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-10 02:56:32,721 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [358 Valid, 369 Invalid, 818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 719 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-10 02:56:33,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296143 states. Received shutdown request... [2022-02-10 02:56:33,583 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (2 of 3 remaining) [2022-02-10 02:56:33,600 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (185)] Forceful destruction successful, exit code 0 [2022-02-10 02:56:33,609 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (185)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-02-10 02:56:33,610 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-02-10 02:56:33,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 185 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable188 [2022-02-10 02:56:33,791 WARN L594 AbstractCegarLoop]: Verification canceled: while executing MinimizeSevpa. [2022-02-10 02:56:33,792 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-02-10 02:56:33,792 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-02-10 02:56:33,794 INFO L732 BasicCegarLoop]: Path program histogram: [184, 2, 2, 1] [2022-02-10 02:56:33,803 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-02-10 02:56:33,804 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-10 02:56:33,806 INFO L202 PluginConnector]: Adding new model concurrent_increment.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.02 02:56:33 BasicIcfg [2022-02-10 02:56:33,806 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-10 02:56:33,811 INFO L158 Benchmark]: Toolchain (without parser) took 699892.08ms. Allocated memory was 191.9MB in the beginning and 8.0GB in the end (delta: 7.8GB). Free memory was 155.4MB in the beginning and 6.1GB in the end (delta: -6.0GB). Peak memory consumption was 2.2GB. Max. memory is 8.0GB. [2022-02-10 02:56:33,811 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.13ms. Allocated memory is still 191.9MB. Free memory was 156.4MB in the beginning and 156.3MB in the end (delta: 122.5kB). There was no memory consumed. Max. memory is 8.0GB. [2022-02-10 02:56:33,811 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.17ms. Allocated memory is still 191.9MB. Free memory was 155.3MB in the beginning and 153.7MB in the end (delta: 1.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-02-10 02:56:33,811 INFO L158 Benchmark]: Boogie Preprocessor took 13.53ms. Allocated memory is still 191.9MB. Free memory was 153.7MB in the beginning and 152.8MB in the end (delta: 938.1kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-10 02:56:33,811 INFO L158 Benchmark]: RCFGBuilder took 206.82ms. Allocated memory is still 191.9MB. Free memory was 152.8MB in the beginning and 144.5MB in the end (delta: 8.3MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2022-02-10 02:56:33,811 INFO L158 Benchmark]: TraceAbstraction took 699646.26ms. Allocated memory was 191.9MB in the beginning and 8.0GB in the end (delta: 7.8GB). Free memory was 144.0MB in the beginning and 6.1GB in the end (delta: -6.0GB). Peak memory consumption was 2.2GB. Max. memory is 8.0GB. [2022-02-10 02:56:33,812 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.13ms. Allocated memory is still 191.9MB. Free memory was 156.4MB in the beginning and 156.3MB in the end (delta: 122.5kB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 20.17ms. Allocated memory is still 191.9MB. Free memory was 155.3MB in the beginning and 153.7MB in the end (delta: 1.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 13.53ms. Allocated memory is still 191.9MB. Free memory was 153.7MB in the beginning and 152.8MB in the end (delta: 938.1kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 206.82ms. Allocated memory is still 191.9MB. Free memory was 152.8MB in the beginning and 144.5MB in the end (delta: 8.3MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * TraceAbstraction took 699646.26ms. Allocated memory was 191.9MB in the beginning and 8.0GB in the end (delta: 7.8GB). Free memory was 144.0MB in the beginning and 6.1GB in the end (delta: -6.0GB). Peak memory consumption was 2.2GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Independence queries for same thread: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 25]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 20]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 20]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing MinimizeSevpa. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 35 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 699.5s, OverallIterations: 189, TraceHistogramMax: 7, PathProgramHistogramMax: 184, EmptinessCheckTime: 15.2s, AutomataDifference: 256.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.3s, PartialOrderReductionTime: 0.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 33658 SdHoareTripleChecker+Valid, 39.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 33658 mSDsluCounter, 54553 SdHoareTripleChecker+Invalid, 32.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 55194 mSDsCounter, 9556 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 88285 IncrementalHoareTripleChecker+Invalid, 97841 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9556 mSolverCounterUnsat, 6805 mSDtfsCounter, 88285 mSolverCounterSat, 0.4s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 24899 GetRequests, 13486 SyntacticMatches, 244 SemanticMatches, 11169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 302229 ImplicationChecksByTransitivity, 104.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=237121occurred in iteration=188, InterpolantAutomatonStates: 9904, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 329.1s AutomataMinimizationTime, 189 MinimizatonAttempts, 3009320 StatesRemovedByMinimization, 188 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 1.9s SatisfiabilityAnalysisTime, 54.5s InterpolantComputationTime, 14835 NumberOfCodeBlocks, 14835 NumberOfCodeBlocksAsserted, 916 NumberOfCheckSat, 21658 ConstructedInterpolants, 0 QuantifiedInterpolants, 97458 SizeOfPredicates, 632 NumberOfNonLiveVariables, 13220 ConjunctsInSsa, 2498 ConjunctsInUnsatCore, 557 InterpolantComputations, 5 PerfectInterpolantSequences, 12307/37811 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown [2022-02-10 02:56:33,838 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 !SESSION 2022-02-10 02:44:51.734 ----------------------------------------------- eclipse.buildId=unknown java.version=11.0.12 java.vendor=Debian BootLoader constants: OS=linux, ARCH=x86_64, WS=gtk, NL=en_US Framework arguments: -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-MCRwithDepranks-BasicCegarLoop.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/concurrent_increment.bpl Command-line arguments: -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-MCRwithDepranks-BasicCegarLoop.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/concurrent_increment.bpl !ENTRY org.eclipse.osgi 4 0 2022-02-10 02:56:34.064 !MESSAGE Application error !STACK 1 org.eclipse.core.internal.resources.ResourceException(/)[568]: java.io.FileNotFoundException: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e5d8df4c/.metadata/.plugins/org.eclipse.core.resources/.root/1.tree (No such file or directory) at java.base/java.io.FileOutputStream.open0(Native Method) at java.base/java.io.FileOutputStream.open(FileOutputStream.java:298) at java.base/java.io.FileOutputStream.(FileOutputStream.java:237) at java.base/java.io.FileOutputStream.(FileOutputStream.java:187) at org.eclipse.core.internal.localstore.SafeFileOutputStream.(SafeFileOutputStream.java:55) at org.eclipse.core.internal.resources.SaveManager.saveTree(SaveManager.java:1381) at org.eclipse.core.internal.resources.SaveManager.save(SaveManager.java:1168) at org.eclipse.core.internal.resources.Workspace.save(Workspace.java:2333) at org.eclipse.core.internal.resources.Workspace.save(Workspace.java:2322) at de.uni_freiburg.informatik.ultimate.core.coreplugin.UltimateCore.start(UltimateCore.java:191) at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:203) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:401) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:255) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:566) at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:657) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:594) at org.eclipse.equinox.launcher.Main.run(Main.java:1465) at org.eclipse.equinox.launcher.Main.main(Main.java:1438) An error has occurred. See the log file /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e5d8df4c/.metadata/.log.