/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-FA-NoLbe.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 [2022-02-15 13:01:41,535 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-15 13:01:41,536 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-15 13:01:41,588 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-15 13:01:41,625 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-FA-NoLbe.epf [2022-02-15 13:01:41,641 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-15 13:01:41,641 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-15 13:01:41,641 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-15 13:01:41,641 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-15 13:01:41,642 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-15 13:01:41,642 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-15 13:01:41,642 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-15 13:01:41,642 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-15 13:01:41,642 INFO L138 SettingsManager]: * Use SBE=true [2022-02-15 13:01:41,643 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-15 13:01:41,643 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-15 13:01:41,643 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-15 13:01:41,643 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-15 13:01:41,643 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-15 13:01:41,643 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-15 13:01:41,643 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-15 13:01:41,643 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-15 13:01:41,644 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-15 13:01:41,644 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-15 13:01:41,644 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-15 13:01:41,644 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-15 13:01:41,644 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-15 13:01:41,644 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-15 13:01:41,644 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-15 13:01:41,644 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-15 13:01:41,644 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-15 13:01:41,645 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-15 13:01:41,645 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-15 13:01:41,645 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-15 13:01:41,645 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-15 13:01:41,645 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-15 13:01:41,645 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-15 13:01:41,645 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-15 13:01:41,645 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-02-15 13:01:41,827 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-15 13:01:41,851 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-15 13:01:41,856 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-15 13:01:41,857 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-02-15 13:01:41,858 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-02-15 13:01:41,859 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/concurrent_increment.bpl [2022-02-15 13:01:41,859 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/concurrent_increment.bpl' [2022-02-15 13:01:41,881 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-15 13:01:41,882 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-15 13:01:41,883 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-15 13:01:41,884 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-15 13:01:41,884 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-15 13:01:41,894 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "concurrent_increment.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.02 01:01:41" (1/1) ... [2022-02-15 13:01:41,900 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "concurrent_increment.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.02 01:01:41" (1/1) ... [2022-02-15 13:01:41,906 INFO L137 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-02-15 13:01:41,908 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-15 13:01:41,909 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-15 13:01:41,909 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-15 13:01:41,910 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-15 13:01:41,916 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "concurrent_increment.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.02 01:01:41" (1/1) ... [2022-02-15 13:01:41,916 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "concurrent_increment.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.02 01:01:41" (1/1) ... [2022-02-15 13:01:41,916 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "concurrent_increment.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.02 01:01:41" (1/1) ... [2022-02-15 13:01:41,916 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "concurrent_increment.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.02 01:01:41" (1/1) ... [2022-02-15 13:01:41,917 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "concurrent_increment.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.02 01:01:41" (1/1) ... [2022-02-15 13:01:41,919 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "concurrent_increment.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.02 01:01:41" (1/1) ... [2022-02-15 13:01:41,920 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "concurrent_increment.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.02 01:01:41" (1/1) ... [2022-02-15 13:01:41,921 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-15 13:01:41,922 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-15 13:01:41,922 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-15 13:01:41,922 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-15 13:01:41,923 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "concurrent_increment.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.02 01:01:41" (1/1) ... [2022-02-15 13:01:41,936 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-15 13:01:41,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:01:41,957 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) [2022-02-15 13:01:41,981 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 [2022-02-15 13:01:41,994 INFO L124 BoogieDeclarations]: Specification and implementation of procedure dec given in one single declaration [2022-02-15 13:01:41,994 INFO L130 BoogieDeclarations]: Found specification of procedure dec [2022-02-15 13:01:41,994 INFO L138 BoogieDeclarations]: Found implementation of procedure dec [2022-02-15 13:01:41,994 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-02-15 13:01:41,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-15 13:01:41,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-15 13:01:41,995 INFO L124 BoogieDeclarations]: Specification and implementation of procedure inc given in one single declaration [2022-02-15 13:01:41,995 INFO L130 BoogieDeclarations]: Found specification of procedure inc [2022-02-15 13:01:41,995 INFO L138 BoogieDeclarations]: Found implementation of procedure inc [2022-02-15 13:01:41,996 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-02-15 13:01:42,042 INFO L234 CfgBuilder]: Building ICFG [2022-02-15 13:01:42,043 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-15 13:01:42,146 INFO L275 CfgBuilder]: Performing block encoding [2022-02-15 13:01:42,153 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-15 13:01:42,154 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-02-15 13:01:42,155 INFO L202 PluginConnector]: Adding new model concurrent_increment.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 01:01:42 BoogieIcfgContainer [2022-02-15 13:01:42,156 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-15 13:01:42,158 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-15 13:01:42,160 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-15 13:01:42,162 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-15 13:01:42,163 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "concurrent_increment.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.02 01:01:41" (1/2) ... [2022-02-15 13:01:42,163 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@569dba66 and model type concurrent_increment.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 01:01:42, skipping insertion in model container [2022-02-15 13:01:42,164 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "concurrent_increment.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 01:01:42" (2/2) ... [2022-02-15 13:01:42,165 INFO L111 eAbstractionObserver]: Analyzing ICFG concurrent_increment.bpl [2022-02-15 13:01:42,175 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-02-15 13:01:42,175 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-15 13:01:42,175 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-15 13:01:42,175 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-02-15 13:01:42,214 WARN L322 ript$VariableManager]: TermVariabe decThread1of1ForFork1_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 13:01:42,214 WARN L322 ript$VariableManager]: TermVariabe decThread1of1ForFork1_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 13:01:42,214 WARN L322 ript$VariableManager]: TermVariabe decThread1of1ForFork1_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 13:01:42,215 WARN L322 ript$VariableManager]: TermVariabe decThread1of1ForFork1_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 13:01:42,215 WARN L322 ript$VariableManager]: TermVariabe decThread1of1ForFork1_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 13:01:42,215 WARN L322 ript$VariableManager]: TermVariabe decThread1of1ForFork1_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 13:01:42,216 WARN L322 ript$VariableManager]: TermVariabe decThread1of1ForFork1_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 13:01:42,216 WARN L322 ript$VariableManager]: TermVariabe decThread1of1ForFork1_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 13:01:42,216 WARN L322 ript$VariableManager]: TermVariabe decThread1of1ForFork1_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 13:01:42,216 WARN L322 ript$VariableManager]: TermVariabe decThread1of1ForFork1_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 13:01:42,217 WARN L322 ript$VariableManager]: TermVariabe incThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 13:01:42,217 WARN L322 ript$VariableManager]: TermVariabe incThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 13:01:42,217 WARN L322 ript$VariableManager]: TermVariabe incThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 13:01:42,218 WARN L322 ript$VariableManager]: TermVariabe incThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 13:01:42,218 WARN L322 ript$VariableManager]: TermVariabe incThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 13:01:42,218 WARN L322 ript$VariableManager]: TermVariabe incThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 13:01:42,219 WARN L322 ript$VariableManager]: TermVariabe incThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 13:01:42,219 WARN L322 ript$VariableManager]: TermVariabe incThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 13:01:42,219 WARN L322 ript$VariableManager]: TermVariabe incThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 13:01:42,219 WARN L322 ript$VariableManager]: TermVariabe incThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 13:01:42,222 WARN L322 ript$VariableManager]: TermVariabe incThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 13:01:42,224 WARN L322 ript$VariableManager]: TermVariabe decThread1of1ForFork1_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 13:01:42,228 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-02-15 13:01:42,271 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-15 13:01:42,280 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 [2022-02-15 13:01:42,280 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-02-15 13:01:42,299 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 27 places, 22 transitions, 60 flow [2022-02-15 13:01:42,316 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) [2022-02-15 13:01:42,318 INFO L276 IsEmpty]: Start isEmpty. Operand 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) [2022-02-15 13:01:42,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-02-15 13:01:42,323 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:01:42,324 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:01:42,325 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:01:42,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:01:42,329 INFO L85 PathProgramCache]: Analyzing trace with hash 566903393, now seen corresponding path program 1 times [2022-02-15 13:01:42,334 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:01:42,334 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122475899] [2022-02-15 13:01:42,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:01:42,335 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:01:42,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:01:42,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:01:42,465 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:01:42,465 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122475899] [2022-02-15 13:01:42,465 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122475899] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:01:42,466 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:01:42,466 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-02-15 13:01:42,467 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236614105] [2022-02-15 13:01:42,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:01:42,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-15 13:01:42,471 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:01:42,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-15 13:01:42,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-15 13:01:42,496 INFO L87 Difference]: Start difference. First operand 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) 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) [2022-02-15 13:01:42,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:01:42,551 INFO L93 Difference]: Finished difference Result 86 states and 167 transitions. [2022-02-15 13:01:42,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-15 13:01:42,553 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 [2022-02-15 13:01:42,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:01:42,560 INFO L225 Difference]: With dead ends: 86 [2022-02-15 13:01:42,560 INFO L226 Difference]: Without dead ends: 79 [2022-02-15 13:01:42,561 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 [2022-02-15 13:01:42,564 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 2 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 13:01:42,565 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 22 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 13:01:42,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-02-15 13:01:42,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 68. [2022-02-15 13:01:42,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 1.9701492537313432) internal successors, (132), 67 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:01:42,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 132 transitions. [2022-02-15 13:01:42,626 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 132 transitions. Word has length 12 [2022-02-15 13:01:42,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:01:42,626 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 132 transitions. [2022-02-15 13:01:42,626 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) [2022-02-15 13:01:42,626 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 132 transitions. [2022-02-15 13:01:42,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-02-15 13:01:42,627 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:01:42,627 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:01:42,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-15 13:01:42,628 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:01:42,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:01:42,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1642609806, now seen corresponding path program 1 times [2022-02-15 13:01:42,629 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:01:42,629 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812694007] [2022-02-15 13:01:42,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:01:42,630 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:01:42,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:01:42,674 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:01:42,674 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:01:42,674 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812694007] [2022-02-15 13:01:42,675 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812694007] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:01:42,675 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [469826547] [2022-02-15 13:01:42,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:01:42,675 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:01:42,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:01:42,677 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) [2022-02-15 13:01:42,678 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-02-15 13:01:42,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:01:42,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 4 conjunts are in the unsatisfiable core [2022-02-15 13:01:42,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:01:42,833 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:01:42,834 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:01:42,878 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:01:42,878 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [469826547] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:01:42,878 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:01:42,878 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2022-02-15 13:01:42,879 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201430014] [2022-02-15 13:01:42,879 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:01:42,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-15 13:01:42,880 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:01:42,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-15 13:01:42,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-02-15 13:01:42,881 INFO L87 Difference]: Start difference. First operand 68 states and 132 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 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) [2022-02-15 13:01:43,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:01:43,020 INFO L93 Difference]: Finished difference Result 108 states and 210 transitions. [2022-02-15 13:01:43,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-15 13:01:43,021 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 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 15 [2022-02-15 13:01:43,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:01:43,022 INFO L225 Difference]: With dead ends: 108 [2022-02-15 13:01:43,023 INFO L226 Difference]: Without dead ends: 108 [2022-02-15 13:01:43,023 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 [2022-02-15 13:01:43,024 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 35 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:01:43,025 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 59 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 13:01:43,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2022-02-15 13:01:43,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 66. [2022-02-15 13:01:43,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 2.0153846153846153) internal successors, (131), 65 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:01:43,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 131 transitions. [2022-02-15 13:01:43,036 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 131 transitions. Word has length 15 [2022-02-15 13:01:43,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:01:43,037 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 131 transitions. [2022-02-15 13:01:43,037 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 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) [2022-02-15 13:01:43,037 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 131 transitions. [2022-02-15 13:01:43,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-02-15 13:01:43,038 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:01:43,038 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:01:43,063 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-02-15 13:01:43,238 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 [2022-02-15 13:01:43,239 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:01:43,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:01:43,240 INFO L85 PathProgramCache]: Analyzing trace with hash -119292156, now seen corresponding path program 1 times [2022-02-15 13:01:43,240 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:01:43,240 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856032003] [2022-02-15 13:01:43,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:01:43,240 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:01:43,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:01:43,281 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:01:43,281 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:01:43,281 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856032003] [2022-02-15 13:01:43,281 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856032003] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:01:43,281 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:01:43,282 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-15 13:01:43,282 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182529183] [2022-02-15 13:01:43,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:01:43,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-15 13:01:43,282 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:01:43,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-15 13:01:43,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-15 13:01:43,283 INFO L87 Difference]: Start difference. First operand 66 states and 131 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) [2022-02-15 13:01:43,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:01:43,368 INFO L93 Difference]: Finished difference Result 115 states and 220 transitions. [2022-02-15 13:01:43,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-15 13:01:43,369 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 [2022-02-15 13:01:43,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:01:43,370 INFO L225 Difference]: With dead ends: 115 [2022-02-15 13:01:43,370 INFO L226 Difference]: Without dead ends: 107 [2022-02-15 13:01:43,370 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 [2022-02-15 13:01:43,371 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 38 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:01:43,372 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 59 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 13:01:43,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2022-02-15 13:01:43,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 66. [2022-02-15 13:01:43,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.9846153846153847) internal successors, (129), 65 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:01:43,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 129 transitions. [2022-02-15 13:01:43,379 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 129 transitions. Word has length 15 [2022-02-15 13:01:43,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:01:43,380 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 129 transitions. [2022-02-15 13:01:43,380 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) [2022-02-15 13:01:43,380 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 129 transitions. [2022-02-15 13:01:43,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-02-15 13:01:43,381 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:01:43,381 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:01:43,381 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-02-15 13:01:43,381 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:01:43,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:01:43,382 INFO L85 PathProgramCache]: Analyzing trace with hash 2125833014, now seen corresponding path program 2 times [2022-02-15 13:01:43,382 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:01:43,382 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788528314] [2022-02-15 13:01:43,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:01:43,382 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:01:43,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:01:43,442 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:01:43,443 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:01:43,443 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788528314] [2022-02-15 13:01:43,443 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788528314] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:01:43,443 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [746538745] [2022-02-15 13:01:43,443 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-15 13:01:43,444 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:01:43,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:01:43,448 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) [2022-02-15 13:01:43,463 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-02-15 13:01:43,477 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-15 13:01:43,477 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 13:01:43,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 4 conjunts are in the unsatisfiable core [2022-02-15 13:01:43,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:01:43,567 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:01:43,568 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:01:43,615 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:01:43,615 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [746538745] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:01:43,616 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:01:43,616 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2022-02-15 13:01:43,616 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245715807] [2022-02-15 13:01:43,616 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:01:43,617 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-15 13:01:43,617 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:01:43,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-15 13:01:43,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-02-15 13:01:43,618 INFO L87 Difference]: Start difference. First operand 66 states and 129 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:01:43,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:01:43,727 INFO L93 Difference]: Finished difference Result 159 states and 301 transitions. [2022-02-15 13:01:43,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-15 13:01:43,728 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 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 [2022-02-15 13:01:43,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:01:43,733 INFO L225 Difference]: With dead ends: 159 [2022-02-15 13:01:43,734 INFO L226 Difference]: Without dead ends: 159 [2022-02-15 13:01:43,735 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2022-02-15 13:01:43,739 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 49 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:01:43,740 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 87 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 13:01:43,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2022-02-15 13:01:43,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 70. [2022-02-15 13:01:43,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 69 states have (on average 2.028985507246377) internal successors, (140), 69 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:01:43,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 140 transitions. [2022-02-15 13:01:43,751 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 140 transitions. Word has length 15 [2022-02-15 13:01:43,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:01:43,752 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 140 transitions. [2022-02-15 13:01:43,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:01:43,752 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 140 transitions. [2022-02-15 13:01:43,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-02-15 13:01:43,753 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:01:43,753 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:01:43,776 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-02-15 13:01:43,967 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,SelfDestructingSolverStorable3 [2022-02-15 13:01:43,967 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:01:43,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:01:43,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1430480948, now seen corresponding path program 2 times [2022-02-15 13:01:43,968 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:01:43,968 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672007044] [2022-02-15 13:01:43,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:01:43,969 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:01:43,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:01:43,996 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:01:43,996 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:01:43,996 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672007044] [2022-02-15 13:01:43,997 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672007044] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:01:43,997 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:01:43,997 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-15 13:01:43,997 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461110930] [2022-02-15 13:01:43,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:01:43,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-15 13:01:43,998 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:01:43,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-15 13:01:43,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-15 13:01:43,998 INFO L87 Difference]: Start difference. First operand 70 states and 140 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) [2022-02-15 13:01:44,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:01:44,053 INFO L93 Difference]: Finished difference Result 109 states and 210 transitions. [2022-02-15 13:01:44,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-15 13:01:44,054 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 [2022-02-15 13:01:44,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:01:44,055 INFO L225 Difference]: With dead ends: 109 [2022-02-15 13:01:44,055 INFO L226 Difference]: Without dead ends: 107 [2022-02-15 13:01:44,055 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 [2022-02-15 13:01:44,056 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 50 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 13:01:44,057 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 45 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 13:01:44,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2022-02-15 13:01:44,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 79. [2022-02-15 13:01:44,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 78 states have (on average 2.0256410256410255) internal successors, (158), 78 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:01:44,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 158 transitions. [2022-02-15 13:01:44,064 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 158 transitions. Word has length 15 [2022-02-15 13:01:44,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:01:44,064 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 158 transitions. [2022-02-15 13:01:44,064 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) [2022-02-15 13:01:44,065 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 158 transitions. [2022-02-15 13:01:44,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-02-15 13:01:44,065 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:01:44,066 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:01:44,066 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-02-15 13:01:44,066 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:01:44,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:01:44,067 INFO L85 PathProgramCache]: Analyzing trace with hash -1165608656, now seen corresponding path program 3 times [2022-02-15 13:01:44,067 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:01:44,068 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273229459] [2022-02-15 13:01:44,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:01:44,068 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:01:44,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:01:44,103 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:01:44,103 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:01:44,103 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273229459] [2022-02-15 13:01:44,103 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273229459] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:01:44,104 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:01:44,104 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-15 13:01:44,104 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986760895] [2022-02-15 13:01:44,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:01:44,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-15 13:01:44,105 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:01:44,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-15 13:01:44,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-15 13:01:44,110 INFO L87 Difference]: Start difference. First operand 79 states and 158 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) [2022-02-15 13:01:44,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:01:44,178 INFO L93 Difference]: Finished difference Result 99 states and 196 transitions. [2022-02-15 13:01:44,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-15 13:01:44,178 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 [2022-02-15 13:01:44,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:01:44,179 INFO L225 Difference]: With dead ends: 99 [2022-02-15 13:01:44,179 INFO L226 Difference]: Without dead ends: 99 [2022-02-15 13:01:44,180 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 [2022-02-15 13:01:44,181 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 34 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 13:01:44,181 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 42 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 13:01:44,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2022-02-15 13:01:44,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 70. [2022-02-15 13:01:44,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 69 states have (on average 2.0144927536231885) internal successors, (139), 69 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:01:44,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 139 transitions. [2022-02-15 13:01:44,196 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 139 transitions. Word has length 15 [2022-02-15 13:01:44,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:01:44,196 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 139 transitions. [2022-02-15 13:01:44,196 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) [2022-02-15 13:01:44,196 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 139 transitions. [2022-02-15 13:01:44,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-02-15 13:01:44,197 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:01:44,197 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:01:44,197 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-02-15 13:01:44,197 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:01:44,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:01:44,198 INFO L85 PathProgramCache]: Analyzing trace with hash -813881904, now seen corresponding path program 3 times [2022-02-15 13:01:44,198 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:01:44,198 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635571920] [2022-02-15 13:01:44,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:01:44,198 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:01:44,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:01:44,231 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:01:44,231 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:01:44,232 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635571920] [2022-02-15 13:01:44,232 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635571920] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:01:44,232 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:01:44,232 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-15 13:01:44,232 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256411821] [2022-02-15 13:01:44,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:01:44,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-15 13:01:44,233 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:01:44,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-15 13:01:44,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-15 13:01:44,233 INFO L87 Difference]: Start difference. First operand 70 states and 139 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) [2022-02-15 13:01:44,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:01:44,298 INFO L93 Difference]: Finished difference Result 130 states and 249 transitions. [2022-02-15 13:01:44,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-15 13:01:44,301 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 [2022-02-15 13:01:44,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:01:44,302 INFO L225 Difference]: With dead ends: 130 [2022-02-15 13:01:44,302 INFO L226 Difference]: Without dead ends: 127 [2022-02-15 13:01:44,302 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-02-15 13:01:44,303 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 50 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 13:01:44,303 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 49 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 13:01:44,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2022-02-15 13:01:44,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 70. [2022-02-15 13:01:44,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 69 states have (on average 2.0) internal successors, (138), 69 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:01:44,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 138 transitions. [2022-02-15 13:01:44,308 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 138 transitions. Word has length 15 [2022-02-15 13:01:44,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:01:44,308 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 138 transitions. [2022-02-15 13:01:44,308 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) [2022-02-15 13:01:44,308 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 138 transitions. [2022-02-15 13:01:44,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-02-15 13:01:44,309 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:01:44,309 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:01:44,309 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-02-15 13:01:44,309 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:01:44,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:01:44,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1232814418, now seen corresponding path program 4 times [2022-02-15 13:01:44,310 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:01:44,310 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323826994] [2022-02-15 13:01:44,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:01:44,310 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:01:44,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:01:44,341 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:01:44,341 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:01:44,341 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323826994] [2022-02-15 13:01:44,342 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323826994] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:01:44,342 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1743683191] [2022-02-15 13:01:44,342 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-15 13:01:44,342 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:01:44,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:01:44,345 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) [2022-02-15 13:01:44,346 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-02-15 13:01:44,366 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-15 13:01:44,366 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 13:01:44,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 4 conjunts are in the unsatisfiable core [2022-02-15 13:01:44,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:01:44,408 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:01:44,408 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:01:44,439 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:01:44,439 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1743683191] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:01:44,439 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:01:44,439 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2022-02-15 13:01:44,440 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990249974] [2022-02-15 13:01:44,440 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:01:44,440 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-15 13:01:44,440 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:01:44,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-15 13:01:44,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-02-15 13:01:44,441 INFO L87 Difference]: Start difference. First operand 70 states and 138 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) [2022-02-15 13:01:44,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:01:44,512 INFO L93 Difference]: Finished difference Result 107 states and 209 transitions. [2022-02-15 13:01:44,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-15 13:01:44,513 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 [2022-02-15 13:01:44,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:01:44,513 INFO L225 Difference]: With dead ends: 107 [2022-02-15 13:01:44,513 INFO L226 Difference]: Without dead ends: 107 [2022-02-15 13:01:44,514 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 27 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-02-15 13:01:44,514 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 33 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 13:01:44,515 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 65 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 13:01:44,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2022-02-15 13:01:44,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 68. [2022-02-15 13:01:44,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 2.014925373134328) internal successors, (135), 67 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:01:44,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 135 transitions. [2022-02-15 13:01:44,518 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 135 transitions. Word has length 15 [2022-02-15 13:01:44,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:01:44,518 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 135 transitions. [2022-02-15 13:01:44,519 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) [2022-02-15 13:01:44,519 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 135 transitions. [2022-02-15 13:01:44,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-02-15 13:01:44,519 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:01:44,519 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:01:44,544 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-02-15 13:01:44,735 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 [2022-02-15 13:01:44,736 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:01:44,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:01:44,736 INFO L85 PathProgramCache]: Analyzing trace with hash 2136676334, now seen corresponding path program 4 times [2022-02-15 13:01:44,736 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:01:44,736 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369294785] [2022-02-15 13:01:44,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:01:44,737 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:01:44,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:01:44,762 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:01:44,762 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:01:44,762 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369294785] [2022-02-15 13:01:44,763 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369294785] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:01:44,763 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:01:44,763 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-15 13:01:44,763 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044910664] [2022-02-15 13:01:44,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:01:44,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-15 13:01:44,763 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:01:44,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-15 13:01:44,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-15 13:01:44,764 INFO L87 Difference]: Start difference. First operand 68 states and 135 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) [2022-02-15 13:01:44,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:01:44,807 INFO L93 Difference]: Finished difference Result 110 states and 212 transitions. [2022-02-15 13:01:44,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-15 13:01:44,808 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 [2022-02-15 13:01:44,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:01:44,808 INFO L225 Difference]: With dead ends: 110 [2022-02-15 13:01:44,808 INFO L226 Difference]: Without dead ends: 106 [2022-02-15 13:01:44,809 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 [2022-02-15 13:01:44,809 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 38 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 13:01:44,809 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 57 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 13:01:44,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2022-02-15 13:01:44,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 68. [2022-02-15 13:01:44,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 2.0) internal successors, (134), 67 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:01:44,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 134 transitions. [2022-02-15 13:01:44,813 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 134 transitions. Word has length 15 [2022-02-15 13:01:44,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:01:44,813 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 134 transitions. [2022-02-15 13:01:44,813 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) [2022-02-15 13:01:44,813 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 134 transitions. [2022-02-15 13:01:44,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-02-15 13:01:44,814 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:01:44,814 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:01:44,814 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-02-15 13:01:44,814 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:01:44,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:01:44,815 INFO L85 PathProgramCache]: Analyzing trace with hash -347841100, now seen corresponding path program 5 times [2022-02-15 13:01:44,815 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:01:44,815 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139199550] [2022-02-15 13:01:44,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:01:44,815 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:01:44,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:01:44,839 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:01:44,839 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:01:44,839 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139199550] [2022-02-15 13:01:44,839 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139199550] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:01:44,839 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [660555754] [2022-02-15 13:01:44,839 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-15 13:01:44,839 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:01:44,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:01:44,841 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) [2022-02-15 13:01:44,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-02-15 13:01:44,862 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-15 13:01:44,862 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 13:01:44,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 4 conjunts are in the unsatisfiable core [2022-02-15 13:01:44,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:01:44,918 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:01:44,919 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:01:44,946 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:01:44,947 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [660555754] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:01:44,947 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:01:44,947 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2022-02-15 13:01:44,947 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143877738] [2022-02-15 13:01:44,947 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:01:44,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-15 13:01:44,948 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:01:44,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-15 13:01:44,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-02-15 13:01:44,948 INFO L87 Difference]: Start difference. First operand 68 states and 134 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:01:45,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:01:45,021 INFO L93 Difference]: Finished difference Result 127 states and 242 transitions. [2022-02-15 13:01:45,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-15 13:01:45,021 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 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 [2022-02-15 13:01:45,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:01:45,022 INFO L225 Difference]: With dead ends: 127 [2022-02-15 13:01:45,022 INFO L226 Difference]: Without dead ends: 127 [2022-02-15 13:01:45,022 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-02-15 13:01:45,023 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 55 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 13:01:45,023 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 53 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 13:01:45,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2022-02-15 13:01:45,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 68. [2022-02-15 13:01:45,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 2.0) internal successors, (134), 67 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:01:45,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 134 transitions. [2022-02-15 13:01:45,026 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 134 transitions. Word has length 15 [2022-02-15 13:01:45,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:01:45,026 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 134 transitions. [2022-02-15 13:01:45,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:01:45,027 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 134 transitions. [2022-02-15 13:01:45,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-02-15 13:01:45,027 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:01:45,027 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:01:45,053 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-02-15 13:01:45,250 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:01:45,250 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:01:45,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:01:45,251 INFO L85 PathProgramCache]: Analyzing trace with hash -1043193166, now seen corresponding path program 5 times [2022-02-15 13:01:45,251 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:01:45,251 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242110356] [2022-02-15 13:01:45,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:01:45,251 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:01:45,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:01:45,279 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:01:45,279 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:01:45,280 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242110356] [2022-02-15 13:01:45,280 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242110356] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:01:45,280 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:01:45,280 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-15 13:01:45,280 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941129271] [2022-02-15 13:01:45,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:01:45,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-15 13:01:45,280 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:01:45,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-15 13:01:45,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-15 13:01:45,281 INFO L87 Difference]: Start difference. First operand 68 states and 134 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) [2022-02-15 13:01:45,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:01:45,341 INFO L93 Difference]: Finished difference Result 129 states and 246 transitions. [2022-02-15 13:01:45,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-15 13:01:45,341 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 [2022-02-15 13:01:45,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:01:45,343 INFO L225 Difference]: With dead ends: 129 [2022-02-15 13:01:45,343 INFO L226 Difference]: Without dead ends: 127 [2022-02-15 13:01:45,343 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-02-15 13:01:45,343 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 50 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 13:01:45,344 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 50 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 13:01:45,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2022-02-15 13:01:45,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 77. [2022-02-15 13:01:45,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 76 states have (on average 2.0) internal successors, (152), 76 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:01:45,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 152 transitions. [2022-02-15 13:01:45,349 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 152 transitions. Word has length 15 [2022-02-15 13:01:45,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:01:45,350 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 152 transitions. [2022-02-15 13:01:45,350 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) [2022-02-15 13:01:45,350 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 152 transitions. [2022-02-15 13:01:45,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-02-15 13:01:45,351 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:01:45,351 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:01:45,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-02-15 13:01:45,351 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:01:45,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:01:45,352 INFO L85 PathProgramCache]: Analyzing trace with hash 655684526, now seen corresponding path program 6 times [2022-02-15 13:01:45,352 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:01:45,352 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121710000] [2022-02-15 13:01:45,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:01:45,352 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:01:45,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:01:45,395 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:01:45,396 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:01:45,396 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121710000] [2022-02-15 13:01:45,396 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121710000] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:01:45,396 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:01:45,396 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-15 13:01:45,396 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124726746] [2022-02-15 13:01:45,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:01:45,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-15 13:01:45,397 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:01:45,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-15 13:01:45,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-15 13:01:45,397 INFO L87 Difference]: Start difference. First operand 77 states and 152 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) [2022-02-15 13:01:45,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:01:45,457 INFO L93 Difference]: Finished difference Result 113 states and 220 transitions. [2022-02-15 13:01:45,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-15 13:01:45,457 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 [2022-02-15 13:01:45,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:01:45,458 INFO L225 Difference]: With dead ends: 113 [2022-02-15 13:01:45,458 INFO L226 Difference]: Without dead ends: 113 [2022-02-15 13:01:45,458 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-02-15 13:01:45,459 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 42 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 13:01:45,459 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 55 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 13:01:45,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2022-02-15 13:01:45,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 68. [2022-02-15 13:01:45,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 1.9850746268656716) internal successors, (133), 67 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:01:45,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 133 transitions. [2022-02-15 13:01:45,462 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 133 transitions. Word has length 15 [2022-02-15 13:01:45,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:01:45,463 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 133 transitions. [2022-02-15 13:01:45,463 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) [2022-02-15 13:01:45,463 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 133 transitions. [2022-02-15 13:01:45,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-02-15 13:01:45,463 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:01:45,463 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:01:45,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-02-15 13:01:45,464 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:01:45,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:01:45,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1007411278, now seen corresponding path program 6 times [2022-02-15 13:01:45,464 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:01:45,464 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279852123] [2022-02-15 13:01:45,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:01:45,465 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:01:45,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:01:45,485 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:01:45,485 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:01:45,485 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279852123] [2022-02-15 13:01:45,486 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279852123] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:01:45,486 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:01:45,486 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-15 13:01:45,486 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680407798] [2022-02-15 13:01:45,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:01:45,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-15 13:01:45,486 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:01:45,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-15 13:01:45,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-15 13:01:45,487 INFO L87 Difference]: Start difference. First operand 68 states and 133 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) [2022-02-15 13:01:45,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:01:45,530 INFO L93 Difference]: Finished difference Result 88 states and 169 transitions. [2022-02-15 13:01:45,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-15 13:01:45,530 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 [2022-02-15 13:01:45,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:01:45,531 INFO L225 Difference]: With dead ends: 88 [2022-02-15 13:01:45,531 INFO L226 Difference]: Without dead ends: 85 [2022-02-15 13:01:45,531 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 [2022-02-15 13:01:45,532 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 37 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 13:01:45,532 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 50 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 13:01:45,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2022-02-15 13:01:45,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 67. [2022-02-15 13:01:45,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.9696969696969697) internal successors, (130), 66 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:01:45,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 130 transitions. [2022-02-15 13:01:45,535 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 130 transitions. Word has length 15 [2022-02-15 13:01:45,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:01:45,535 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 130 transitions. [2022-02-15 13:01:45,535 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) [2022-02-15 13:01:45,535 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 130 transitions. [2022-02-15 13:01:45,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-15 13:01:45,535 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:01:45,535 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:01:45,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-02-15 13:01:45,536 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:01:45,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:01:45,536 INFO L85 PathProgramCache]: Analyzing trace with hash 941774931, now seen corresponding path program 1 times [2022-02-15 13:01:45,536 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:01:45,536 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105173632] [2022-02-15 13:01:45,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:01:45,536 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:01:45,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:01:45,571 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:01:45,572 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:01:45,572 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105173632] [2022-02-15 13:01:45,572 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105173632] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:01:45,572 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1859819243] [2022-02-15 13:01:45,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:01:45,572 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:01:45,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:01:45,573 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) [2022-02-15 13:01:45,580 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-02-15 13:01:45,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:01:45,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-15 13:01:45,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:01:45,674 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:01:45,674 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:01:45,758 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:01:45,758 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1859819243] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:01:45,758 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:01:45,758 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2022-02-15 13:01:45,758 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625105103] [2022-02-15 13:01:45,758 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:01:45,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-15 13:01:45,759 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:01:45,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-15 13:01:45,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-15 13:01:45,759 INFO L87 Difference]: Start difference. First operand 67 states and 130 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) [2022-02-15 13:01:45,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:01:45,777 INFO L93 Difference]: Finished difference Result 152 states and 297 transitions. [2022-02-15 13:01:45,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-15 13:01:45,778 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 [2022-02-15 13:01:45,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:01:45,778 INFO L225 Difference]: With dead ends: 152 [2022-02-15 13:01:45,779 INFO L226 Difference]: Without dead ends: 145 [2022-02-15 13:01:45,779 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 [2022-02-15 13:01:45,779 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 13 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 13:01:45,779 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 53 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 13:01:45,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2022-02-15 13:01:45,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 121. [2022-02-15 13:01:45,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 120 states have (on average 2.066666666666667) internal successors, (248), 120 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:01:45,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 248 transitions. [2022-02-15 13:01:45,783 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 248 transitions. Word has length 18 [2022-02-15 13:01:45,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:01:45,783 INFO L470 AbstractCegarLoop]: Abstraction has 121 states and 248 transitions. [2022-02-15 13:01:45,783 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) [2022-02-15 13:01:45,784 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 248 transitions. [2022-02-15 13:01:45,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-15 13:01:45,784 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:01:45,784 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:01:45,809 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-02-15 13:01:46,006 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,SelfDestructingSolverStorable13 [2022-02-15 13:01:46,007 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:01:46,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:01:46,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1874489217, now seen corresponding path program 2 times [2022-02-15 13:01:46,008 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:01:46,008 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438337301] [2022-02-15 13:01:46,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:01:46,008 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:01:46,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:01:46,056 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-15 13:01:46,056 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:01:46,056 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438337301] [2022-02-15 13:01:46,056 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438337301] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:01:46,056 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [312046756] [2022-02-15 13:01:46,056 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-15 13:01:46,057 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:01:46,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:01:46,058 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) [2022-02-15 13:01:46,078 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-02-15 13:01:46,086 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-15 13:01:46,086 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 13:01:46,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-15 13:01:46,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:01:46,155 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-15 13:01:46,155 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:01:46,226 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-15 13:01:46,227 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [312046756] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:01:46,227 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:01:46,227 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2022-02-15 13:01:46,227 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102074126] [2022-02-15 13:01:46,227 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:01:46,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-15 13:01:46,228 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:01:46,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-15 13:01:46,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-15 13:01:46,228 INFO L87 Difference]: Start difference. First operand 121 states and 248 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) [2022-02-15 13:01:46,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:01:46,246 INFO L93 Difference]: Finished difference Result 195 states and 393 transitions. [2022-02-15 13:01:46,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-15 13:01:46,249 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 [2022-02-15 13:01:46,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:01:46,250 INFO L225 Difference]: With dead ends: 195 [2022-02-15 13:01:46,250 INFO L226 Difference]: Without dead ends: 188 [2022-02-15 13:01:46,250 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 [2022-02-15 13:01:46,251 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 12 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 13:01:46,251 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 55 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 13:01:46,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2022-02-15 13:01:46,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 156. [2022-02-15 13:01:46,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 155 states have (on average 2.1225806451612903) internal successors, (329), 155 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:01:46,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 329 transitions. [2022-02-15 13:01:46,257 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 329 transitions. Word has length 18 [2022-02-15 13:01:46,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:01:46,257 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 329 transitions. [2022-02-15 13:01:46,257 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) [2022-02-15 13:01:46,257 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 329 transitions. [2022-02-15 13:01:46,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-15 13:01:46,259 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:01:46,259 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:01:46,285 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-02-15 13:01:46,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-02-15 13:01:46,475 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:01:46,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:01:46,475 INFO L85 PathProgramCache]: Analyzing trace with hash 232065188, now seen corresponding path program 3 times [2022-02-15 13:01:46,475 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:01:46,475 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728615654] [2022-02-15 13:01:46,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:01:46,476 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:01:46,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:01:46,511 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:01:46,512 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:01:46,512 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728615654] [2022-02-15 13:01:46,512 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728615654] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:01:46,512 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1170727446] [2022-02-15 13:01:46,512 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-15 13:01:46,512 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:01:46,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:01:46,513 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) [2022-02-15 13:01:46,534 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-02-15 13:01:46,544 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-15 13:01:46,544 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 13:01:46,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 6 conjunts are in the unsatisfiable core [2022-02-15 13:01:46,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:01:46,608 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:01:46,608 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:01:46,654 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:01:46,655 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1170727446] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:01:46,655 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:01:46,655 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2022-02-15 13:01:46,655 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855729791] [2022-02-15 13:01:46,655 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:01:46,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-15 13:01:46,656 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:01:46,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-15 13:01:46,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-02-15 13:01:46,656 INFO L87 Difference]: Start difference. First operand 156 states and 329 transitions. Second operand has 9 states, 9 states have (on average 3.0) internal successors, (27), 9 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) [2022-02-15 13:01:46,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:01:46,776 INFO L93 Difference]: Finished difference Result 303 states and 631 transitions. [2022-02-15 13:01:46,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-15 13:01:46,776 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.0) internal successors, (27), 9 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 [2022-02-15 13:01:46,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:01:46,778 INFO L225 Difference]: With dead ends: 303 [2022-02-15 13:01:46,778 INFO L226 Difference]: Without dead ends: 303 [2022-02-15 13:01:46,778 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 [2022-02-15 13:01:46,779 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 55 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:01:46,779 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 112 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 13:01:46,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2022-02-15 13:01:46,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 170. [2022-02-15 13:01:46,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 169 states have (on average 2.1420118343195265) internal successors, (362), 169 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:01:46,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 362 transitions. [2022-02-15 13:01:46,786 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 362 transitions. Word has length 21 [2022-02-15 13:01:46,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:01:46,788 INFO L470 AbstractCegarLoop]: Abstraction has 170 states and 362 transitions. [2022-02-15 13:01:46,788 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.0) internal successors, (27), 9 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) [2022-02-15 13:01:46,788 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 362 transitions. [2022-02-15 13:01:46,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-15 13:01:46,789 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:01:46,789 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:01:46,811 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-02-15 13:01:47,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:01:47,003 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:01:47,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:01:47,004 INFO L85 PathProgramCache]: Analyzing trace with hash 763726802, now seen corresponding path program 4 times [2022-02-15 13:01:47,004 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:01:47,004 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521513635] [2022-02-15 13:01:47,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:01:47,004 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:01:47,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:01:47,040 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:01:47,041 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:01:47,041 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521513635] [2022-02-15 13:01:47,041 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521513635] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:01:47,041 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1084989790] [2022-02-15 13:01:47,041 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-15 13:01:47,041 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:01:47,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:01:47,042 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) [2022-02-15 13:01:47,058 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-02-15 13:01:47,070 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-15 13:01:47,071 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 13:01:47,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 6 conjunts are in the unsatisfiable core [2022-02-15 13:01:47,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:01:47,137 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:01:47,137 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:01:47,176 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:01:47,176 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1084989790] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:01:47,176 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:01:47,176 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2022-02-15 13:01:47,176 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622501996] [2022-02-15 13:01:47,176 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:01:47,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-15 13:01:47,177 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:01:47,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-15 13:01:47,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-02-15 13:01:47,177 INFO L87 Difference]: Start difference. First operand 170 states and 362 transitions. Second operand has 9 states, 9 states have (on average 3.0) internal successors, (27), 9 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) [2022-02-15 13:01:47,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:01:47,264 INFO L93 Difference]: Finished difference Result 313 states and 651 transitions. [2022-02-15 13:01:47,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-15 13:01:47,265 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.0) internal successors, (27), 9 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 [2022-02-15 13:01:47,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:01:47,266 INFO L225 Difference]: With dead ends: 313 [2022-02-15 13:01:47,266 INFO L226 Difference]: Without dead ends: 296 [2022-02-15 13:01:47,266 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2022-02-15 13:01:47,267 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 81 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 13:01:47,268 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 92 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 13:01:47,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2022-02-15 13:01:47,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 170. [2022-02-15 13:01:47,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 169 states have (on average 2.1301775147928996) internal successors, (360), 169 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:01:47,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 360 transitions. [2022-02-15 13:01:47,280 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 360 transitions. Word has length 21 [2022-02-15 13:01:47,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:01:47,280 INFO L470 AbstractCegarLoop]: Abstraction has 170 states and 360 transitions. [2022-02-15 13:01:47,280 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.0) internal successors, (27), 9 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) [2022-02-15 13:01:47,280 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 360 transitions. [2022-02-15 13:01:47,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-15 13:01:47,281 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:01:47,281 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:01:47,300 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-02-15 13:01:47,491 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,SelfDestructingSolverStorable16 [2022-02-15 13:01:47,492 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:01:47,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:01:47,492 INFO L85 PathProgramCache]: Analyzing trace with hash -1396988786, now seen corresponding path program 5 times [2022-02-15 13:01:47,492 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:01:47,492 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302935304] [2022-02-15 13:01:47,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:01:47,492 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:01:47,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:01:47,522 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:01:47,522 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:01:47,522 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302935304] [2022-02-15 13:01:47,522 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302935304] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:01:47,522 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2052864815] [2022-02-15 13:01:47,523 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-15 13:01:47,523 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:01:47,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:01:47,524 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) [2022-02-15 13:01:47,531 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-02-15 13:01:47,549 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-15 13:01:47,550 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 13:01:47,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 6 conjunts are in the unsatisfiable core [2022-02-15 13:01:47,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:01:47,630 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:01:47,630 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:01:47,668 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:01:47,668 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2052864815] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:01:47,668 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:01:47,668 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-02-15 13:01:47,668 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471156889] [2022-02-15 13:01:47,668 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:01:47,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-15 13:01:47,669 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:01:47,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-15 13:01:47,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-02-15 13:01:47,669 INFO L87 Difference]: Start difference. First operand 170 states and 360 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) [2022-02-15 13:01:47,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:01:47,909 INFO L93 Difference]: Finished difference Result 650 states and 1332 transitions. [2022-02-15 13:01:47,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-02-15 13:01:47,909 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 [2022-02-15 13:01:47,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:01:47,912 INFO L225 Difference]: With dead ends: 650 [2022-02-15 13:01:47,912 INFO L226 Difference]: Without dead ends: 650 [2022-02-15 13:01:47,913 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=200, Invalid=400, Unknown=0, NotChecked=0, Total=600 [2022-02-15 13:01:47,913 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 152 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:01:47,914 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [152 Valid, 121 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 13:01:47,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 650 states. [2022-02-15 13:01:47,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 650 to 289. [2022-02-15 13:01:47,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 288 states have (on average 2.267361111111111) internal successors, (653), 288 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:01:47,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 653 transitions. [2022-02-15 13:01:47,924 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 653 transitions. Word has length 21 [2022-02-15 13:01:47,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:01:47,924 INFO L470 AbstractCegarLoop]: Abstraction has 289 states and 653 transitions. [2022-02-15 13:01:47,925 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) [2022-02-15 13:01:47,925 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 653 transitions. [2022-02-15 13:01:47,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-15 13:01:47,925 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:01:47,926 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:01:47,951 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-02-15 13:01:48,139 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,SelfDestructingSolverStorable17 [2022-02-15 13:01:48,139 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:01:48,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:01:48,140 INFO L85 PathProgramCache]: Analyzing trace with hash -2092340852, now seen corresponding path program 6 times [2022-02-15 13:01:48,140 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:01:48,140 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655832830] [2022-02-15 13:01:48,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:01:48,140 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:01:48,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:01:48,173 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:01:48,173 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:01:48,173 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655832830] [2022-02-15 13:01:48,173 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655832830] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:01:48,173 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1060299370] [2022-02-15 13:01:48,174 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-15 13:01:48,174 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:01:48,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:01:48,175 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) [2022-02-15 13:01:48,176 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-02-15 13:01:48,197 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-15 13:01:48,198 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 13:01:48,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 6 conjunts are in the unsatisfiable core [2022-02-15 13:01:48,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:01:48,263 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:01:48,263 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:01:48,299 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:01:48,300 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1060299370] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:01:48,300 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:01:48,300 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-02-15 13:01:48,302 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54599505] [2022-02-15 13:01:48,302 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:01:48,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-15 13:01:48,303 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:01:48,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-15 13:01:48,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-02-15 13:01:48,303 INFO L87 Difference]: Start difference. First operand 289 states and 653 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) [2022-02-15 13:01:48,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:01:48,501 INFO L93 Difference]: Finished difference Result 660 states and 1419 transitions. [2022-02-15 13:01:48,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-15 13:01:48,501 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 [2022-02-15 13:01:48,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:01:48,504 INFO L225 Difference]: With dead ends: 660 [2022-02-15 13:01:48,504 INFO L226 Difference]: Without dead ends: 656 [2022-02-15 13:01:48,504 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=168, Invalid=294, Unknown=0, NotChecked=0, Total=462 [2022-02-15 13:01:48,505 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 129 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:01:48,506 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [129 Valid, 130 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 13:01:48,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2022-02-15 13:01:48,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 371. [2022-02-15 13:01:48,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 370 states have (on average 2.3135135135135134) internal successors, (856), 370 states have internal predecessors, (856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:01:48,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 856 transitions. [2022-02-15 13:01:48,518 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 856 transitions. Word has length 21 [2022-02-15 13:01:48,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:01:48,518 INFO L470 AbstractCegarLoop]: Abstraction has 371 states and 856 transitions. [2022-02-15 13:01:48,518 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) [2022-02-15 13:01:48,518 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 856 transitions. [2022-02-15 13:01:48,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-15 13:01:48,519 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:01:48,519 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:01:48,543 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-02-15 13:01:48,741 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:01:48,741 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:01:48,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:01:48,741 INFO L85 PathProgramCache]: Analyzing trace with hash -393463160, now seen corresponding path program 7 times [2022-02-15 13:01:48,741 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:01:48,742 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132386267] [2022-02-15 13:01:48,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:01:48,742 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:01:48,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:01:48,773 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:01:48,773 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:01:48,773 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132386267] [2022-02-15 13:01:48,773 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132386267] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:01:48,774 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1729604559] [2022-02-15 13:01:48,774 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-15 13:01:48,774 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:01:48,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:01:48,775 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) [2022-02-15 13:01:48,782 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-02-15 13:01:48,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:01:48,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 6 conjunts are in the unsatisfiable core [2022-02-15 13:01:48,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:01:48,885 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:01:48,885 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:01:48,934 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:01:48,935 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1729604559] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:01:48,935 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:01:48,935 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-02-15 13:01:48,935 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531788383] [2022-02-15 13:01:48,935 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:01:48,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-15 13:01:48,935 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:01:48,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-15 13:01:48,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-02-15 13:01:48,936 INFO L87 Difference]: Start difference. First operand 371 states and 856 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) [2022-02-15 13:01:49,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:01:49,182 INFO L93 Difference]: Finished difference Result 716 states and 1527 transitions. [2022-02-15 13:01:49,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-02-15 13:01:49,183 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 [2022-02-15 13:01:49,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:01:49,186 INFO L225 Difference]: With dead ends: 716 [2022-02-15 13:01:49,186 INFO L226 Difference]: Without dead ends: 716 [2022-02-15 13:01:49,186 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=215, Invalid=385, Unknown=0, NotChecked=0, Total=600 [2022-02-15 13:01:49,187 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 109 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:01:49,187 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 137 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 13:01:49,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2022-02-15 13:01:49,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 371. [2022-02-15 13:01:49,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 370 states have (on average 2.308108108108108) internal successors, (854), 370 states have internal predecessors, (854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:01:49,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 854 transitions. [2022-02-15 13:01:49,198 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 854 transitions. Word has length 21 [2022-02-15 13:01:49,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:01:49,198 INFO L470 AbstractCegarLoop]: Abstraction has 371 states and 854 transitions. [2022-02-15 13:01:49,198 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) [2022-02-15 13:01:49,198 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 854 transitions. [2022-02-15 13:01:49,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-15 13:01:49,199 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:01:49,199 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:01:49,227 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-02-15 13:01:49,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:01:49,421 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:01:49,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:01:49,421 INFO L85 PathProgramCache]: Analyzing trace with hash -41736408, now seen corresponding path program 8 times [2022-02-15 13:01:49,421 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:01:49,421 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809239707] [2022-02-15 13:01:49,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:01:49,422 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:01:49,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:01:49,458 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:01:49,458 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:01:49,458 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809239707] [2022-02-15 13:01:49,458 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809239707] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:01:49,458 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1839679407] [2022-02-15 13:01:49,458 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-15 13:01:49,459 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:01:49,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:01:49,460 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) [2022-02-15 13:01:49,460 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-02-15 13:01:49,479 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-15 13:01:49,479 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 13:01:49,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 6 conjunts are in the unsatisfiable core [2022-02-15 13:01:49,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:01:49,557 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:01:49,558 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:01:49,599 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:01:49,599 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1839679407] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:01:49,599 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:01:49,599 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-02-15 13:01:49,599 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932986113] [2022-02-15 13:01:49,600 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:01:49,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-15 13:01:49,600 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:01:49,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-15 13:01:49,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-02-15 13:01:49,600 INFO L87 Difference]: Start difference. First operand 371 states and 854 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) [2022-02-15 13:01:49,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:01:49,824 INFO L93 Difference]: Finished difference Result 740 states and 1552 transitions. [2022-02-15 13:01:49,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-15 13:01:49,825 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 [2022-02-15 13:01:49,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:01:49,828 INFO L225 Difference]: With dead ends: 740 [2022-02-15 13:01:49,828 INFO L226 Difference]: Without dead ends: 734 [2022-02-15 13:01:49,828 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=139, Invalid=323, Unknown=0, NotChecked=0, Total=462 [2022-02-15 13:01:49,829 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 145 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:01:49,829 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [145 Valid, 115 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 13:01:49,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 734 states. [2022-02-15 13:01:49,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 734 to 374. [2022-02-15 13:01:49,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 373 states have (on average 2.292225201072386) internal successors, (855), 373 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:01:49,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 855 transitions. [2022-02-15 13:01:49,844 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 855 transitions. Word has length 21 [2022-02-15 13:01:49,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:01:49,844 INFO L470 AbstractCegarLoop]: Abstraction has 374 states and 855 transitions. [2022-02-15 13:01:49,844 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) [2022-02-15 13:01:49,844 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 855 transitions. [2022-02-15 13:01:49,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-15 13:01:49,846 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:01:49,846 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:01:49,870 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-02-15 13:01:50,067 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,SelfDestructingSolverStorable20 [2022-02-15 13:01:50,068 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:01:50,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:01:50,068 INFO L85 PathProgramCache]: Analyzing trace with hash -548082674, now seen corresponding path program 9 times [2022-02-15 13:01:50,068 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:01:50,068 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210620902] [2022-02-15 13:01:50,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:01:50,069 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:01:50,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:01:50,106 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:01:50,107 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:01:50,107 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210620902] [2022-02-15 13:01:50,107 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210620902] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:01:50,107 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [20820116] [2022-02-15 13:01:50,107 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-15 13:01:50,107 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:01:50,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:01:50,108 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) [2022-02-15 13:01:50,137 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-15 13:01:50,137 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 13:01:50,137 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-02-15 13:01:50,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 6 conjunts are in the unsatisfiable core [2022-02-15 13:01:50,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:01:50,200 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:01:50,200 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:01:50,233 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:01:50,234 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [20820116] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:01:50,234 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:01:50,234 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-02-15 13:01:50,234 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792199157] [2022-02-15 13:01:50,234 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:01:50,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-15 13:01:50,234 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:01:50,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-15 13:01:50,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-02-15 13:01:50,235 INFO L87 Difference]: Start difference. First operand 374 states and 855 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) [2022-02-15 13:01:50,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:01:50,390 INFO L93 Difference]: Finished difference Result 623 states and 1353 transitions. [2022-02-15 13:01:50,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-15 13:01:50,391 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 [2022-02-15 13:01:50,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:01:50,393 INFO L225 Difference]: With dead ends: 623 [2022-02-15 13:01:50,393 INFO L226 Difference]: Without dead ends: 611 [2022-02-15 13:01:50,394 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=113, Invalid=267, Unknown=0, NotChecked=0, Total=380 [2022-02-15 13:01:50,394 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 79 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:01:50,394 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 101 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 13:01:50,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2022-02-15 13:01:50,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 378. [2022-02-15 13:01:50,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 377 states have (on average 2.2811671087533156) internal successors, (860), 377 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:01:50,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 860 transitions. [2022-02-15 13:01:50,405 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 860 transitions. Word has length 21 [2022-02-15 13:01:50,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:01:50,405 INFO L470 AbstractCegarLoop]: Abstraction has 378 states and 860 transitions. [2022-02-15 13:01:50,406 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) [2022-02-15 13:01:50,406 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 860 transitions. [2022-02-15 13:01:50,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-15 13:01:50,407 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:01:50,407 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:01:50,429 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-02-15 13:01:50,619 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,SelfDestructingSolverStorable21 [2022-02-15 13:01:50,620 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:01:50,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:01:50,620 INFO L85 PathProgramCache]: Analyzing trace with hash -876569702, now seen corresponding path program 10 times [2022-02-15 13:01:50,620 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:01:50,620 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681251328] [2022-02-15 13:01:50,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:01:50,620 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:01:50,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:01:50,650 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:01:50,650 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:01:50,650 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681251328] [2022-02-15 13:01:50,650 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681251328] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:01:50,650 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919807123] [2022-02-15 13:01:50,650 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-15 13:01:50,650 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:01:50,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:01:50,651 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) [2022-02-15 13:01:50,678 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-15 13:01:50,678 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 13:01:50,678 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-02-15 13:01:50,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 6 conjunts are in the unsatisfiable core [2022-02-15 13:01:50,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:01:50,756 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:01:50,757 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:01:50,795 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:01:50,796 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [919807123] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:01:50,796 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:01:50,796 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-02-15 13:01:50,796 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948069043] [2022-02-15 13:01:50,796 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:01:50,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-15 13:01:50,796 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:01:50,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-15 13:01:50,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-02-15 13:01:50,797 INFO L87 Difference]: Start difference. First operand 378 states and 860 transitions. Second operand has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 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) [2022-02-15 13:01:51,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:01:51,022 INFO L93 Difference]: Finished difference Result 832 states and 1809 transitions. [2022-02-15 13:01:51,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-15 13:01:51,022 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 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 21 [2022-02-15 13:01:51,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:01:51,026 INFO L225 Difference]: With dead ends: 832 [2022-02-15 13:01:51,026 INFO L226 Difference]: Without dead ends: 814 [2022-02-15 13:01:51,026 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=198, Invalid=402, Unknown=0, NotChecked=0, Total=600 [2022-02-15 13:01:51,027 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 151 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:01:51,027 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [151 Valid, 117 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 13:01:51,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 814 states. [2022-02-15 13:01:51,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 814 to 497. [2022-02-15 13:01:51,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 497 states, 496 states have (on average 2.3245967741935485) internal successors, (1153), 496 states have internal predecessors, (1153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:01:51,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 1153 transitions. [2022-02-15 13:01:51,041 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 1153 transitions. Word has length 21 [2022-02-15 13:01:51,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:01:51,041 INFO L470 AbstractCegarLoop]: Abstraction has 497 states and 1153 transitions. [2022-02-15 13:01:51,042 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 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) [2022-02-15 13:01:51,042 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 1153 transitions. [2022-02-15 13:01:51,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-15 13:01:51,043 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:01:51,043 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:01:51,065 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-02-15 13:01:51,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:01:51,265 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:01:51,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:01:51,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1989921306, now seen corresponding path program 11 times [2022-02-15 13:01:51,266 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:01:51,266 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325608272] [2022-02-15 13:01:51,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:01:51,266 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:01:51,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:01:51,295 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:01:51,295 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:01:51,295 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325608272] [2022-02-15 13:01:51,296 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325608272] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:01:51,296 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [380158301] [2022-02-15 13:01:51,296 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-15 13:01:51,296 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:01:51,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:01:51,297 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) [2022-02-15 13:01:51,298 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-02-15 13:01:51,318 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-15 13:01:51,318 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 13:01:51,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 6 conjunts are in the unsatisfiable core [2022-02-15 13:01:51,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:01:51,409 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:01:51,410 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:01:51,450 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:01:51,451 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [380158301] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:01:51,451 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:01:51,451 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 6] total 10 [2022-02-15 13:01:51,451 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867523486] [2022-02-15 13:01:51,451 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:01:51,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-15 13:01:51,451 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:01:51,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-15 13:01:51,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-02-15 13:01:51,452 INFO L87 Difference]: Start difference. First operand 497 states and 1153 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) [2022-02-15 13:01:51,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:01:51,682 INFO L93 Difference]: Finished difference Result 983 states and 2161 transitions. [2022-02-15 13:01:51,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-15 13:01:51,682 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 [2022-02-15 13:01:51,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:01:51,686 INFO L225 Difference]: With dead ends: 983 [2022-02-15 13:01:51,686 INFO L226 Difference]: Without dead ends: 983 [2022-02-15 13:01:51,686 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=185, Invalid=321, Unknown=0, NotChecked=0, Total=506 [2022-02-15 13:01:51,686 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 102 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:01:51,687 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 135 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 13:01:51,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 983 states. [2022-02-15 13:01:51,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 983 to 647. [2022-02-15 13:01:51,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 647 states, 646 states have (on average 2.3328173374613) internal successors, (1507), 646 states have internal predecessors, (1507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:01:51,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 1507 transitions. [2022-02-15 13:01:51,706 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 1507 transitions. Word has length 21 [2022-02-15 13:01:51,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:01:51,706 INFO L470 AbstractCegarLoop]: Abstraction has 647 states and 1507 transitions. [2022-02-15 13:01:51,706 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) [2022-02-15 13:01:51,706 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 1507 transitions. [2022-02-15 13:01:51,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-15 13:01:51,707 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:01:51,707 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:01:51,734 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-02-15 13:01:51,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:01:51,923 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:01:51,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:01:51,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1787719246, now seen corresponding path program 12 times [2022-02-15 13:01:51,924 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:01:51,924 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672474449] [2022-02-15 13:01:51,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:01:51,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:01:51,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:01:51,955 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:01:51,955 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:01:51,955 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672474449] [2022-02-15 13:01:51,955 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672474449] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:01:51,955 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140171394] [2022-02-15 13:01:51,955 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-15 13:01:51,955 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:01:51,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:01:51,957 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) [2022-02-15 13:01:51,966 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-02-15 13:01:51,980 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-15 13:01:51,980 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 13:01:51,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 6 conjunts are in the unsatisfiable core [2022-02-15 13:01:51,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:01:52,047 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:01:52,048 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:01:52,100 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:01:52,100 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [140171394] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:01:52,100 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:01:52,100 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2022-02-15 13:01:52,101 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793543335] [2022-02-15 13:01:52,101 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:01:52,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-15 13:01:52,101 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:01:52,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-15 13:01:52,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-02-15 13:01:52,101 INFO L87 Difference]: Start difference. First operand 647 states and 1507 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) [2022-02-15 13:01:52,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:01:52,213 INFO L93 Difference]: Finished difference Result 814 states and 1851 transitions. [2022-02-15 13:01:52,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-15 13:01:52,214 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 [2022-02-15 13:01:52,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:01:52,217 INFO L225 Difference]: With dead ends: 814 [2022-02-15 13:01:52,217 INFO L226 Difference]: Without dead ends: 814 [2022-02-15 13:01:52,217 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2022-02-15 13:01:52,218 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 53 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:01:52,218 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 96 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 13:01:52,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 814 states. [2022-02-15 13:01:52,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 814 to 661. [2022-02-15 13:01:52,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 661 states, 660 states have (on average 2.3333333333333335) internal successors, (1540), 660 states have internal predecessors, (1540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:01:52,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 661 states to 661 states and 1540 transitions. [2022-02-15 13:01:52,234 INFO L78 Accepts]: Start accepts. Automaton has 661 states and 1540 transitions. Word has length 21 [2022-02-15 13:01:52,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:01:52,234 INFO L470 AbstractCegarLoop]: Abstraction has 661 states and 1540 transitions. [2022-02-15 13:01:52,234 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) [2022-02-15 13:01:52,234 INFO L276 IsEmpty]: Start isEmpty. Operand 661 states and 1540 transitions. [2022-02-15 13:01:52,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-15 13:01:52,235 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:01:52,236 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:01:52,261 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-02-15 13:01:52,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-02-15 13:01:52,455 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:01:52,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:01:52,456 INFO L85 PathProgramCache]: Analyzing trace with hash -706887118, now seen corresponding path program 13 times [2022-02-15 13:01:52,456 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:01:52,456 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069425938] [2022-02-15 13:01:52,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:01:52,456 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:01:52,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:01:52,486 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:01:52,486 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:01:52,486 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069425938] [2022-02-15 13:01:52,486 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069425938] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:01:52,486 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1516937438] [2022-02-15 13:01:52,487 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-15 13:01:52,487 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:01:52,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:01:52,488 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) [2022-02-15 13:01:52,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:01:52,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-02-15 13:01:52,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 6 conjunts are in the unsatisfiable core [2022-02-15 13:01:52,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:01:52,583 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:01:52,583 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:01:52,628 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:01:52,628 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1516937438] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:01:52,629 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:01:52,629 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2022-02-15 13:01:52,629 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66411756] [2022-02-15 13:01:52,629 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:01:52,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-15 13:01:52,629 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:01:52,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-15 13:01:52,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-02-15 13:01:52,631 INFO L87 Difference]: Start difference. First operand 661 states and 1540 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) [2022-02-15 13:01:52,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:01:52,716 INFO L93 Difference]: Finished difference Result 885 states and 2014 transitions. [2022-02-15 13:01:52,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-15 13:01:52,717 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 [2022-02-15 13:01:52,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:01:52,720 INFO L225 Difference]: With dead ends: 885 [2022-02-15 13:01:52,720 INFO L226 Difference]: Without dead ends: 875 [2022-02-15 13:01:52,720 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2022-02-15 13:01:52,721 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 77 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 13:01:52,723 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 82 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 13:01:52,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 875 states. [2022-02-15 13:01:52,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 875 to 661. [2022-02-15 13:01:52,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 661 states, 660 states have (on average 2.331818181818182) internal successors, (1539), 660 states have internal predecessors, (1539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:01:52,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 661 states to 661 states and 1539 transitions. [2022-02-15 13:01:52,740 INFO L78 Accepts]: Start accepts. Automaton has 661 states and 1539 transitions. Word has length 21 [2022-02-15 13:01:52,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:01:52,740 INFO L470 AbstractCegarLoop]: Abstraction has 661 states and 1539 transitions. [2022-02-15 13:01:52,740 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) [2022-02-15 13:01:52,740 INFO L276 IsEmpty]: Start isEmpty. Operand 661 states and 1539 transitions. [2022-02-15 13:01:52,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-15 13:01:52,741 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:01:52,741 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:01:52,765 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-02-15 13:01:52,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-02-15 13:01:52,955 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:01:52,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:01:52,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1794351444, now seen corresponding path program 14 times [2022-02-15 13:01:52,956 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:01:52,956 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818030626] [2022-02-15 13:01:52,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:01:52,956 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:01:52,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:01:52,987 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:01:52,988 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:01:52,988 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818030626] [2022-02-15 13:01:52,988 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818030626] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:01:52,988 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [142995246] [2022-02-15 13:01:52,988 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-15 13:01:52,988 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:01:52,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:01:52,989 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) [2022-02-15 13:01:52,996 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-02-15 13:01:53,014 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-15 13:01:53,014 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 13:01:53,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 6 conjunts are in the unsatisfiable core [2022-02-15 13:01:53,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:01:53,098 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:01:53,098 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:01:53,149 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:01:53,149 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [142995246] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:01:53,149 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:01:53,149 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-02-15 13:01:53,149 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859360945] [2022-02-15 13:01:53,149 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:01:53,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-15 13:01:53,150 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:01:53,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-15 13:01:53,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-02-15 13:01:53,150 INFO L87 Difference]: Start difference. First operand 661 states and 1539 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) [2022-02-15 13:01:53,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:01:53,324 INFO L93 Difference]: Finished difference Result 869 states and 1945 transitions. [2022-02-15 13:01:53,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-15 13:01:53,324 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 [2022-02-15 13:01:53,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:01:53,327 INFO L225 Difference]: With dead ends: 869 [2022-02-15 13:01:53,327 INFO L226 Difference]: Without dead ends: 869 [2022-02-15 13:01:53,327 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:01:53,328 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 58 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:01:53,328 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 134 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 13:01:53,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 869 states. [2022-02-15 13:01:53,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 869 to 721. [2022-02-15 13:01:53,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 721 states, 720 states have (on average 2.3375) internal successors, (1683), 720 states have internal predecessors, (1683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:01:53,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 1683 transitions. [2022-02-15 13:01:53,345 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 1683 transitions. Word has length 21 [2022-02-15 13:01:53,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:01:53,346 INFO L470 AbstractCegarLoop]: Abstraction has 721 states and 1683 transitions. [2022-02-15 13:01:53,346 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) [2022-02-15 13:01:53,346 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 1683 transitions. [2022-02-15 13:01:53,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-15 13:01:53,347 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:01:53,347 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:01:53,371 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-02-15 13:01:53,569 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-02-15 13:01:53,569 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:01:53,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:01:53,570 INFO L85 PathProgramCache]: Analyzing trace with hash 1894486254, now seen corresponding path program 15 times [2022-02-15 13:01:53,570 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:01:53,570 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866074722] [2022-02-15 13:01:53,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:01:53,570 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:01:53,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:01:53,611 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:01:53,611 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:01:53,611 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866074722] [2022-02-15 13:01:53,611 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866074722] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:01:53,611 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1811174147] [2022-02-15 13:01:53,611 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-15 13:01:53,612 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:01:53,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:01:53,613 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) [2022-02-15 13:01:53,614 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-02-15 13:01:53,637 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-15 13:01:53,637 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 13:01:53,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 6 conjunts are in the unsatisfiable core [2022-02-15 13:01:53,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:01:53,710 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:01:53,711 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:01:53,756 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:01:53,756 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1811174147] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:01:53,756 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:01:53,756 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-02-15 13:01:53,756 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867783002] [2022-02-15 13:01:53,756 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:01:53,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-15 13:01:53,757 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:01:53,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-15 13:01:53,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-02-15 13:01:53,757 INFO L87 Difference]: Start difference. First operand 721 states and 1683 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) [2022-02-15 13:01:53,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:01:53,914 INFO L93 Difference]: Finished difference Result 1013 states and 2270 transitions. [2022-02-15 13:01:53,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-15 13:01:53,914 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 [2022-02-15 13:01:53,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:01:53,917 INFO L225 Difference]: With dead ends: 1013 [2022-02-15 13:01:53,917 INFO L226 Difference]: Without dead ends: 1005 [2022-02-15 13:01:53,918 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=127, Invalid=293, Unknown=0, NotChecked=0, Total=420 [2022-02-15 13:01:53,918 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 129 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 95 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 [2022-02-15 13:01:53,918 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [129 Valid, 95 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 13:01:53,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1005 states. [2022-02-15 13:01:53,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1005 to 755. [2022-02-15 13:01:53,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 755 states, 754 states have (on average 2.3448275862068964) internal successors, (1768), 754 states have internal predecessors, (1768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:01:53,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 755 states to 755 states and 1768 transitions. [2022-02-15 13:01:53,936 INFO L78 Accepts]: Start accepts. Automaton has 755 states and 1768 transitions. Word has length 21 [2022-02-15 13:01:53,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:01:53,937 INFO L470 AbstractCegarLoop]: Abstraction has 755 states and 1768 transitions. [2022-02-15 13:01:53,937 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) [2022-02-15 13:01:53,937 INFO L276 IsEmpty]: Start isEmpty. Operand 755 states and 1768 transitions. [2022-02-15 13:01:53,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-15 13:01:53,938 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:01:53,938 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:01:53,964 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-02-15 13:01:54,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:01:54,160 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:01:54,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:01:54,160 INFO L85 PathProgramCache]: Analyzing trace with hash 18272628, now seen corresponding path program 16 times [2022-02-15 13:01:54,160 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:01:54,160 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227536383] [2022-02-15 13:01:54,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:01:54,160 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:01:54,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:01:54,191 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:01:54,191 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:01:54,191 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227536383] [2022-02-15 13:01:54,191 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227536383] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:01:54,191 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [911533971] [2022-02-15 13:01:54,192 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-15 13:01:54,192 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:01:54,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:01:54,193 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) [2022-02-15 13:01:54,194 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-02-15 13:01:54,214 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-15 13:01:54,214 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 13:01:54,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 6 conjunts are in the unsatisfiable core [2022-02-15 13:01:54,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:01:54,293 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:01:54,293 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:01:54,329 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:01:54,329 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [911533971] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:01:54,330 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:01:54,330 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-02-15 13:01:54,330 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698844447] [2022-02-15 13:01:54,330 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:01:54,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-15 13:01:54,330 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:01:54,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-15 13:01:54,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-02-15 13:01:54,331 INFO L87 Difference]: Start difference. First operand 755 states and 1768 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) [2022-02-15 13:01:54,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:01:54,566 INFO L93 Difference]: Finished difference Result 1127 states and 2483 transitions. [2022-02-15 13:01:54,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-02-15 13:01:54,567 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 [2022-02-15 13:01:54,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:01:54,571 INFO L225 Difference]: With dead ends: 1127 [2022-02-15 13:01:54,571 INFO L226 Difference]: Without dead ends: 1127 [2022-02-15 13:01:54,571 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=215, Invalid=385, Unknown=0, NotChecked=0, Total=600 [2022-02-15 13:01:54,572 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 99 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:01:54,572 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 130 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 13:01:54,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1127 states. [2022-02-15 13:01:54,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1127 to 814. [2022-02-15 13:01:54,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 814 states, 813 states have (on average 2.3702337023370235) internal successors, (1927), 813 states have internal predecessors, (1927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:01:54,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 814 states to 814 states and 1927 transitions. [2022-02-15 13:01:54,593 INFO L78 Accepts]: Start accepts. Automaton has 814 states and 1927 transitions. Word has length 21 [2022-02-15 13:01:54,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:01:54,593 INFO L470 AbstractCegarLoop]: Abstraction has 814 states and 1927 transitions. [2022-02-15 13:01:54,593 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) [2022-02-15 13:01:54,594 INFO L276 IsEmpty]: Start isEmpty. Operand 814 states and 1927 transitions. [2022-02-15 13:01:54,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-15 13:01:54,595 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:01:54,595 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:01:54,623 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-02-15 13:01:54,811 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,SelfDestructingSolverStorable28 [2022-02-15 13:01:54,811 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:01:54,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:01:54,812 INFO L85 PathProgramCache]: Analyzing trace with hash -677079438, now seen corresponding path program 17 times [2022-02-15 13:01:54,812 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:01:54,812 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371710672] [2022-02-15 13:01:54,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:01:54,812 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:01:54,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:01:54,843 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:01:54,843 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:01:54,843 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371710672] [2022-02-15 13:01:54,843 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371710672] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:01:54,843 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2100331590] [2022-02-15 13:01:54,843 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-15 13:01:54,843 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:01:54,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:01:54,845 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) [2022-02-15 13:01:54,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-02-15 13:01:54,870 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-15 13:01:54,870 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 13:01:54,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 6 conjunts are in the unsatisfiable core [2022-02-15 13:01:54,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:01:54,929 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:01:54,929 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:01:54,968 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:01:54,968 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2100331590] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:01:54,968 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:01:54,968 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-02-15 13:01:54,968 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180296844] [2022-02-15 13:01:54,968 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:01:54,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-15 13:01:54,969 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:01:54,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-15 13:01:54,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-02-15 13:01:54,969 INFO L87 Difference]: Start difference. First operand 814 states and 1927 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) [2022-02-15 13:01:55,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:01:55,198 INFO L93 Difference]: Finished difference Result 1260 states and 2849 transitions. [2022-02-15 13:01:55,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-15 13:01:55,199 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 [2022-02-15 13:01:55,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:01:55,203 INFO L225 Difference]: With dead ends: 1260 [2022-02-15 13:01:55,203 INFO L226 Difference]: Without dead ends: 1256 [2022-02-15 13:01:55,204 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=139, Invalid=323, Unknown=0, NotChecked=0, Total=462 [2022-02-15 13:01:55,204 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 127 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:01:55,205 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [127 Valid, 130 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 13:01:55,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1256 states. [2022-02-15 13:01:55,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1256 to 912. [2022-02-15 13:01:55,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 912 states, 911 states have (on average 2.37211855104281) internal successors, (2161), 911 states have internal predecessors, (2161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:01:55,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 912 states to 912 states and 2161 transitions. [2022-02-15 13:01:55,227 INFO L78 Accepts]: Start accepts. Automaton has 912 states and 2161 transitions. Word has length 21 [2022-02-15 13:01:55,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:01:55,227 INFO L470 AbstractCegarLoop]: Abstraction has 912 states and 2161 transitions. [2022-02-15 13:01:55,227 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) [2022-02-15 13:01:55,227 INFO L276 IsEmpty]: Start isEmpty. Operand 912 states and 2161 transitions. [2022-02-15 13:01:55,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-15 13:01:55,229 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:01:55,229 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:01:55,251 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-02-15 13:01:55,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:01:55,446 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:01:55,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:01:55,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1021798254, now seen corresponding path program 18 times [2022-02-15 13:01:55,446 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:01:55,446 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79697828] [2022-02-15 13:01:55,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:01:55,446 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:01:55,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:01:55,473 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:01:55,473 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:01:55,473 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79697828] [2022-02-15 13:01:55,473 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79697828] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:01:55,473 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2022314215] [2022-02-15 13:01:55,473 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-15 13:01:55,473 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:01:55,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:01:55,474 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) [2022-02-15 13:01:55,475 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-02-15 13:01:55,493 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-15 13:01:55,494 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 13:01:55,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 6 conjunts are in the unsatisfiable core [2022-02-15 13:01:55,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:01:55,565 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:01:55,565 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:01:55,600 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:01:55,600 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2022314215] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:01:55,600 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:01:55,600 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-02-15 13:01:55,600 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208321362] [2022-02-15 13:01:55,601 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:01:55,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-15 13:01:55,601 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:01:55,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-15 13:01:55,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-02-15 13:01:55,601 INFO L87 Difference]: Start difference. First operand 912 states and 2161 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) [2022-02-15 13:01:55,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:01:55,825 INFO L93 Difference]: Finished difference Result 1273 states and 2846 transitions. [2022-02-15 13:01:55,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-02-15 13:01:55,825 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 [2022-02-15 13:01:55,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:01:55,829 INFO L225 Difference]: With dead ends: 1273 [2022-02-15 13:01:55,829 INFO L226 Difference]: Without dead ends: 1273 [2022-02-15 13:01:55,830 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=200, Invalid=400, Unknown=0, NotChecked=0, Total=600 [2022-02-15 13:01:55,830 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 138 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:01:55,830 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [138 Valid, 134 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 13:01:55,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1273 states. [2022-02-15 13:01:55,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1273 to 914. [2022-02-15 13:01:55,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 914 states, 913 states have (on average 2.36144578313253) internal successors, (2156), 913 states have internal predecessors, (2156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:01:55,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 914 states to 914 states and 2156 transitions. [2022-02-15 13:01:55,851 INFO L78 Accepts]: Start accepts. Automaton has 914 states and 2156 transitions. Word has length 21 [2022-02-15 13:01:55,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:01:55,851 INFO L470 AbstractCegarLoop]: Abstraction has 914 states and 2156 transitions. [2022-02-15 13:01:55,851 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) [2022-02-15 13:01:55,851 INFO L276 IsEmpty]: Start isEmpty. Operand 914 states and 2156 transitions. [2022-02-15 13:01:55,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-15 13:01:55,853 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:01:55,853 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:01:55,875 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-02-15 13:01:56,067 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:01:56,067 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:01:56,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:01:56,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1373525006, now seen corresponding path program 19 times [2022-02-15 13:01:56,068 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:01:56,068 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649944714] [2022-02-15 13:01:56,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:01:56,068 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:01:56,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:01:56,108 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:01:56,108 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:01:56,108 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649944714] [2022-02-15 13:01:56,108 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649944714] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:01:56,108 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2053918964] [2022-02-15 13:01:56,108 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-15 13:01:56,109 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:01:56,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:01:56,110 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) [2022-02-15 13:01:56,111 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-02-15 13:01:56,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:01:56,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 6 conjunts are in the unsatisfiable core [2022-02-15 13:01:56,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:01:56,197 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:01:56,197 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:01:56,234 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:01:56,235 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2053918964] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:01:56,235 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:01:56,235 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-02-15 13:01:56,235 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153945766] [2022-02-15 13:01:56,235 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:01:56,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-15 13:01:56,235 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:01:56,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-15 13:01:56,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-02-15 13:01:56,236 INFO L87 Difference]: Start difference. First operand 914 states and 2156 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) [2022-02-15 13:01:56,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:01:56,391 INFO L93 Difference]: Finished difference Result 1088 states and 2462 transitions. [2022-02-15 13:01:56,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-15 13:01:56,391 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 [2022-02-15 13:01:56,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:01:56,395 INFO L225 Difference]: With dead ends: 1088 [2022-02-15 13:01:56,395 INFO L226 Difference]: Without dead ends: 1082 [2022-02-15 13:01:56,395 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=149, Invalid=271, Unknown=0, NotChecked=0, Total=420 [2022-02-15 13:01:56,396 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 90 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:01:56,396 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 130 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 13:01:56,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1082 states. [2022-02-15 13:01:56,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1082 to 920. [2022-02-15 13:01:56,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 920 states, 919 states have (on average 2.354733405875952) internal successors, (2164), 919 states have internal predecessors, (2164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:01:56,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 920 states to 920 states and 2164 transitions. [2022-02-15 13:01:56,414 INFO L78 Accepts]: Start accepts. Automaton has 920 states and 2164 transitions. Word has length 21 [2022-02-15 13:01:56,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:01:56,415 INFO L470 AbstractCegarLoop]: Abstraction has 920 states and 2164 transitions. [2022-02-15 13:01:56,415 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) [2022-02-15 13:01:56,415 INFO L276 IsEmpty]: Start isEmpty. Operand 920 states and 2164 transitions. [2022-02-15 13:01:56,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-15 13:01:56,416 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:01:56,417 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:01:56,440 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-02-15 13:01:56,627 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:01:56,627 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:01:56,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:01:56,628 INFO L85 PathProgramCache]: Analyzing trace with hash 218758990, now seen corresponding path program 20 times [2022-02-15 13:01:56,628 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:01:56,628 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612573179] [2022-02-15 13:01:56,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:01:56,628 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:01:56,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:01:56,660 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:01:56,660 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:01:56,660 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612573179] [2022-02-15 13:01:56,660 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612573179] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:01:56,660 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [626505398] [2022-02-15 13:01:56,661 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-15 13:01:56,661 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:01:56,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:01:56,662 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) [2022-02-15 13:01:56,663 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-02-15 13:01:56,682 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-15 13:01:56,682 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 13:01:56,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 6 conjunts are in the unsatisfiable core [2022-02-15 13:01:56,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:01:56,758 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:01:56,759 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:01:56,803 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:01:56,803 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [626505398] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:01:56,803 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:01:56,803 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-02-15 13:01:56,803 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278101117] [2022-02-15 13:01:56,804 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:01:56,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-15 13:01:56,804 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:01:56,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-15 13:01:56,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-02-15 13:01:56,804 INFO L87 Difference]: Start difference. First operand 920 states and 2164 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:01:56,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:01:56,993 INFO L93 Difference]: Finished difference Result 1291 states and 2913 transitions. [2022-02-15 13:01:56,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-15 13:01:56,994 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 0 states have call successors, (0), 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 [2022-02-15 13:01:56,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:01:56,998 INFO L225 Difference]: With dead ends: 1291 [2022-02-15 13:01:56,998 INFO L226 Difference]: Without dead ends: 1291 [2022-02-15 13:01:56,998 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=161, Invalid=345, Unknown=0, NotChecked=0, Total=506 [2022-02-15 13:01:56,998 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 76 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:01:56,999 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 122 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 13:01:57,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1291 states. [2022-02-15 13:01:57,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1291 to 967. [2022-02-15 13:01:57,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 967 states, 966 states have (on average 2.3509316770186337) internal successors, (2271), 966 states have internal predecessors, (2271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:01:57,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 967 states to 967 states and 2271 transitions. [2022-02-15 13:01:57,017 INFO L78 Accepts]: Start accepts. Automaton has 967 states and 2271 transitions. Word has length 21 [2022-02-15 13:01:57,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:01:57,017 INFO L470 AbstractCegarLoop]: Abstraction has 967 states and 2271 transitions. [2022-02-15 13:01:57,017 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:01:57,018 INFO L276 IsEmpty]: Start isEmpty. Operand 967 states and 2271 transitions. [2022-02-15 13:01:57,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-15 13:01:57,019 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:01:57,019 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:01:57,045 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-02-15 13:01:57,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:01:57,241 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:01:57,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:01:57,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1411568498, now seen corresponding path program 21 times [2022-02-15 13:01:57,241 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:01:57,241 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369889044] [2022-02-15 13:01:57,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:01:57,242 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:01:57,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:01:57,272 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:01:57,272 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:01:57,272 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369889044] [2022-02-15 13:01:57,272 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369889044] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:01:57,272 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1849420955] [2022-02-15 13:01:57,272 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-15 13:01:57,272 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:01:57,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:01:57,273 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) [2022-02-15 13:01:57,297 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-02-15 13:01:57,298 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-15 13:01:57,299 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 13:01:57,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 6 conjunts are in the unsatisfiable core [2022-02-15 13:01:57,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:01:57,379 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:01:57,379 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:01:57,429 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:01:57,429 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1849420955] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:01:57,429 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:01:57,429 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 6] total 10 [2022-02-15 13:01:57,429 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726485543] [2022-02-15 13:01:57,429 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:01:57,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-15 13:01:57,430 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:01:57,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-15 13:01:57,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-02-15 13:01:57,430 INFO L87 Difference]: Start difference. First operand 967 states and 2271 transitions. Second operand has 10 states, 10 states have (on average 3.2) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:01:57,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:01:57,620 INFO L93 Difference]: Finished difference Result 1476 states and 3326 transitions. [2022-02-15 13:01:57,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-15 13:01:57,621 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.2) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 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 [2022-02-15 13:01:57,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:01:57,625 INFO L225 Difference]: With dead ends: 1476 [2022-02-15 13:01:57,625 INFO L226 Difference]: Without dead ends: 1476 [2022-02-15 13:01:57,625 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=185, Invalid=321, Unknown=0, NotChecked=0, Total=506 [2022-02-15 13:01:57,625 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 101 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:01:57,625 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 128 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 13:01:57,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1476 states. [2022-02-15 13:01:57,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1476 to 1140. [2022-02-15 13:01:57,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1140 states, 1139 states have (on average 2.357330992098332) internal successors, (2685), 1139 states have internal predecessors, (2685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:01:57,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1140 states to 1140 states and 2685 transitions. [2022-02-15 13:01:57,649 INFO L78 Accepts]: Start accepts. Automaton has 1140 states and 2685 transitions. Word has length 21 [2022-02-15 13:01:57,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:01:57,649 INFO L470 AbstractCegarLoop]: Abstraction has 1140 states and 2685 transitions. [2022-02-15 13:01:57,649 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.2) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:01:57,649 INFO L276 IsEmpty]: Start isEmpty. Operand 1140 states and 2685 transitions. [2022-02-15 13:01:57,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-15 13:01:57,651 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:01:57,651 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:01:57,673 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-02-15 13:01:57,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2022-02-15 13:01:57,867 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:01:57,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:01:57,868 INFO L85 PathProgramCache]: Analyzing trace with hash -56316120, now seen corresponding path program 22 times [2022-02-15 13:01:57,868 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:01:57,868 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789084350] [2022-02-15 13:01:57,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:01:57,868 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:01:57,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:01:57,891 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-15 13:01:57,891 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:01:57,891 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789084350] [2022-02-15 13:01:57,891 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789084350] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:01:57,891 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1232148323] [2022-02-15 13:01:57,891 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-15 13:01:57,891 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:01:57,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:01:57,892 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) [2022-02-15 13:01:57,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-02-15 13:01:57,909 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-15 13:01:57,909 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 13:01:57,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 6 conjunts are in the unsatisfiable core [2022-02-15 13:01:57,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:01:57,973 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:01:57,973 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:01:58,003 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-15 13:01:58,003 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1232148323] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:01:58,003 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:01:58,003 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 6] total 10 [2022-02-15 13:01:58,004 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698161589] [2022-02-15 13:01:58,004 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:01:58,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-15 13:01:58,004 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:01:58,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-15 13:01:58,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-02-15 13:01:58,005 INFO L87 Difference]: Start difference. First operand 1140 states and 2685 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) [2022-02-15 13:01:58,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:01:58,174 INFO L93 Difference]: Finished difference Result 1429 states and 3227 transitions. [2022-02-15 13:01:58,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-15 13:01:58,174 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 [2022-02-15 13:01:58,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:01:58,189 INFO L225 Difference]: With dead ends: 1429 [2022-02-15 13:01:58,189 INFO L226 Difference]: Without dead ends: 1423 [2022-02-15 13:01:58,189 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=165, Invalid=297, Unknown=0, NotChecked=0, Total=462 [2022-02-15 13:01:58,190 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 124 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:01:58,190 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 96 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 13:01:58,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1423 states. [2022-02-15 13:01:58,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1423 to 1088. [2022-02-15 13:01:58,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1088 states, 1087 states have (on average 2.340386384544618) internal successors, (2544), 1087 states have internal predecessors, (2544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:01:58,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1088 states to 1088 states and 2544 transitions. [2022-02-15 13:01:58,217 INFO L78 Accepts]: Start accepts. Automaton has 1088 states and 2544 transitions. Word has length 21 [2022-02-15 13:01:58,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:01:58,217 INFO L470 AbstractCegarLoop]: Abstraction has 1088 states and 2544 transitions. [2022-02-15 13:01:58,217 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) [2022-02-15 13:01:58,217 INFO L276 IsEmpty]: Start isEmpty. Operand 1088 states and 2544 transitions. [2022-02-15 13:01:58,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-15 13:01:58,219 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:01:58,219 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:01:58,241 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-02-15 13:01:58,435 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,SelfDestructingSolverStorable34 [2022-02-15 13:01:58,435 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:01:58,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:01:58,436 INFO L85 PathProgramCache]: Analyzing trace with hash -562662386, now seen corresponding path program 23 times [2022-02-15 13:01:58,436 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:01:58,436 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45767787] [2022-02-15 13:01:58,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:01:58,436 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:01:58,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:01:58,463 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:01:58,463 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:01:58,463 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45767787] [2022-02-15 13:01:58,463 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45767787] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:01:58,463 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [263840614] [2022-02-15 13:01:58,464 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-15 13:01:58,464 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:01:58,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:01:58,465 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) [2022-02-15 13:01:58,473 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-02-15 13:01:58,495 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-15 13:01:58,495 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 13:01:58,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 6 conjunts are in the unsatisfiable core [2022-02-15 13:01:58,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:01:58,563 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:01:58,563 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:01:58,596 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:01:58,597 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [263840614] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:01:58,597 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:01:58,597 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-02-15 13:01:58,598 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036346903] [2022-02-15 13:01:58,598 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:01:58,598 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-15 13:01:58,598 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:01:58,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-15 13:01:58,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-02-15 13:01:58,598 INFO L87 Difference]: Start difference. First operand 1088 states and 2544 transitions. Second operand has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 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) [2022-02-15 13:01:58,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:01:58,778 INFO L93 Difference]: Finished difference Result 1433 states and 3263 transitions. [2022-02-15 13:01:58,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-15 13:01:58,779 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 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 [2022-02-15 13:01:58,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:01:58,782 INFO L225 Difference]: With dead ends: 1433 [2022-02-15 13:01:58,782 INFO L226 Difference]: Without dead ends: 1409 [2022-02-15 13:01:58,782 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2022-02-15 13:01:58,783 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 106 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:01:58,783 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 115 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 13:01:58,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1409 states. [2022-02-15 13:01:58,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1409 to 1189. [2022-02-15 13:01:58,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1189 states, 1188 states have (on average 2.3501683501683504) internal successors, (2792), 1188 states have internal predecessors, (2792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:01:58,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1189 states to 1189 states and 2792 transitions. [2022-02-15 13:01:58,804 INFO L78 Accepts]: Start accepts. Automaton has 1189 states and 2792 transitions. Word has length 21 [2022-02-15 13:01:58,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:01:58,804 INFO L470 AbstractCegarLoop]: Abstraction has 1189 states and 2792 transitions. [2022-02-15 13:01:58,804 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 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) [2022-02-15 13:01:58,804 INFO L276 IsEmpty]: Start isEmpty. Operand 1189 states and 2792 transitions. [2022-02-15 13:01:58,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-02-15 13:01:58,806 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:01:58,806 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:01:58,833 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-02-15 13:01:59,019 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-02-15 13:01:59,019 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:01:59,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:01:59,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1924771297, now seen corresponding path program 24 times [2022-02-15 13:01:59,020 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:01:59,020 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958760312] [2022-02-15 13:01:59,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:01:59,020 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:01:59,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:01:59,058 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:01:59,058 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:01:59,058 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958760312] [2022-02-15 13:01:59,058 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958760312] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:01:59,058 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [744130426] [2022-02-15 13:01:59,058 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-15 13:01:59,058 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:01:59,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:01:59,059 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) [2022-02-15 13:01:59,060 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-02-15 13:01:59,080 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-15 13:01:59,080 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 13:01:59,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-15 13:01:59,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:01:59,155 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:01:59,155 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:01:59,258 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:01:59,258 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [744130426] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:01:59,258 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:01:59,263 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2022-02-15 13:01:59,264 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706858454] [2022-02-15 13:01:59,264 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:01:59,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-15 13:01:59,265 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:01:59,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-15 13:01:59,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-15 13:01:59,266 INFO L87 Difference]: Start difference. First operand 1189 states and 2792 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) [2022-02-15 13:01:59,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:01:59,300 INFO L93 Difference]: Finished difference Result 1689 states and 3935 transitions. [2022-02-15 13:01:59,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-15 13:01:59,301 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 [2022-02-15 13:01:59,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:01:59,303 INFO L225 Difference]: With dead ends: 1689 [2022-02-15 13:01:59,303 INFO L226 Difference]: Without dead ends: 1668 [2022-02-15 13:01:59,303 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 [2022-02-15 13:01:59,304 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 22 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 13:01:59,304 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 101 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 13:01:59,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1668 states. [2022-02-15 13:01:59,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1668 to 1342. [2022-02-15 13:01:59,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1342 states, 1341 states have (on average 2.354213273676361) internal successors, (3157), 1341 states have internal predecessors, (3157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:01:59,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1342 states to 1342 states and 3157 transitions. [2022-02-15 13:01:59,325 INFO L78 Accepts]: Start accepts. Automaton has 1342 states and 3157 transitions. Word has length 24 [2022-02-15 13:01:59,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:01:59,325 INFO L470 AbstractCegarLoop]: Abstraction has 1342 states and 3157 transitions. [2022-02-15 13:01:59,325 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) [2022-02-15 13:01:59,325 INFO L276 IsEmpty]: Start isEmpty. Operand 1342 states and 3157 transitions. [2022-02-15 13:01:59,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-02-15 13:01:59,328 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:01:59,328 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:01:59,351 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-02-15 13:01:59,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:01:59,543 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:01:59,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:01:59,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1268966179, now seen corresponding path program 25 times [2022-02-15 13:01:59,544 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:01:59,544 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364791588] [2022-02-15 13:01:59,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:01:59,544 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:01:59,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:01:59,583 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-15 13:01:59,583 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:01:59,583 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364791588] [2022-02-15 13:01:59,583 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364791588] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:01:59,583 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2036797253] [2022-02-15 13:01:59,583 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-15 13:01:59,583 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:01:59,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:01:59,585 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) [2022-02-15 13:01:59,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-02-15 13:01:59,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:01:59,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-15 13:01:59,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:01:59,698 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-15 13:01:59,699 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:01:59,780 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-15 13:01:59,780 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2036797253] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:01:59,780 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:01:59,780 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2022-02-15 13:01:59,780 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655050570] [2022-02-15 13:01:59,780 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:01:59,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-15 13:01:59,782 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:01:59,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-15 13:01:59,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-15 13:01:59,782 INFO L87 Difference]: Start difference. First operand 1342 states and 3157 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) [2022-02-15 13:01:59,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:01:59,815 INFO L93 Difference]: Finished difference Result 2105 states and 4959 transitions. [2022-02-15 13:01:59,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-15 13:01:59,816 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 [2022-02-15 13:01:59,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:01:59,820 INFO L225 Difference]: With dead ends: 2105 [2022-02-15 13:01:59,820 INFO L226 Difference]: Without dead ends: 2078 [2022-02-15 13:01:59,820 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 [2022-02-15 13:01:59,824 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 21 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 13:01:59,828 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 103 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 13:01:59,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2078 states. [2022-02-15 13:01:59,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2078 to 1674. [2022-02-15 13:01:59,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1674 states, 1673 states have (on average 2.3915122534369395) internal successors, (4001), 1673 states have internal predecessors, (4001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:01:59,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1674 states to 1674 states and 4001 transitions. [2022-02-15 13:01:59,868 INFO L78 Accepts]: Start accepts. Automaton has 1674 states and 4001 transitions. Word has length 24 [2022-02-15 13:01:59,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:01:59,868 INFO L470 AbstractCegarLoop]: Abstraction has 1674 states and 4001 transitions. [2022-02-15 13:01:59,869 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) [2022-02-15 13:01:59,869 INFO L276 IsEmpty]: Start isEmpty. Operand 1674 states and 4001 transitions. [2022-02-15 13:01:59,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-02-15 13:01:59,872 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:01:59,872 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:01:59,895 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-02-15 13:02:00,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-02-15 13:02:00,088 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:02:00,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:02:00,088 INFO L85 PathProgramCache]: Analyzing trace with hash 739580579, now seen corresponding path program 26 times [2022-02-15 13:02:00,088 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:02:00,088 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195231882] [2022-02-15 13:02:00,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:02:00,088 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:02:00,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:02:00,127 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-15 13:02:00,127 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:02:00,127 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195231882] [2022-02-15 13:02:00,127 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195231882] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:02:00,128 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1034119401] [2022-02-15 13:02:00,128 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-15 13:02:00,128 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:02:00,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:02:00,129 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) [2022-02-15 13:02:00,130 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-02-15 13:02:00,146 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-15 13:02:00,146 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 13:02:00,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-15 13:02:00,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:02:00,226 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-15 13:02:00,226 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:02:00,297 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-15 13:02:00,297 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1034119401] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:02:00,297 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:02:00,297 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2022-02-15 13:02:00,297 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330506678] [2022-02-15 13:02:00,297 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:02:00,298 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-15 13:02:00,298 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:02:00,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-15 13:02:00,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-15 13:02:00,298 INFO L87 Difference]: Start difference. First operand 1674 states and 4001 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) [2022-02-15 13:02:00,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:02:00,335 INFO L93 Difference]: Finished difference Result 2456 states and 5842 transitions. [2022-02-15 13:02:00,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-15 13:02:00,336 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 [2022-02-15 13:02:00,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:02:00,341 INFO L225 Difference]: With dead ends: 2456 [2022-02-15 13:02:00,341 INFO L226 Difference]: Without dead ends: 2438 [2022-02-15 13:02:00,341 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 [2022-02-15 13:02:00,342 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 20 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 13:02:00,342 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 104 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 13:02:00,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2438 states. [2022-02-15 13:02:00,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2438 to 2316. [2022-02-15 13:02:00,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2316 states, 2315 states have (on average 2.414686825053996) internal successors, (5590), 2315 states have internal predecessors, (5590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:02:00,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2316 states to 2316 states and 5590 transitions. [2022-02-15 13:02:00,388 INFO L78 Accepts]: Start accepts. Automaton has 2316 states and 5590 transitions. Word has length 24 [2022-02-15 13:02:00,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:02:00,388 INFO L470 AbstractCegarLoop]: Abstraction has 2316 states and 5590 transitions. [2022-02-15 13:02:00,388 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) [2022-02-15 13:02:00,388 INFO L276 IsEmpty]: Start isEmpty. Operand 2316 states and 5590 transitions. [2022-02-15 13:02:00,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-15 13:02:00,392 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:02:00,392 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:02:00,411 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-02-15 13:02:00,604 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,SelfDestructingSolverStorable38 [2022-02-15 13:02:00,605 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:02:00,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:02:00,605 INFO L85 PathProgramCache]: Analyzing trace with hash -1065280142, now seen corresponding path program 27 times [2022-02-15 13:02:00,605 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:02:00,605 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342924028] [2022-02-15 13:02:00,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:02:00,606 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:02:00,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:02:00,650 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:00,651 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:02:00,651 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342924028] [2022-02-15 13:02:00,651 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342924028] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:02:00,651 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [847025646] [2022-02-15 13:02:00,651 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-15 13:02:00,651 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:02:00,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:02:00,652 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) [2022-02-15 13:02:00,654 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-02-15 13:02:00,681 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-15 13:02:00,682 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 13:02:00,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-15 13:02:00,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:02:00,789 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:00,789 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:02:00,853 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:00,854 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [847025646] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:02:00,854 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:02:00,854 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2022-02-15 13:02:00,854 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857893385] [2022-02-15 13:02:00,854 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:02:00,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-15 13:02:00,854 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:02:00,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-15 13:02:00,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-02-15 13:02:00,855 INFO L87 Difference]: Start difference. First operand 2316 states and 5590 transitions. Second operand has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 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) [2022-02-15 13:02:01,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:02:01,023 INFO L93 Difference]: Finished difference Result 3314 states and 7980 transitions. [2022-02-15 13:02:01,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-15 13:02:01,023 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 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 [2022-02-15 13:02:01,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:02:01,028 INFO L225 Difference]: With dead ends: 3314 [2022-02-15 13:02:01,028 INFO L226 Difference]: Without dead ends: 3314 [2022-02-15 13:02:01,028 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 [2022-02-15 13:02:01,029 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 76 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:02:01,029 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 169 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 13:02:01,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3314 states. [2022-02-15 13:02:01,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3314 to 2398. [2022-02-15 13:02:01,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2398 states, 2397 states have (on average 2.411764705882353) internal successors, (5781), 2397 states have internal predecessors, (5781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:02:01,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2398 states to 2398 states and 5781 transitions. [2022-02-15 13:02:01,076 INFO L78 Accepts]: Start accepts. Automaton has 2398 states and 5781 transitions. Word has length 27 [2022-02-15 13:02:01,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:02:01,076 INFO L470 AbstractCegarLoop]: Abstraction has 2398 states and 5781 transitions. [2022-02-15 13:02:01,076 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 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) [2022-02-15 13:02:01,076 INFO L276 IsEmpty]: Start isEmpty. Operand 2398 states and 5781 transitions. [2022-02-15 13:02:01,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-15 13:02:01,080 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:02:01,080 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:02:01,102 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-02-15 13:02:01,295 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,SelfDestructingSolverStorable39 [2022-02-15 13:02:01,295 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:02:01,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:02:01,296 INFO L85 PathProgramCache]: Analyzing trace with hash 2121442180, now seen corresponding path program 28 times [2022-02-15 13:02:01,296 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:02:01,296 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995407015] [2022-02-15 13:02:01,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:02:01,296 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:02:01,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:02:01,338 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:01,339 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:02:01,339 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995407015] [2022-02-15 13:02:01,339 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995407015] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:02:01,339 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [608263311] [2022-02-15 13:02:01,339 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-15 13:02:01,339 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:02:01,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:02:01,340 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) [2022-02-15 13:02:01,341 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-02-15 13:02:01,362 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-15 13:02:01,362 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 13:02:01,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-15 13:02:01,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:02:01,435 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:01,436 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:02:01,484 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:01,484 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [608263311] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:02:01,484 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:02:01,485 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2022-02-15 13:02:01,485 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849671679] [2022-02-15 13:02:01,485 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:02:01,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-15 13:02:01,485 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:02:01,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-15 13:02:01,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-02-15 13:02:01,485 INFO L87 Difference]: Start difference. First operand 2398 states and 5781 transitions. Second operand has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 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) [2022-02-15 13:02:01,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:02:01,607 INFO L93 Difference]: Finished difference Result 3978 states and 9470 transitions. [2022-02-15 13:02:01,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-15 13:02:01,607 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 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 [2022-02-15 13:02:01,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:02:01,616 INFO L225 Difference]: With dead ends: 3978 [2022-02-15 13:02:01,616 INFO L226 Difference]: Without dead ends: 3952 [2022-02-15 13:02:01,617 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=272, Unknown=0, NotChecked=0, Total=380 [2022-02-15 13:02:01,617 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 114 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:02:01,617 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 108 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 13:02:01,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3952 states. [2022-02-15 13:02:01,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3952 to 2398. [2022-02-15 13:02:01,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2398 states, 2397 states have (on average 2.41093032957864) internal successors, (5779), 2397 states have internal predecessors, (5779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:02:01,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2398 states to 2398 states and 5779 transitions. [2022-02-15 13:02:01,706 INFO L78 Accepts]: Start accepts. Automaton has 2398 states and 5779 transitions. Word has length 27 [2022-02-15 13:02:01,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:02:01,706 INFO L470 AbstractCegarLoop]: Abstraction has 2398 states and 5779 transitions. [2022-02-15 13:02:01,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 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) [2022-02-15 13:02:01,707 INFO L276 IsEmpty]: Start isEmpty. Operand 2398 states and 5779 transitions. [2022-02-15 13:02:01,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-15 13:02:01,711 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:02:01,711 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:02:01,735 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-02-15 13:02:01,933 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:02:01,933 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:02:01,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:02:01,933 INFO L85 PathProgramCache]: Analyzing trace with hash -240729226, now seen corresponding path program 29 times [2022-02-15 13:02:01,933 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:02:01,934 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431044941] [2022-02-15 13:02:01,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:02:01,934 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:02:01,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:02:01,974 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:01,974 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:02:01,974 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431044941] [2022-02-15 13:02:01,974 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431044941] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:02:01,974 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1673924108] [2022-02-15 13:02:01,974 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-15 13:02:01,975 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:02:01,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:02:01,975 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) [2022-02-15 13:02:01,976 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-02-15 13:02:02,000 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-02-15 13:02:02,000 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 13:02:02,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-15 13:02:02,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:02:02,100 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:02,100 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:02:02,151 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:02,151 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1673924108] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:02:02,151 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:02:02,151 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2022-02-15 13:02:02,152 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503228314] [2022-02-15 13:02:02,152 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:02:02,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-15 13:02:02,152 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:02:02,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-15 13:02:02,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-02-15 13:02:02,152 INFO L87 Difference]: Start difference. First operand 2398 states and 5779 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) [2022-02-15 13:02:02,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:02:02,610 INFO L93 Difference]: Finished difference Result 5235 states and 12267 transitions. [2022-02-15 13:02:02,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-02-15 13:02:02,610 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 [2022-02-15 13:02:02,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:02:02,620 INFO L225 Difference]: With dead ends: 5235 [2022-02-15 13:02:02,620 INFO L226 Difference]: Without dead ends: 5233 [2022-02-15 13:02:02,621 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 616 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=578, Invalid=1314, Unknown=0, NotChecked=0, Total=1892 [2022-02-15 13:02:02,621 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 200 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 359 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 13:02:02,622 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [200 Valid, 227 Invalid, 401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 359 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 13:02:02,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5233 states. [2022-02-15 13:02:02,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5233 to 3397. [2022-02-15 13:02:02,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3397 states, 3396 states have (on average 2.4375736160188457) internal successors, (8278), 3396 states have internal predecessors, (8278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:02:02,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3397 states to 3397 states and 8278 transitions. [2022-02-15 13:02:02,702 INFO L78 Accepts]: Start accepts. Automaton has 3397 states and 8278 transitions. Word has length 27 [2022-02-15 13:02:02,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:02:02,702 INFO L470 AbstractCegarLoop]: Abstraction has 3397 states and 8278 transitions. [2022-02-15 13:02:02,702 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) [2022-02-15 13:02:02,702 INFO L276 IsEmpty]: Start isEmpty. Operand 3397 states and 8278 transitions. [2022-02-15 13:02:02,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-15 13:02:02,706 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:02:02,707 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:02:02,729 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2022-02-15 13:02:02,929 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,SelfDestructingSolverStorable41 [2022-02-15 13:02:02,929 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:02:02,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:02:02,929 INFO L85 PathProgramCache]: Analyzing trace with hash -936081292, now seen corresponding path program 30 times [2022-02-15 13:02:02,930 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:02:02,930 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582096007] [2022-02-15 13:02:02,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:02:02,930 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:02:02,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:02:02,982 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:02,982 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:02:02,982 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582096007] [2022-02-15 13:02:02,982 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582096007] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:02:02,982 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [131165001] [2022-02-15 13:02:02,982 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-15 13:02:02,982 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:02:02,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:02:02,983 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) [2022-02-15 13:02:02,984 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-02-15 13:02:03,002 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-02-15 13:02:03,002 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 13:02:03,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-15 13:02:03,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:02:03,089 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:03,089 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:02:03,140 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:03,140 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [131165001] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:02:03,140 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:02:03,140 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2022-02-15 13:02:03,140 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508481503] [2022-02-15 13:02:03,140 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:02:03,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-15 13:02:03,140 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:02:03,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-15 13:02:03,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2022-02-15 13:02:03,141 INFO L87 Difference]: Start difference. First operand 3397 states and 8278 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) [2022-02-15 13:02:03,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:02:03,474 INFO L93 Difference]: Finished difference Result 4601 states and 10905 transitions. [2022-02-15 13:02:03,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-02-15 13:02:03,475 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 [2022-02-15 13:02:03,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:02:03,482 INFO L225 Difference]: With dead ends: 4601 [2022-02-15 13:02:03,482 INFO L226 Difference]: Without dead ends: 4597 [2022-02-15 13:02:03,483 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=417, Invalid=773, Unknown=0, NotChecked=0, Total=1190 [2022-02-15 13:02:03,483 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 152 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 13:02:03,484 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [152 Valid, 232 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 13:02:03,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4597 states. [2022-02-15 13:02:03,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4597 to 3714. [2022-02-15 13:02:03,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3714 states, 3713 states have (on average 2.449232426609211) internal successors, (9094), 3713 states have internal predecessors, (9094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:02:03,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3714 states to 3714 states and 9094 transitions. [2022-02-15 13:02:03,562 INFO L78 Accepts]: Start accepts. Automaton has 3714 states and 9094 transitions. Word has length 27 [2022-02-15 13:02:03,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:02:03,562 INFO L470 AbstractCegarLoop]: Abstraction has 3714 states and 9094 transitions. [2022-02-15 13:02:03,562 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) [2022-02-15 13:02:03,562 INFO L276 IsEmpty]: Start isEmpty. Operand 3714 states and 9094 transitions. [2022-02-15 13:02:03,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-15 13:02:03,568 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:02:03,568 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:02:03,591 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2022-02-15 13:02:03,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:02:03,783 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:02:03,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:02:03,784 INFO L85 PathProgramCache]: Analyzing trace with hash 762796400, now seen corresponding path program 31 times [2022-02-15 13:02:03,784 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:02:03,784 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017500402] [2022-02-15 13:02:03,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:02:03,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:02:03,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:02:03,822 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:03,822 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:02:03,822 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017500402] [2022-02-15 13:02:03,822 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017500402] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:02:03,822 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [831022601] [2022-02-15 13:02:03,822 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-15 13:02:03,822 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:02:03,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:02:03,823 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) [2022-02-15 13:02:03,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-02-15 13:02:03,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:02:03,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-15 13:02:03,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:02:03,924 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:03,924 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:02:03,973 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:03,973 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [831022601] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:02:03,973 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:02:03,973 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2022-02-15 13:02:03,973 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270670004] [2022-02-15 13:02:03,973 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:02:03,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-15 13:02:03,974 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:02:03,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-15 13:02:03,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-02-15 13:02:03,974 INFO L87 Difference]: Start difference. First operand 3714 states and 9094 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) [2022-02-15 13:02:04,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:02:04,356 INFO L93 Difference]: Finished difference Result 4766 states and 11235 transitions. [2022-02-15 13:02:04,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-02-15 13:02:04,356 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 [2022-02-15 13:02:04,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:02:04,362 INFO L225 Difference]: With dead ends: 4766 [2022-02-15 13:02:04,362 INFO L226 Difference]: Without dead ends: 4766 [2022-02-15 13:02:04,362 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=568, Invalid=1072, Unknown=0, NotChecked=0, Total=1640 [2022-02-15 13:02:04,362 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 173 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 13:02:04,363 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [173 Valid, 194 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 327 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 13:02:04,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4766 states. [2022-02-15 13:02:04,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4766 to 3355. [2022-02-15 13:02:04,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3355 states, 3354 states have (on average 2.4421586165772213) internal successors, (8191), 3354 states have internal predecessors, (8191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:02:04,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3355 states to 3355 states and 8191 transitions. [2022-02-15 13:02:04,427 INFO L78 Accepts]: Start accepts. Automaton has 3355 states and 8191 transitions. Word has length 27 [2022-02-15 13:02:04,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:02:04,427 INFO L470 AbstractCegarLoop]: Abstraction has 3355 states and 8191 transitions. [2022-02-15 13:02:04,427 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) [2022-02-15 13:02:04,427 INFO L276 IsEmpty]: Start isEmpty. Operand 3355 states and 8191 transitions. [2022-02-15 13:02:04,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-15 13:02:04,432 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:02:04,432 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:02:04,453 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2022-02-15 13:02:04,652 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,SelfDestructingSolverStorable43 [2022-02-15 13:02:04,653 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:02:04,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:02:04,653 INFO L85 PathProgramCache]: Analyzing trace with hash 1114523152, now seen corresponding path program 32 times [2022-02-15 13:02:04,653 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:02:04,653 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037932464] [2022-02-15 13:02:04,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:02:04,653 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:02:04,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:02:04,690 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:04,690 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:02:04,690 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037932464] [2022-02-15 13:02:04,691 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037932464] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:02:04,691 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2130131640] [2022-02-15 13:02:04,691 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-15 13:02:04,691 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:02:04,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:02:04,692 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) [2022-02-15 13:02:04,715 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-02-15 13:02:04,719 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-15 13:02:04,719 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 13:02:04,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-15 13:02:04,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:02:04,805 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:04,805 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:02:04,845 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:04,846 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2130131640] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:02:04,846 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:02:04,846 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2022-02-15 13:02:04,846 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343511465] [2022-02-15 13:02:04,846 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:02:04,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-15 13:02:04,846 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:02:04,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-15 13:02:04,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2022-02-15 13:02:04,846 INFO L87 Difference]: Start difference. First operand 3355 states and 8191 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) [2022-02-15 13:02:05,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:02:05,149 INFO L93 Difference]: Finished difference Result 5106 states and 12038 transitions. [2022-02-15 13:02:05,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-02-15 13:02:05,150 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 [2022-02-15 13:02:05,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:02:05,155 INFO L225 Difference]: With dead ends: 5106 [2022-02-15 13:02:05,155 INFO L226 Difference]: Without dead ends: 5100 [2022-02-15 13:02:05,156 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=303, Invalid=819, Unknown=0, NotChecked=0, Total=1122 [2022-02-15 13:02:05,156 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 224 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:02:05,156 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [224 Valid, 160 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 13:02:05,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5100 states. [2022-02-15 13:02:05,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5100 to 2971. [2022-02-15 13:02:05,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2971 states, 2970 states have (on average 2.426262626262626) internal successors, (7206), 2970 states have internal predecessors, (7206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:02:05,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2971 states to 2971 states and 7206 transitions. [2022-02-15 13:02:05,225 INFO L78 Accepts]: Start accepts. Automaton has 2971 states and 7206 transitions. Word has length 27 [2022-02-15 13:02:05,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:02:05,225 INFO L470 AbstractCegarLoop]: Abstraction has 2971 states and 7206 transitions. [2022-02-15 13:02:05,225 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) [2022-02-15 13:02:05,225 INFO L276 IsEmpty]: Start isEmpty. Operand 2971 states and 7206 transitions. [2022-02-15 13:02:05,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-15 13:02:05,229 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:02:05,229 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:02:05,254 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2022-02-15 13:02:05,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:02:05,443 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:02:05,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:02:05,444 INFO L85 PathProgramCache]: Analyzing trace with hash 608176886, now seen corresponding path program 33 times [2022-02-15 13:02:05,444 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:02:05,444 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775835667] [2022-02-15 13:02:05,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:02:05,444 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:02:05,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:02:05,482 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:05,482 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:02:05,482 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775835667] [2022-02-15 13:02:05,483 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775835667] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:02:05,483 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1177836429] [2022-02-15 13:02:05,483 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-15 13:02:05,483 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:02:05,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:02:05,484 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) [2022-02-15 13:02:05,485 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-02-15 13:02:05,506 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-15 13:02:05,506 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 13:02:05,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-15 13:02:05,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:02:05,592 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:05,592 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:02:05,634 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:05,635 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1177836429] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:02:05,635 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:02:05,635 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2022-02-15 13:02:05,635 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069112060] [2022-02-15 13:02:05,635 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:02:05,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-15 13:02:05,635 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:02:05,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-15 13:02:05,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-02-15 13:02:05,635 INFO L87 Difference]: Start difference. First operand 2971 states and 7206 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) [2022-02-15 13:02:05,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:02:05,918 INFO L93 Difference]: Finished difference Result 5036 states and 11882 transitions. [2022-02-15 13:02:05,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-02-15 13:02:05,918 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 [2022-02-15 13:02:05,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:02:05,923 INFO L225 Difference]: With dead ends: 5036 [2022-02-15 13:02:05,923 INFO L226 Difference]: Without dead ends: 5012 [2022-02-15 13:02:05,924 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=274, Invalid=782, Unknown=0, NotChecked=0, Total=1056 [2022-02-15 13:02:05,924 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 188 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:02:05,924 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [188 Valid, 179 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 13:02:05,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5012 states. [2022-02-15 13:02:05,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5012 to 3115. [2022-02-15 13:02:05,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3115 states, 3114 states have (on average 2.423892100192678) internal successors, (7548), 3114 states have internal predecessors, (7548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:02:05,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3115 states to 3115 states and 7548 transitions. [2022-02-15 13:02:05,988 INFO L78 Accepts]: Start accepts. Automaton has 3115 states and 7548 transitions. Word has length 27 [2022-02-15 13:02:05,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:02:05,988 INFO L470 AbstractCegarLoop]: Abstraction has 3115 states and 7548 transitions. [2022-02-15 13:02:05,988 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) [2022-02-15 13:02:05,988 INFO L276 IsEmpty]: Start isEmpty. Operand 3115 states and 7548 transitions. [2022-02-15 13:02:05,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-15 13:02:05,992 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:02:05,992 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:02:06,015 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2022-02-15 13:02:06,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2022-02-15 13:02:06,215 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:02:06,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:02:06,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1945454252, now seen corresponding path program 34 times [2022-02-15 13:02:06,215 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:02:06,215 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217448459] [2022-02-15 13:02:06,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:02:06,216 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:02:06,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:02:06,254 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:06,255 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:02:06,255 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217448459] [2022-02-15 13:02:06,255 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217448459] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:02:06,255 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1872808065] [2022-02-15 13:02:06,255 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-15 13:02:06,255 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:02:06,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:02:06,256 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) [2022-02-15 13:02:06,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-02-15 13:02:06,278 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-15 13:02:06,278 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 13:02:06,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-15 13:02:06,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:02:06,367 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:06,368 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:02:06,411 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:06,411 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1872808065] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:02:06,411 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:02:06,411 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2022-02-15 13:02:06,411 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928503306] [2022-02-15 13:02:06,411 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:02:06,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-15 13:02:06,411 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:02:06,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-15 13:02:06,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2022-02-15 13:02:06,412 INFO L87 Difference]: Start difference. First operand 3115 states and 7548 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) [2022-02-15 13:02:06,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:02:06,614 INFO L93 Difference]: Finished difference Result 4575 states and 10848 transitions. [2022-02-15 13:02:06,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-02-15 13:02:06,614 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 [2022-02-15 13:02:06,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:02:06,619 INFO L225 Difference]: With dead ends: 4575 [2022-02-15 13:02:06,619 INFO L226 Difference]: Without dead ends: 4554 [2022-02-15 13:02:06,619 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=202, Invalid=554, Unknown=0, NotChecked=0, Total=756 [2022-02-15 13:02:06,619 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 146 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:02:06,619 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [146 Valid, 131 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 13:02:06,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4554 states. [2022-02-15 13:02:06,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4554 to 3118. [2022-02-15 13:02:06,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3118 states, 3117 states have (on average 2.421880012832852) internal successors, (7549), 3117 states have internal predecessors, (7549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:02:06,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3118 states to 3118 states and 7549 transitions. [2022-02-15 13:02:06,666 INFO L78 Accepts]: Start accepts. Automaton has 3118 states and 7549 transitions. Word has length 27 [2022-02-15 13:02:06,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:02:06,666 INFO L470 AbstractCegarLoop]: Abstraction has 3118 states and 7549 transitions. [2022-02-15 13:02:06,666 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) [2022-02-15 13:02:06,667 INFO L276 IsEmpty]: Start isEmpty. Operand 3118 states and 7549 transitions. [2022-02-15 13:02:06,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-15 13:02:06,671 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:02:06,671 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:02:06,697 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2022-02-15 13:02:06,894 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,SelfDestructingSolverStorable46 [2022-02-15 13:02:06,894 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:02:06,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:02:06,895 INFO L85 PathProgramCache]: Analyzing trace with hash -561233362, now seen corresponding path program 35 times [2022-02-15 13:02:06,895 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:02:06,895 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943006407] [2022-02-15 13:02:06,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:02:06,895 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:02:06,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:02:06,936 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:06,936 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:02:06,936 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943006407] [2022-02-15 13:02:06,936 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943006407] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:02:06,936 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [114455714] [2022-02-15 13:02:06,936 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-15 13:02:06,936 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:02:06,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:02:06,937 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) [2022-02-15 13:02:06,942 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-02-15 13:02:06,959 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-02-15 13:02:06,960 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 13:02:06,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-15 13:02:06,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:02:07,051 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:07,051 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:02:07,094 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:07,094 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [114455714] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:02:07,094 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:02:07,094 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2022-02-15 13:02:07,095 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839380603] [2022-02-15 13:02:07,095 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:02:07,095 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-15 13:02:07,095 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:02:07,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-15 13:02:07,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2022-02-15 13:02:07,095 INFO L87 Difference]: Start difference. First operand 3118 states and 7549 transitions. Second operand has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:02:07,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:02:07,464 INFO L93 Difference]: Finished difference Result 4547 states and 10660 transitions. [2022-02-15 13:02:07,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-02-15 13:02:07,464 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 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 [2022-02-15 13:02:07,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:02:07,472 INFO L225 Difference]: With dead ends: 4547 [2022-02-15 13:02:07,473 INFO L226 Difference]: Without dead ends: 4527 [2022-02-15 13:02:07,474 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 314 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=475, Invalid=1007, Unknown=0, NotChecked=0, Total=1482 [2022-02-15 13:02:07,474 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 164 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 359 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 13:02:07,475 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [164 Valid, 238 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 359 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 13:02:07,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4527 states. [2022-02-15 13:02:07,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4527 to 3177. [2022-02-15 13:02:07,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3177 states, 3176 states have (on average 2.413727959697733) internal successors, (7666), 3176 states have internal predecessors, (7666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:02:07,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3177 states to 3177 states and 7666 transitions. [2022-02-15 13:02:07,544 INFO L78 Accepts]: Start accepts. Automaton has 3177 states and 7666 transitions. Word has length 27 [2022-02-15 13:02:07,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:02:07,544 INFO L470 AbstractCegarLoop]: Abstraction has 3177 states and 7666 transitions. [2022-02-15 13:02:07,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:02:07,544 INFO L276 IsEmpty]: Start isEmpty. Operand 3177 states and 7666 transitions. [2022-02-15 13:02:07,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-15 13:02:07,549 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:02:07,549 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:02:07,572 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2022-02-15 13:02:07,763 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,SelfDestructingSolverStorable47 [2022-02-15 13:02:07,763 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:02:07,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:02:07,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1989709650, now seen corresponding path program 36 times [2022-02-15 13:02:07,764 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:02:07,764 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935509562] [2022-02-15 13:02:07,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:02:07,764 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:02:07,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:02:07,798 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:07,798 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:02:07,798 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935509562] [2022-02-15 13:02:07,799 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935509562] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:02:07,799 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [710127496] [2022-02-15 13:02:07,799 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-15 13:02:07,799 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:02:07,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:02:07,800 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) [2022-02-15 13:02:07,801 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-02-15 13:02:07,819 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-02-15 13:02:07,819 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 13:02:07,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-15 13:02:07,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:02:07,902 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:07,902 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:02:07,942 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:07,942 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [710127496] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:02:07,942 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:02:07,942 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 13 [2022-02-15 13:02:07,942 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931261888] [2022-02-15 13:02:07,942 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:02:07,943 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-15 13:02:07,943 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:02:07,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-15 13:02:07,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-02-15 13:02:07,943 INFO L87 Difference]: Start difference. First operand 3177 states and 7666 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) [2022-02-15 13:02:08,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:02:08,362 INFO L93 Difference]: Finished difference Result 4685 states and 10870 transitions. [2022-02-15 13:02:08,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-02-15 13:02:08,362 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 [2022-02-15 13:02:08,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:02:08,369 INFO L225 Difference]: With dead ends: 4685 [2022-02-15 13:02:08,369 INFO L226 Difference]: Without dead ends: 4682 [2022-02-15 13:02:08,370 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 424 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=603, Invalid=1119, Unknown=0, NotChecked=0, Total=1722 [2022-02-15 13:02:08,370 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 149 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 13:02:08,371 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [149 Valid, 191 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 13:02:08,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4682 states. [2022-02-15 13:02:08,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4682 to 3227. [2022-02-15 13:02:08,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3227 states, 3226 states have (on average 2.4097954122752636) internal successors, (7774), 3226 states have internal predecessors, (7774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:02:08,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3227 states to 3227 states and 7774 transitions. [2022-02-15 13:02:08,441 INFO L78 Accepts]: Start accepts. Automaton has 3227 states and 7774 transitions. Word has length 27 [2022-02-15 13:02:08,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:02:08,441 INFO L470 AbstractCegarLoop]: Abstraction has 3227 states and 7774 transitions. [2022-02-15 13:02:08,441 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) [2022-02-15 13:02:08,441 INFO L276 IsEmpty]: Start isEmpty. Operand 3227 states and 7774 transitions. [2022-02-15 13:02:08,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-15 13:02:08,446 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:02:08,446 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:02:08,473 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2022-02-15 13:02:08,661 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,SelfDestructingSolverStorable48 [2022-02-15 13:02:08,661 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:02:08,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:02:08,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1119091828, now seen corresponding path program 37 times [2022-02-15 13:02:08,662 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:02:08,662 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745168947] [2022-02-15 13:02:08,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:02:08,662 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:02:08,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:02:08,707 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:08,708 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:02:08,708 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745168947] [2022-02-15 13:02:08,708 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745168947] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:02:08,708 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1509033608] [2022-02-15 13:02:08,708 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-15 13:02:08,708 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:02:08,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:02:08,709 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) [2022-02-15 13:02:08,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-02-15 13:02:08,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:02:08,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-15 13:02:08,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:02:08,846 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:08,846 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:02:08,898 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:08,899 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1509033608] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:02:08,899 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:02:08,899 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2022-02-15 13:02:08,899 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985991462] [2022-02-15 13:02:08,899 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:02:08,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-15 13:02:08,899 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:02:08,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-15 13:02:08,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-02-15 13:02:08,900 INFO L87 Difference]: Start difference. First operand 3227 states and 7774 transitions. Second operand has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 15 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) [2022-02-15 13:02:09,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:02:09,258 INFO L93 Difference]: Finished difference Result 5003 states and 11695 transitions. [2022-02-15 13:02:09,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-02-15 13:02:09,258 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 15 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 27 [2022-02-15 13:02:09,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:02:09,264 INFO L225 Difference]: With dead ends: 5003 [2022-02-15 13:02:09,264 INFO L226 Difference]: Without dead ends: 4965 [2022-02-15 13:02:09,265 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 461 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=512, Invalid=1210, Unknown=0, NotChecked=0, Total=1722 [2022-02-15 13:02:09,265 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 194 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:02:09,265 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [194 Valid, 200 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 313 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 13:02:09,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4965 states. [2022-02-15 13:02:09,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4965 to 3763. [2022-02-15 13:02:09,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3763 states, 3762 states have (on average 2.4066985645933014) internal successors, (9054), 3762 states have internal predecessors, (9054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:02:09,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3763 states to 3763 states and 9054 transitions. [2022-02-15 13:02:09,326 INFO L78 Accepts]: Start accepts. Automaton has 3763 states and 9054 transitions. Word has length 27 [2022-02-15 13:02:09,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:02:09,326 INFO L470 AbstractCegarLoop]: Abstraction has 3763 states and 9054 transitions. [2022-02-15 13:02:09,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 15 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) [2022-02-15 13:02:09,326 INFO L276 IsEmpty]: Start isEmpty. Operand 3763 states and 9054 transitions. [2022-02-15 13:02:09,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-15 13:02:09,330 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:02:09,330 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:02:09,346 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2022-02-15 13:02:09,530 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,SelfDestructingSolverStorable49 [2022-02-15 13:02:09,531 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:02:09,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:02:09,531 INFO L85 PathProgramCache]: Analyzing trace with hash -325429520, now seen corresponding path program 38 times [2022-02-15 13:02:09,531 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:02:09,531 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941967046] [2022-02-15 13:02:09,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:02:09,531 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:02:09,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:02:09,565 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:09,565 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:02:09,565 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941967046] [2022-02-15 13:02:09,565 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941967046] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:02:09,565 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [368927274] [2022-02-15 13:02:09,565 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-15 13:02:09,565 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:02:09,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:02:09,566 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) [2022-02-15 13:02:09,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-02-15 13:02:09,586 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-15 13:02:09,586 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 13:02:09,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-15 13:02:09,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:02:09,689 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:09,690 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:02:09,739 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:09,740 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [368927274] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:02:09,740 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:02:09,740 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 7] total 13 [2022-02-15 13:02:09,740 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963500114] [2022-02-15 13:02:09,740 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:02:09,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-15 13:02:09,740 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:02:09,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-15 13:02:09,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2022-02-15 13:02:09,741 INFO L87 Difference]: Start difference. First operand 3763 states and 9054 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) [2022-02-15 13:02:10,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:02:10,188 INFO L93 Difference]: Finished difference Result 6111 states and 14280 transitions. [2022-02-15 13:02:10,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-02-15 13:02:10,189 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 [2022-02-15 13:02:10,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:02:10,198 INFO L225 Difference]: With dead ends: 6111 [2022-02-15 13:02:10,198 INFO L226 Difference]: Without dead ends: 6108 [2022-02-15 13:02:10,199 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 484 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=546, Invalid=1014, Unknown=0, NotChecked=0, Total=1560 [2022-02-15 13:02:10,199 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 167 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 13:02:10,199 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [167 Valid, 177 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 13:02:10,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6108 states. [2022-02-15 13:02:10,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6108 to 4898. [2022-02-15 13:02:10,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4898 states, 4897 states have (on average 2.404533387788442) internal successors, (11775), 4897 states have internal predecessors, (11775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:02:10,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4898 states to 4898 states and 11775 transitions. [2022-02-15 13:02:10,285 INFO L78 Accepts]: Start accepts. Automaton has 4898 states and 11775 transitions. Word has length 27 [2022-02-15 13:02:10,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:02:10,285 INFO L470 AbstractCegarLoop]: Abstraction has 4898 states and 11775 transitions. [2022-02-15 13:02:10,285 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) [2022-02-15 13:02:10,285 INFO L276 IsEmpty]: Start isEmpty. Operand 4898 states and 11775 transitions. [2022-02-15 13:02:10,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-15 13:02:10,290 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:02:10,290 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:02:10,306 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2022-02-15 13:02:10,491 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:02:10,491 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:02:10,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:02:10,491 INFO L85 PathProgramCache]: Analyzing trace with hash 2098122898, now seen corresponding path program 39 times [2022-02-15 13:02:10,491 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:02:10,492 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319047185] [2022-02-15 13:02:10,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:02:10,492 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:02:10,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:02:10,533 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:10,533 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:02:10,533 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319047185] [2022-02-15 13:02:10,533 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319047185] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:02:10,533 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1825557343] [2022-02-15 13:02:10,533 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-15 13:02:10,533 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:02:10,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:02:10,534 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) [2022-02-15 13:02:10,562 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2022-02-15 13:02:10,566 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-15 13:02:10,566 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 13:02:10,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-15 13:02:10,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:02:10,637 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:10,638 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:02:10,679 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:10,680 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1825557343] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:02:10,680 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:02:10,680 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2022-02-15 13:02:10,680 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560415037] [2022-02-15 13:02:10,680 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:02:10,680 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-15 13:02:10,680 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:02:10,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-15 13:02:10,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-02-15 13:02:10,681 INFO L87 Difference]: Start difference. First operand 4898 states and 11775 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) [2022-02-15 13:02:10,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:02:10,839 INFO L93 Difference]: Finished difference Result 5703 states and 13619 transitions. [2022-02-15 13:02:10,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-15 13:02:10,839 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 [2022-02-15 13:02:10,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:02:10,848 INFO L225 Difference]: With dead ends: 5703 [2022-02-15 13:02:10,848 INFO L226 Difference]: Without dead ends: 5703 [2022-02-15 13:02:10,849 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 49 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2022-02-15 13:02:10,850 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 69 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:02:10,850 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 126 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 13:02:10,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5703 states. [2022-02-15 13:02:10,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5703 to 4948. [2022-02-15 13:02:10,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4948 states, 4947 states have (on average 2.4042854255104102) internal successors, (11894), 4947 states have internal predecessors, (11894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:02:10,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4948 states to 4948 states and 11894 transitions. [2022-02-15 13:02:10,933 INFO L78 Accepts]: Start accepts. Automaton has 4948 states and 11894 transitions. Word has length 27 [2022-02-15 13:02:10,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:02:10,933 INFO L470 AbstractCegarLoop]: Abstraction has 4948 states and 11894 transitions. [2022-02-15 13:02:10,933 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) [2022-02-15 13:02:10,933 INFO L276 IsEmpty]: Start isEmpty. Operand 4948 states and 11894 transitions. [2022-02-15 13:02:10,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-15 13:02:10,938 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:02:10,938 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:02:10,953 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2022-02-15 13:02:11,138 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,SelfDestructingSolverStorable51 [2022-02-15 13:02:11,138 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:02:11,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:02:11,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1099055662, now seen corresponding path program 40 times [2022-02-15 13:02:11,139 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:02:11,139 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210659465] [2022-02-15 13:02:11,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:02:11,139 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:02:11,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:02:11,200 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:11,201 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:02:11,201 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210659465] [2022-02-15 13:02:11,201 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210659465] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:02:11,201 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [173814458] [2022-02-15 13:02:11,201 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-15 13:02:11,201 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:02:11,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:02:11,202 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) [2022-02-15 13:02:11,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2022-02-15 13:02:11,228 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-15 13:02:11,228 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 13:02:11,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-15 13:02:11,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:02:11,307 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:11,307 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:02:11,365 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:11,365 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [173814458] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:02:11,365 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:02:11,365 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2022-02-15 13:02:11,365 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145463969] [2022-02-15 13:02:11,366 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:02:11,366 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-15 13:02:11,366 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:02:11,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-15 13:02:11,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-02-15 13:02:11,366 INFO L87 Difference]: Start difference. First operand 4948 states and 11894 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) [2022-02-15 13:02:11,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:02:11,473 INFO L93 Difference]: Finished difference Result 6194 states and 14713 transitions. [2022-02-15 13:02:11,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-15 13:02:11,473 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 [2022-02-15 13:02:11,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:02:11,480 INFO L225 Difference]: With dead ends: 6194 [2022-02-15 13:02:11,480 INFO L226 Difference]: Without dead ends: 6178 [2022-02-15 13:02:11,481 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=272, Unknown=0, NotChecked=0, Total=380 [2022-02-15 13:02:11,481 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 110 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:02:11,481 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 128 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 13:02:11,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6178 states. [2022-02-15 13:02:11,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6178 to 4948. [2022-02-15 13:02:11,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4948 states, 4947 states have (on average 2.404083282797655) internal successors, (11893), 4947 states have internal predecessors, (11893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:02:11,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4948 states to 4948 states and 11893 transitions. [2022-02-15 13:02:11,545 INFO L78 Accepts]: Start accepts. Automaton has 4948 states and 11893 transitions. Word has length 27 [2022-02-15 13:02:11,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:02:11,545 INFO L470 AbstractCegarLoop]: Abstraction has 4948 states and 11893 transitions. [2022-02-15 13:02:11,545 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) [2022-02-15 13:02:11,545 INFO L276 IsEmpty]: Start isEmpty. Operand 4948 states and 11893 transitions. [2022-02-15 13:02:11,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-15 13:02:11,550 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:02:11,550 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:02:11,566 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2022-02-15 13:02:11,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:02:11,751 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:02:11,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:02:11,751 INFO L85 PathProgramCache]: Analyzing trace with hash 1387633524, now seen corresponding path program 41 times [2022-02-15 13:02:11,751 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:02:11,751 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778211405] [2022-02-15 13:02:11,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:02:11,751 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:02:11,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:02:11,788 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:11,788 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:02:11,788 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778211405] [2022-02-15 13:02:11,788 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778211405] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:02:11,788 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [70364520] [2022-02-15 13:02:11,788 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-15 13:02:11,788 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:02:11,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:02:11,789 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) [2022-02-15 13:02:11,792 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2022-02-15 13:02:11,808 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-15 13:02:11,809 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 13:02:11,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-15 13:02:11,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:02:11,888 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:11,888 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:02:11,937 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:11,937 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [70364520] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:02:11,937 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:02:11,937 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2022-02-15 13:02:11,937 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111058294] [2022-02-15 13:02:11,937 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:02:11,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-15 13:02:11,938 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:02:11,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-15 13:02:11,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2022-02-15 13:02:11,938 INFO L87 Difference]: Start difference. First operand 4948 states and 11893 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) [2022-02-15 13:02:12,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:02:12,145 INFO L93 Difference]: Finished difference Result 5593 states and 13250 transitions. [2022-02-15 13:02:12,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-15 13:02:12,145 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 [2022-02-15 13:02:12,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:02:12,151 INFO L225 Difference]: With dead ends: 5593 [2022-02-15 13:02:12,151 INFO L226 Difference]: Without dead ends: 5593 [2022-02-15 13:02:12,151 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=180, Invalid=372, Unknown=0, NotChecked=0, Total=552 [2022-02-15 13:02:12,152 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 76 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:02:12,152 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 183 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 13:02:12,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5593 states. [2022-02-15 13:02:12,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5593 to 5023. [2022-02-15 13:02:12,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5023 states, 5022 states have (on average 2.4034249303066506) internal successors, (12070), 5022 states have internal predecessors, (12070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:02:12,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5023 states to 5023 states and 12070 transitions. [2022-02-15 13:02:12,234 INFO L78 Accepts]: Start accepts. Automaton has 5023 states and 12070 transitions. Word has length 27 [2022-02-15 13:02:12,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:02:12,234 INFO L470 AbstractCegarLoop]: Abstraction has 5023 states and 12070 transitions. [2022-02-15 13:02:12,235 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) [2022-02-15 13:02:12,235 INFO L276 IsEmpty]: Start isEmpty. Operand 5023 states and 12070 transitions. [2022-02-15 13:02:12,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-15 13:02:12,242 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:02:12,242 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:02:12,265 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2022-02-15 13:02:12,465 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,SelfDestructingSolverStorable53 [2022-02-15 13:02:12,465 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:02:12,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:02:12,465 INFO L85 PathProgramCache]: Analyzing trace with hash 223291890, now seen corresponding path program 42 times [2022-02-15 13:02:12,466 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:02:12,466 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285387601] [2022-02-15 13:02:12,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:02:12,466 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:02:12,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:02:12,501 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:12,501 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:02:12,502 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285387601] [2022-02-15 13:02:12,502 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285387601] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:02:12,502 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [799533903] [2022-02-15 13:02:12,502 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-15 13:02:12,502 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:02:12,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:02:12,503 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) [2022-02-15 13:02:12,503 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2022-02-15 13:02:12,521 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-15 13:02:12,521 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 13:02:12,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-15 13:02:12,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:02:12,605 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:12,605 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:02:12,646 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:12,646 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [799533903] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:02:12,646 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:02:12,646 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2022-02-15 13:02:12,646 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100609728] [2022-02-15 13:02:12,646 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:02:12,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-15 13:02:12,646 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:02:12,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-15 13:02:12,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2022-02-15 13:02:12,647 INFO L87 Difference]: Start difference. First operand 5023 states and 12070 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) [2022-02-15 13:02:12,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:02:12,849 INFO L93 Difference]: Finished difference Result 6424 states and 15145 transitions. [2022-02-15 13:02:12,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-02-15 13:02:12,849 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 [2022-02-15 13:02:12,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:02:12,856 INFO L225 Difference]: With dead ends: 6424 [2022-02-15 13:02:12,856 INFO L226 Difference]: Without dead ends: 6410 [2022-02-15 13:02:12,857 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=235, Invalid=635, Unknown=0, NotChecked=0, Total=870 [2022-02-15 13:02:12,857 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 223 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:02:12,857 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [223 Valid, 112 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 13:02:12,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6410 states. [2022-02-15 13:02:12,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6410 to 5222. [2022-02-15 13:02:12,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5222 states, 5221 states have (on average 2.411798506033327) internal successors, (12592), 5221 states have internal predecessors, (12592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:02:12,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5222 states to 5222 states and 12592 transitions. [2022-02-15 13:02:12,991 INFO L78 Accepts]: Start accepts. Automaton has 5222 states and 12592 transitions. Word has length 27 [2022-02-15 13:02:12,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:02:12,992 INFO L470 AbstractCegarLoop]: Abstraction has 5222 states and 12592 transitions. [2022-02-15 13:02:12,992 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) [2022-02-15 13:02:12,992 INFO L276 IsEmpty]: Start isEmpty. Operand 5222 states and 12592 transitions. [2022-02-15 13:02:12,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-15 13:02:12,998 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:02:12,999 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:02:13,022 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2022-02-15 13:02:13,221 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:02:13,222 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:02:13,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:02:13,222 INFO L85 PathProgramCache]: Analyzing trace with hash 647549868, now seen corresponding path program 43 times [2022-02-15 13:02:13,222 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:02:13,222 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943345793] [2022-02-15 13:02:13,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:02:13,222 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:02:13,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:02:13,259 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:13,259 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:02:13,259 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943345793] [2022-02-15 13:02:13,259 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943345793] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:02:13,260 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2136757218] [2022-02-15 13:02:13,260 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-15 13:02:13,260 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:02:13,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:02:13,261 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) [2022-02-15 13:02:13,284 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2022-02-15 13:02:13,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:02:13,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-15 13:02:13,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:02:13,369 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:13,369 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:02:13,409 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:13,409 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2136757218] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:02:13,410 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:02:13,410 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2022-02-15 13:02:13,410 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083246908] [2022-02-15 13:02:13,410 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:02:13,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-15 13:02:13,410 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:02:13,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-15 13:02:13,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2022-02-15 13:02:13,410 INFO L87 Difference]: Start difference. First operand 5222 states and 12592 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) [2022-02-15 13:02:13,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:02:13,760 INFO L93 Difference]: Finished difference Result 6346 states and 14943 transitions. [2022-02-15 13:02:13,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-02-15 13:02:13,761 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 [2022-02-15 13:02:13,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:02:13,769 INFO L225 Difference]: With dead ends: 6346 [2022-02-15 13:02:13,769 INFO L226 Difference]: Without dead ends: 6346 [2022-02-15 13:02:13,769 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=425, Invalid=907, Unknown=0, NotChecked=0, Total=1332 [2022-02-15 13:02:13,769 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 107 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 351 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:02:13,770 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 223 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 351 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 13:02:13,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6346 states. [2022-02-15 13:02:13,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6346 to 5473. [2022-02-15 13:02:13,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5473 states, 5472 states have (on average 2.4089912280701755) internal successors, (13182), 5472 states have internal predecessors, (13182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:02:13,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5473 states to 5473 states and 13182 transitions. [2022-02-15 13:02:13,856 INFO L78 Accepts]: Start accepts. Automaton has 5473 states and 13182 transitions. Word has length 27 [2022-02-15 13:02:13,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:02:13,856 INFO L470 AbstractCegarLoop]: Abstraction has 5473 states and 13182 transitions. [2022-02-15 13:02:13,856 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) [2022-02-15 13:02:13,856 INFO L276 IsEmpty]: Start isEmpty. Operand 5473 states and 13182 transitions. [2022-02-15 13:02:13,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-15 13:02:13,861 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:02:13,861 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:02:13,877 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2022-02-15 13:02:14,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:02:14,062 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:02:14,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:02:14,062 INFO L85 PathProgramCache]: Analyzing trace with hash 41420270, now seen corresponding path program 44 times [2022-02-15 13:02:14,062 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:02:14,062 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318203014] [2022-02-15 13:02:14,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:02:14,062 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:02:14,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:02:14,103 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:14,103 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:02:14,103 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318203014] [2022-02-15 13:02:14,103 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318203014] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:02:14,103 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [685336713] [2022-02-15 13:02:14,103 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-15 13:02:14,104 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:02:14,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:02:14,105 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) [2022-02-15 13:02:14,105 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2022-02-15 13:02:14,123 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-15 13:02:14,123 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 13:02:14,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-15 13:02:14,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:02:14,202 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:14,203 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:02:14,249 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:14,250 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [685336713] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:02:14,250 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:02:14,250 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2022-02-15 13:02:14,250 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355389317] [2022-02-15 13:02:14,250 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:02:14,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-15 13:02:14,250 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:02:14,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-15 13:02:14,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-02-15 13:02:14,250 INFO L87 Difference]: Start difference. First operand 5473 states and 13182 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) [2022-02-15 13:02:14,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:02:14,519 INFO L93 Difference]: Finished difference Result 7393 states and 17489 transitions. [2022-02-15 13:02:14,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-02-15 13:02:14,519 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 [2022-02-15 13:02:14,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:02:14,529 INFO L225 Difference]: With dead ends: 7393 [2022-02-15 13:02:14,529 INFO L226 Difference]: Without dead ends: 7377 [2022-02-15 13:02:14,529 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=293, Invalid=829, Unknown=0, NotChecked=0, Total=1122 [2022-02-15 13:02:14,529 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 242 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:02:14,530 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [242 Valid, 145 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 13:02:14,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7377 states. [2022-02-15 13:02:14,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7377 to 6211. [2022-02-15 13:02:14,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6211 states, 6210 states have (on average 2.4033816425120773) internal successors, (14925), 6210 states have internal predecessors, (14925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:02:14,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6211 states to 6211 states and 14925 transitions. [2022-02-15 13:02:14,648 INFO L78 Accepts]: Start accepts. Automaton has 6211 states and 14925 transitions. Word has length 27 [2022-02-15 13:02:14,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:02:14,648 INFO L470 AbstractCegarLoop]: Abstraction has 6211 states and 14925 transitions. [2022-02-15 13:02:14,648 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) [2022-02-15 13:02:14,648 INFO L276 IsEmpty]: Start isEmpty. Operand 6211 states and 14925 transitions. [2022-02-15 13:02:14,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-15 13:02:14,653 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:02:14,653 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:02:14,669 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2022-02-15 13:02:14,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2022-02-15 13:02:14,854 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:02:14,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:02:14,854 INFO L85 PathProgramCache]: Analyzing trace with hash -1834793356, now seen corresponding path program 45 times [2022-02-15 13:02:14,854 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:02:14,854 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585372674] [2022-02-15 13:02:14,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:02:14,854 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:02:14,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:02:14,896 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:14,897 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:02:14,897 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585372674] [2022-02-15 13:02:14,897 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585372674] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:02:14,897 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [199266335] [2022-02-15 13:02:14,897 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-15 13:02:14,897 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:02:14,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:02:14,898 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) [2022-02-15 13:02:14,898 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2022-02-15 13:02:14,916 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-15 13:02:14,916 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 13:02:14,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-15 13:02:14,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:02:15,004 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:15,004 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:02:15,044 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:15,044 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [199266335] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:02:15,044 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:02:15,045 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2022-02-15 13:02:15,045 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472949206] [2022-02-15 13:02:15,045 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:02:15,045 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-15 13:02:15,045 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:02:15,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-15 13:02:15,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-02-15 13:02:15,045 INFO L87 Difference]: Start difference. First operand 6211 states and 14925 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) [2022-02-15 13:02:15,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:02:15,441 INFO L93 Difference]: Finished difference Result 7527 states and 17693 transitions. [2022-02-15 13:02:15,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-02-15 13:02:15,442 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 [2022-02-15 13:02:15,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:02:15,451 INFO L225 Difference]: With dead ends: 7527 [2022-02-15 13:02:15,451 INFO L226 Difference]: Without dead ends: 7527 [2022-02-15 13:02:15,452 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 349 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=568, Invalid=1072, Unknown=0, NotChecked=0, Total=1640 [2022-02-15 13:02:15,452 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 129 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 13:02:15,452 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [129 Valid, 249 Invalid, 443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 13:02:15,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7527 states. [2022-02-15 13:02:15,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7527 to 6569. [2022-02-15 13:02:15,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6569 states, 6568 states have (on average 2.4141291108404386) internal successors, (15856), 6568 states have internal predecessors, (15856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:02:15,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6569 states to 6569 states and 15856 transitions. [2022-02-15 13:02:15,574 INFO L78 Accepts]: Start accepts. Automaton has 6569 states and 15856 transitions. Word has length 27 [2022-02-15 13:02:15,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:02:15,574 INFO L470 AbstractCegarLoop]: Abstraction has 6569 states and 15856 transitions. [2022-02-15 13:02:15,574 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) [2022-02-15 13:02:15,574 INFO L276 IsEmpty]: Start isEmpty. Operand 6569 states and 15856 transitions. [2022-02-15 13:02:15,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-15 13:02:15,579 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:02:15,579 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:02:15,595 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2022-02-15 13:02:15,780 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,SelfDestructingSolverStorable57 [2022-02-15 13:02:15,780 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:02:15,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:02:15,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1764821874, now seen corresponding path program 46 times [2022-02-15 13:02:15,780 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:02:15,780 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667359035] [2022-02-15 13:02:15,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:02:15,780 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:02:15,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:02:15,828 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:15,828 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:02:15,828 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667359035] [2022-02-15 13:02:15,829 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667359035] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:02:15,829 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [691222541] [2022-02-15 13:02:15,829 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-15 13:02:15,829 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:02:15,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:02:15,830 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) [2022-02-15 13:02:15,831 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2022-02-15 13:02:15,848 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-15 13:02:15,848 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 13:02:15,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-15 13:02:15,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:02:15,929 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:15,929 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:02:15,977 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:15,977 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [691222541] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:02:15,977 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:02:15,977 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2022-02-15 13:02:15,977 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932781678] [2022-02-15 13:02:15,977 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:02:15,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-15 13:02:15,978 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:02:15,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-15 13:02:15,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2022-02-15 13:02:15,978 INFO L87 Difference]: Start difference. First operand 6569 states and 15856 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) [2022-02-15 13:02:16,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:02:16,283 INFO L93 Difference]: Finished difference Result 8303 states and 19745 transitions. [2022-02-15 13:02:16,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-02-15 13:02:16,283 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 [2022-02-15 13:02:16,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:02:16,294 INFO L225 Difference]: With dead ends: 8303 [2022-02-15 13:02:16,294 INFO L226 Difference]: Without dead ends: 8297 [2022-02-15 13:02:16,294 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=303, Invalid=819, Unknown=0, NotChecked=0, Total=1122 [2022-02-15 13:02:16,295 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 191 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:02:16,295 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [191 Valid, 188 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 13:02:16,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8297 states. [2022-02-15 13:02:16,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8297 to 6809. [2022-02-15 13:02:16,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6809 states, 6808 states have (on average 2.4159811985898942) internal successors, (16448), 6808 states have internal predecessors, (16448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:02:16,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6809 states to 6809 states and 16448 transitions. [2022-02-15 13:02:16,446 INFO L78 Accepts]: Start accepts. Automaton has 6809 states and 16448 transitions. Word has length 27 [2022-02-15 13:02:16,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:02:16,446 INFO L470 AbstractCegarLoop]: Abstraction has 6809 states and 16448 transitions. [2022-02-15 13:02:16,446 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) [2022-02-15 13:02:16,446 INFO L276 IsEmpty]: Start isEmpty. Operand 6809 states and 16448 transitions. [2022-02-15 13:02:16,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-15 13:02:16,452 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:02:16,452 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:02:16,468 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2022-02-15 13:02:16,652 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,SelfDestructingSolverStorable58 [2022-02-15 13:02:16,653 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:02:16,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:02:16,653 INFO L85 PathProgramCache]: Analyzing trace with hash -831267730, now seen corresponding path program 47 times [2022-02-15 13:02:16,653 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:02:16,653 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864106744] [2022-02-15 13:02:16,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:02:16,654 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:02:16,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:02:16,706 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:16,707 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:02:16,707 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864106744] [2022-02-15 13:02:16,707 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864106744] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:02:16,707 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1875697865] [2022-02-15 13:02:16,707 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-15 13:02:16,707 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:02:16,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:02:16,708 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) [2022-02-15 13:02:16,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2022-02-15 13:02:16,731 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-15 13:02:16,731 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 13:02:16,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-15 13:02:16,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:02:16,840 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:16,840 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:02:16,899 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:16,899 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1875697865] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:02:16,899 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:02:16,899 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2022-02-15 13:02:16,899 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704428450] [2022-02-15 13:02:16,899 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:02:16,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-15 13:02:16,900 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:02:16,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-15 13:02:16,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-02-15 13:02:16,900 INFO L87 Difference]: Start difference. First operand 6809 states and 16448 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) [2022-02-15 13:02:17,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:02:17,401 INFO L93 Difference]: Finished difference Result 8107 states and 19029 transitions. [2022-02-15 13:02:17,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-02-15 13:02:17,401 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 [2022-02-15 13:02:17,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:02:17,411 INFO L225 Difference]: With dead ends: 8107 [2022-02-15 13:02:17,412 INFO L226 Difference]: Without dead ends: 8104 [2022-02-15 13:02:17,412 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 614 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=578, Invalid=1314, Unknown=0, NotChecked=0, Total=1892 [2022-02-15 13:02:17,412 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 233 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 366 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 13:02:17,412 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [233 Valid, 229 Invalid, 407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 366 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 13:02:17,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8104 states. [2022-02-15 13:02:17,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8104 to 6516. [2022-02-15 13:02:17,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6516 states, 6515 states have (on average 2.399846508058327) internal successors, (15635), 6515 states have internal predecessors, (15635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:02:17,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6516 states to 6516 states and 15635 transitions. [2022-02-15 13:02:17,511 INFO L78 Accepts]: Start accepts. Automaton has 6516 states and 15635 transitions. Word has length 27 [2022-02-15 13:02:17,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:02:17,511 INFO L470 AbstractCegarLoop]: Abstraction has 6516 states and 15635 transitions. [2022-02-15 13:02:17,511 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) [2022-02-15 13:02:17,511 INFO L276 IsEmpty]: Start isEmpty. Operand 6516 states and 15635 transitions. [2022-02-15 13:02:17,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-15 13:02:17,516 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:02:17,516 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:02:17,532 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2022-02-15 13:02:17,717 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,SelfDestructingSolverStorable59 [2022-02-15 13:02:17,717 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:02:17,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:02:17,717 INFO L85 PathProgramCache]: Analyzing trace with hash -479540978, now seen corresponding path program 48 times [2022-02-15 13:02:17,717 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:02:17,717 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359566583] [2022-02-15 13:02:17,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:02:17,717 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:02:17,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:02:17,750 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:17,751 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:02:17,751 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359566583] [2022-02-15 13:02:17,751 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359566583] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:02:17,751 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [269956047] [2022-02-15 13:02:17,751 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-15 13:02:17,751 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:02:17,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:02:17,752 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) [2022-02-15 13:02:17,752 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2022-02-15 13:02:17,769 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-02-15 13:02:17,770 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 13:02:17,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-15 13:02:17,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:02:17,868 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:17,868 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:02:17,908 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:17,908 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [269956047] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:02:17,908 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:02:17,908 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2022-02-15 13:02:17,908 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278648805] [2022-02-15 13:02:17,908 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:02:17,908 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-15 13:02:17,908 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:02:17,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-15 13:02:17,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2022-02-15 13:02:17,908 INFO L87 Difference]: Start difference. First operand 6516 states and 15635 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) [2022-02-15 13:02:18,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:02:18,186 INFO L93 Difference]: Finished difference Result 7119 states and 16802 transitions. [2022-02-15 13:02:18,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-02-15 13:02:18,186 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 [2022-02-15 13:02:18,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:02:18,194 INFO L225 Difference]: With dead ends: 7119 [2022-02-15 13:02:18,194 INFO L226 Difference]: Without dead ends: 7113 [2022-02-15 13:02:18,194 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=367, Invalid=689, Unknown=0, NotChecked=0, Total=1056 [2022-02-15 13:02:18,195 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 117 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:02:18,195 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 227 Invalid, 338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 13:02:18,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7113 states. [2022-02-15 13:02:18,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7113 to 5894. [2022-02-15 13:02:18,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5894 states, 5893 states have (on average 2.400644832852537) internal successors, (14147), 5893 states have internal predecessors, (14147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:02:18,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5894 states to 5894 states and 14147 transitions. [2022-02-15 13:02:18,264 INFO L78 Accepts]: Start accepts. Automaton has 5894 states and 14147 transitions. Word has length 27 [2022-02-15 13:02:18,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:02:18,264 INFO L470 AbstractCegarLoop]: Abstraction has 5894 states and 14147 transitions. [2022-02-15 13:02:18,264 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) [2022-02-15 13:02:18,264 INFO L276 IsEmpty]: Start isEmpty. Operand 5894 states and 14147 transitions. [2022-02-15 13:02:18,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-15 13:02:18,268 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:02:18,268 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:02:18,284 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2022-02-15 13:02:18,468 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:02:18,469 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:02:18,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:02:18,469 INFO L85 PathProgramCache]: Analyzing trace with hash -962748526, now seen corresponding path program 49 times [2022-02-15 13:02:18,469 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:02:18,469 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192928765] [2022-02-15 13:02:18,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:02:18,469 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:02:18,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:02:18,505 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:18,505 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:02:18,505 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192928765] [2022-02-15 13:02:18,505 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192928765] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:02:18,506 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [832817009] [2022-02-15 13:02:18,506 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-15 13:02:18,506 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:02:18,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:02:18,507 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) [2022-02-15 13:02:18,528 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2022-02-15 13:02:18,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:02:18,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-15 13:02:18,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:02:18,626 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:18,626 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:02:18,668 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:18,668 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [832817009] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:02:18,668 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:02:18,668 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2022-02-15 13:02:18,668 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516943848] [2022-02-15 13:02:18,668 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:02:18,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-15 13:02:18,669 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:02:18,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-15 13:02:18,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-02-15 13:02:18,669 INFO L87 Difference]: Start difference. First operand 5894 states and 14147 transitions. Second operand has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 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) [2022-02-15 13:02:18,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:02:18,985 INFO L93 Difference]: Finished difference Result 6833 states and 16077 transitions. [2022-02-15 13:02:18,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-02-15 13:02:18,986 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 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 27 [2022-02-15 13:02:18,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:02:18,996 INFO L225 Difference]: With dead ends: 6833 [2022-02-15 13:02:18,996 INFO L226 Difference]: Without dead ends: 6829 [2022-02-15 13:02:18,996 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=340, Invalid=782, Unknown=0, NotChecked=0, Total=1122 [2022-02-15 13:02:18,997 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 98 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 366 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:02:18,997 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 212 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 366 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 13:02:19,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6829 states. [2022-02-15 13:02:19,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6829 to 5972. [2022-02-15 13:02:19,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5972 states, 5971 states have (on average 2.400602914084743) internal successors, (14334), 5971 states have internal predecessors, (14334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:02:19,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5972 states to 5972 states and 14334 transitions. [2022-02-15 13:02:19,108 INFO L78 Accepts]: Start accepts. Automaton has 5972 states and 14334 transitions. Word has length 27 [2022-02-15 13:02:19,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:02:19,108 INFO L470 AbstractCegarLoop]: Abstraction has 5972 states and 14334 transitions. [2022-02-15 13:02:19,108 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 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) [2022-02-15 13:02:19,108 INFO L276 IsEmpty]: Start isEmpty. Operand 5972 states and 14334 transitions. [2022-02-15 13:02:19,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-15 13:02:19,114 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:02:19,114 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:02:19,137 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0 [2022-02-15 13:02:19,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:02:19,331 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:02:19,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:02:19,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1736206930, now seen corresponding path program 50 times [2022-02-15 13:02:19,332 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:02:19,332 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355511273] [2022-02-15 13:02:19,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:02:19,332 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:02:19,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:02:19,364 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:19,365 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:02:19,365 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355511273] [2022-02-15 13:02:19,365 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355511273] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:02:19,365 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2042569632] [2022-02-15 13:02:19,365 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-15 13:02:19,365 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:02:19,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:02:19,366 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) [2022-02-15 13:02:19,397 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2022-02-15 13:02:19,398 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-15 13:02:19,398 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 13:02:19,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-15 13:02:19,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:02:19,491 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:19,491 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:02:19,532 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:19,532 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2042569632] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:02:19,532 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:02:19,532 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 13 [2022-02-15 13:02:19,532 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315710795] [2022-02-15 13:02:19,532 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:02:19,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-15 13:02:19,533 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:02:19,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-15 13:02:19,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-02-15 13:02:19,533 INFO L87 Difference]: Start difference. First operand 5972 states and 14334 transitions. Second operand has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 13 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) [2022-02-15 13:02:19,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:02:19,865 INFO L93 Difference]: Finished difference Result 7209 states and 16949 transitions. [2022-02-15 13:02:19,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-02-15 13:02:19,865 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 13 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 27 [2022-02-15 13:02:19,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:02:19,874 INFO L225 Difference]: With dead ends: 7209 [2022-02-15 13:02:19,874 INFO L226 Difference]: Without dead ends: 7207 [2022-02-15 13:02:19,874 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=390, Invalid=800, Unknown=0, NotChecked=0, Total=1190 [2022-02-15 13:02:19,875 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 92 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:02:19,875 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 198 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 348 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 13:02:19,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7207 states. [2022-02-15 13:02:19,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7207 to 5960. [2022-02-15 13:02:19,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5960 states, 5959 states have (on average 2.4005705655311296) internal successors, (14305), 5959 states have internal predecessors, (14305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:02:19,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5960 states to 5960 states and 14305 transitions. [2022-02-15 13:02:19,986 INFO L78 Accepts]: Start accepts. Automaton has 5960 states and 14305 transitions. Word has length 27 [2022-02-15 13:02:19,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:02:19,986 INFO L470 AbstractCegarLoop]: Abstraction has 5960 states and 14305 transitions. [2022-02-15 13:02:19,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 13 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) [2022-02-15 13:02:19,986 INFO L276 IsEmpty]: Start isEmpty. Operand 5960 states and 14305 transitions. [2022-02-15 13:02:19,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-15 13:02:19,991 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:02:19,991 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:02:20,012 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2022-02-15 13:02:20,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:02:20,203 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:02:20,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:02:20,204 INFO L85 PathProgramCache]: Analyzing trace with hash 105879442, now seen corresponding path program 51 times [2022-02-15 13:02:20,204 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:02:20,204 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811935262] [2022-02-15 13:02:20,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:02:20,204 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:02:20,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:02:20,237 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:20,238 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:02:20,238 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811935262] [2022-02-15 13:02:20,238 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811935262] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:02:20,238 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [484315604] [2022-02-15 13:02:20,238 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-15 13:02:20,238 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:02:20,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:02:20,239 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) [2022-02-15 13:02:20,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2022-02-15 13:02:20,257 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-02-15 13:02:20,258 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 13:02:20,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-15 13:02:20,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:02:20,370 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:20,370 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:02:20,412 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:20,412 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [484315604] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:02:20,412 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:02:20,412 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 13 [2022-02-15 13:02:20,412 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112037322] [2022-02-15 13:02:20,412 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:02:20,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-15 13:02:20,412 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:02:20,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-15 13:02:20,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-02-15 13:02:20,413 INFO L87 Difference]: Start difference. First operand 5960 states and 14305 transitions. Second operand has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 13 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) [2022-02-15 13:02:20,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:02:20,798 INFO L93 Difference]: Finished difference Result 7671 states and 18014 transitions. [2022-02-15 13:02:20,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-02-15 13:02:20,798 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 13 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 27 [2022-02-15 13:02:20,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:02:20,807 INFO L225 Difference]: With dead ends: 7671 [2022-02-15 13:02:20,808 INFO L226 Difference]: Without dead ends: 7671 [2022-02-15 13:02:20,808 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 408 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=603, Invalid=1119, Unknown=0, NotChecked=0, Total=1722 [2022-02-15 13:02:20,808 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 152 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 353 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:02:20,809 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [152 Valid, 199 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 353 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 13:02:20,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7671 states. [2022-02-15 13:02:20,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7671 to 6423. [2022-02-15 13:02:20,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6423 states, 6422 states have (on average 2.4040797259420743) internal successors, (15439), 6422 states have internal predecessors, (15439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:02:20,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6423 states to 6423 states and 15439 transitions. [2022-02-15 13:02:20,894 INFO L78 Accepts]: Start accepts. Automaton has 6423 states and 15439 transitions. Word has length 27 [2022-02-15 13:02:20,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:02:20,894 INFO L470 AbstractCegarLoop]: Abstraction has 6423 states and 15439 transitions. [2022-02-15 13:02:20,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 13 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) [2022-02-15 13:02:20,894 INFO L276 IsEmpty]: Start isEmpty. Operand 6423 states and 15439 transitions. [2022-02-15 13:02:20,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-15 13:02:20,900 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:02:20,900 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:02:20,915 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Ended with exit code 0 [2022-02-15 13:02:21,100 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:02:21,100 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:02:21,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:02:21,101 INFO L85 PathProgramCache]: Analyzing trace with hash 1461131820, now seen corresponding path program 52 times [2022-02-15 13:02:21,101 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:02:21,101 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105326780] [2022-02-15 13:02:21,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:02:21,101 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:02:21,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:02:21,134 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-15 13:02:21,135 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:02:21,135 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105326780] [2022-02-15 13:02:21,135 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105326780] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:02:21,135 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1882775603] [2022-02-15 13:02:21,135 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-15 13:02:21,135 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:02:21,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:02:21,136 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) [2022-02-15 13:02:21,137 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2022-02-15 13:02:21,154 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-15 13:02:21,154 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 13:02:21,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-15 13:02:21,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:02:21,254 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:21,254 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:02:21,295 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-15 13:02:21,296 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1882775603] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:02:21,296 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:02:21,296 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 13 [2022-02-15 13:02:21,296 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063630867] [2022-02-15 13:02:21,296 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:02:21,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-15 13:02:21,296 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:02:21,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-15 13:02:21,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2022-02-15 13:02:21,297 INFO L87 Difference]: Start difference. First operand 6423 states and 15439 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) [2022-02-15 13:02:21,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:02:21,634 INFO L93 Difference]: Finished difference Result 7487 states and 17614 transitions. [2022-02-15 13:02:21,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-02-15 13:02:21,634 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 [2022-02-15 13:02:21,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:02:21,644 INFO L225 Difference]: With dead ends: 7487 [2022-02-15 13:02:21,644 INFO L226 Difference]: Without dead ends: 7478 [2022-02-15 13:02:21,644 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=430, Invalid=830, Unknown=0, NotChecked=0, Total=1260 [2022-02-15 13:02:21,645 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 162 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:02:21,645 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [162 Valid, 204 Invalid, 338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 13:02:21,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7478 states. [2022-02-15 13:02:21,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7478 to 5692. [2022-02-15 13:02:21,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5692 states, 5691 states have (on average 2.392725355824987) internal successors, (13617), 5691 states have internal predecessors, (13617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:02:21,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5692 states to 5692 states and 13617 transitions. [2022-02-15 13:02:21,741 INFO L78 Accepts]: Start accepts. Automaton has 5692 states and 13617 transitions. Word has length 27 [2022-02-15 13:02:21,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:02:21,741 INFO L470 AbstractCegarLoop]: Abstraction has 5692 states and 13617 transitions. [2022-02-15 13:02:21,741 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) [2022-02-15 13:02:21,742 INFO L276 IsEmpty]: Start isEmpty. Operand 5692 states and 13617 transitions. [2022-02-15 13:02:21,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-15 13:02:21,748 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:02:21,748 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:02:21,770 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2022-02-15 13:02:21,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:02:21,970 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:02:21,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:02:21,970 INFO L85 PathProgramCache]: Analyzing trace with hash 954785554, now seen corresponding path program 53 times [2022-02-15 13:02:21,971 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:02:21,971 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640743047] [2022-02-15 13:02:21,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:02:21,971 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:02:21,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:02:22,006 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:22,006 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:02:22,006 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640743047] [2022-02-15 13:02:22,007 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640743047] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:02:22,007 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [634653749] [2022-02-15 13:02:22,007 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-15 13:02:22,007 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:02:22,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:02:22,008 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) [2022-02-15 13:02:22,033 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2022-02-15 13:02:22,038 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-02-15 13:02:22,038 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 13:02:22,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-15 13:02:22,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:02:22,131 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:22,132 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:02:22,181 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:22,181 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [634653749] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:02:22,181 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:02:22,181 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2022-02-15 13:02:22,181 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746030407] [2022-02-15 13:02:22,181 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:02:22,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-15 13:02:22,181 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:02:22,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-15 13:02:22,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2022-02-15 13:02:22,182 INFO L87 Difference]: Start difference. First operand 5692 states and 13617 transitions. Second operand has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 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) [2022-02-15 13:02:22,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:02:22,485 INFO L93 Difference]: Finished difference Result 7031 states and 16507 transitions. [2022-02-15 13:02:22,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-02-15 13:02:22,485 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 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 [2022-02-15 13:02:22,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:02:22,493 INFO L225 Difference]: With dead ends: 7031 [2022-02-15 13:02:22,493 INFO L226 Difference]: Without dead ends: 7007 [2022-02-15 13:02:22,493 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=373, Invalid=817, Unknown=0, NotChecked=0, Total=1190 [2022-02-15 13:02:22,494 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 148 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:02:22,494 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [148 Valid, 179 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 13:02:22,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7007 states. [2022-02-15 13:02:22,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7007 to 5831. [2022-02-15 13:02:22,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5831 states, 5830 states have (on average 2.398456260720412) internal successors, (13983), 5830 states have internal predecessors, (13983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:02:22,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5831 states to 5831 states and 13983 transitions. [2022-02-15 13:02:22,569 INFO L78 Accepts]: Start accepts. Automaton has 5831 states and 13983 transitions. Word has length 27 [2022-02-15 13:02:22,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:02:22,569 INFO L470 AbstractCegarLoop]: Abstraction has 5831 states and 13983 transitions. [2022-02-15 13:02:22,570 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 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) [2022-02-15 13:02:22,570 INFO L276 IsEmpty]: Start isEmpty. Operand 5831 states and 13983 transitions. [2022-02-15 13:02:22,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-15 13:02:22,574 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:02:22,574 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:02:22,590 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2022-02-15 13:02:22,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2022-02-15 13:02:22,775 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:02:22,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:02:22,775 INFO L85 PathProgramCache]: Analyzing trace with hash -2001501008, now seen corresponding path program 54 times [2022-02-15 13:02:22,775 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:02:22,775 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312099991] [2022-02-15 13:02:22,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:02:22,775 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:02:22,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:02:22,836 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:22,836 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:02:22,837 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312099991] [2022-02-15 13:02:22,837 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312099991] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:02:22,837 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1961656196] [2022-02-15 13:02:22,837 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-15 13:02:22,837 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:02:22,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:02:22,838 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) [2022-02-15 13:02:22,839 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2022-02-15 13:02:22,861 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-15 13:02:22,861 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 13:02:22,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-15 13:02:22,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:02:22,991 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:22,991 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:02:23,042 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:23,043 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1961656196] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:02:23,043 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:02:23,043 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2022-02-15 13:02:23,043 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331640052] [2022-02-15 13:02:23,043 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:02:23,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-15 13:02:23,043 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:02:23,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-15 13:02:23,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2022-02-15 13:02:23,044 INFO L87 Difference]: Start difference. First operand 5831 states and 13983 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) [2022-02-15 13:02:23,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:02:23,421 INFO L93 Difference]: Finished difference Result 7242 states and 16991 transitions. [2022-02-15 13:02:23,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-02-15 13:02:23,421 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 27 [2022-02-15 13:02:23,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:02:23,429 INFO L225 Difference]: With dead ends: 7242 [2022-02-15 13:02:23,429 INFO L226 Difference]: Without dead ends: 7238 [2022-02-15 13:02:23,429 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=366, Invalid=894, Unknown=0, NotChecked=0, Total=1260 [2022-02-15 13:02:23,430 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 116 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 13:02:23,430 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 226 Invalid, 431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 399 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 13:02:23,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7238 states. [2022-02-15 13:02:23,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7238 to 6132. [2022-02-15 13:02:23,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6132 states, 6131 states have (on average 2.391779481324417) internal successors, (14664), 6131 states have internal predecessors, (14664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:02:23,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6132 states to 6132 states and 14664 transitions. [2022-02-15 13:02:23,503 INFO L78 Accepts]: Start accepts. Automaton has 6132 states and 14664 transitions. Word has length 27 [2022-02-15 13:02:23,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:02:23,503 INFO L470 AbstractCegarLoop]: Abstraction has 6132 states and 14664 transitions. [2022-02-15 13:02:23,503 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) [2022-02-15 13:02:23,503 INFO L276 IsEmpty]: Start isEmpty. Operand 6132 states and 14664 transitions. [2022-02-15 13:02:23,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-15 13:02:23,508 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:02:23,508 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:02:23,527 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Ended with exit code 0 [2022-02-15 13:02:23,720 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,SelfDestructingSolverStorable66 [2022-02-15 13:02:23,720 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:02:23,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:02:23,720 INFO L85 PathProgramCache]: Analyzing trace with hash 234495532, now seen corresponding path program 55 times [2022-02-15 13:02:23,720 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:02:23,720 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843530793] [2022-02-15 13:02:23,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:02:23,721 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:02:23,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:02:23,753 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:23,754 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:02:23,754 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843530793] [2022-02-15 13:02:23,754 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843530793] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:02:23,754 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2121132541] [2022-02-15 13:02:23,754 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-15 13:02:23,754 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:02:23,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:02:23,755 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) [2022-02-15 13:02:23,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2022-02-15 13:02:23,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:02:23,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-15 13:02:23,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:02:23,885 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:23,885 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:02:23,935 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:23,935 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2121132541] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:02:23,935 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:02:23,935 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 14 [2022-02-15 13:02:23,935 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617609271] [2022-02-15 13:02:23,935 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:02:23,936 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-15 13:02:23,936 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:02:23,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-15 13:02:23,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2022-02-15 13:02:23,936 INFO L87 Difference]: Start difference. First operand 6132 states and 14664 transitions. Second operand has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 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) [2022-02-15 13:02:24,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:02:24,340 INFO L93 Difference]: Finished difference Result 8492 states and 19891 transitions. [2022-02-15 13:02:24,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-02-15 13:02:24,340 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 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 27 [2022-02-15 13:02:24,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:02:24,351 INFO L225 Difference]: With dead ends: 8492 [2022-02-15 13:02:24,351 INFO L226 Difference]: Without dead ends: 8490 [2022-02-15 13:02:24,351 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 401 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=467, Invalid=1015, Unknown=0, NotChecked=0, Total=1482 [2022-02-15 13:02:24,351 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 117 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 468 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 13:02:24,352 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 277 Invalid, 493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 468 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 13:02:24,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8490 states. [2022-02-15 13:02:24,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8490 to 7007. [2022-02-15 13:02:24,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7007 states, 7006 states have (on average 2.396089066514416) internal successors, (16787), 7006 states have internal predecessors, (16787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:02:24,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7007 states to 7007 states and 16787 transitions. [2022-02-15 13:02:24,461 INFO L78 Accepts]: Start accepts. Automaton has 7007 states and 16787 transitions. Word has length 27 [2022-02-15 13:02:24,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:02:24,461 INFO L470 AbstractCegarLoop]: Abstraction has 7007 states and 16787 transitions. [2022-02-15 13:02:24,461 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 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) [2022-02-15 13:02:24,461 INFO L276 IsEmpty]: Start isEmpty. Operand 7007 states and 16787 transitions. [2022-02-15 13:02:24,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-15 13:02:24,467 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:02:24,467 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:02:24,482 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Ended with exit code 0 [2022-02-15 13:02:24,667 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,SelfDestructingSolverStorable67 [2022-02-15 13:02:24,667 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:02:24,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:02:24,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1272293840, now seen corresponding path program 56 times [2022-02-15 13:02:24,668 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:02:24,668 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942184429] [2022-02-15 13:02:24,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:02:24,668 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:02:24,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:02:24,696 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:24,696 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:02:24,696 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942184429] [2022-02-15 13:02:24,696 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942184429] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:02:24,696 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [777769469] [2022-02-15 13:02:24,697 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-15 13:02:24,697 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:02:24,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:02:24,698 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) [2022-02-15 13:02:24,699 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2022-02-15 13:02:24,716 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-15 13:02:24,716 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 13:02:24,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-15 13:02:24,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:02:24,812 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:24,812 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:02:24,852 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:24,852 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [777769469] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:02:24,852 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:02:24,852 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 7] total 13 [2022-02-15 13:02:24,852 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049224373] [2022-02-15 13:02:24,853 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:02:24,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-15 13:02:24,853 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:02:24,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-15 13:02:24,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2022-02-15 13:02:24,853 INFO L87 Difference]: Start difference. First operand 7007 states and 16787 transitions. Second operand has 13 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 13 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) [2022-02-15 13:02:25,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:02:25,243 INFO L93 Difference]: Finished difference Result 9905 states and 23301 transitions. [2022-02-15 13:02:25,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-02-15 13:02:25,243 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 13 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 27 [2022-02-15 13:02:25,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:02:25,255 INFO L225 Difference]: With dead ends: 9905 [2022-02-15 13:02:25,256 INFO L226 Difference]: Without dead ends: 9905 [2022-02-15 13:02:25,256 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 480 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=546, Invalid=1014, Unknown=0, NotChecked=0, Total=1560 [2022-02-15 13:02:25,256 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 130 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:02:25,256 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [130 Valid, 194 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 13:02:25,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9905 states. [2022-02-15 13:02:25,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9905 to 8467. [2022-02-15 13:02:25,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8467 states, 8466 states have (on average 2.394991731632412) internal successors, (20276), 8466 states have internal predecessors, (20276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:02:25,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8467 states to 8467 states and 20276 transitions. [2022-02-15 13:02:25,369 INFO L78 Accepts]: Start accepts. Automaton has 8467 states and 20276 transitions. Word has length 27 [2022-02-15 13:02:25,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:02:25,369 INFO L470 AbstractCegarLoop]: Abstraction has 8467 states and 20276 transitions. [2022-02-15 13:02:25,369 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 13 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) [2022-02-15 13:02:25,370 INFO L276 IsEmpty]: Start isEmpty. Operand 8467 states and 20276 transitions. [2022-02-15 13:02:25,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-15 13:02:25,375 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:02:25,375 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:02:25,391 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Ended with exit code 0 [2022-02-15 13:02:25,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68,61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:02:25,576 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:02:25,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:02:25,577 INFO L85 PathProgramCache]: Analyzing trace with hash 82958538, now seen corresponding path program 57 times [2022-02-15 13:02:25,577 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:02:25,577 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89911110] [2022-02-15 13:02:25,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:02:25,577 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:02:25,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:02:25,609 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-15 13:02:25,609 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:02:25,609 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89911110] [2022-02-15 13:02:25,609 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89911110] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:02:25,610 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [572216386] [2022-02-15 13:02:25,610 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-15 13:02:25,610 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:02:25,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:02:25,611 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) [2022-02-15 13:02:25,612 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2022-02-15 13:02:25,649 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-02-15 13:02:25,649 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 13:02:25,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-15 13:02:25,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:02:25,762 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:25,762 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:02:25,810 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-15 13:02:25,810 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [572216386] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:02:25,810 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:02:25,810 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 7] total 13 [2022-02-15 13:02:25,811 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815236654] [2022-02-15 13:02:25,811 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:02:25,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-15 13:02:25,811 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:02:25,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-15 13:02:25,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2022-02-15 13:02:25,812 INFO L87 Difference]: Start difference. First operand 8467 states and 20276 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) [2022-02-15 13:02:26,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:02:26,215 INFO L93 Difference]: Finished difference Result 9754 states and 22974 transitions. [2022-02-15 13:02:26,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-02-15 13:02:26,215 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 [2022-02-15 13:02:26,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:02:26,228 INFO L225 Difference]: With dead ends: 9754 [2022-02-15 13:02:26,228 INFO L226 Difference]: Without dead ends: 9748 [2022-02-15 13:02:26,229 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 398 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=466, Invalid=940, Unknown=0, NotChecked=0, Total=1406 [2022-02-15 13:02:26,229 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 145 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 13:02:26,229 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [145 Valid, 189 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 13:02:26,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9748 states. [2022-02-15 13:02:26,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9748 to 8287. [2022-02-15 13:02:26,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8287 states, 8286 states have (on average 2.3880038619357955) internal successors, (19787), 8286 states have internal predecessors, (19787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:02:26,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8287 states to 8287 states and 19787 transitions. [2022-02-15 13:02:26,340 INFO L78 Accepts]: Start accepts. Automaton has 8287 states and 19787 transitions. Word has length 27 [2022-02-15 13:02:26,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:02:26,340 INFO L470 AbstractCegarLoop]: Abstraction has 8287 states and 19787 transitions. [2022-02-15 13:02:26,341 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) [2022-02-15 13:02:26,341 INFO L276 IsEmpty]: Start isEmpty. Operand 8287 states and 19787 transitions. [2022-02-15 13:02:26,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-15 13:02:26,346 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:02:26,346 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:02:26,362 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Ended with exit code 0 [2022-02-15 13:02:26,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2022-02-15 13:02:26,547 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:02:26,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:02:26,547 INFO L85 PathProgramCache]: Analyzing trace with hash -423387728, now seen corresponding path program 58 times [2022-02-15 13:02:26,547 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:02:26,547 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230435512] [2022-02-15 13:02:26,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:02:26,547 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:02:26,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:02:26,587 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-15 13:02:26,587 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:02:26,588 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230435512] [2022-02-15 13:02:26,588 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230435512] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:02:26,588 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1198648313] [2022-02-15 13:02:26,588 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-15 13:02:26,588 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:02:26,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:02:26,589 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) [2022-02-15 13:02:26,591 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2022-02-15 13:02:26,618 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-15 13:02:26,619 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 13:02:26,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-15 13:02:26,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:02:26,729 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:26,730 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:02:26,778 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-15 13:02:26,778 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1198648313] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:02:26,778 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:02:26,778 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 14 [2022-02-15 13:02:26,778 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350256496] [2022-02-15 13:02:26,778 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:02:26,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-15 13:02:26,779 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:02:26,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-15 13:02:26,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2022-02-15 13:02:26,779 INFO L87 Difference]: Start difference. First operand 8287 states and 19787 transitions. Second operand has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 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) [2022-02-15 13:02:27,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:02:27,164 INFO L93 Difference]: Finished difference Result 9921 states and 23343 transitions. [2022-02-15 13:02:27,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-02-15 13:02:27,164 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 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 [2022-02-15 13:02:27,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:02:27,177 INFO L225 Difference]: With dead ends: 9921 [2022-02-15 13:02:27,177 INFO L226 Difference]: Without dead ends: 9897 [2022-02-15 13:02:27,177 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 366 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=411, Invalid=921, Unknown=0, NotChecked=0, Total=1332 [2022-02-15 13:02:27,178 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 163 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:02:27,178 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [163 Valid, 171 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 13:02:27,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9897 states. [2022-02-15 13:02:27,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9897 to 8623. [2022-02-15 13:02:27,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8623 states, 8622 states have (on average 2.38842495940617) internal successors, (20593), 8622 states have internal predecessors, (20593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:02:27,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8623 states to 8623 states and 20593 transitions. [2022-02-15 13:02:27,336 INFO L78 Accepts]: Start accepts. Automaton has 8623 states and 20593 transitions. Word has length 27 [2022-02-15 13:02:27,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:02:27,337 INFO L470 AbstractCegarLoop]: Abstraction has 8623 states and 20593 transitions. [2022-02-15 13:02:27,337 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 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) [2022-02-15 13:02:27,337 INFO L276 IsEmpty]: Start isEmpty. Operand 8623 states and 20593 transitions. [2022-02-15 13:02:27,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-15 13:02:27,344 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:02:27,344 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:02:27,366 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Ended with exit code 0 [2022-02-15 13:02:27,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,63 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:02:27,565 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:02:27,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:02:27,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1317948430, now seen corresponding path program 59 times [2022-02-15 13:02:27,565 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:02:27,565 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714283454] [2022-02-15 13:02:27,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:02:27,566 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:02:27,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:02:27,605 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:27,605 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:02:27,605 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714283454] [2022-02-15 13:02:27,606 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714283454] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:02:27,606 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1405511857] [2022-02-15 13:02:27,606 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-15 13:02:27,606 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:02:27,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:02:27,607 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) [2022-02-15 13:02:27,607 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2022-02-15 13:02:27,627 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-02-15 13:02:27,627 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 13:02:27,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-15 13:02:27,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:02:27,730 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:27,731 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:02:27,774 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:27,774 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1405511857] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:02:27,774 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:02:27,774 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2022-02-15 13:02:27,774 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581744785] [2022-02-15 13:02:27,774 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:02:27,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-15 13:02:27,774 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:02:27,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-15 13:02:27,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-02-15 13:02:27,775 INFO L87 Difference]: Start difference. First operand 8623 states and 20593 transitions. Second operand has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 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) [2022-02-15 13:02:28,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:02:28,060 INFO L93 Difference]: Finished difference Result 10314 states and 24325 transitions. [2022-02-15 13:02:28,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-02-15 13:02:28,060 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 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 [2022-02-15 13:02:28,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:02:28,074 INFO L225 Difference]: With dead ends: 10314 [2022-02-15 13:02:28,074 INFO L226 Difference]: Without dead ends: 10272 [2022-02-15 13:02:28,075 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=364, Invalid=896, Unknown=0, NotChecked=0, Total=1260 [2022-02-15 13:02:28,075 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 139 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:02:28,075 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [139 Valid, 163 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 13:02:28,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10272 states. [2022-02-15 13:02:28,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10272 to 9112. [2022-02-15 13:02:28,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9112 states, 9111 states have (on average 2.388541323674679) internal successors, (21762), 9111 states have internal predecessors, (21762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:02:28,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9112 states to 9112 states and 21762 transitions. [2022-02-15 13:02:28,193 INFO L78 Accepts]: Start accepts. Automaton has 9112 states and 21762 transitions. Word has length 27 [2022-02-15 13:02:28,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:02:28,194 INFO L470 AbstractCegarLoop]: Abstraction has 9112 states and 21762 transitions. [2022-02-15 13:02:28,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 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) [2022-02-15 13:02:28,194 INFO L276 IsEmpty]: Start isEmpty. Operand 9112 states and 21762 transitions. [2022-02-15 13:02:28,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-02-15 13:02:28,201 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:02:28,202 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:02:28,217 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Ended with exit code 0 [2022-02-15 13:02:28,402 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,64 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:02:28,402 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:02:28,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:02:28,402 INFO L85 PathProgramCache]: Analyzing trace with hash -1174225325, now seen corresponding path program 60 times [2022-02-15 13:02:28,402 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:02:28,402 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934677662] [2022-02-15 13:02:28,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:02:28,403 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:02:28,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:02:28,446 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:28,446 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:02:28,446 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934677662] [2022-02-15 13:02:28,446 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934677662] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:02:28,446 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1750631309] [2022-02-15 13:02:28,446 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-15 13:02:28,446 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:02:28,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:02:28,447 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) [2022-02-15 13:02:28,448 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2022-02-15 13:02:28,467 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-15 13:02:28,467 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 13:02:28,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 15 conjunts are in the unsatisfiable core [2022-02-15 13:02:28,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:02:28,563 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:28,564 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:02:28,670 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:28,670 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1750631309] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:02:28,670 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:02:28,670 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 4 [2022-02-15 13:02:28,670 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750318026] [2022-02-15 13:02:28,670 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:02:28,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-15 13:02:28,671 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:02:28,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-15 13:02:28,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-02-15 13:02:28,671 INFO L87 Difference]: Start difference. First operand 9112 states and 21762 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) [2022-02-15 13:02:28,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:02:28,746 INFO L93 Difference]: Finished difference Result 10611 states and 25338 transitions. [2022-02-15 13:02:28,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-15 13:02:28,746 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 [2022-02-15 13:02:28,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:02:28,791 INFO L225 Difference]: With dead ends: 10611 [2022-02-15 13:02:28,791 INFO L226 Difference]: Without dead ends: 10581 [2022-02-15 13:02:28,792 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 [2022-02-15 13:02:28,792 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 31 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 13:02:28,792 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 168 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 13:02:28,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10581 states. [2022-02-15 13:02:28,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10581 to 9513. [2022-02-15 13:02:28,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9513 states, 9512 states have (on average 2.390138772077376) internal successors, (22735), 9512 states have internal predecessors, (22735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:02:28,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9513 states to 9513 states and 22735 transitions. [2022-02-15 13:02:28,896 INFO L78 Accepts]: Start accepts. Automaton has 9513 states and 22735 transitions. Word has length 30 [2022-02-15 13:02:28,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:02:28,896 INFO L470 AbstractCegarLoop]: Abstraction has 9513 states and 22735 transitions. [2022-02-15 13:02:28,896 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) [2022-02-15 13:02:28,896 INFO L276 IsEmpty]: Start isEmpty. Operand 9513 states and 22735 transitions. [2022-02-15 13:02:28,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-02-15 13:02:28,904 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:02:28,904 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:02:28,920 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Ended with exit code 0 [2022-02-15 13:02:29,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,65 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:02:29,105 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:02:29,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:02:29,105 INFO L85 PathProgramCache]: Analyzing trace with hash -643491135, now seen corresponding path program 61 times [2022-02-15 13:02:29,105 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:02:29,105 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269677017] [2022-02-15 13:02:29,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:02:29,105 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:02:29,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:02:29,149 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-15 13:02:29,150 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:02:29,150 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269677017] [2022-02-15 13:02:29,150 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269677017] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:02:29,150 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1449388466] [2022-02-15 13:02:29,150 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-15 13:02:29,150 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:02:29,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:02:29,151 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) [2022-02-15 13:02:29,176 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2022-02-15 13:02:29,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:02:29,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 15 conjunts are in the unsatisfiable core [2022-02-15 13:02:29,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:02:29,276 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-15 13:02:29,276 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:02:29,370 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-15 13:02:29,370 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1449388466] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:02:29,371 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:02:29,371 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 4 [2022-02-15 13:02:29,371 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849274509] [2022-02-15 13:02:29,371 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:02:29,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-15 13:02:29,371 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:02:29,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-15 13:02:29,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-02-15 13:02:29,371 INFO L87 Difference]: Start difference. First operand 9513 states and 22735 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) [2022-02-15 13:02:29,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:02:29,454 INFO L93 Difference]: Finished difference Result 12295 states and 29532 transitions. [2022-02-15 13:02:29,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-15 13:02:29,455 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 [2022-02-15 13:02:29,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:02:29,477 INFO L225 Difference]: With dead ends: 12295 [2022-02-15 13:02:29,477 INFO L226 Difference]: Without dead ends: 12259 [2022-02-15 13:02:29,477 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 [2022-02-15 13:02:29,478 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 30 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 13:02:29,478 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 170 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 13:02:29,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12259 states. [2022-02-15 13:02:29,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12259 to 10001. [2022-02-15 13:02:29,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10001 states, 10000 states have (on average 2.4045) internal successors, (24045), 10000 states have internal predecessors, (24045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:02:29,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10001 states to 10001 states and 24045 transitions. [2022-02-15 13:02:29,694 INFO L78 Accepts]: Start accepts. Automaton has 10001 states and 24045 transitions. Word has length 30 [2022-02-15 13:02:29,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:02:29,694 INFO L470 AbstractCegarLoop]: Abstraction has 10001 states and 24045 transitions. [2022-02-15 13:02:29,694 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) [2022-02-15 13:02:29,694 INFO L276 IsEmpty]: Start isEmpty. Operand 10001 states and 24045 transitions. [2022-02-15 13:02:29,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-02-15 13:02:29,702 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:02:29,702 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:02:29,717 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Ended with exit code 0 [2022-02-15 13:02:29,902 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,SelfDestructingSolverStorable73 [2022-02-15 13:02:29,902 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:02:29,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:02:29,902 INFO L85 PathProgramCache]: Analyzing trace with hash -2013310209, now seen corresponding path program 62 times [2022-02-15 13:02:29,902 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:02:29,903 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556223549] [2022-02-15 13:02:29,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:02:29,903 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:02:29,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:02:29,943 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-15 13:02:29,944 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:02:29,944 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556223549] [2022-02-15 13:02:29,944 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556223549] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:02:29,944 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [894003681] [2022-02-15 13:02:29,944 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-15 13:02:29,944 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:02:29,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:02:29,953 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) [2022-02-15 13:02:29,953 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2022-02-15 13:02:29,974 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-15 13:02:29,975 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 13:02:29,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 15 conjunts are in the unsatisfiable core [2022-02-15 13:02:29,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:02:30,067 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-15 13:02:30,067 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:02:30,169 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-15 13:02:30,169 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [894003681] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:02:30,169 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:02:30,169 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 4 [2022-02-15 13:02:30,169 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521246990] [2022-02-15 13:02:30,169 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:02:30,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-15 13:02:30,169 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:02:30,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-15 13:02:30,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-02-15 13:02:30,169 INFO L87 Difference]: Start difference. First operand 10001 states and 24045 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) [2022-02-15 13:02:30,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:02:30,241 INFO L93 Difference]: Finished difference Result 14193 states and 34282 transitions. [2022-02-15 13:02:30,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-15 13:02:30,241 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 [2022-02-15 13:02:30,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:02:30,261 INFO L225 Difference]: With dead ends: 14193 [2022-02-15 13:02:30,262 INFO L226 Difference]: Without dead ends: 14160 [2022-02-15 13:02:30,262 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 [2022-02-15 13:02:30,262 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 29 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 13:02:30,262 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 171 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 13:02:30,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14160 states. [2022-02-15 13:02:30,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14160 to 11674. [2022-02-15 13:02:30,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11674 states, 11673 states have (on average 2.424226848282361) internal successors, (28298), 11673 states have internal predecessors, (28298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:02:30,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11674 states to 11674 states and 28298 transitions. [2022-02-15 13:02:30,431 INFO L78 Accepts]: Start accepts. Automaton has 11674 states and 28298 transitions. Word has length 30 [2022-02-15 13:02:30,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:02:30,431 INFO L470 AbstractCegarLoop]: Abstraction has 11674 states and 28298 transitions. [2022-02-15 13:02:30,431 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) [2022-02-15 13:02:30,432 INFO L276 IsEmpty]: Start isEmpty. Operand 11674 states and 28298 transitions. [2022-02-15 13:02:30,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-02-15 13:02:30,442 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:02:30,442 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:02:30,457 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Ended with exit code 0 [2022-02-15 13:02:30,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable74 [2022-02-15 13:02:30,642 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:02:30,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:02:30,643 INFO L85 PathProgramCache]: Analyzing trace with hash 485902849, now seen corresponding path program 63 times [2022-02-15 13:02:30,643 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:02:30,643 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614640682] [2022-02-15 13:02:30,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:02:30,643 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:02:30,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:02:30,690 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-15 13:02:30,691 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:02:30,691 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614640682] [2022-02-15 13:02:30,691 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614640682] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:02:30,691 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1519964328] [2022-02-15 13:02:30,691 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-15 13:02:30,691 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:02:30,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:02:30,692 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) [2022-02-15 13:02:30,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2022-02-15 13:02:30,770 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-02-15 13:02:30,770 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 13:02:30,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 15 conjunts are in the unsatisfiable core [2022-02-15 13:02:30,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:02:30,897 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-15 13:02:30,897 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:02:31,024 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-15 13:02:31,025 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1519964328] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:02:31,025 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:02:31,025 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 4 [2022-02-15 13:02:31,025 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120176650] [2022-02-15 13:02:31,025 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:02:31,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-15 13:02:31,025 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:02:31,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-15 13:02:31,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-02-15 13:02:31,026 INFO L87 Difference]: Start difference. First operand 11674 states and 28298 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) [2022-02-15 13:02:31,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:02:31,152 INFO L93 Difference]: Finished difference Result 16136 states and 39070 transitions. [2022-02-15 13:02:31,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-15 13:02:31,153 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 [2022-02-15 13:02:31,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:02:31,174 INFO L225 Difference]: With dead ends: 16136 [2022-02-15 13:02:31,174 INFO L226 Difference]: Without dead ends: 16112 [2022-02-15 13:02:31,174 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 [2022-02-15 13:02:31,175 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 28 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 13:02:31,175 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 171 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 13:02:31,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16112 states. [2022-02-15 13:02:31,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16112 to 15897. [2022-02-15 13:02:31,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15897 states, 15896 states have (on average 2.4291016607951685) internal successors, (38613), 15896 states have internal predecessors, (38613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:02:31,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15897 states to 15897 states and 38613 transitions. [2022-02-15 13:02:31,395 INFO L78 Accepts]: Start accepts. Automaton has 15897 states and 38613 transitions. Word has length 30 [2022-02-15 13:02:31,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:02:31,395 INFO L470 AbstractCegarLoop]: Abstraction has 15897 states and 38613 transitions. [2022-02-15 13:02:31,395 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) [2022-02-15 13:02:31,395 INFO L276 IsEmpty]: Start isEmpty. Operand 15897 states and 38613 transitions. [2022-02-15 13:02:31,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-15 13:02:31,412 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:02:31,412 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:02:31,428 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Ended with exit code 0 [2022-02-15 13:02:31,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable75 [2022-02-15 13:02:31,613 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:02:31,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:02:31,613 INFO L85 PathProgramCache]: Analyzing trace with hash 547519780, now seen corresponding path program 64 times [2022-02-15 13:02:31,613 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:02:31,613 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790998299] [2022-02-15 13:02:31,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:02:31,613 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:02:31,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:02:31,670 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 12 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:31,671 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:02:31,671 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790998299] [2022-02-15 13:02:31,671 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790998299] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:02:31,671 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1617707788] [2022-02-15 13:02:31,671 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-15 13:02:31,671 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:02:31,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:02:31,672 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) [2022-02-15 13:02:31,673 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2022-02-15 13:02:31,691 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-15 13:02:31,691 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 13:02:31,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-15 13:02:31,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:02:31,784 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 12 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:31,784 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:02:31,835 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 12 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:31,836 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1617707788] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:02:31,836 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:02:31,836 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 15 [2022-02-15 13:02:31,836 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662348758] [2022-02-15 13:02:31,836 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:02:31,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-15 13:02:31,836 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:02:31,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-15 13:02:31,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2022-02-15 13:02:31,836 INFO L87 Difference]: Start difference. First operand 15897 states and 38613 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) [2022-02-15 13:02:32,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:02:32,088 INFO L93 Difference]: Finished difference Result 20455 states and 49641 transitions. [2022-02-15 13:02:32,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-15 13:02:32,088 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 33 [2022-02-15 13:02:32,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:02:32,182 INFO L225 Difference]: With dead ends: 20455 [2022-02-15 13:02:32,183 INFO L226 Difference]: Without dead ends: 20455 [2022-02-15 13:02:32,183 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 [2022-02-15 13:02:32,183 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 116 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:02:32,183 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 198 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 13:02:32,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20455 states. [2022-02-15 13:02:32,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20455 to 16120. [2022-02-15 13:02:32,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16120 states, 16119 states have (on average 2.4278801414479805) internal successors, (39135), 16119 states have internal predecessors, (39135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:02:32,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16120 states to 16120 states and 39135 transitions. [2022-02-15 13:02:32,455 INFO L78 Accepts]: Start accepts. Automaton has 16120 states and 39135 transitions. Word has length 33 [2022-02-15 13:02:32,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:02:32,455 INFO L470 AbstractCegarLoop]: Abstraction has 16120 states and 39135 transitions. [2022-02-15 13:02:32,455 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) [2022-02-15 13:02:32,455 INFO L276 IsEmpty]: Start isEmpty. Operand 16120 states and 39135 transitions. [2022-02-15 13:02:32,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-15 13:02:32,472 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:02:32,472 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:02:32,488 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Ended with exit code 0 [2022-02-15 13:02:32,672 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,SelfDestructingSolverStorable76 [2022-02-15 13:02:32,672 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:02:32,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:02:32,673 INFO L85 PathProgramCache]: Analyzing trace with hash 235103698, now seen corresponding path program 65 times [2022-02-15 13:02:32,673 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:02:32,673 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064711567] [2022-02-15 13:02:32,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:02:32,673 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:02:32,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:02:32,730 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 22 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:32,730 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:02:32,730 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064711567] [2022-02-15 13:02:32,730 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064711567] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:02:32,730 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1440028777] [2022-02-15 13:02:32,731 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-15 13:02:32,731 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:02:32,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:02:32,732 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) [2022-02-15 13:02:32,732 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2022-02-15 13:02:32,751 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-02-15 13:02:32,751 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 13:02:32,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-15 13:02:32,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:02:32,852 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 22 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:32,852 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:02:32,916 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 22 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:32,916 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1440028777] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:02:32,916 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:02:32,916 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 15 [2022-02-15 13:02:32,916 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308323387] [2022-02-15 13:02:32,917 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:02:32,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-15 13:02:32,917 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:02:32,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-15 13:02:32,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2022-02-15 13:02:32,917 INFO L87 Difference]: Start difference. First operand 16120 states and 39135 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) [2022-02-15 13:02:33,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:02:33,115 INFO L93 Difference]: Finished difference Result 24604 states and 59046 transitions. [2022-02-15 13:02:33,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-15 13:02:33,115 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 33 [2022-02-15 13:02:33,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:02:33,153 INFO L225 Difference]: With dead ends: 24604 [2022-02-15 13:02:33,153 INFO L226 Difference]: Without dead ends: 24569 [2022-02-15 13:02:33,153 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=161, Invalid=439, Unknown=0, NotChecked=0, Total=600 [2022-02-15 13:02:33,153 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 124 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:02:33,153 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 152 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 13:02:33,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24569 states. [2022-02-15 13:02:33,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24569 to 16120. [2022-02-15 13:02:33,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16120 states, 16119 states have (on average 2.427756064271977) internal successors, (39133), 16119 states have internal predecessors, (39133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:02:33,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16120 states to 16120 states and 39133 transitions. [2022-02-15 13:02:33,472 INFO L78 Accepts]: Start accepts. Automaton has 16120 states and 39133 transitions. Word has length 33 [2022-02-15 13:02:33,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:02:33,472 INFO L470 AbstractCegarLoop]: Abstraction has 16120 states and 39133 transitions. [2022-02-15 13:02:33,472 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) [2022-02-15 13:02:33,472 INFO L276 IsEmpty]: Start isEmpty. Operand 16120 states and 39133 transitions. [2022-02-15 13:02:33,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-15 13:02:33,489 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:02:33,489 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:02:33,505 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Ended with exit code 0 [2022-02-15 13:02:33,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77,70 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:02:33,690 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:02:33,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:02:33,690 INFO L85 PathProgramCache]: Analyzing trace with hash 666938062, now seen corresponding path program 66 times [2022-02-15 13:02:33,690 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:02:33,690 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610116707] [2022-02-15 13:02:33,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:02:33,690 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:02:33,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:02:33,749 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 12 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:33,750 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:02:33,750 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610116707] [2022-02-15 13:02:33,750 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610116707] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:02:33,750 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1437606638] [2022-02-15 13:02:33,750 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-15 13:02:33,750 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:02:33,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:02:33,751 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) [2022-02-15 13:02:33,752 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2022-02-15 13:02:33,776 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-02-15 13:02:33,776 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 13:02:33,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-15 13:02:33,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:02:33,894 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 12 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:33,895 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:02:33,946 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 12 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:33,946 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1437606638] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:02:33,946 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:02:33,946 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 16 [2022-02-15 13:02:33,946 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644081193] [2022-02-15 13:02:33,946 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:02:33,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-15 13:02:33,946 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:02:33,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-15 13:02:33,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2022-02-15 13:02:33,947 INFO L87 Difference]: Start difference. First operand 16120 states and 39133 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) [2022-02-15 13:02:34,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:02:34,707 INFO L93 Difference]: Finished difference Result 29053 states and 69475 transitions. [2022-02-15 13:02:34,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-02-15 13:02:34,707 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 [2022-02-15 13:02:34,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:02:34,753 INFO L225 Difference]: With dead ends: 29053 [2022-02-15 13:02:34,753 INFO L226 Difference]: Without dead ends: 29043 [2022-02-15 13:02:34,754 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1803 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1351, Invalid=3341, Unknown=0, NotChecked=0, Total=4692 [2022-02-15 13:02:34,754 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 337 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 428 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 13:02:34,755 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [337 Valid, 259 Invalid, 502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 428 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 13:02:34,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29043 states. [2022-02-15 13:02:35,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29043 to 20414. [2022-02-15 13:02:35,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20414 states, 20413 states have (on average 2.4425121246264636) internal successors, (49859), 20413 states have internal predecessors, (49859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:02:35,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20414 states to 20414 states and 49859 transitions. [2022-02-15 13:02:35,169 INFO L78 Accepts]: Start accepts. Automaton has 20414 states and 49859 transitions. Word has length 33 [2022-02-15 13:02:35,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:02:35,170 INFO L470 AbstractCegarLoop]: Abstraction has 20414 states and 49859 transitions. [2022-02-15 13:02:35,170 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) [2022-02-15 13:02:35,170 INFO L276 IsEmpty]: Start isEmpty. Operand 20414 states and 49859 transitions. [2022-02-15 13:02:35,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-15 13:02:35,189 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:02:35,189 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:02:35,205 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Forceful destruction successful, exit code 0 [2022-02-15 13:02:35,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78,71 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:02:35,390 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:02:35,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:02:35,390 INFO L85 PathProgramCache]: Analyzing trace with hash -28414004, now seen corresponding path program 67 times [2022-02-15 13:02:35,391 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:02:35,391 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124793225] [2022-02-15 13:02:35,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:02:35,391 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:02:35,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:02:35,447 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 19 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:35,448 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:02:35,448 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124793225] [2022-02-15 13:02:35,448 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124793225] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:02:35,448 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [130106907] [2022-02-15 13:02:35,448 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-15 13:02:35,448 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:02:35,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:02:35,449 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) [2022-02-15 13:02:35,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2022-02-15 13:02:35,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:02:35,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-15 13:02:35,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:02:35,601 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 22 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:35,602 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:02:35,663 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 19 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:35,663 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [130106907] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:02:35,664 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:02:35,664 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 16 [2022-02-15 13:02:35,664 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540339047] [2022-02-15 13:02:35,664 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:02:35,664 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-15 13:02:35,664 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:02:35,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-15 13:02:35,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2022-02-15 13:02:35,664 INFO L87 Difference]: Start difference. First operand 20414 states and 49859 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) [2022-02-15 13:02:36,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:02:36,335 INFO L93 Difference]: Finished difference Result 23900 states and 57743 transitions. [2022-02-15 13:02:36,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-02-15 13:02:36,335 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 [2022-02-15 13:02:36,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:02:36,370 INFO L225 Difference]: With dead ends: 23900 [2022-02-15 13:02:36,370 INFO L226 Difference]: Without dead ends: 23896 [2022-02-15 13:02:36,370 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 553 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=876, Invalid=1674, Unknown=0, NotChecked=0, Total=2550 [2022-02-15 13:02:36,371 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 231 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-15 13:02:36,371 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [231 Valid, 257 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 385 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-15 13:02:36,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23896 states. [2022-02-15 13:02:36,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23896 to 21251. [2022-02-15 13:02:36,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21251 states, 21250 states have (on average 2.448) internal successors, (52020), 21250 states have internal predecessors, (52020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:02:36,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21251 states to 21251 states and 52020 transitions. [2022-02-15 13:02:36,852 INFO L78 Accepts]: Start accepts. Automaton has 21251 states and 52020 transitions. Word has length 33 [2022-02-15 13:02:36,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:02:36,852 INFO L470 AbstractCegarLoop]: Abstraction has 21251 states and 52020 transitions. [2022-02-15 13:02:36,853 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) [2022-02-15 13:02:36,853 INFO L276 IsEmpty]: Start isEmpty. Operand 21251 states and 52020 transitions. [2022-02-15 13:02:36,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-15 13:02:36,873 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:02:36,873 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:02:36,889 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Ended with exit code 0 [2022-02-15 13:02:37,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2022-02-15 13:02:37,074 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:02:37,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:02:37,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1670463688, now seen corresponding path program 68 times [2022-02-15 13:02:37,075 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:02:37,075 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902298721] [2022-02-15 13:02:37,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:02:37,075 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:02:37,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:02:37,131 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 19 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:37,131 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:02:37,132 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902298721] [2022-02-15 13:02:37,132 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902298721] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:02:37,132 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [297775724] [2022-02-15 13:02:37,132 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-15 13:02:37,132 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:02:37,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:02:37,133 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) [2022-02-15 13:02:37,157 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2022-02-15 13:02:37,162 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-15 13:02:37,162 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 13:02:37,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-15 13:02:37,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:02:37,282 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 22 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:37,282 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:02:37,335 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 19 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:37,335 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [297775724] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:02:37,335 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:02:37,335 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 16 [2022-02-15 13:02:37,335 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341009933] [2022-02-15 13:02:37,335 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:02:37,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-15 13:02:37,336 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:02:37,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-15 13:02:37,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2022-02-15 13:02:37,336 INFO L87 Difference]: Start difference. First operand 21251 states and 52020 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) [2022-02-15 13:02:38,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:02:38,077 INFO L93 Difference]: Finished difference Result 24375 states and 58715 transitions. [2022-02-15 13:02:38,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-02-15 13:02:38,078 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 [2022-02-15 13:02:38,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:02:38,120 INFO L225 Difference]: With dead ends: 24375 [2022-02-15 13:02:38,120 INFO L226 Difference]: Without dead ends: 24375 [2022-02-15 13:02:38,121 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 881 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=1199, Invalid=2341, Unknown=0, NotChecked=0, Total=3540 [2022-02-15 13:02:38,121 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 175 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-15 13:02:38,121 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [175 Valid, 332 Invalid, 601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 564 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-15 13:02:38,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24375 states. [2022-02-15 13:02:38,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24375 to 19878. [2022-02-15 13:02:38,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19878 states, 19877 states have (on average 2.442923982492328) internal successors, (48558), 19877 states have internal predecessors, (48558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:02:38,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19878 states to 19878 states and 48558 transitions. [2022-02-15 13:02:38,650 INFO L78 Accepts]: Start accepts. Automaton has 19878 states and 48558 transitions. Word has length 33 [2022-02-15 13:02:38,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:02:38,650 INFO L470 AbstractCegarLoop]: Abstraction has 19878 states and 48558 transitions. [2022-02-15 13:02:38,650 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) [2022-02-15 13:02:38,651 INFO L276 IsEmpty]: Start isEmpty. Operand 19878 states and 48558 transitions. [2022-02-15 13:02:38,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-15 13:02:38,669 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:02:38,669 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:02:38,684 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Ended with exit code 0 [2022-02-15 13:02:38,869 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,73 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:02:38,869 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:02:38,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:02:38,870 INFO L85 PathProgramCache]: Analyzing trace with hash 2022190440, now seen corresponding path program 69 times [2022-02-15 13:02:38,870 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:02:38,870 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968932936] [2022-02-15 13:02:38,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:02:38,870 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:02:38,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:02:38,924 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 19 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:38,925 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:02:38,925 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968932936] [2022-02-15 13:02:38,925 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968932936] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:02:38,925 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1993707793] [2022-02-15 13:02:38,925 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-15 13:02:38,925 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:02:38,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:02:38,926 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) [2022-02-15 13:02:38,949 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2022-02-15 13:02:38,953 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-15 13:02:38,953 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 13:02:38,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-15 13:02:38,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:02:39,057 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 19 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:39,057 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:02:39,107 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 19 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:39,107 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1993707793] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:02:39,107 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:02:39,107 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 16 [2022-02-15 13:02:39,107 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361993184] [2022-02-15 13:02:39,107 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:02:39,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-15 13:02:39,107 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:02:39,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-15 13:02:39,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2022-02-15 13:02:39,108 INFO L87 Difference]: Start difference. First operand 19878 states and 48558 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) [2022-02-15 13:02:39,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:02:39,653 INFO L93 Difference]: Finished difference Result 28185 states and 67521 transitions. [2022-02-15 13:02:39,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-02-15 13:02:39,653 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 [2022-02-15 13:02:39,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:02:39,700 INFO L225 Difference]: With dead ends: 28185 [2022-02-15 13:02:39,700 INFO L226 Difference]: Without dead ends: 28179 [2022-02-15 13:02:39,700 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 632 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=571, Invalid=1685, Unknown=0, NotChecked=0, Total=2256 [2022-02-15 13:02:39,701 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 321 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 13:02:39,701 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [321 Valid, 216 Invalid, 495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 406 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 13:02:39,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28179 states. [2022-02-15 13:02:40,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28179 to 17968. [2022-02-15 13:02:40,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17968 states, 17967 states have (on average 2.4288974230533755) internal successors, (43640), 17967 states have internal predecessors, (43640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:02:40,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17968 states to 17968 states and 43640 transitions. [2022-02-15 13:02:40,122 INFO L78 Accepts]: Start accepts. Automaton has 17968 states and 43640 transitions. Word has length 33 [2022-02-15 13:02:40,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:02:40,122 INFO L470 AbstractCegarLoop]: Abstraction has 17968 states and 43640 transitions. [2022-02-15 13:02:40,122 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) [2022-02-15 13:02:40,122 INFO L276 IsEmpty]: Start isEmpty. Operand 17968 states and 43640 transitions. [2022-02-15 13:02:40,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-15 13:02:40,139 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:02:40,139 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:02:40,155 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Ended with exit code 0 [2022-02-15 13:02:40,340 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,74 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:02:40,340 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:02:40,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:02:40,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1515844174, now seen corresponding path program 70 times [2022-02-15 13:02:40,340 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:02:40,340 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734185369] [2022-02-15 13:02:40,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:02:40,341 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:02:40,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:02:40,390 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 17 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:40,391 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:02:40,391 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734185369] [2022-02-15 13:02:40,391 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734185369] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:02:40,391 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [451408142] [2022-02-15 13:02:40,391 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-15 13:02:40,391 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:02:40,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:02:40,392 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) [2022-02-15 13:02:40,412 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2022-02-15 13:02:40,420 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-15 13:02:40,420 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 13:02:40,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-15 13:02:40,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:02:40,522 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 17 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:40,523 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:02:40,573 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 17 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:40,573 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [451408142] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:02:40,573 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:02:40,573 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 16 [2022-02-15 13:02:40,573 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995181533] [2022-02-15 13:02:40,573 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:02:40,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-15 13:02:40,573 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:02:40,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-15 13:02:40,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2022-02-15 13:02:40,574 INFO L87 Difference]: Start difference. First operand 17968 states and 43640 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) [2022-02-15 13:02:41,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:02:41,247 INFO L93 Difference]: Finished difference Result 26897 states and 64354 transitions. [2022-02-15 13:02:41,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-02-15 13:02:41,247 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 [2022-02-15 13:02:41,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:02:41,288 INFO L225 Difference]: With dead ends: 26897 [2022-02-15 13:02:41,288 INFO L226 Difference]: Without dead ends: 26873 [2022-02-15 13:02:41,289 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 584 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=502, Invalid=1568, Unknown=0, NotChecked=0, Total=2070 [2022-02-15 13:02:41,289 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 312 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 13:02:41,289 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [312 Valid, 203 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 13:02:41,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26873 states. [2022-02-15 13:02:41,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26873 to 18288. [2022-02-15 13:02:41,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18288 states, 18287 states have (on average 2.4269699786733745) internal successors, (44382), 18287 states have internal predecessors, (44382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:02:41,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18288 states to 18288 states and 44382 transitions. [2022-02-15 13:02:41,598 INFO L78 Accepts]: Start accepts. Automaton has 18288 states and 44382 transitions. Word has length 33 [2022-02-15 13:02:41,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:02:41,599 INFO L470 AbstractCegarLoop]: Abstraction has 18288 states and 44382 transitions. [2022-02-15 13:02:41,599 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) [2022-02-15 13:02:41,599 INFO L276 IsEmpty]: Start isEmpty. Operand 18288 states and 44382 transitions. [2022-02-15 13:02:41,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-15 13:02:41,616 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:02:41,616 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:02:41,632 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Ended with exit code 0 [2022-02-15 13:02:41,816 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,75 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:02:41,816 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:02:41,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:02:41,817 INFO L85 PathProgramCache]: Analyzing trace with hash -1037786964, now seen corresponding path program 71 times [2022-02-15 13:02:41,817 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:02:41,817 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507375245] [2022-02-15 13:02:41,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:02:41,817 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:02:41,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:02:41,867 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 14 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:41,867 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:02:41,867 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507375245] [2022-02-15 13:02:41,868 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507375245] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:02:41,868 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [525987704] [2022-02-15 13:02:41,868 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-15 13:02:41,868 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:02:41,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:02:41,870 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) [2022-02-15 13:02:41,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2022-02-15 13:02:41,901 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-15 13:02:41,902 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 13:02:41,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-15 13:02:41,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:02:42,007 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 14 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:42,008 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:02:42,060 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 14 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:42,061 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [525987704] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:02:42,061 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:02:42,061 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 16 [2022-02-15 13:02:42,061 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984797201] [2022-02-15 13:02:42,061 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:02:42,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-15 13:02:42,061 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:02:42,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-15 13:02:42,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2022-02-15 13:02:42,062 INFO L87 Difference]: Start difference. First operand 18288 states and 44382 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) [2022-02-15 13:02:42,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:02:42,641 INFO L93 Difference]: Finished difference Result 27620 states and 66056 transitions. [2022-02-15 13:02:42,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-02-15 13:02:42,641 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 [2022-02-15 13:02:42,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:02:42,696 INFO L225 Difference]: With dead ends: 27620 [2022-02-15 13:02:42,696 INFO L226 Difference]: Without dead ends: 27578 [2022-02-15 13:02:42,697 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 525 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=452, Invalid=1440, Unknown=0, NotChecked=0, Total=1892 [2022-02-15 13:02:42,697 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 296 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 13:02:42,697 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [296 Valid, 193 Invalid, 418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 13:02:42,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27578 states. [2022-02-15 13:02:43,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27578 to 18474. [2022-02-15 13:02:43,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18474 states, 18473 states have (on average 2.426081307854707) internal successors, (44817), 18473 states have internal predecessors, (44817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:02:43,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18474 states to 18474 states and 44817 transitions. [2022-02-15 13:02:43,141 INFO L78 Accepts]: Start accepts. Automaton has 18474 states and 44817 transitions. Word has length 33 [2022-02-15 13:02:43,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:02:43,141 INFO L470 AbstractCegarLoop]: Abstraction has 18474 states and 44817 transitions. [2022-02-15 13:02:43,141 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) [2022-02-15 13:02:43,141 INFO L276 IsEmpty]: Start isEmpty. Operand 18474 states and 44817 transitions. [2022-02-15 13:02:43,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-15 13:02:43,160 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:02:43,160 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:02:43,175 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Ended with exit code 0 [2022-02-15 13:02:43,360 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,SelfDestructingSolverStorable83 [2022-02-15 13:02:43,361 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:02:43,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:02:43,361 INFO L85 PathProgramCache]: Analyzing trace with hash 492694926, now seen corresponding path program 72 times [2022-02-15 13:02:43,361 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:02:43,361 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246185851] [2022-02-15 13:02:43,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:02:43,361 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:02:43,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:02:43,414 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 17 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:43,414 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:02:43,414 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246185851] [2022-02-15 13:02:43,414 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246185851] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:02:43,414 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [300006745] [2022-02-15 13:02:43,414 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-15 13:02:43,414 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:02:43,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:02:43,415 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) [2022-02-15 13:02:43,416 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2022-02-15 13:02:43,451 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-15 13:02:43,451 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 13:02:43,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-15 13:02:43,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:02:43,560 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 17 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:43,560 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:02:43,613 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 17 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:43,613 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [300006745] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:02:43,613 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:02:43,613 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 16 [2022-02-15 13:02:43,613 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403496310] [2022-02-15 13:02:43,614 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:02:43,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-15 13:02:43,614 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:02:43,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-15 13:02:43,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2022-02-15 13:02:43,614 INFO L87 Difference]: Start difference. First operand 18474 states and 44817 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) [2022-02-15 13:02:44,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:02:44,015 INFO L93 Difference]: Finished difference Result 25842 states and 61833 transitions. [2022-02-15 13:02:44,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-02-15 13:02:44,015 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 [2022-02-15 13:02:44,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:02:44,052 INFO L225 Difference]: With dead ends: 25842 [2022-02-15 13:02:44,052 INFO L226 Difference]: Without dead ends: 25812 [2022-02-15 13:02:44,052 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 302 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=316, Invalid=944, Unknown=0, NotChecked=0, Total=1260 [2022-02-15 13:02:44,052 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 264 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:02:44,052 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [264 Valid, 118 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 13:02:44,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25812 states. [2022-02-15 13:02:44,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25812 to 18474. [2022-02-15 13:02:44,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18474 states, 18473 states have (on average 2.425431711145997) internal successors, (44805), 18473 states have internal predecessors, (44805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:02:44,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18474 states to 18474 states and 44805 transitions. [2022-02-15 13:02:44,345 INFO L78 Accepts]: Start accepts. Automaton has 18474 states and 44805 transitions. Word has length 33 [2022-02-15 13:02:44,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:02:44,345 INFO L470 AbstractCegarLoop]: Abstraction has 18474 states and 44805 transitions. [2022-02-15 13:02:44,345 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) [2022-02-15 13:02:44,345 INFO L276 IsEmpty]: Start isEmpty. Operand 18474 states and 44805 transitions. [2022-02-15 13:02:44,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-15 13:02:44,364 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:02:44,364 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:02:44,380 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Forceful destruction successful, exit code 0 [2022-02-15 13:02:44,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,77 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:02:44,565 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:02:44,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:02:44,565 INFO L85 PathProgramCache]: Analyzing trace with hash 947024474, now seen corresponding path program 73 times [2022-02-15 13:02:44,565 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:02:44,565 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121240145] [2022-02-15 13:02:44,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:02:44,566 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:02:44,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:02:44,613 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 17 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:44,613 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:02:44,613 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121240145] [2022-02-15 13:02:44,613 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121240145] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:02:44,613 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1577327282] [2022-02-15 13:02:44,613 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-15 13:02:44,613 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:02:44,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:02:44,614 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) [2022-02-15 13:02:44,615 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2022-02-15 13:02:44,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:02:44,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-15 13:02:44,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:02:44,743 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 22 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:44,743 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:02:44,797 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 17 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:44,797 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1577327282] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:02:44,797 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:02:44,797 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2022-02-15 13:02:44,797 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711789583] [2022-02-15 13:02:44,797 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:02:44,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-15 13:02:44,797 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:02:44,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-15 13:02:44,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2022-02-15 13:02:44,798 INFO L87 Difference]: Start difference. First operand 18474 states and 44805 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 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) [2022-02-15 13:02:45,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:02:45,368 INFO L93 Difference]: Finished difference Result 22066 states and 52977 transitions. [2022-02-15 13:02:45,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-02-15 13:02:45,368 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 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 33 [2022-02-15 13:02:45,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:02:45,403 INFO L225 Difference]: With dead ends: 22066 [2022-02-15 13:02:45,404 INFO L226 Difference]: Without dead ends: 22046 [2022-02-15 13:02:45,404 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 59 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 736 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=973, Invalid=2107, Unknown=0, NotChecked=0, Total=3080 [2022-02-15 13:02:45,404 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 255 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 458 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 13:02:45,405 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [255 Valid, 292 Invalid, 491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 458 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 13:02:45,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22046 states. [2022-02-15 13:02:45,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22046 to 19236. [2022-02-15 13:02:45,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19236 states, 19235 states have (on average 2.4252144528203794) internal successors, (46649), 19235 states have internal predecessors, (46649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:02:45,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19236 states to 19236 states and 46649 transitions. [2022-02-15 13:02:45,837 INFO L78 Accepts]: Start accepts. Automaton has 19236 states and 46649 transitions. Word has length 33 [2022-02-15 13:02:45,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:02:45,837 INFO L470 AbstractCegarLoop]: Abstraction has 19236 states and 46649 transitions. [2022-02-15 13:02:45,837 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 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) [2022-02-15 13:02:45,837 INFO L276 IsEmpty]: Start isEmpty. Operand 19236 states and 46649 transitions. [2022-02-15 13:02:45,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-15 13:02:45,856 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:02:45,856 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:02:45,872 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Forceful destruction successful, exit code 0 [2022-02-15 13:02:46,056 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,78 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:02:46,057 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:02:46,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:02:46,057 INFO L85 PathProgramCache]: Analyzing trace with hash -481451814, now seen corresponding path program 74 times [2022-02-15 13:02:46,057 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:02:46,057 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344515577] [2022-02-15 13:02:46,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:02:46,057 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:02:46,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:02:46,114 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 17 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:46,114 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:02:46,114 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344515577] [2022-02-15 13:02:46,114 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344515577] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:02:46,114 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [269689416] [2022-02-15 13:02:46,114 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-15 13:02:46,114 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:02:46,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:02:46,115 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) [2022-02-15 13:02:46,116 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2022-02-15 13:02:46,135 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-15 13:02:46,136 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 13:02:46,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-15 13:02:46,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:02:46,246 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 22 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:46,246 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:02:46,299 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 17 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:46,299 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [269689416] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:02:46,299 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:02:46,300 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 10] total 16 [2022-02-15 13:02:46,300 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156658574] [2022-02-15 13:02:46,300 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:02:46,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-15 13:02:46,300 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:02:46,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-15 13:02:46,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2022-02-15 13:02:46,300 INFO L87 Difference]: Start difference. First operand 19236 states and 46649 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) [2022-02-15 13:02:47,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:02:47,024 INFO L93 Difference]: Finished difference Result 22673 states and 54112 transitions. [2022-02-15 13:02:47,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-02-15 13:02:47,025 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 [2022-02-15 13:02:47,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:02:47,062 INFO L225 Difference]: With dead ends: 22673 [2022-02-15 13:02:47,062 INFO L226 Difference]: Without dead ends: 22661 [2022-02-15 13:02:47,063 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 963 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=1190, Invalid=2350, Unknown=0, NotChecked=0, Total=3540 [2022-02-15 13:02:47,064 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 218 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 575 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 13:02:47,064 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [218 Valid, 319 Invalid, 617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 575 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 13:02:47,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22661 states. [2022-02-15 13:02:47,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22661 to 17519. [2022-02-15 13:02:47,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17519 states, 17518 states have (on average 2.4243635118164173) internal successors, (42470), 17518 states have internal predecessors, (42470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:02:47,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17519 states to 17519 states and 42470 transitions. [2022-02-15 13:02:47,431 INFO L78 Accepts]: Start accepts. Automaton has 17519 states and 42470 transitions. Word has length 33 [2022-02-15 13:02:47,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:02:47,431 INFO L470 AbstractCegarLoop]: Abstraction has 17519 states and 42470 transitions. [2022-02-15 13:02:47,431 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) [2022-02-15 13:02:47,431 INFO L276 IsEmpty]: Start isEmpty. Operand 17519 states and 42470 transitions. [2022-02-15 13:02:47,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-15 13:02:47,448 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:02:47,448 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:02:47,464 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Ended with exit code 0 [2022-02-15 13:02:47,648 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,79 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:02:47,649 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:02:47,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:02:47,649 INFO L85 PathProgramCache]: Analyzing trace with hash -1329241080, now seen corresponding path program 75 times [2022-02-15 13:02:47,649 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:02:47,649 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946790603] [2022-02-15 13:02:47,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:02:47,649 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:02:47,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:02:47,700 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 14 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:47,700 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:02:47,700 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946790603] [2022-02-15 13:02:47,700 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946790603] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:02:47,700 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [814376941] [2022-02-15 13:02:47,700 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-15 13:02:47,701 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:02:47,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:02:47,702 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) [2022-02-15 13:02:47,707 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2022-02-15 13:02:47,777 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-02-15 13:02:47,777 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 13:02:47,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-15 13:02:47,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:02:47,902 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 22 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:47,903 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:02:47,953 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 14 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:47,953 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [814376941] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:02:47,953 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:02:47,953 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 18 [2022-02-15 13:02:47,953 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244798912] [2022-02-15 13:02:47,953 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:02:47,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:02:47,953 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:02:47,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:02:47,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:02:47,954 INFO L87 Difference]: Start difference. First operand 17519 states and 42470 transitions. Second operand has 18 states, 18 states have (on average 2.7777777777777777) internal successors, (50), 18 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:02:48,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:02:48,538 INFO L93 Difference]: Finished difference Result 22452 states and 53652 transitions. [2022-02-15 13:02:48,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-02-15 13:02:48,538 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.7777777777777777) internal successors, (50), 18 states have internal predecessors, (50), 0 states have call successors, (0), 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 [2022-02-15 13:02:48,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:02:48,573 INFO L225 Difference]: With dead ends: 22452 [2022-02-15 13:02:48,573 INFO L226 Difference]: Without dead ends: 22406 [2022-02-15 13:02:48,573 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 891 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=996, Invalid=2426, Unknown=0, NotChecked=0, Total=3422 [2022-02-15 13:02:48,573 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 268 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 417 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 13:02:48,574 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [268 Valid, 271 Invalid, 445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 417 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 13:02:48,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22406 states. [2022-02-15 13:02:48,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22406 to 18251. [2022-02-15 13:02:48,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18251 states, 18250 states have (on average 2.4206575342465753) internal successors, (44177), 18250 states have internal predecessors, (44177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:02:48,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18251 states to 18251 states and 44177 transitions. [2022-02-15 13:02:48,948 INFO L78 Accepts]: Start accepts. Automaton has 18251 states and 44177 transitions. Word has length 33 [2022-02-15 13:02:48,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:02:48,948 INFO L470 AbstractCegarLoop]: Abstraction has 18251 states and 44177 transitions. [2022-02-15 13:02:48,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.7777777777777777) internal successors, (50), 18 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:02:48,948 INFO L276 IsEmpty]: Start isEmpty. Operand 18251 states and 44177 transitions. [2022-02-15 13:02:48,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-15 13:02:48,966 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:02:48,966 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:02:48,983 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Ended with exit code 0 [2022-02-15 13:02:49,167 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,SelfDestructingSolverStorable87 [2022-02-15 13:02:49,167 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:02:49,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:02:49,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1521204868, now seen corresponding path program 76 times [2022-02-15 13:02:49,167 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:02:49,167 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875346267] [2022-02-15 13:02:49,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:02:49,168 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:02:49,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:02:49,204 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 14 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:49,204 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:02:49,205 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875346267] [2022-02-15 13:02:49,205 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875346267] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:02:49,205 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1979117369] [2022-02-15 13:02:49,205 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-15 13:02:49,205 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:02:49,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:02:49,206 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) [2022-02-15 13:02:49,206 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2022-02-15 13:02:49,224 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-15 13:02:49,224 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 13:02:49,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-15 13:02:49,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:02:49,338 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 22 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:49,338 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:02:49,387 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 14 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:49,387 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1979117369] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:02:49,387 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:02:49,387 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 9] total 16 [2022-02-15 13:02:49,387 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905806571] [2022-02-15 13:02:49,387 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:02:49,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-15 13:02:49,387 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:02:49,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-15 13:02:49,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2022-02-15 13:02:49,388 INFO L87 Difference]: Start difference. First operand 18251 states and 44177 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) [2022-02-15 13:02:50,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:02:50,104 INFO L93 Difference]: Finished difference Result 23972 states and 57036 transitions. [2022-02-15 13:02:50,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-02-15 13:02:50,105 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 [2022-02-15 13:02:50,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:02:50,142 INFO L225 Difference]: With dead ends: 23972 [2022-02-15 13:02:50,142 INFO L226 Difference]: Without dead ends: 23957 [2022-02-15 13:02:50,143 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1431 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1526, Invalid=3030, Unknown=0, NotChecked=0, Total=4556 [2022-02-15 13:02:50,143 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 266 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 13:02:50,143 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [266 Valid, 218 Invalid, 428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 380 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 13:02:50,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23957 states. [2022-02-15 13:02:50,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23957 to 19212. [2022-02-15 13:02:50,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19212 states, 19211 states have (on average 2.422882723439696) internal successors, (46546), 19211 states have internal predecessors, (46546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:02:50,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19212 states to 19212 states and 46546 transitions. [2022-02-15 13:02:50,496 INFO L78 Accepts]: Start accepts. Automaton has 19212 states and 46546 transitions. Word has length 33 [2022-02-15 13:02:50,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:02:50,496 INFO L470 AbstractCegarLoop]: Abstraction has 19212 states and 46546 transitions. [2022-02-15 13:02:50,496 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) [2022-02-15 13:02:50,496 INFO L276 IsEmpty]: Start isEmpty. Operand 19212 states and 46546 transitions. [2022-02-15 13:02:50,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-15 13:02:50,515 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:02:50,515 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:02:50,530 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Ended with exit code 0 [2022-02-15 13:02:50,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 81 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable88 [2022-02-15 13:02:50,715 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:02:50,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:02:50,716 INFO L85 PathProgramCache]: Analyzing trace with hash -317723750, now seen corresponding path program 77 times [2022-02-15 13:02:50,716 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:02:50,716 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435209182] [2022-02-15 13:02:50,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:02:50,716 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:02:50,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:02:50,763 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 17 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:50,763 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:02:50,763 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435209182] [2022-02-15 13:02:50,763 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435209182] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:02:50,763 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [623856021] [2022-02-15 13:02:50,763 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-15 13:02:50,763 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:02:50,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:02:50,764 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) [2022-02-15 13:02:50,765 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2022-02-15 13:02:50,783 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-02-15 13:02:50,783 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 13:02:50,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-15 13:02:50,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:02:50,921 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 22 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:50,921 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:02:50,978 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 17 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:50,978 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [623856021] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:02:50,978 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:02:50,978 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 19 [2022-02-15 13:02:50,978 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222780550] [2022-02-15 13:02:50,978 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:02:50,979 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-15 13:02:50,979 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:02:50,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-15 13:02:50,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2022-02-15 13:02:50,979 INFO L87 Difference]: Start difference. First operand 19212 states and 46546 transitions. Second operand has 19 states, 19 states have (on average 2.789473684210526) internal successors, (53), 19 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) [2022-02-15 13:02:51,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:02:51,639 INFO L93 Difference]: Finished difference Result 24404 states and 58210 transitions. [2022-02-15 13:02:51,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-02-15 13:02:51,639 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.789473684210526) internal successors, (53), 19 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 33 [2022-02-15 13:02:51,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:02:51,677 INFO L225 Difference]: With dead ends: 24404 [2022-02-15 13:02:51,677 INFO L226 Difference]: Without dead ends: 24340 [2022-02-15 13:02:51,678 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1147 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1034, Invalid=2748, Unknown=0, NotChecked=0, Total=3782 [2022-02-15 13:02:51,678 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 297 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 435 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 13:02:51,678 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [297 Valid, 275 Invalid, 467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 435 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 13:02:51,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24340 states. [2022-02-15 13:02:51,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24340 to 20582. [2022-02-15 13:02:52,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20582 states, 20581 states have (on average 2.418395607599242) internal successors, (49773), 20581 states have internal predecessors, (49773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:02:52,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20582 states to 20582 states and 49773 transitions. [2022-02-15 13:02:52,056 INFO L78 Accepts]: Start accepts. Automaton has 20582 states and 49773 transitions. Word has length 33 [2022-02-15 13:02:52,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:02:52,057 INFO L470 AbstractCegarLoop]: Abstraction has 20582 states and 49773 transitions. [2022-02-15 13:02:52,057 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.789473684210526) internal successors, (53), 19 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) [2022-02-15 13:02:52,057 INFO L276 IsEmpty]: Start isEmpty. Operand 20582 states and 49773 transitions. [2022-02-15 13:02:52,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-15 13:02:52,076 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:02:52,077 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:02:52,092 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Ended with exit code 0 [2022-02-15 13:02:52,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 82 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable89 [2022-02-15 13:02:52,277 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:02:52,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:02:52,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1275709594, now seen corresponding path program 78 times [2022-02-15 13:02:52,277 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:02:52,277 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390652503] [2022-02-15 13:02:52,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:02:52,278 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:02:52,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:02:52,317 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 17 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:52,317 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:02:52,317 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390652503] [2022-02-15 13:02:52,317 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390652503] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:02:52,317 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [306998759] [2022-02-15 13:02:52,318 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-15 13:02:52,318 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:02:52,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:02:52,319 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) [2022-02-15 13:02:52,319 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2022-02-15 13:02:52,340 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-02-15 13:02:52,340 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 13:02:52,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-15 13:02:52,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:02:52,481 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 22 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:52,481 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:02:52,531 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 17 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:52,531 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [306998759] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:02:52,531 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:02:52,531 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 8] total 16 [2022-02-15 13:02:52,532 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953156668] [2022-02-15 13:02:52,532 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:02:52,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-15 13:02:52,532 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:02:52,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-15 13:02:52,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2022-02-15 13:02:52,532 INFO L87 Difference]: Start difference. First operand 20582 states and 49773 transitions. Second operand has 16 states, 16 states have (on average 3.25) internal successors, (52), 16 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) [2022-02-15 13:02:53,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:02:53,350 INFO L93 Difference]: Finished difference Result 29066 states and 69261 transitions. [2022-02-15 13:02:53,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-02-15 13:02:53,350 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.25) internal successors, (52), 16 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) Word has length 33 [2022-02-15 13:02:53,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:02:53,395 INFO L225 Difference]: With dead ends: 29066 [2022-02-15 13:02:53,395 INFO L226 Difference]: Without dead ends: 29054 [2022-02-15 13:02:53,395 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1618 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1414, Invalid=2876, Unknown=0, NotChecked=0, Total=4290 [2022-02-15 13:02:53,395 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 254 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 481 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 13:02:53,395 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [254 Valid, 264 Invalid, 522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 481 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 13:02:53,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29054 states. [2022-02-15 13:02:53,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29054 to 24272. [2022-02-15 13:02:53,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24272 states, 24271 states have (on average 2.411890733797536) internal successors, (58539), 24271 states have internal predecessors, (58539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:02:53,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24272 states to 24272 states and 58539 transitions. [2022-02-15 13:02:53,822 INFO L78 Accepts]: Start accepts. Automaton has 24272 states and 58539 transitions. Word has length 33 [2022-02-15 13:02:53,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:02:53,822 INFO L470 AbstractCegarLoop]: Abstraction has 24272 states and 58539 transitions. [2022-02-15 13:02:53,822 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.25) internal successors, (52), 16 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) [2022-02-15 13:02:53,823 INFO L276 IsEmpty]: Start isEmpty. Operand 24272 states and 58539 transitions. [2022-02-15 13:02:53,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-15 13:02:53,844 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:02:53,844 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:02:53,860 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Ended with exit code 0 [2022-02-15 13:02:54,045 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,83 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:02:54,045 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:02:54,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:02:54,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1837566094, now seen corresponding path program 79 times [2022-02-15 13:02:54,045 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:02:54,045 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274632240] [2022-02-15 13:02:54,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:02:54,045 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:02:54,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:02:54,105 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 12 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:54,106 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:02:54,106 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274632240] [2022-02-15 13:02:54,106 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274632240] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:02:54,106 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2046103845] [2022-02-15 13:02:54,106 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-15 13:02:54,107 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:02:54,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:02:54,108 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) [2022-02-15 13:02:54,109 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2022-02-15 13:02:54,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:02:54,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-15 13:02:54,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:02:54,225 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 12 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:54,225 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:02:54,278 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 12 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:54,278 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2046103845] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:02:54,278 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:02:54,278 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 15 [2022-02-15 13:02:54,278 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323166607] [2022-02-15 13:02:54,278 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:02:54,278 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-15 13:02:54,278 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:02:54,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-15 13:02:54,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2022-02-15 13:02:54,279 INFO L87 Difference]: Start difference. First operand 24272 states and 58539 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) [2022-02-15 13:02:54,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:02:54,529 INFO L93 Difference]: Finished difference Result 27352 states and 65734 transitions. [2022-02-15 13:02:54,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-15 13:02:54,529 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 [2022-02-15 13:02:54,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:02:54,573 INFO L225 Difference]: With dead ends: 27352 [2022-02-15 13:02:54,573 INFO L226 Difference]: Without dead ends: 27352 [2022-02-15 13:02:54,573 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 60 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=185, Invalid=415, Unknown=0, NotChecked=0, Total=600 [2022-02-15 13:02:54,573 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 92 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:02:54,573 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 221 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 13:02:54,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27352 states. [2022-02-15 13:02:54,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27352 to 24467. [2022-02-15 13:02:54,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24467 states, 24466 states have (on average 2.412245565274258) internal successors, (59018), 24466 states have internal predecessors, (59018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:02:54,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24467 states to 24467 states and 59018 transitions. [2022-02-15 13:02:54,950 INFO L78 Accepts]: Start accepts. Automaton has 24467 states and 59018 transitions. Word has length 33 [2022-02-15 13:02:54,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:02:54,950 INFO L470 AbstractCegarLoop]: Abstraction has 24467 states and 59018 transitions. [2022-02-15 13:02:54,950 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) [2022-02-15 13:02:54,950 INFO L276 IsEmpty]: Start isEmpty. Operand 24467 states and 59018 transitions. [2022-02-15 13:02:54,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-15 13:02:54,971 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:02:54,972 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:02:54,987 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Ended with exit code 0 [2022-02-15 13:02:55,172 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,84 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:02:55,172 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:02:55,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:02:55,172 INFO L85 PathProgramCache]: Analyzing trace with hash -1546067598, now seen corresponding path program 80 times [2022-02-15 13:02:55,172 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:02:55,173 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866279411] [2022-02-15 13:02:55,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:02:55,173 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:02:55,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:02:55,226 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 22 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:55,226 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:02:55,226 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866279411] [2022-02-15 13:02:55,226 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866279411] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:02:55,226 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1688833907] [2022-02-15 13:02:55,226 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-15 13:02:55,226 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:02:55,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:02:55,228 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) [2022-02-15 13:02:55,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2022-02-15 13:02:55,249 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-15 13:02:55,249 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 13:02:55,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-15 13:02:55,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:02:55,341 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 22 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:55,341 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:02:55,390 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 22 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:55,391 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1688833907] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:02:55,391 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:02:55,391 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 15 [2022-02-15 13:02:55,391 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067161071] [2022-02-15 13:02:55,391 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:02:55,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-15 13:02:55,391 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:02:55,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-15 13:02:55,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2022-02-15 13:02:55,392 INFO L87 Difference]: Start difference. First operand 24467 states and 59018 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) [2022-02-15 13:02:55,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:02:55,596 INFO L93 Difference]: Finished difference Result 29499 states and 70438 transitions. [2022-02-15 13:02:55,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-15 13:02:55,596 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 [2022-02-15 13:02:55,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:02:55,645 INFO L225 Difference]: With dead ends: 29499 [2022-02-15 13:02:55,645 INFO L226 Difference]: Without dead ends: 29477 [2022-02-15 13:02:55,645 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=161, Invalid=439, Unknown=0, NotChecked=0, Total=600 [2022-02-15 13:02:55,645 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 154 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:02:55,645 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [154 Valid, 140 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 13:02:55,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29477 states. [2022-02-15 13:02:55,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29477 to 24467. [2022-02-15 13:02:56,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24467 states, 24466 states have (on average 2.4122046922259464) internal successors, (59017), 24466 states have internal predecessors, (59017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:02:56,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24467 states to 24467 states and 59017 transitions. [2022-02-15 13:02:56,216 INFO L78 Accepts]: Start accepts. Automaton has 24467 states and 59017 transitions. Word has length 33 [2022-02-15 13:02:56,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:02:56,216 INFO L470 AbstractCegarLoop]: Abstraction has 24467 states and 59017 transitions. [2022-02-15 13:02:56,216 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) [2022-02-15 13:02:56,216 INFO L276 IsEmpty]: Start isEmpty. Operand 24467 states and 59017 transitions. [2022-02-15 13:02:56,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-15 13:02:56,234 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:02:56,234 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:02:56,250 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Ended with exit code 0 [2022-02-15 13:02:56,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,85 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:02:56,434 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:02:56,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:02:56,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1247459948, now seen corresponding path program 81 times [2022-02-15 13:02:56,435 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:02:56,435 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487988541] [2022-02-15 13:02:56,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:02:56,435 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:02:56,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:02:56,493 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 9 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:56,493 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:02:56,493 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487988541] [2022-02-15 13:02:56,493 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487988541] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:02:56,493 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1666151884] [2022-02-15 13:02:56,493 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-15 13:02:56,493 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:02:56,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:02:56,495 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) [2022-02-15 13:02:56,495 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2022-02-15 13:02:56,515 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-02-15 13:02:56,515 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 13:02:56,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-15 13:02:56,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:02:56,619 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 12 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:56,620 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:02:56,670 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 9 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:56,670 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1666151884] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:02:56,670 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:02:56,670 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 16 [2022-02-15 13:02:56,670 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047031239] [2022-02-15 13:02:56,670 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:02:56,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-15 13:02:56,671 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:02:56,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-15 13:02:56,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2022-02-15 13:02:56,671 INFO L87 Difference]: Start difference. First operand 24467 states and 59017 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) [2022-02-15 13:02:56,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:02:56,963 INFO L93 Difference]: Finished difference Result 26726 states and 63944 transitions. [2022-02-15 13:02:56,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-02-15 13:02:56,963 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 [2022-02-15 13:02:56,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:02:57,006 INFO L225 Difference]: With dead ends: 26726 [2022-02-15 13:02:57,006 INFO L226 Difference]: Without dead ends: 26726 [2022-02-15 13:02:57,006 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=280, Invalid=590, Unknown=0, NotChecked=0, Total=870 [2022-02-15 13:02:57,006 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 122 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:02:57,006 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 203 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 13:02:57,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26726 states. [2022-02-15 13:02:57,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26726 to 24638. [2022-02-15 13:02:57,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24638 states, 24637 states have (on average 2.4116572634655196) internal successors, (59416), 24637 states have internal predecessors, (59416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:02:57,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24638 states to 24638 states and 59416 transitions. [2022-02-15 13:02:57,404 INFO L78 Accepts]: Start accepts. Automaton has 24638 states and 59416 transitions. Word has length 33 [2022-02-15 13:02:57,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:02:57,405 INFO L470 AbstractCegarLoop]: Abstraction has 24638 states and 59416 transitions. [2022-02-15 13:02:57,405 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) [2022-02-15 13:02:57,405 INFO L276 IsEmpty]: Start isEmpty. Operand 24638 states and 59416 transitions. [2022-02-15 13:02:57,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-15 13:02:57,425 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:02:57,425 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:02:57,441 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Ended with exit code 0 [2022-02-15 13:02:57,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,86 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:02:57,626 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:02:57,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:02:57,626 INFO L85 PathProgramCache]: Analyzing trace with hash 501723950, now seen corresponding path program 82 times [2022-02-15 13:02:57,626 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:02:57,626 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674339008] [2022-02-15 13:02:57,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:02:57,626 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:02:57,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:02:57,676 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 22 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:57,677 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:02:57,677 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674339008] [2022-02-15 13:02:57,677 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674339008] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:02:57,677 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [473638641] [2022-02-15 13:02:57,677 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-15 13:02:57,677 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:02:57,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:02:57,678 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) [2022-02-15 13:02:57,679 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Waiting until timeout for monitored process [2022-02-15 13:02:57,696 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-15 13:02:57,696 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 13:02:57,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-15 13:02:57,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:02:57,800 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 22 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:57,800 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:02:57,849 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 22 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:57,849 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [473638641] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:02:57,849 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:02:57,849 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 16 [2022-02-15 13:02:57,849 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734153656] [2022-02-15 13:02:57,849 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:02:57,850 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-15 13:02:57,850 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:02:57,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-15 13:02:57,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2022-02-15 13:02:57,850 INFO L87 Difference]: Start difference. First operand 24638 states and 59416 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) [2022-02-15 13:02:58,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:02:58,203 INFO L93 Difference]: Finished difference Result 29922 states and 71247 transitions. [2022-02-15 13:02:58,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-02-15 13:02:58,203 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 [2022-02-15 13:02:58,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:02:58,253 INFO L225 Difference]: With dead ends: 29922 [2022-02-15 13:02:58,253 INFO L226 Difference]: Without dead ends: 29902 [2022-02-15 13:02:58,253 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 359 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=373, Invalid=1109, Unknown=0, NotChecked=0, Total=1482 [2022-02-15 13:02:58,253 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 251 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:02:58,254 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [251 Valid, 134 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 13:02:58,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29902 states. [2022-02-15 13:02:58,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29902 to 25555. [2022-02-15 13:02:58,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25555 states, 25554 states have (on average 2.415668779838773) internal successors, (61730), 25554 states have internal predecessors, (61730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:02:58,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25555 states to 25555 states and 61730 transitions. [2022-02-15 13:02:58,733 INFO L78 Accepts]: Start accepts. Automaton has 25555 states and 61730 transitions. Word has length 33 [2022-02-15 13:02:58,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:02:58,733 INFO L470 AbstractCegarLoop]: Abstraction has 25555 states and 61730 transitions. [2022-02-15 13:02:58,733 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) [2022-02-15 13:02:58,733 INFO L276 IsEmpty]: Start isEmpty. Operand 25555 states and 61730 transitions. [2022-02-15 13:02:58,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-15 13:02:58,756 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:02:58,756 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:02:58,771 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Forceful destruction successful, exit code 0 [2022-02-15 13:02:58,956 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,87 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:02:58,956 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:02:58,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:02:58,956 INFO L85 PathProgramCache]: Analyzing trace with hash -517605580, now seen corresponding path program 83 times [2022-02-15 13:02:58,956 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:02:58,957 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428518965] [2022-02-15 13:02:58,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:02:58,957 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:02:58,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:02:59,010 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 9 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:59,010 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:02:59,010 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428518965] [2022-02-15 13:02:59,010 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428518965] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:02:59,010 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [338443389] [2022-02-15 13:02:59,010 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-15 13:02:59,011 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:02:59,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:02:59,012 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) [2022-02-15 13:02:59,019 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Waiting until timeout for monitored process [2022-02-15 13:02:59,037 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-02-15 13:02:59,037 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 13:02:59,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-15 13:02:59,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:02:59,141 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 12 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:59,141 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:02:59,192 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 9 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:02:59,192 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [338443389] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:02:59,192 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:02:59,192 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 16 [2022-02-15 13:02:59,192 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544873469] [2022-02-15 13:02:59,192 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:02:59,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-15 13:02:59,193 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:02:59,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-15 13:02:59,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2022-02-15 13:02:59,193 INFO L87 Difference]: Start difference. First operand 25555 states and 61730 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) [2022-02-15 13:02:59,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:02:59,802 INFO L93 Difference]: Finished difference Result 28456 states and 68010 transitions. [2022-02-15 13:02:59,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-02-15 13:02:59,802 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 [2022-02-15 13:02:59,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:02:59,853 INFO L225 Difference]: With dead ends: 28456 [2022-02-15 13:02:59,853 INFO L226 Difference]: Without dead ends: 28456 [2022-02-15 13:02:59,854 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 576 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=814, Invalid=1838, Unknown=0, NotChecked=0, Total=2652 [2022-02-15 13:02:59,854 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 123 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 515 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 13:02:59,854 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 303 Invalid, 548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 515 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 13:02:59,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28456 states. [2022-02-15 13:03:00,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28456 to 26023. [2022-02-15 13:03:00,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26023 states, 26022 states have (on average 2.4139189916224733) internal successors, (62815), 26022 states have internal predecessors, (62815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:03:00,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26023 states to 26023 states and 62815 transitions. [2022-02-15 13:03:00,438 INFO L78 Accepts]: Start accepts. Automaton has 26023 states and 62815 transitions. Word has length 33 [2022-02-15 13:03:00,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:03:00,439 INFO L470 AbstractCegarLoop]: Abstraction has 26023 states and 62815 transitions. [2022-02-15 13:03:00,439 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) [2022-02-15 13:03:00,439 INFO L276 IsEmpty]: Start isEmpty. Operand 26023 states and 62815 transitions. [2022-02-15 13:03:00,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-15 13:03:00,461 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:03:00,461 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:03:00,477 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Ended with exit code 0 [2022-02-15 13:03:00,662 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95,88 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:03:00,662 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:03:00,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:03:00,662 INFO L85 PathProgramCache]: Analyzing trace with hash -1681947214, now seen corresponding path program 84 times [2022-02-15 13:03:00,662 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:03:00,662 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71434299] [2022-02-15 13:03:00,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:03:00,663 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:03:00,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:03:00,717 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 15 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:03:00,718 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:03:00,718 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71434299] [2022-02-15 13:03:00,718 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71434299] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:03:00,718 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1552560925] [2022-02-15 13:03:00,718 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-15 13:03:00,718 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:03:00,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:03:00,719 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) [2022-02-15 13:03:00,739 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Waiting until timeout for monitored process [2022-02-15 13:03:00,743 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-15 13:03:00,744 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 13:03:00,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-15 13:03:00,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:03:00,849 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 15 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:03:00,849 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:03:00,898 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 15 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:03:00,898 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1552560925] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:03:00,898 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:03:00,898 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 16 [2022-02-15 13:03:00,898 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513693192] [2022-02-15 13:03:00,898 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:03:00,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-15 13:03:00,899 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:03:00,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-15 13:03:00,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2022-02-15 13:03:00,899 INFO L87 Difference]: Start difference. First operand 26023 states and 62815 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) [2022-02-15 13:03:01,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:03:01,359 INFO L93 Difference]: Finished difference Result 35447 states and 84761 transitions. [2022-02-15 13:03:01,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-02-15 13:03:01,359 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 [2022-02-15 13:03:01,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:03:01,418 INFO L225 Difference]: With dead ends: 35447 [2022-02-15 13:03:01,419 INFO L226 Difference]: Without dead ends: 35419 [2022-02-15 13:03:01,419 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 575 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=497, Invalid=1573, Unknown=0, NotChecked=0, Total=2070 [2022-02-15 13:03:01,419 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 350 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:03:01,419 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [350 Valid, 168 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 13:03:01,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35419 states. [2022-02-15 13:03:01,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35419 to 29307. [2022-02-15 13:03:01,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29307 states, 29306 states have (on average 2.4098136900293454) internal successors, (70622), 29306 states have internal predecessors, (70622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:03:01,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29307 states to 29307 states and 70622 transitions. [2022-02-15 13:03:01,974 INFO L78 Accepts]: Start accepts. Automaton has 29307 states and 70622 transitions. Word has length 33 [2022-02-15 13:03:01,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:03:01,974 INFO L470 AbstractCegarLoop]: Abstraction has 29307 states and 70622 transitions. [2022-02-15 13:03:01,974 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) [2022-02-15 13:03:01,974 INFO L276 IsEmpty]: Start isEmpty. Operand 29307 states and 70622 transitions. [2022-02-15 13:03:01,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-15 13:03:01,999 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:03:01,999 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:03:02,015 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Ended with exit code 0 [2022-02-15 13:03:02,200 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 89 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable96 [2022-02-15 13:03:02,200 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:03:02,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:03:02,200 INFO L85 PathProgramCache]: Analyzing trace with hash -1257689236, now seen corresponding path program 85 times [2022-02-15 13:03:02,200 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:03:02,200 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730620462] [2022-02-15 13:03:02,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:03:02,200 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:03:02,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:03:02,252 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 9 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:03:02,252 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:03:02,252 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730620462] [2022-02-15 13:03:02,252 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730620462] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:03:02,252 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1323899271] [2022-02-15 13:03:02,252 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-15 13:03:02,252 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:03:02,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:03:02,254 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) [2022-02-15 13:03:02,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Waiting until timeout for monitored process [2022-02-15 13:03:02,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:03:02,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-15 13:03:02,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:03:02,385 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 12 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:03:02,385 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:03:02,436 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 9 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:03:02,437 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1323899271] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:03:02,437 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:03:02,437 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 16 [2022-02-15 13:03:02,437 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625770670] [2022-02-15 13:03:02,437 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:03:02,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-15 13:03:02,437 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:03:02,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-15 13:03:02,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2022-02-15 13:03:02,437 INFO L87 Difference]: Start difference. First operand 29307 states and 70622 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) [2022-02-15 13:03:03,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:03:03,151 INFO L93 Difference]: Finished difference Result 33697 states and 80300 transitions. [2022-02-15 13:03:03,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-02-15 13:03:03,151 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 [2022-02-15 13:03:03,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:03:03,207 INFO L225 Difference]: With dead ends: 33697 [2022-02-15 13:03:03,207 INFO L226 Difference]: Without dead ends: 33697 [2022-02-15 13:03:03,208 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 779 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=1028, Invalid=2278, Unknown=0, NotChecked=0, Total=3306 [2022-02-15 13:03:03,208 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 134 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 595 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 362 SdHoareTripleChecker+Invalid, 627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 13:03:03,208 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [134 Valid, 362 Invalid, 627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 595 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 13:03:03,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33697 states. [2022-02-15 13:03:03,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33697 to 30105. [2022-02-15 13:03:03,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30105 states, 30104 states have (on average 2.4114403401541322) internal successors, (72594), 30104 states have internal predecessors, (72594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:03:03,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30105 states to 30105 states and 72594 transitions. [2022-02-15 13:03:03,906 INFO L78 Accepts]: Start accepts. Automaton has 30105 states and 72594 transitions. Word has length 33 [2022-02-15 13:03:03,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:03:03,906 INFO L470 AbstractCegarLoop]: Abstraction has 30105 states and 72594 transitions. [2022-02-15 13:03:03,906 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) [2022-02-15 13:03:03,906 INFO L276 IsEmpty]: Start isEmpty. Operand 30105 states and 72594 transitions. [2022-02-15 13:03:03,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-15 13:03:03,928 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:03:03,928 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:03:03,944 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Ended with exit code 0 [2022-02-15 13:03:04,129 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,SelfDestructingSolverStorable97 [2022-02-15 13:03:04,129 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:03:04,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:03:04,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1863818834, now seen corresponding path program 86 times [2022-02-15 13:03:04,129 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:03:04,129 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018443170] [2022-02-15 13:03:04,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:03:04,130 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:03:04,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:03:04,184 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 14 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:03:04,184 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:03:04,184 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018443170] [2022-02-15 13:03:04,184 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018443170] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:03:04,184 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [931126336] [2022-02-15 13:03:04,184 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-15 13:03:04,184 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:03:04,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:03:04,185 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) [2022-02-15 13:03:04,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Waiting until timeout for monitored process [2022-02-15 13:03:04,208 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-15 13:03:04,208 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 13:03:04,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-15 13:03:04,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:03:04,338 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 14 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:03:04,339 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:03:04,398 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 14 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:03:04,398 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [931126336] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:03:04,398 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:03:04,398 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 16 [2022-02-15 13:03:04,399 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966102295] [2022-02-15 13:03:04,399 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:03:04,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-15 13:03:04,399 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:03:04,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-15 13:03:04,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2022-02-15 13:03:04,399 INFO L87 Difference]: Start difference. First operand 30105 states and 72594 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) [2022-02-15 13:03:04,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:03:04,938 INFO L93 Difference]: Finished difference Result 37149 states and 89163 transitions. [2022-02-15 13:03:04,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-02-15 13:03:04,939 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 [2022-02-15 13:03:04,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:03:05,004 INFO L225 Difference]: With dead ends: 37149 [2022-02-15 13:03:05,004 INFO L226 Difference]: Without dead ends: 37125 [2022-02-15 13:03:05,004 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 610 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=524, Invalid=1638, Unknown=0, NotChecked=0, Total=2162 [2022-02-15 13:03:05,005 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 283 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 440 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 13:03:05,005 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [283 Valid, 287 Invalid, 531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 440 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 13:03:05,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37125 states. [2022-02-15 13:03:05,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37125 to 31549. [2022-02-15 13:03:05,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31549 states, 31548 states have (on average 2.4157157347533915) internal successors, (76211), 31548 states have internal predecessors, (76211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:03:05,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31549 states to 31549 states and 76211 transitions. [2022-02-15 13:03:05,814 INFO L78 Accepts]: Start accepts. Automaton has 31549 states and 76211 transitions. Word has length 33 [2022-02-15 13:03:05,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:03:05,815 INFO L470 AbstractCegarLoop]: Abstraction has 31549 states and 76211 transitions. [2022-02-15 13:03:05,815 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) [2022-02-15 13:03:05,815 INFO L276 IsEmpty]: Start isEmpty. Operand 31549 states and 76211 transitions. [2022-02-15 13:03:05,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-15 13:03:05,845 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:03:05,845 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:03:05,861 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Ended with exit code 0 [2022-02-15 13:03:06,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 91 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable98 [2022-02-15 13:03:06,046 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:03:06,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:03:06,046 INFO L85 PathProgramCache]: Analyzing trace with hash 554934836, now seen corresponding path program 87 times [2022-02-15 13:03:06,046 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:03:06,046 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086662017] [2022-02-15 13:03:06,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:03:06,046 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:03:06,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:03:06,095 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 9 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:03:06,095 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:03:06,095 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086662017] [2022-02-15 13:03:06,095 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086662017] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:03:06,095 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [162128465] [2022-02-15 13:03:06,095 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-15 13:03:06,095 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:03:06,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:03:06,096 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) [2022-02-15 13:03:06,097 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Waiting until timeout for monitored process [2022-02-15 13:03:06,117 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-02-15 13:03:06,117 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 13:03:06,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-15 13:03:06,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:03:06,228 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 12 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:03:06,229 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:03:06,279 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 9 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:03:06,279 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [162128465] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:03:06,279 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:03:06,279 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 16 [2022-02-15 13:03:06,279 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080886399] [2022-02-15 13:03:06,279 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:03:06,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-15 13:03:06,279 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:03:06,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-15 13:03:06,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2022-02-15 13:03:06,279 INFO L87 Difference]: Start difference. First operand 31549 states and 76211 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) [2022-02-15 13:03:06,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:03:06,977 INFO L93 Difference]: Finished difference Result 35699 states and 85430 transitions. [2022-02-15 13:03:06,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-02-15 13:03:06,977 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 [2022-02-15 13:03:06,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:03:07,039 INFO L225 Difference]: With dead ends: 35699 [2022-02-15 13:03:07,040 INFO L226 Difference]: Without dead ends: 35699 [2022-02-15 13:03:07,040 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 869 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=1199, Invalid=2341, Unknown=0, NotChecked=0, Total=3540 [2022-02-15 13:03:07,040 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 195 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 13:03:07,040 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [195 Valid, 288 Invalid, 523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 490 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 13:03:07,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35699 states. [2022-02-15 13:03:07,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35699 to 32809. [2022-02-15 13:03:07,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32809 states, 32808 states have (on average 2.4214216044867105) internal successors, (79442), 32808 states have internal predecessors, (79442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:03:07,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32809 states to 32809 states and 79442 transitions. [2022-02-15 13:03:07,916 INFO L78 Accepts]: Start accepts. Automaton has 32809 states and 79442 transitions. Word has length 33 [2022-02-15 13:03:07,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:03:07,916 INFO L470 AbstractCegarLoop]: Abstraction has 32809 states and 79442 transitions. [2022-02-15 13:03:07,916 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) [2022-02-15 13:03:07,916 INFO L276 IsEmpty]: Start isEmpty. Operand 32809 states and 79442 transitions. [2022-02-15 13:03:07,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-15 13:03:07,943 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:03:07,943 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:03:07,959 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Ended with exit code 0 [2022-02-15 13:03:08,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99,92 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:03:08,144 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:03:08,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:03:08,144 INFO L85 PathProgramCache]: Analyzing trace with hash -140417230, now seen corresponding path program 88 times [2022-02-15 13:03:08,144 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:03:08,144 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584703425] [2022-02-15 13:03:08,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:03:08,144 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:03:08,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:03:08,188 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 19 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:03:08,189 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:03:08,189 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584703425] [2022-02-15 13:03:08,189 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584703425] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:03:08,189 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1783369247] [2022-02-15 13:03:08,189 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-15 13:03:08,189 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:03:08,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:03:08,190 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) [2022-02-15 13:03:08,190 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Waiting until timeout for monitored process [2022-02-15 13:03:08,211 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-15 13:03:08,212 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 13:03:08,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-15 13:03:08,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:03:08,335 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 19 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:03:08,335 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:03:08,385 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 19 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:03:08,385 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1783369247] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:03:08,385 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:03:08,385 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 16 [2022-02-15 13:03:08,385 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816560699] [2022-02-15 13:03:08,385 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:03:08,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-15 13:03:08,385 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:03:08,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-15 13:03:08,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2022-02-15 13:03:08,386 INFO L87 Difference]: Start difference. First operand 32809 states and 79442 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) [2022-02-15 13:03:09,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:03:09,045 INFO L93 Difference]: Finished difference Result 39072 states and 93960 transitions. [2022-02-15 13:03:09,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-02-15 13:03:09,046 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 [2022-02-15 13:03:09,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:03:09,122 INFO L225 Difference]: With dead ends: 39072 [2022-02-15 13:03:09,122 INFO L226 Difference]: Without dead ends: 39066 [2022-02-15 13:03:09,122 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 631 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=571, Invalid=1685, Unknown=0, NotChecked=0, Total=2256 [2022-02-15 13:03:09,123 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 305 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 391 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 13:03:09,123 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [305 Valid, 253 Invalid, 462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 391 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 13:03:09,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39066 states. [2022-02-15 13:03:09,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39066 to 33965. [2022-02-15 13:03:09,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33965 states, 33964 states have (on average 2.4235366859027203) internal successors, (82313), 33964 states have internal predecessors, (82313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:03:09,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33965 states to 33965 states and 82313 transitions. [2022-02-15 13:03:09,930 INFO L78 Accepts]: Start accepts. Automaton has 33965 states and 82313 transitions. Word has length 33 [2022-02-15 13:03:09,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:03:09,930 INFO L470 AbstractCegarLoop]: Abstraction has 33965 states and 82313 transitions. [2022-02-15 13:03:09,930 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) [2022-02-15 13:03:09,930 INFO L276 IsEmpty]: Start isEmpty. Operand 33965 states and 82313 transitions. [2022-02-15 13:03:09,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-15 13:03:09,956 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:03:09,956 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:03:09,972 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Ended with exit code 0 [2022-02-15 13:03:10,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100,93 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:03:10,156 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:03:10,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:03:10,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1558460462, now seen corresponding path program 89 times [2022-02-15 13:03:10,157 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:03:10,157 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46713496] [2022-02-15 13:03:10,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:03:10,157 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:03:10,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:03:10,200 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 22 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:03:10,201 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:03:10,201 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46713496] [2022-02-15 13:03:10,201 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46713496] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:03:10,201 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2141536576] [2022-02-15 13:03:10,201 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-15 13:03:10,201 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:03:10,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:03:10,202 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) [2022-02-15 13:03:10,202 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Waiting until timeout for monitored process [2022-02-15 13:03:10,222 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-02-15 13:03:10,222 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 13:03:10,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-15 13:03:10,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:03:10,323 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 22 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:03:10,323 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:03:10,372 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 22 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:03:10,372 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2141536576] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:03:10,372 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:03:10,372 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 16 [2022-02-15 13:03:10,372 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840502083] [2022-02-15 13:03:10,372 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:03:10,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-15 13:03:10,372 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:03:10,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-15 13:03:10,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2022-02-15 13:03:10,373 INFO L87 Difference]: Start difference. First operand 33965 states and 82313 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) [2022-02-15 13:03:11,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:03:11,318 INFO L93 Difference]: Finished difference Result 38739 states and 92205 transitions. [2022-02-15 13:03:11,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-02-15 13:03:11,328 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 [2022-02-15 13:03:11,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:03:11,404 INFO L225 Difference]: With dead ends: 38739 [2022-02-15 13:03:11,404 INFO L226 Difference]: Without dead ends: 38724 [2022-02-15 13:03:11,404 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1798 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1351, Invalid=3341, Unknown=0, NotChecked=0, Total=4692 [2022-02-15 13:03:11,405 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 317 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 13:03:11,405 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [317 Valid, 299 Invalid, 533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 460 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 13:03:11,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38724 states. [2022-02-15 13:03:11,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38724 to 31951. [2022-02-15 13:03:12,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31951 states, 31950 states have (on average 2.4071048513302036) internal successors, (76907), 31950 states have internal predecessors, (76907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:03:12,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31951 states to 31951 states and 76907 transitions. [2022-02-15 13:03:12,197 INFO L78 Accepts]: Start accepts. Automaton has 31951 states and 76907 transitions. Word has length 33 [2022-02-15 13:03:12,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:03:12,197 INFO L470 AbstractCegarLoop]: Abstraction has 31951 states and 76907 transitions. [2022-02-15 13:03:12,198 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) [2022-02-15 13:03:12,198 INFO L276 IsEmpty]: Start isEmpty. Operand 31951 states and 76907 transitions. [2022-02-15 13:03:12,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-15 13:03:12,219 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:03:12,219 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:03:12,235 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Forceful destruction successful, exit code 0 [2022-02-15 13:03:12,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 94 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable101 [2022-02-15 13:03:12,419 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:03:12,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:03:12,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1910187214, now seen corresponding path program 90 times [2022-02-15 13:03:12,420 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:03:12,420 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698797937] [2022-02-15 13:03:12,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:03:12,420 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:03:12,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:03:12,464 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 19 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:03:12,464 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:03:12,464 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698797937] [2022-02-15 13:03:12,464 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698797937] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:03:12,464 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2111821933] [2022-02-15 13:03:12,465 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-15 13:03:12,465 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:03:12,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:03:12,466 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) [2022-02-15 13:03:12,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Waiting until timeout for monitored process [2022-02-15 13:03:12,485 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-02-15 13:03:12,486 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 13:03:12,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-15 13:03:12,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:03:12,588 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 22 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:03:12,588 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:03:12,637 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 19 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:03:12,637 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2111821933] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:03:12,637 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:03:12,638 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 16 [2022-02-15 13:03:12,638 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578627315] [2022-02-15 13:03:12,638 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:03:12,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-15 13:03:12,638 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:03:12,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-15 13:03:12,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2022-02-15 13:03:12,638 INFO L87 Difference]: Start difference. First operand 31951 states and 76907 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) [2022-02-15 13:03:13,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:03:13,247 INFO L93 Difference]: Finished difference Result 33646 states and 80405 transitions. [2022-02-15 13:03:13,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-02-15 13:03:13,248 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 [2022-02-15 13:03:13,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:03:13,307 INFO L225 Difference]: With dead ends: 33646 [2022-02-15 13:03:13,307 INFO L226 Difference]: Without dead ends: 33640 [2022-02-15 13:03:13,307 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 475 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=781, Invalid=1475, Unknown=0, NotChecked=0, Total=2256 [2022-02-15 13:03:13,308 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 155 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 13:03:13,308 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [155 Valid, 294 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 13:03:13,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33640 states. [2022-02-15 13:03:13,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33640 to 28584. [2022-02-15 13:03:13,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28584 states, 28583 states have (on average 2.402581954308505) internal successors, (68673), 28583 states have internal predecessors, (68673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:03:14,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28584 states to 28584 states and 68673 transitions. [2022-02-15 13:03:14,055 INFO L78 Accepts]: Start accepts. Automaton has 28584 states and 68673 transitions. Word has length 33 [2022-02-15 13:03:14,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:03:14,055 INFO L470 AbstractCegarLoop]: Abstraction has 28584 states and 68673 transitions. [2022-02-15 13:03:14,055 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) [2022-02-15 13:03:14,055 INFO L276 IsEmpty]: Start isEmpty. Operand 28584 states and 68673 transitions. [2022-02-15 13:03:14,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-15 13:03:14,075 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:03:14,075 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:03:14,091 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Forceful destruction successful, exit code 0 [2022-02-15 13:03:14,275 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,SelfDestructingSolverStorable102 [2022-02-15 13:03:14,276 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:03:14,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:03:14,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1867635086, now seen corresponding path program 91 times [2022-02-15 13:03:14,276 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:03:14,276 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723107907] [2022-02-15 13:03:14,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:03:14,276 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:03:14,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:03:14,343 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 7 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:03:14,343 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:03:14,343 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723107907] [2022-02-15 13:03:14,343 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723107907] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:03:14,343 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1261194118] [2022-02-15 13:03:14,343 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-15 13:03:14,344 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:03:14,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:03:14,345 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) [2022-02-15 13:03:14,346 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Waiting until timeout for monitored process [2022-02-15 13:03:14,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:03:14,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-15 13:03:14,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:03:14,489 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 12 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:03:14,489 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:03:14,539 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 7 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:03:14,540 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1261194118] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:03:14,540 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:03:14,540 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2022-02-15 13:03:14,540 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689146373] [2022-02-15 13:03:14,540 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:03:14,540 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-15 13:03:14,540 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:03:14,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-15 13:03:14,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2022-02-15 13:03:14,540 INFO L87 Difference]: Start difference. First operand 28584 states and 68673 transitions. Second operand has 17 states, 17 states have (on average 2.9411764705882355) internal successors, (50), 17 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:03:15,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:03:15,092 INFO L93 Difference]: Finished difference Result 31047 states and 73946 transitions. [2022-02-15 13:03:15,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-02-15 13:03:15,093 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.9411764705882355) internal successors, (50), 17 states have internal predecessors, (50), 0 states have call successors, (0), 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 [2022-02-15 13:03:15,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:03:15,147 INFO L225 Difference]: With dead ends: 31047 [2022-02-15 13:03:15,147 INFO L226 Difference]: Without dead ends: 31025 [2022-02-15 13:03:15,148 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 59 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 447 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=631, Invalid=1439, Unknown=0, NotChecked=0, Total=2070 [2022-02-15 13:03:15,148 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 120 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 427 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 13:03:15,148 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [120 Valid, 263 Invalid, 460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 427 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 13:03:15,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31025 states. [2022-02-15 13:03:15,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31025 to 28517. [2022-02-15 13:03:15,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28517 states, 28516 states have (on average 2.402966755505681) internal successors, (68523), 28516 states have internal predecessors, (68523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:03:15,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28517 states to 28517 states and 68523 transitions. [2022-02-15 13:03:15,795 INFO L78 Accepts]: Start accepts. Automaton has 28517 states and 68523 transitions. Word has length 33 [2022-02-15 13:03:15,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:03:15,795 INFO L470 AbstractCegarLoop]: Abstraction has 28517 states and 68523 transitions. [2022-02-15 13:03:15,795 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.9411764705882355) internal successors, (50), 17 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:03:15,795 INFO L276 IsEmpty]: Start isEmpty. Operand 28517 states and 68523 transitions. [2022-02-15 13:03:15,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-15 13:03:15,818 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:03:15,819 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:03:15,834 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Forceful destruction successful, exit code 0 [2022-02-15 13:03:16,019 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,SelfDestructingSolverStorable103 [2022-02-15 13:03:16,019 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:03:16,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:03:16,020 INFO L85 PathProgramCache]: Analyzing trace with hash 366876366, now seen corresponding path program 92 times [2022-02-15 13:03:16,020 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:03:16,020 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119315703] [2022-02-15 13:03:16,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:03:16,020 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:03:16,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:03:16,072 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 7 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:03:16,072 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:03:16,072 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119315703] [2022-02-15 13:03:16,073 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119315703] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:03:16,073 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2113917947] [2022-02-15 13:03:16,073 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-15 13:03:16,073 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:03:16,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:03:16,074 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) [2022-02-15 13:03:16,097 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Waiting until timeout for monitored process [2022-02-15 13:03:16,100 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-15 13:03:16,100 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 13:03:16,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-15 13:03:16,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:03:16,213 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 12 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:03:16,213 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:03:16,263 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 7 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:03:16,264 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2113917947] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:03:16,264 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:03:16,264 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 10] total 16 [2022-02-15 13:03:16,264 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577127781] [2022-02-15 13:03:16,264 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:03:16,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-15 13:03:16,264 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:03:16,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-15 13:03:16,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2022-02-15 13:03:16,265 INFO L87 Difference]: Start difference. First operand 28517 states and 68523 transitions. Second operand has 16 states, 16 states have (on average 3.125) internal successors, (50), 16 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:03:16,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:03:16,824 INFO L93 Difference]: Finished difference Result 31772 states and 75615 transitions. [2022-02-15 13:03:16,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-02-15 13:03:16,825 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.125) internal successors, (50), 16 states have internal predecessors, (50), 0 states have call successors, (0), 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 [2022-02-15 13:03:16,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:03:16,889 INFO L225 Difference]: With dead ends: 31772 [2022-02-15 13:03:16,889 INFO L226 Difference]: Without dead ends: 31762 [2022-02-15 13:03:16,890 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 504 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=682, Invalid=1574, Unknown=0, NotChecked=0, Total=2256 [2022-02-15 13:03:16,890 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 126 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 415 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 13:03:16,890 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 246 Invalid, 447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 415 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 13:03:16,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31762 states. [2022-02-15 13:03:17,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31762 to 28744. [2022-02-15 13:03:17,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28744 states, 28743 states have (on average 2.4025675816720593) internal successors, (69057), 28743 states have internal predecessors, (69057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:03:17,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28744 states to 28744 states and 69057 transitions. [2022-02-15 13:03:17,693 INFO L78 Accepts]: Start accepts. Automaton has 28744 states and 69057 transitions. Word has length 33 [2022-02-15 13:03:17,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:03:17,693 INFO L470 AbstractCegarLoop]: Abstraction has 28744 states and 69057 transitions. [2022-02-15 13:03:17,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.125) internal successors, (50), 16 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:03:17,693 INFO L276 IsEmpty]: Start isEmpty. Operand 28744 states and 69057 transitions. [2022-02-15 13:03:17,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-15 13:03:17,713 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:03:17,713 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:03:17,728 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Ended with exit code 0 [2022-02-15 13:03:17,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104,97 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:03:17,914 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:03:17,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:03:17,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1229135474, now seen corresponding path program 93 times [2022-02-15 13:03:17,914 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:03:17,914 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698367342] [2022-02-15 13:03:17,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:03:17,914 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:03:17,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:03:17,961 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 7 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:03:17,962 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:03:17,962 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698367342] [2022-02-15 13:03:17,962 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698367342] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:03:17,962 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [633672065] [2022-02-15 13:03:17,962 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-15 13:03:17,962 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:03:17,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:03:17,963 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) [2022-02-15 13:03:17,964 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Waiting until timeout for monitored process [2022-02-15 13:03:17,983 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-02-15 13:03:17,983 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 13:03:17,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-15 13:03:17,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:03:18,107 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 12 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:03:18,107 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:03:18,156 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 7 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:03:18,156 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [633672065] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:03:18,156 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:03:18,156 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 10] total 16 [2022-02-15 13:03:18,157 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331229566] [2022-02-15 13:03:18,157 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:03:18,157 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-15 13:03:18,157 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:03:18,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-15 13:03:18,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2022-02-15 13:03:18,157 INFO L87 Difference]: Start difference. First operand 28744 states and 69057 transitions. Second operand has 16 states, 16 states have (on average 3.125) internal successors, (50), 16 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:03:18,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:03:18,837 INFO L93 Difference]: Finished difference Result 34173 states and 81150 transitions. [2022-02-15 13:03:18,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-02-15 13:03:18,838 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.125) internal successors, (50), 16 states have internal predecessors, (50), 0 states have call successors, (0), 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 [2022-02-15 13:03:18,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:03:18,901 INFO L225 Difference]: With dead ends: 34173 [2022-02-15 13:03:18,902 INFO L226 Difference]: Without dead ends: 34169 [2022-02-15 13:03:18,902 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 746 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=983, Invalid=2097, Unknown=0, NotChecked=0, Total=3080 [2022-02-15 13:03:18,902 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 133 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 554 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 13:03:18,902 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [133 Valid, 315 Invalid, 588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 554 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 13:03:18,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34169 states. [2022-02-15 13:03:19,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34169 to 29028. [2022-02-15 13:03:19,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29028 states, 29027 states have (on average 2.401384917490612) internal successors, (69705), 29027 states have internal predecessors, (69705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:03:19,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29028 states to 29028 states and 69705 transitions. [2022-02-15 13:03:19,495 INFO L78 Accepts]: Start accepts. Automaton has 29028 states and 69705 transitions. Word has length 33 [2022-02-15 13:03:19,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:03:19,496 INFO L470 AbstractCegarLoop]: Abstraction has 29028 states and 69705 transitions. [2022-02-15 13:03:19,496 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.125) internal successors, (50), 16 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:03:19,496 INFO L276 IsEmpty]: Start isEmpty. Operand 29028 states and 69705 transitions. [2022-02-15 13:03:19,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-15 13:03:19,617 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:03:19,617 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:03:19,633 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Ended with exit code 0 [2022-02-15 13:03:19,818 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105,98 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:03:19,818 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:03:19,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:03:19,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1435504334, now seen corresponding path program 94 times [2022-02-15 13:03:19,819 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:03:19,819 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029214650] [2022-02-15 13:03:19,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:03:19,819 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:03:19,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:03:19,859 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 7 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:03:19,859 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:03:19,859 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029214650] [2022-02-15 13:03:19,859 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029214650] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:03:19,859 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [942982124] [2022-02-15 13:03:19,859 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-15 13:03:19,859 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:03:19,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:03:19,860 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) [2022-02-15 13:03:19,861 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Waiting until timeout for monitored process [2022-02-15 13:03:19,878 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-15 13:03:19,878 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 13:03:19,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-15 13:03:19,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:03:19,989 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 12 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:03:19,989 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:03:20,038 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 7 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:03:20,038 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [942982124] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:03:20,038 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:03:20,039 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 10] total 16 [2022-02-15 13:03:20,039 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118491935] [2022-02-15 13:03:20,039 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:03:20,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-15 13:03:20,039 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:03:20,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-15 13:03:20,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2022-02-15 13:03:20,039 INFO L87 Difference]: Start difference. First operand 29028 states and 69705 transitions. Second operand has 16 states, 16 states have (on average 3.125) internal successors, (50), 16 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:03:20,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:03:20,784 INFO L93 Difference]: Finished difference Result 34423 states and 81836 transitions. [2022-02-15 13:03:20,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-02-15 13:03:20,784 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.125) internal successors, (50), 16 states have internal predecessors, (50), 0 states have call successors, (0), 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 [2022-02-15 13:03:20,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:03:20,847 INFO L225 Difference]: With dead ends: 34423 [2022-02-15 13:03:20,848 INFO L226 Difference]: Without dead ends: 34423 [2022-02-15 13:03:20,848 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 942 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=1190, Invalid=2350, Unknown=0, NotChecked=0, Total=3540 [2022-02-15 13:03:20,848 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 189 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 607 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 13:03:20,848 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [189 Valid, 331 Invalid, 637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 607 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 13:03:20,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34423 states. [2022-02-15 13:03:21,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34423 to 30566. [2022-02-15 13:03:21,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30566 states, 30565 states have (on average 2.405332897104531) internal successors, (73519), 30565 states have internal predecessors, (73519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:03:21,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30566 states to 30566 states and 73519 transitions. [2022-02-15 13:03:21,555 INFO L78 Accepts]: Start accepts. Automaton has 30566 states and 73519 transitions. Word has length 33 [2022-02-15 13:03:21,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:03:21,555 INFO L470 AbstractCegarLoop]: Abstraction has 30566 states and 73519 transitions. [2022-02-15 13:03:21,555 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.125) internal successors, (50), 16 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:03:21,556 INFO L276 IsEmpty]: Start isEmpty. Operand 30566 states and 73519 transitions. [2022-02-15 13:03:21,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-15 13:03:21,680 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:03:21,680 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:03:21,698 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Ended with exit code 0 [2022-02-15 13:03:21,887 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,SelfDestructingSolverStorable106 [2022-02-15 13:03:21,887 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:03:21,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:03:21,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1504210584, now seen corresponding path program 95 times [2022-02-15 13:03:21,888 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:03:21,888 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569311141] [2022-02-15 13:03:21,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:03:21,888 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:03:21,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:03:21,929 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 17 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-15 13:03:21,929 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:03:21,929 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569311141] [2022-02-15 13:03:21,929 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569311141] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:03:21,929 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1016996870] [2022-02-15 13:03:21,929 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-15 13:03:21,929 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:03:21,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:03:21,930 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) [2022-02-15 13:03:21,931 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Waiting until timeout for monitored process [2022-02-15 13:03:21,949 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-02-15 13:03:21,949 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 13:03:21,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-15 13:03:21,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:03:22,053 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 22 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:03:22,053 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:03:22,105 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 17 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-15 13:03:22,105 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1016996870] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:03:22,106 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:03:22,106 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 10] total 16 [2022-02-15 13:03:22,106 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141345150] [2022-02-15 13:03:22,106 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:03:22,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-15 13:03:22,106 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:03:22,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-15 13:03:22,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2022-02-15 13:03:22,106 INFO L87 Difference]: Start difference. First operand 30566 states and 73519 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) [2022-02-15 13:03:22,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:03:22,679 INFO L93 Difference]: Finished difference Result 33401 states and 79605 transitions. [2022-02-15 13:03:22,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-02-15 13:03:22,679 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 [2022-02-15 13:03:22,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:03:22,735 INFO L225 Difference]: With dead ends: 33401 [2022-02-15 13:03:22,735 INFO L226 Difference]: Without dead ends: 33392 [2022-02-15 13:03:22,736 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 589 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=847, Invalid=1703, Unknown=0, NotChecked=0, Total=2550 [2022-02-15 13:03:22,736 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 210 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 438 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 13:03:22,736 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [210 Valid, 289 Invalid, 460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 438 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 13:03:22,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33392 states. [2022-02-15 13:03:23,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33392 to 26944. [2022-02-15 13:03:23,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26944 states, 26943 states have (on average 2.395427383736035) internal successors, (64540), 26943 states have internal predecessors, (64540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:03:23,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26944 states to 26944 states and 64540 transitions. [2022-02-15 13:03:23,346 INFO L78 Accepts]: Start accepts. Automaton has 26944 states and 64540 transitions. Word has length 33 [2022-02-15 13:03:23,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:03:23,346 INFO L470 AbstractCegarLoop]: Abstraction has 26944 states and 64540 transitions. [2022-02-15 13:03:23,346 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) [2022-02-15 13:03:23,346 INFO L276 IsEmpty]: Start isEmpty. Operand 26944 states and 64540 transitions. [2022-02-15 13:03:23,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-15 13:03:23,367 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:03:23,367 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:03:23,382 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Ended with exit code 0 [2022-02-15 13:03:23,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107,100 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:03:23,567 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:03:23,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:03:23,568 INFO L85 PathProgramCache]: Analyzing trace with hash -2010556850, now seen corresponding path program 96 times [2022-02-15 13:03:23,568 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:03:23,568 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930404882] [2022-02-15 13:03:23,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:03:23,568 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:03:23,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:03:23,621 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 17 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:03:23,622 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:03:23,622 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930404882] [2022-02-15 13:03:23,622 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930404882] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:03:23,622 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [898160455] [2022-02-15 13:03:23,622 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-15 13:03:23,622 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:03:23,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:03:23,623 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) [2022-02-15 13:03:23,649 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Waiting until timeout for monitored process [2022-02-15 13:03:23,652 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-02-15 13:03:23,652 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 13:03:23,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-15 13:03:23,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:03:23,787 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 22 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:03:23,787 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:03:23,847 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 17 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:03:23,847 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [898160455] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:03:23,847 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:03:23,847 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2022-02-15 13:03:23,847 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199793739] [2022-02-15 13:03:23,847 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:03:23,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-15 13:03:23,848 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:03:23,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-15 13:03:23,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2022-02-15 13:03:23,848 INFO L87 Difference]: Start difference. First operand 26944 states and 64540 transitions. Second operand has 17 states, 17 states have (on average 2.7058823529411766) internal successors, (46), 17 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) [2022-02-15 13:03:24,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:03:24,513 INFO L93 Difference]: Finished difference Result 30318 states and 71996 transitions. [2022-02-15 13:03:24,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-02-15 13:03:24,513 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.7058823529411766) internal successors, (46), 17 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 [2022-02-15 13:03:24,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:03:24,566 INFO L225 Difference]: With dead ends: 30318 [2022-02-15 13:03:24,566 INFO L226 Difference]: Without dead ends: 30294 [2022-02-15 13:03:24,566 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 59 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 580 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=776, Invalid=1674, Unknown=0, NotChecked=0, Total=2450 [2022-02-15 13:03:24,566 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 154 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 478 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 13:03:24,566 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [154 Valid, 318 Invalid, 498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 478 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 13:03:24,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30294 states. [2022-02-15 13:03:25,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30294 to 26469. [2022-02-15 13:03:25,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26469 states, 26468 states have (on average 2.400861417560828) internal successors, (63546), 26468 states have internal predecessors, (63546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:03:25,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26469 states to 26469 states and 63546 transitions. [2022-02-15 13:03:25,111 INFO L78 Accepts]: Start accepts. Automaton has 26469 states and 63546 transitions. Word has length 33 [2022-02-15 13:03:25,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:03:25,111 INFO L470 AbstractCegarLoop]: Abstraction has 26469 states and 63546 transitions. [2022-02-15 13:03:25,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.7058823529411766) internal successors, (46), 17 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) [2022-02-15 13:03:25,112 INFO L276 IsEmpty]: Start isEmpty. Operand 26469 states and 63546 transitions. [2022-02-15 13:03:25,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-15 13:03:25,133 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:03:25,133 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:03:25,148 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Ended with exit code 0 [2022-02-15 13:03:25,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108,101 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:03:25,334 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:03:25,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:03:25,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1631811504, now seen corresponding path program 97 times [2022-02-15 13:03:25,335 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:03:25,335 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657027956] [2022-02-15 13:03:25,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:03:25,335 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:03:25,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:03:25,384 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:03:25,384 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:03:25,384 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657027956] [2022-02-15 13:03:25,385 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657027956] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:03:25,385 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1437568620] [2022-02-15 13:03:25,385 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-15 13:03:25,385 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:03:25,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:03:25,386 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) [2022-02-15 13:03:25,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Waiting until timeout for monitored process [2022-02-15 13:03:25,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:03:25,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-15 13:03:25,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:03:25,538 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 12 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:03:25,538 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:03:25,592 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:03:25,592 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1437568620] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:03:25,592 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:03:25,592 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 18 [2022-02-15 13:03:25,592 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41309326] [2022-02-15 13:03:25,592 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:03:25,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:03:25,593 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:03:25,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:03:25,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:03:25,593 INFO L87 Difference]: Start difference. First operand 26469 states and 63546 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) [2022-02-15 13:03:26,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:03:26,269 INFO L93 Difference]: Finished difference Result 28516 states and 67822 transitions. [2022-02-15 13:03:26,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-02-15 13:03:26,269 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 33 [2022-02-15 13:03:26,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:03:26,319 INFO L225 Difference]: With dead ends: 28516 [2022-02-15 13:03:26,319 INFO L226 Difference]: Without dead ends: 28494 [2022-02-15 13:03:26,320 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 542 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=676, Invalid=1676, Unknown=0, NotChecked=0, Total=2352 [2022-02-15 13:03:26,320 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 128 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-15 13:03:26,320 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [128 Valid, 264 Invalid, 485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 449 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-15 13:03:26,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28494 states. [2022-02-15 13:03:26,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28494 to 26253. [2022-02-15 13:03:26,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26253 states, 26252 states have (on average 2.400693280511961) internal successors, (63023), 26252 states have internal predecessors, (63023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:03:26,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26253 states to 26253 states and 63023 transitions. [2022-02-15 13:03:26,828 INFO L78 Accepts]: Start accepts. Automaton has 26253 states and 63023 transitions. Word has length 33 [2022-02-15 13:03:26,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:03:26,828 INFO L470 AbstractCegarLoop]: Abstraction has 26253 states and 63023 transitions. [2022-02-15 13:03:26,829 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) [2022-02-15 13:03:26,829 INFO L276 IsEmpty]: Start isEmpty. Operand 26253 states and 63023 transitions. [2022-02-15 13:03:26,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-15 13:03:26,950 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:03:26,951 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:03:26,966 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Ended with exit code 0 [2022-02-15 13:03:27,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109,102 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:03:27,151 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:03:27,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:03:27,151 INFO L85 PathProgramCache]: Analyzing trace with hash -738026316, now seen corresponding path program 98 times [2022-02-15 13:03:27,152 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:03:27,152 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026098524] [2022-02-15 13:03:27,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:03:27,152 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:03:27,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:03:27,201 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:03:27,201 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:03:27,201 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026098524] [2022-02-15 13:03:27,201 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026098524] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:03:27,201 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [350978231] [2022-02-15 13:03:27,201 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-15 13:03:27,202 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:03:27,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:03:27,203 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) [2022-02-15 13:03:27,222 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Waiting until timeout for monitored process [2022-02-15 13:03:27,230 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-15 13:03:27,230 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 13:03:27,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-15 13:03:27,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:03:27,358 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 12 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:03:27,359 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:03:27,409 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:03:27,410 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [350978231] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:03:27,410 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:03:27,410 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 10] total 17 [2022-02-15 13:03:27,410 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365745173] [2022-02-15 13:03:27,410 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:03:27,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-15 13:03:27,410 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:03:27,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-15 13:03:27,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2022-02-15 13:03:27,411 INFO L87 Difference]: Start difference. First operand 26253 states and 63023 transitions. Second operand has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 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) [2022-02-15 13:03:27,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:03:27,981 INFO L93 Difference]: Finished difference Result 30910 states and 73350 transitions. [2022-02-15 13:03:27,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-02-15 13:03:27,982 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 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 33 [2022-02-15 13:03:27,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:03:28,035 INFO L225 Difference]: With dead ends: 30910 [2022-02-15 13:03:28,036 INFO L226 Difference]: Without dead ends: 30900 [2022-02-15 13:03:28,036 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 59 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 559 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=732, Invalid=1718, Unknown=0, NotChecked=0, Total=2450 [2022-02-15 13:03:28,036 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 138 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 459 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 13:03:28,036 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [138 Valid, 254 Invalid, 496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 459 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 13:03:28,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30900 states. [2022-02-15 13:03:28,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30900 to 26551. [2022-02-15 13:03:28,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26551 states, 26550 states have (on average 2.3992090395480226) internal successors, (63699), 26550 states have internal predecessors, (63699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:03:28,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26551 states to 26551 states and 63699 transitions. [2022-02-15 13:03:28,654 INFO L78 Accepts]: Start accepts. Automaton has 26551 states and 63699 transitions. Word has length 33 [2022-02-15 13:03:28,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:03:28,654 INFO L470 AbstractCegarLoop]: Abstraction has 26551 states and 63699 transitions. [2022-02-15 13:03:28,654 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 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) [2022-02-15 13:03:28,654 INFO L276 IsEmpty]: Start isEmpty. Operand 26551 states and 63699 transitions. [2022-02-15 13:03:28,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-15 13:03:28,675 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:03:28,675 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:03:28,690 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Ended with exit code 0 [2022-02-15 13:03:28,875 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,SelfDestructingSolverStorable110 [2022-02-15 13:03:28,876 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:03:28,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:03:28,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1497970224, now seen corresponding path program 99 times [2022-02-15 13:03:28,876 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:03:28,876 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479048207] [2022-02-15 13:03:28,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:03:28,876 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:03:28,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:03:28,913 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:03:28,914 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:03:28,914 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479048207] [2022-02-15 13:03:28,914 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479048207] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:03:28,914 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [837402677] [2022-02-15 13:03:28,914 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-15 13:03:28,914 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:03:28,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:03:28,915 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) [2022-02-15 13:03:28,916 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Waiting until timeout for monitored process [2022-02-15 13:03:28,934 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-02-15 13:03:28,935 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 13:03:28,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-15 13:03:28,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:03:29,055 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 12 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:03:29,055 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:03:29,104 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:03:29,104 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [837402677] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:03:29,104 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:03:29,104 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 9] total 16 [2022-02-15 13:03:29,105 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232470368] [2022-02-15 13:03:29,105 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:03:29,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-15 13:03:29,105 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:03:29,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-15 13:03:29,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2022-02-15 13:03:29,105 INFO L87 Difference]: Start difference. First operand 26551 states and 63699 transitions. Second operand has 16 states, 16 states have (on average 3.3125) internal successors, (53), 16 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) [2022-02-15 13:03:29,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:03:29,753 INFO L93 Difference]: Finished difference Result 34573 states and 82100 transitions. [2022-02-15 13:03:29,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-02-15 13:03:29,753 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.3125) internal successors, (53), 16 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 33 [2022-02-15 13:03:29,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:03:29,809 INFO L225 Difference]: With dead ends: 34573 [2022-02-15 13:03:29,810 INFO L226 Difference]: Without dead ends: 34571 [2022-02-15 13:03:29,810 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 797 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=975, Invalid=1995, Unknown=0, NotChecked=0, Total=2970 [2022-02-15 13:03:29,810 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 151 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 534 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 13:03:29,810 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [151 Valid, 311 Invalid, 568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 534 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 13:03:29,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34571 states. [2022-02-15 13:03:30,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34571 to 27411. [2022-02-15 13:03:30,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27411 states, 27410 states have (on average 2.39799343305363) internal successors, (65729), 27410 states have internal predecessors, (65729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:03:30,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27411 states to 27411 states and 65729 transitions. [2022-02-15 13:03:30,440 INFO L78 Accepts]: Start accepts. Automaton has 27411 states and 65729 transitions. Word has length 33 [2022-02-15 13:03:30,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:03:30,440 INFO L470 AbstractCegarLoop]: Abstraction has 27411 states and 65729 transitions. [2022-02-15 13:03:30,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.3125) internal successors, (53), 16 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) [2022-02-15 13:03:30,440 INFO L276 IsEmpty]: Start isEmpty. Operand 27411 states and 65729 transitions. [2022-02-15 13:03:30,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-15 13:03:30,464 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:03:30,464 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:03:30,482 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Ended with exit code 0 [2022-02-15 13:03:30,673 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111,104 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:03:30,673 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:03:30,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:03:30,674 INFO L85 PathProgramCache]: Analyzing trace with hash -8819148, now seen corresponding path program 100 times [2022-02-15 13:03:30,674 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:03:30,674 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367499093] [2022-02-15 13:03:30,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:03:30,674 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:03:30,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:03:30,709 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:03:30,709 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:03:30,709 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367499093] [2022-02-15 13:03:30,709 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367499093] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:03:30,709 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [651465447] [2022-02-15 13:03:30,709 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-15 13:03:30,709 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:03:30,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:03:30,710 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) [2022-02-15 13:03:30,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Waiting until timeout for monitored process [2022-02-15 13:03:30,728 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-15 13:03:30,728 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 13:03:30,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-15 13:03:30,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:03:30,847 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 12 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:03:30,848 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:03:30,896 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:03:30,897 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [651465447] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:03:30,897 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:03:30,897 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 9] total 16 [2022-02-15 13:03:30,897 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327522169] [2022-02-15 13:03:30,897 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:03:30,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-15 13:03:30,897 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:03:30,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-15 13:03:30,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2022-02-15 13:03:30,897 INFO L87 Difference]: Start difference. First operand 27411 states and 65729 transitions. Second operand has 16 states, 16 states have (on average 3.3125) internal successors, (53), 16 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) [2022-02-15 13:03:31,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:03:31,681 INFO L93 Difference]: Finished difference Result 35488 states and 84024 transitions. [2022-02-15 13:03:31,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-02-15 13:03:31,681 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.3125) internal successors, (53), 16 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 33 [2022-02-15 13:03:31,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:03:31,873 INFO L225 Difference]: With dead ends: 35488 [2022-02-15 13:03:31,873 INFO L226 Difference]: Without dead ends: 35488 [2022-02-15 13:03:31,873 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1399 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1526, Invalid=3030, Unknown=0, NotChecked=0, Total=4556 [2022-02-15 13:03:31,874 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 234 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 402 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 13:03:31,874 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [234 Valid, 240 Invalid, 441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 402 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 13:03:31,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35488 states. [2022-02-15 13:03:32,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35488 to 29994. [2022-02-15 13:03:32,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29994 states, 29993 states have (on average 2.400693495148868) internal successors, (72004), 29993 states have internal predecessors, (72004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:03:32,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29994 states to 29994 states and 72004 transitions. [2022-02-15 13:03:32,558 INFO L78 Accepts]: Start accepts. Automaton has 29994 states and 72004 transitions. Word has length 33 [2022-02-15 13:03:32,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:03:32,558 INFO L470 AbstractCegarLoop]: Abstraction has 29994 states and 72004 transitions. [2022-02-15 13:03:32,559 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.3125) internal successors, (53), 16 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) [2022-02-15 13:03:32,559 INFO L276 IsEmpty]: Start isEmpty. Operand 29994 states and 72004 transitions. [2022-02-15 13:03:32,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-15 13:03:32,582 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:03:32,582 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:03:32,598 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Ended with exit code 0 [2022-02-15 13:03:32,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112,105 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:03:32,783 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:03:32,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:03:32,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1346433230, now seen corresponding path program 101 times [2022-02-15 13:03:32,783 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:03:32,783 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974448029] [2022-02-15 13:03:32,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:03:32,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:03:32,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:03:32,830 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 14 proven. 19 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-15 13:03:32,830 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:03:32,830 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974448029] [2022-02-15 13:03:32,830 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974448029] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:03:32,830 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [529424219] [2022-02-15 13:03:32,830 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-15 13:03:32,831 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:03:32,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:03:32,832 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) [2022-02-15 13:03:32,832 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Waiting until timeout for monitored process [2022-02-15 13:03:32,852 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-02-15 13:03:32,853 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 13:03:32,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-15 13:03:32,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:03:32,966 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 21 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:03:32,966 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:03:33,021 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 14 proven. 19 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-15 13:03:33,021 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [529424219] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:03:33,021 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:03:33,021 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 9] total 16 [2022-02-15 13:03:33,021 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29805503] [2022-02-15 13:03:33,021 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:03:33,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-15 13:03:33,021 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:03:33,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-15 13:03:33,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2022-02-15 13:03:33,022 INFO L87 Difference]: Start difference. First operand 29994 states and 72004 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) [2022-02-15 13:03:33,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:03:33,726 INFO L93 Difference]: Finished difference Result 34655 states and 82191 transitions. [2022-02-15 13:03:33,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-02-15 13:03:33,727 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 [2022-02-15 13:03:33,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:03:33,785 INFO L225 Difference]: With dead ends: 34655 [2022-02-15 13:03:33,786 INFO L226 Difference]: Without dead ends: 34646 [2022-02-15 13:03:33,786 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 841 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1030, Invalid=2162, Unknown=0, NotChecked=0, Total=3192 [2022-02-15 13:03:33,786 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 232 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 13:03:33,786 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [232 Valid, 247 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 385 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 13:03:33,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34646 states. [2022-02-15 13:03:34,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34646 to 28301. [2022-02-15 13:03:34,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28301 states, 28300 states have (on average 2.3935689045936397) internal successors, (67738), 28300 states have internal predecessors, (67738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:03:34,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28301 states to 28301 states and 67738 transitions. [2022-02-15 13:03:34,348 INFO L78 Accepts]: Start accepts. Automaton has 28301 states and 67738 transitions. Word has length 33 [2022-02-15 13:03:34,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:03:34,348 INFO L470 AbstractCegarLoop]: Abstraction has 28301 states and 67738 transitions. [2022-02-15 13:03:34,348 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) [2022-02-15 13:03:34,348 INFO L276 IsEmpty]: Start isEmpty. Operand 28301 states and 67738 transitions. [2022-02-15 13:03:34,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-15 13:03:34,476 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:03:34,476 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:03:34,491 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Ended with exit code 0 [2022-02-15 13:03:34,676 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,SelfDestructingSolverStorable113 [2022-02-15 13:03:34,677 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:03:34,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:03:34,677 INFO L85 PathProgramCache]: Analyzing trace with hash 840086964, now seen corresponding path program 102 times [2022-02-15 13:03:34,677 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:03:34,677 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146047539] [2022-02-15 13:03:34,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:03:34,677 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:03:34,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:03:34,720 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 12 proven. 21 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-15 13:03:34,720 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:03:34,721 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146047539] [2022-02-15 13:03:34,721 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146047539] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:03:34,721 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [443422267] [2022-02-15 13:03:34,721 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-15 13:03:34,721 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:03:34,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:03:34,722 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) [2022-02-15 13:03:34,722 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Waiting until timeout for monitored process [2022-02-15 13:03:34,742 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-02-15 13:03:34,742 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 13:03:34,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-15 13:03:34,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:03:34,864 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 20 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:03:34,864 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:03:34,933 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 12 proven. 21 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-15 13:03:34,933 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [443422267] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:03:34,933 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:03:34,933 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 10] total 17 [2022-02-15 13:03:34,933 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065163425] [2022-02-15 13:03:34,933 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:03:34,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-15 13:03:34,934 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:03:34,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-15 13:03:34,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2022-02-15 13:03:34,934 INFO L87 Difference]: Start difference. First operand 28301 states and 67738 transitions. Second operand has 17 states, 17 states have (on average 2.8823529411764706) internal successors, (49), 17 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) [2022-02-15 13:03:35,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:03:35,569 INFO L93 Difference]: Finished difference Result 33895 states and 80186 transitions. [2022-02-15 13:03:35,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-02-15 13:03:35,570 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.8823529411764706) internal successors, (49), 17 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 [2022-02-15 13:03:35,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:03:35,650 INFO L225 Difference]: With dead ends: 33895 [2022-02-15 13:03:35,650 INFO L226 Difference]: Without dead ends: 33859 [2022-02-15 13:03:35,650 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 59 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 748 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=877, Invalid=1985, Unknown=0, NotChecked=0, Total=2862 [2022-02-15 13:03:35,651 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 214 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 13:03:35,651 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [214 Valid, 254 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 13:03:35,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33859 states. [2022-02-15 13:03:36,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33859 to 27687. [2022-02-15 13:03:36,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27687 states, 27686 states have (on average 2.394567651520624) internal successors, (66296), 27686 states have internal predecessors, (66296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:03:36,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27687 states to 27687 states and 66296 transitions. [2022-02-15 13:03:36,272 INFO L78 Accepts]: Start accepts. Automaton has 27687 states and 66296 transitions. Word has length 33 [2022-02-15 13:03:36,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:03:36,272 INFO L470 AbstractCegarLoop]: Abstraction has 27687 states and 66296 transitions. [2022-02-15 13:03:36,272 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.8823529411764706) internal successors, (49), 17 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) [2022-02-15 13:03:36,272 INFO L276 IsEmpty]: Start isEmpty. Operand 27687 states and 66296 transitions. [2022-02-15 13:03:36,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-15 13:03:36,373 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:03:36,373 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:03:36,389 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Ended with exit code 0 [2022-02-15 13:03:36,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 107 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable114 [2022-02-15 13:03:36,575 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:03:36,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:03:36,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1713544174, now seen corresponding path program 103 times [2022-02-15 13:03:36,575 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:03:36,575 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876992384] [2022-02-15 13:03:36,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:03:36,575 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:03:36,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:03:36,621 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 14 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:03:36,621 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:03:36,622 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876992384] [2022-02-15 13:03:36,622 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876992384] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:03:36,622 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1320475498] [2022-02-15 13:03:36,622 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-15 13:03:36,622 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:03:36,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:03:36,623 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) [2022-02-15 13:03:36,623 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Waiting until timeout for monitored process [2022-02-15 13:03:36,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:03:36,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-15 13:03:36,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:03:36,761 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 22 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:03:36,761 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:03:36,819 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 14 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:03:36,819 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1320475498] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:03:36,819 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:03:36,819 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 18 [2022-02-15 13:03:36,819 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105819237] [2022-02-15 13:03:36,819 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:03:36,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:03:36,819 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:03:36,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:03:36,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:03:36,820 INFO L87 Difference]: Start difference. First operand 27687 states and 66296 transitions. Second operand has 18 states, 18 states have (on average 2.7222222222222223) internal successors, (49), 18 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) [2022-02-15 13:03:37,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:03:37,342 INFO L93 Difference]: Finished difference Result 33459 states and 79150 transitions. [2022-02-15 13:03:37,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-02-15 13:03:37,343 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.7222222222222223) internal successors, (49), 18 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 [2022-02-15 13:03:37,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:03:37,411 INFO L225 Difference]: With dead ends: 33459 [2022-02-15 13:03:37,412 INFO L226 Difference]: Without dead ends: 33417 [2022-02-15 13:03:37,412 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 646 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=746, Invalid=1804, Unknown=0, NotChecked=0, Total=2550 [2022-02-15 13:03:37,412 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 185 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 13:03:37,412 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [185 Valid, 266 Invalid, 426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 399 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 13:03:37,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33417 states. [2022-02-15 13:03:37,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33417 to 27981. [2022-02-15 13:03:37,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27981 states, 27980 states have (on average 2.398141529664046) internal successors, (67100), 27980 states have internal predecessors, (67100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:03:37,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27981 states to 27981 states and 67100 transitions. [2022-02-15 13:03:37,998 INFO L78 Accepts]: Start accepts. Automaton has 27981 states and 67100 transitions. Word has length 33 [2022-02-15 13:03:37,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:03:37,998 INFO L470 AbstractCegarLoop]: Abstraction has 27981 states and 67100 transitions. [2022-02-15 13:03:37,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.7222222222222223) internal successors, (49), 18 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) [2022-02-15 13:03:37,998 INFO L276 IsEmpty]: Start isEmpty. Operand 27981 states and 67100 transitions. [2022-02-15 13:03:38,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-15 13:03:38,020 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:03:38,020 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:03:38,035 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Ended with exit code 0 [2022-02-15 13:03:38,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115,108 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:03:38,220 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:03:38,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:03:38,221 INFO L85 PathProgramCache]: Analyzing trace with hash -1516990898, now seen corresponding path program 104 times [2022-02-15 13:03:38,221 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:03:38,221 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745582325] [2022-02-15 13:03:38,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:03:38,221 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:03:38,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:03:38,266 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 7 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:03:38,266 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:03:38,266 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745582325] [2022-02-15 13:03:38,266 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745582325] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:03:38,267 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1675630419] [2022-02-15 13:03:38,267 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-15 13:03:38,267 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:03:38,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:03:38,268 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) [2022-02-15 13:03:38,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Waiting until timeout for monitored process [2022-02-15 13:03:38,286 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-15 13:03:38,286 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 13:03:38,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-15 13:03:38,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:03:38,437 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 12 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:03:38,437 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:03:38,488 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 7 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:03:38,488 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1675630419] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:03:38,488 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:03:38,488 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 19 [2022-02-15 13:03:38,489 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324416137] [2022-02-15 13:03:38,489 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:03:38,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-15 13:03:38,489 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:03:38,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-15 13:03:38,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2022-02-15 13:03:38,489 INFO L87 Difference]: Start difference. First operand 27981 states and 67100 transitions. Second operand has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 19 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:03:39,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:03:39,179 INFO L93 Difference]: Finished difference Result 31375 states and 74465 transitions. [2022-02-15 13:03:39,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-02-15 13:03:39,179 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 19 states have internal predecessors, (56), 0 states have call successors, (0), 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 [2022-02-15 13:03:39,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:03:39,232 INFO L225 Difference]: With dead ends: 31375 [2022-02-15 13:03:39,232 INFO L226 Difference]: Without dead ends: 31353 [2022-02-15 13:03:39,233 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 610 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=708, Invalid=1842, Unknown=0, NotChecked=0, Total=2550 [2022-02-15 13:03:39,233 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 131 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-15 13:03:39,233 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [131 Valid, 258 Invalid, 493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 456 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-15 13:03:39,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31353 states. [2022-02-15 13:03:39,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31353 to 28442. [2022-02-15 13:03:39,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28442 states, 28441 states have (on average 2.3948876621778417) internal successors, (68113), 28441 states have internal predecessors, (68113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:03:39,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28442 states to 28442 states and 68113 transitions. [2022-02-15 13:03:39,796 INFO L78 Accepts]: Start accepts. Automaton has 28442 states and 68113 transitions. Word has length 33 [2022-02-15 13:03:39,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:03:39,796 INFO L470 AbstractCegarLoop]: Abstraction has 28442 states and 68113 transitions. [2022-02-15 13:03:39,796 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 19 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:03:39,796 INFO L276 IsEmpty]: Start isEmpty. Operand 28442 states and 68113 transitions. [2022-02-15 13:03:39,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-15 13:03:39,819 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:03:39,819 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:03:39,834 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Ended with exit code 0 [2022-02-15 13:03:40,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116,109 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:03:40,023 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:03:40,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:03:40,024 INFO L85 PathProgramCache]: Analyzing trace with hash -264469234, now seen corresponding path program 105 times [2022-02-15 13:03:40,024 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:03:40,024 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596225677] [2022-02-15 13:03:40,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:03:40,024 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:03:40,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:03:40,085 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 7 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:03:40,085 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:03:40,085 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596225677] [2022-02-15 13:03:40,085 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596225677] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:03:40,085 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1511826294] [2022-02-15 13:03:40,086 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-15 13:03:40,086 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:03:40,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:03:40,087 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) [2022-02-15 13:03:40,088 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Waiting until timeout for monitored process [2022-02-15 13:03:40,106 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-02-15 13:03:40,106 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 13:03:40,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-15 13:03:40,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:03:40,249 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 12 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:03:40,249 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:03:40,300 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 7 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:03:40,300 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1511826294] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:03:40,300 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:03:40,300 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 10] total 18 [2022-02-15 13:03:40,300 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679578900] [2022-02-15 13:03:40,300 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:03:40,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:03:40,300 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:03:40,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:03:40,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:03:40,301 INFO L87 Difference]: Start difference. First operand 28442 states and 68113 transitions. Second operand has 18 states, 18 states have (on average 3.111111111111111) internal successors, (56), 18 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:03:40,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:03:40,968 INFO L93 Difference]: Finished difference Result 35592 states and 84293 transitions. [2022-02-15 13:03:40,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-02-15 13:03:40,969 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.111111111111111) internal successors, (56), 18 states have internal predecessors, (56), 0 states have call successors, (0), 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 [2022-02-15 13:03:40,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:03:41,035 INFO L225 Difference]: With dead ends: 35592 [2022-02-15 13:03:41,035 INFO L226 Difference]: Without dead ends: 35582 [2022-02-15 13:03:41,036 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 811 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=809, Invalid=2053, Unknown=0, NotChecked=0, Total=2862 [2022-02-15 13:03:41,036 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 178 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 535 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 13:03:41,036 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [178 Valid, 308 Invalid, 580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 535 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 13:03:41,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35582 states. [2022-02-15 13:03:41,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35582 to 29983. [2022-02-15 13:03:41,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29983 states, 29982 states have (on average 2.395337202321393) internal successors, (71817), 29982 states have internal predecessors, (71817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:03:41,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29983 states to 29983 states and 71817 transitions. [2022-02-15 13:03:41,750 INFO L78 Accepts]: Start accepts. Automaton has 29983 states and 71817 transitions. Word has length 33 [2022-02-15 13:03:41,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:03:41,750 INFO L470 AbstractCegarLoop]: Abstraction has 29983 states and 71817 transitions. [2022-02-15 13:03:41,750 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.111111111111111) internal successors, (56), 18 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:03:41,750 INFO L276 IsEmpty]: Start isEmpty. Operand 29983 states and 71817 transitions. [2022-02-15 13:03:41,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-15 13:03:41,772 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:03:41,772 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:03:41,788 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Ended with exit code 0 [2022-02-15 13:03:41,974 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,SelfDestructingSolverStorable117 [2022-02-15 13:03:41,974 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:03:41,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:03:41,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1102448206, now seen corresponding path program 106 times [2022-02-15 13:03:41,974 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:03:41,974 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438578768] [2022-02-15 13:03:41,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:03:41,974 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:03:41,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:03:42,009 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 7 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:03:42,009 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:03:42,010 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438578768] [2022-02-15 13:03:42,010 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438578768] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:03:42,010 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1164205052] [2022-02-15 13:03:42,010 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-15 13:03:42,010 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:03:42,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:03:42,011 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) [2022-02-15 13:03:42,014 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Waiting until timeout for monitored process [2022-02-15 13:03:42,031 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-15 13:03:42,031 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 13:03:42,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-15 13:03:42,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:03:42,167 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 12 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:03:42,167 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:03:42,217 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 7 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:03:42,217 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1164205052] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:03:42,217 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:03:42,217 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 9] total 17 [2022-02-15 13:03:42,217 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80101663] [2022-02-15 13:03:42,217 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:03:42,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-15 13:03:42,218 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:03:42,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-15 13:03:42,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-02-15 13:03:42,218 INFO L87 Difference]: Start difference. First operand 29983 states and 71817 transitions. Second operand has 17 states, 17 states have (on average 3.2941176470588234) internal successors, (56), 17 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:03:42,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:03:42,944 INFO L93 Difference]: Finished difference Result 39533 states and 93839 transitions. [2022-02-15 13:03:42,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-02-15 13:03:42,944 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.2941176470588234) internal successors, (56), 17 states have internal predecessors, (56), 0 states have call successors, (0), 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 [2022-02-15 13:03:42,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:03:43,012 INFO L225 Difference]: With dead ends: 39533 [2022-02-15 13:03:43,013 INFO L226 Difference]: Without dead ends: 39531 [2022-02-15 13:03:43,013 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 59 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1365 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1227, Invalid=2679, Unknown=0, NotChecked=0, Total=3906 [2022-02-15 13:03:43,013 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 169 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 463 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 13:03:43,014 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [169 Valid, 275 Invalid, 503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 463 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 13:03:43,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39531 states. [2022-02-15 13:03:43,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39531 to 32701. [2022-02-15 13:03:43,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32701 states, 32700 states have (on average 2.3938837920489298) internal successors, (78280), 32700 states have internal predecessors, (78280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:03:43,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32701 states to 32701 states and 78280 transitions. [2022-02-15 13:03:43,841 INFO L78 Accepts]: Start accepts. Automaton has 32701 states and 78280 transitions. Word has length 33 [2022-02-15 13:03:43,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:03:43,842 INFO L470 AbstractCegarLoop]: Abstraction has 32701 states and 78280 transitions. [2022-02-15 13:03:43,842 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.2941176470588234) internal successors, (56), 17 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:03:43,842 INFO L276 IsEmpty]: Start isEmpty. Operand 32701 states and 78280 transitions. [2022-02-15 13:03:43,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-15 13:03:43,865 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:03:43,865 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:03:43,880 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Ended with exit code 0 [2022-02-15 13:03:44,066 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,SelfDestructingSolverStorable118 [2022-02-15 13:03:44,067 INFO L402 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:03:44,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:03:44,067 INFO L85 PathProgramCache]: Analyzing trace with hash -867300082, now seen corresponding path program 107 times [2022-02-15 13:03:44,067 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:03:44,067 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751361242] [2022-02-15 13:03:44,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:03:44,067 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:03:44,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:03:44,100 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 7 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:03:44,100 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:03:44,101 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751361242] [2022-02-15 13:03:44,101 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751361242] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:03:44,101 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [717574227] [2022-02-15 13:03:44,101 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-15 13:03:44,101 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:03:44,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:03:44,102 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) [2022-02-15 13:03:44,102 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Waiting until timeout for monitored process [2022-02-15 13:03:44,120 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-02-15 13:03:44,120 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 13:03:44,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-15 13:03:44,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:03:44,265 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 12 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:03:44,265 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:03:44,325 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 7 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:03:44,325 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [717574227] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:03:44,325 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:03:44,325 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 8] total 16 [2022-02-15 13:03:44,325 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632024919] [2022-02-15 13:03:44,325 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:03:44,325 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-15 13:03:44,325 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:03:44,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-15 13:03:44,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2022-02-15 13:03:44,326 INFO L87 Difference]: Start difference. First operand 32701 states and 78280 transitions. Second operand has 16 states, 16 states have (on average 3.5) internal successors, (56), 16 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:03:45,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:03:45,134 INFO L93 Difference]: Finished difference Result 46041 states and 109158 transitions. [2022-02-15 13:03:45,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-02-15 13:03:45,134 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.5) internal successors, (56), 16 states have internal predecessors, (56), 0 states have call successors, (0), 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 [2022-02-15 13:03:45,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:03:45,376 INFO L225 Difference]: With dead ends: 46041 [2022-02-15 13:03:45,376 INFO L226 Difference]: Without dead ends: 46041 [2022-02-15 13:03:45,377 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1628 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1414, Invalid=2876, Unknown=0, NotChecked=0, Total=4290 [2022-02-15 13:03:45,377 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 197 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 457 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 13:03:45,377 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [197 Valid, 262 Invalid, 489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 457 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 13:03:45,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46041 states. [2022-02-15 13:03:46,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46041 to 40567. [2022-02-15 13:03:46,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40567 states, 40566 states have (on average 2.3920524577232163) internal successors, (97036), 40566 states have internal predecessors, (97036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:03:46,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40567 states to 40567 states and 97036 transitions. [2022-02-15 13:03:46,289 INFO L78 Accepts]: Start accepts. Automaton has 40567 states and 97036 transitions. Word has length 33 [2022-02-15 13:03:46,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:03:46,289 INFO L470 AbstractCegarLoop]: Abstraction has 40567 states and 97036 transitions. [2022-02-15 13:03:46,289 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.5) internal successors, (56), 16 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:03:46,289 INFO L276 IsEmpty]: Start isEmpty. Operand 40567 states and 97036 transitions. [2022-02-15 13:03:46,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-15 13:03:46,316 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:03:46,316 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:03:46,331 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Ended with exit code 0 [2022-02-15 13:03:46,516 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119,112 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:03:46,517 INFO L402 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:03:46,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:03:46,517 INFO L85 PathProgramCache]: Analyzing trace with hash 487952296, now seen corresponding path program 108 times [2022-02-15 13:03:46,517 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:03:46,517 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403937233] [2022-02-15 13:03:46,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:03:46,517 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:03:46,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:03:46,551 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 17 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-15 13:03:46,551 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:03:46,551 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403937233] [2022-02-15 13:03:46,551 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403937233] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:03:46,551 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1347997443] [2022-02-15 13:03:46,551 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-15 13:03:46,552 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:03:46,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:03:46,552 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) [2022-02-15 13:03:46,553 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Waiting until timeout for monitored process [2022-02-15 13:03:46,571 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-02-15 13:03:46,571 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 13:03:46,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-15 13:03:46,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:03:46,698 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 20 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:03:46,698 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:03:46,750 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 17 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-15 13:03:46,751 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1347997443] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:03:46,751 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:03:46,751 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 8] total 16 [2022-02-15 13:03:46,751 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138167361] [2022-02-15 13:03:46,751 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:03:46,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-15 13:03:46,751 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:03:46,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-15 13:03:46,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2022-02-15 13:03:46,752 INFO L87 Difference]: Start difference. First operand 40567 states and 97036 transitions. Second operand has 16 states, 16 states have (on average 3.25) internal successors, (52), 16 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) [2022-02-15 13:03:47,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:03:47,516 INFO L93 Difference]: Finished difference Result 45487 states and 107865 transitions. [2022-02-15 13:03:47,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-02-15 13:03:47,517 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.25) internal successors, (52), 16 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) Word has length 33 [2022-02-15 13:03:47,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:03:47,597 INFO L225 Difference]: With dead ends: 45487 [2022-02-15 13:03:47,597 INFO L226 Difference]: Without dead ends: 45481 [2022-02-15 13:03:47,598 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1210 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1091, Invalid=2449, Unknown=0, NotChecked=0, Total=3540 [2022-02-15 13:03:47,598 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 214 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 428 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 13:03:47,598 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [214 Valid, 248 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 428 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 13:03:47,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45481 states. [2022-02-15 13:03:48,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45481 to 39993. [2022-02-15 13:03:48,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39993 states, 39992 states have (on average 2.389602920584117) internal successors, (95565), 39992 states have internal predecessors, (95565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:03:48,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39993 states to 39993 states and 95565 transitions. [2022-02-15 13:03:48,430 INFO L78 Accepts]: Start accepts. Automaton has 39993 states and 95565 transitions. Word has length 33 [2022-02-15 13:03:48,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:03:48,430 INFO L470 AbstractCegarLoop]: Abstraction has 39993 states and 95565 transitions. [2022-02-15 13:03:48,430 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.25) internal successors, (52), 16 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) [2022-02-15 13:03:48,431 INFO L276 IsEmpty]: Start isEmpty. Operand 39993 states and 95565 transitions. [2022-02-15 13:03:48,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-15 13:03:48,456 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:03:48,456 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:03:48,471 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Forceful destruction successful, exit code 0 [2022-02-15 13:03:48,656 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,SelfDestructingSolverStorable120 [2022-02-15 13:03:48,656 INFO L402 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:03:48,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:03:48,657 INFO L85 PathProgramCache]: Analyzing trace with hash -18393970, now seen corresponding path program 109 times [2022-02-15 13:03:48,657 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:03:48,657 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351842014] [2022-02-15 13:03:48,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:03:48,657 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:03:48,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:03:48,699 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 14 proven. 19 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-15 13:03:48,699 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:03:48,699 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351842014] [2022-02-15 13:03:48,699 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351842014] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:03:48,699 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1282996523] [2022-02-15 13:03:48,700 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-15 13:03:48,700 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:03:48,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:03:48,701 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) [2022-02-15 13:03:48,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Waiting until timeout for monitored process [2022-02-15 13:03:48,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:03:48,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-15 13:03:48,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:03:48,844 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 18 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:03:48,845 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:03:48,894 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 14 proven. 19 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-15 13:03:48,894 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1282996523] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:03:48,894 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:03:48,894 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 9] total 17 [2022-02-15 13:03:48,894 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743182579] [2022-02-15 13:03:48,894 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:03:48,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-15 13:03:48,894 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:03:48,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-15 13:03:48,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2022-02-15 13:03:48,895 INFO L87 Difference]: Start difference. First operand 39993 states and 95565 transitions. Second operand has 17 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 17 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) [2022-02-15 13:03:49,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:03:49,665 INFO L93 Difference]: Finished difference Result 45917 states and 108842 transitions. [2022-02-15 13:03:49,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-02-15 13:03:49,665 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 17 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) Word has length 33 [2022-02-15 13:03:49,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:03:49,747 INFO L225 Difference]: With dead ends: 45917 [2022-02-15 13:03:49,747 INFO L226 Difference]: Without dead ends: 45893 [2022-02-15 13:03:49,747 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 59 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1045 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=940, Invalid=2252, Unknown=0, NotChecked=0, Total=3192 [2022-02-15 13:03:49,748 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 249 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 13:03:49,748 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [249 Valid, 212 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 13:03:49,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45893 states. [2022-02-15 13:03:50,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45893 to 41022. [2022-02-15 13:03:50,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41022 states, 41021 states have (on average 2.388825235854806) internal successors, (97992), 41021 states have internal predecessors, (97992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:03:50,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41022 states to 41022 states and 97992 transitions. [2022-02-15 13:03:50,664 INFO L78 Accepts]: Start accepts. Automaton has 41022 states and 97992 transitions. Word has length 33 [2022-02-15 13:03:50,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:03:50,664 INFO L470 AbstractCegarLoop]: Abstraction has 41022 states and 97992 transitions. [2022-02-15 13:03:50,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 17 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) [2022-02-15 13:03:50,664 INFO L276 IsEmpty]: Start isEmpty. Operand 41022 states and 97992 transitions. [2022-02-15 13:03:50,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-15 13:03:50,690 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:03:50,690 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:03:50,705 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Ended with exit code 0 [2022-02-15 13:03:50,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121,114 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:03:50,890 INFO L402 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:03:50,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:03:50,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1722942188, now seen corresponding path program 110 times [2022-02-15 13:03:50,891 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:03:50,891 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147792383] [2022-02-15 13:03:50,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:03:50,891 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:03:50,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:03:50,931 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 12 proven. 21 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-15 13:03:50,932 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:03:50,932 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147792383] [2022-02-15 13:03:50,932 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147792383] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:03:50,932 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1729154114] [2022-02-15 13:03:50,932 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-15 13:03:50,932 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:03:50,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:03:50,933 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) [2022-02-15 13:03:50,934 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Waiting until timeout for monitored process [2022-02-15 13:03:50,952 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-15 13:03:50,953 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 13:03:50,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-15 13:03:50,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:03:51,079 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 17 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:03:51,079 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:03:51,132 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 12 proven. 21 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-15 13:03:51,133 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1729154114] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:03:51,133 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:03:51,133 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 10] total 18 [2022-02-15 13:03:51,133 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152429737] [2022-02-15 13:03:51,133 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:03:51,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:03:51,133 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:03:51,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:03:51,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:03:51,134 INFO L87 Difference]: Start difference. First operand 41022 states and 97992 transitions. Second operand has 18 states, 18 states have (on average 2.888888888888889) internal successors, (52), 18 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) [2022-02-15 13:03:51,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:03:51,940 INFO L93 Difference]: Finished difference Result 48036 states and 113852 transitions. [2022-02-15 13:03:51,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-02-15 13:03:51,941 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.888888888888889) internal successors, (52), 18 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) Word has length 33 [2022-02-15 13:03:51,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:03:52,023 INFO L225 Difference]: With dead ends: 48036 [2022-02-15 13:03:52,023 INFO L226 Difference]: Without dead ends: 47994 [2022-02-15 13:03:52,023 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 896 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=806, Invalid=2056, Unknown=0, NotChecked=0, Total=2862 [2022-02-15 13:03:52,024 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 223 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 13:03:52,024 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [223 Valid, 247 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 404 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 13:03:52,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47994 states. [2022-02-15 13:03:52,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47994 to 43024. [2022-02-15 13:03:52,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43024 states, 43023 states have (on average 2.388420147363038) internal successors, (102757), 43023 states have internal predecessors, (102757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:03:52,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43024 states to 43024 states and 102757 transitions. [2022-02-15 13:03:52,982 INFO L78 Accepts]: Start accepts. Automaton has 43024 states and 102757 transitions. Word has length 33 [2022-02-15 13:03:52,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:03:52,982 INFO L470 AbstractCegarLoop]: Abstraction has 43024 states and 102757 transitions. [2022-02-15 13:03:52,982 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.888888888888889) internal successors, (52), 18 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) [2022-02-15 13:03:52,982 INFO L276 IsEmpty]: Start isEmpty. Operand 43024 states and 102757 transitions. [2022-02-15 13:03:53,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-15 13:03:53,012 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:03:53,012 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:03:53,028 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Ended with exit code 0 [2022-02-15 13:03:53,213 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 115 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable122 [2022-02-15 13:03:53,213 INFO L402 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:03:53,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:03:53,213 INFO L85 PathProgramCache]: Analyzing trace with hash -1041543218, now seen corresponding path program 111 times [2022-02-15 13:03:53,213 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:03:53,213 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215584006] [2022-02-15 13:03:53,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:03:53,213 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:03:53,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:03:53,259 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 17 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:03:53,259 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:03:53,259 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215584006] [2022-02-15 13:03:53,259 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215584006] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:03:53,259 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [625792853] [2022-02-15 13:03:53,260 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-15 13:03:53,260 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:03:53,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:03:53,261 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) [2022-02-15 13:03:53,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Waiting until timeout for monitored process [2022-02-15 13:03:53,286 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-02-15 13:03:53,286 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 13:03:53,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-15 13:03:53,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:03:53,429 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 22 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:03:53,430 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:03:53,482 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 17 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:03:53,482 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [625792853] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:03:53,482 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:03:53,482 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 19 [2022-02-15 13:03:53,482 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018255609] [2022-02-15 13:03:53,482 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:03:53,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-15 13:03:53,482 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:03:53,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-15 13:03:53,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2022-02-15 13:03:53,483 INFO L87 Difference]: Start difference. First operand 43024 states and 102757 transitions. Second operand has 19 states, 19 states have (on average 2.736842105263158) internal successors, (52), 19 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) [2022-02-15 13:03:54,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:03:54,074 INFO L93 Difference]: Finished difference Result 49178 states and 116640 transitions. [2022-02-15 13:03:54,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-02-15 13:03:54,075 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.736842105263158) internal successors, (52), 19 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) Word has length 33 [2022-02-15 13:03:54,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:03:54,191 INFO L225 Difference]: With dead ends: 49178 [2022-02-15 13:03:54,191 INFO L226 Difference]: Without dead ends: 49118 [2022-02-15 13:03:54,192 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 750 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=694, Invalid=1856, Unknown=0, NotChecked=0, Total=2550 [2022-02-15 13:03:54,192 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 163 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 468 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 13:03:54,192 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [163 Valid, 270 Invalid, 494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 468 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 13:03:54,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49118 states. [2022-02-15 13:03:55,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49118 to 44346. [2022-02-15 13:03:55,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44346 states, 44345 states have (on average 2.387529597474349) internal successors, (105875), 44345 states have internal predecessors, (105875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:03:55,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44346 states to 44346 states and 105875 transitions. [2022-02-15 13:03:55,361 INFO L78 Accepts]: Start accepts. Automaton has 44346 states and 105875 transitions. Word has length 33 [2022-02-15 13:03:55,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:03:55,361 INFO L470 AbstractCegarLoop]: Abstraction has 44346 states and 105875 transitions. [2022-02-15 13:03:55,361 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.736842105263158) internal successors, (52), 19 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) [2022-02-15 13:03:55,361 INFO L276 IsEmpty]: Start isEmpty. Operand 44346 states and 105875 transitions. [2022-02-15 13:03:55,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-02-15 13:03:55,571 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:03:55,571 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:03:55,617 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Forceful destruction successful, exit code 0 [2022-02-15 13:03:55,772 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 116 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable123 [2022-02-15 13:03:55,772 INFO L402 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:03:55,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:03:55,772 INFO L85 PathProgramCache]: Analyzing trace with hash -2050889375, now seen corresponding path program 112 times [2022-02-15 13:03:55,772 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:03:55,773 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480099368] [2022-02-15 13:03:55,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:03:55,773 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:03:55,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:03:55,831 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:03:55,831 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:03:55,831 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480099368] [2022-02-15 13:03:55,831 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480099368] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:03:55,832 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1183930260] [2022-02-15 13:03:55,832 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-15 13:03:55,832 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:03:55,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:03:55,833 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) [2022-02-15 13:03:55,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Waiting until timeout for monitored process [2022-02-15 13:03:55,861 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-15 13:03:55,861 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 13:03:55,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 19 conjunts are in the unsatisfiable core [2022-02-15 13:03:55,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:03:55,968 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:03:55,968 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:03:56,073 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:03:56,073 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1183930260] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:03:56,073 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:03:56,073 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2022-02-15 13:03:56,073 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114702591] [2022-02-15 13:03:56,073 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:03:56,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-15 13:03:56,074 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:03:56,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-15 13:03:56,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-02-15 13:03:56,074 INFO L87 Difference]: Start difference. First operand 44346 states and 105875 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) [2022-02-15 13:03:56,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:03:56,288 INFO L93 Difference]: Finished difference Result 48008 states and 114788 transitions. [2022-02-15 13:03:56,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-15 13:03:56,288 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 [2022-02-15 13:03:56,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:03:56,420 INFO L225 Difference]: With dead ends: 48008 [2022-02-15 13:03:56,420 INFO L226 Difference]: Without dead ends: 47969 [2022-02-15 13:03:56,420 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 [2022-02-15 13:03:56,420 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 40 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:03:56,421 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 253 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 13:03:56,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47969 states. [2022-02-15 13:03:57,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47969 to 45223. [2022-02-15 13:03:57,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45223 states, 45222 states have (on average 2.3889036309760736) internal successors, (108031), 45222 states have internal predecessors, (108031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:03:57,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45223 states to 45223 states and 108031 transitions. [2022-02-15 13:03:57,433 INFO L78 Accepts]: Start accepts. Automaton has 45223 states and 108031 transitions. Word has length 36 [2022-02-15 13:03:57,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:03:57,433 INFO L470 AbstractCegarLoop]: Abstraction has 45223 states and 108031 transitions. [2022-02-15 13:03:57,433 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) [2022-02-15 13:03:57,433 INFO L276 IsEmpty]: Start isEmpty. Operand 45223 states and 108031 transitions. [2022-02-15 13:03:57,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-02-15 13:03:57,482 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:03:57,482 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:03:57,498 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Ended with exit code 0 [2022-02-15 13:03:57,682 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 117 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable124 [2022-02-15 13:03:57,683 INFO L402 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:03:57,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:03:57,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1969878243, now seen corresponding path program 113 times [2022-02-15 13:03:57,683 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:03:57,683 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241639164] [2022-02-15 13:03:57,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:03:57,684 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:03:57,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:03:57,731 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-15 13:03:57,731 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:03:57,731 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241639164] [2022-02-15 13:03:57,731 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241639164] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:03:57,731 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1277806162] [2022-02-15 13:03:57,731 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-15 13:03:57,731 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:03:57,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:03:57,732 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) [2022-02-15 13:03:57,733 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Waiting until timeout for monitored process [2022-02-15 13:03:57,753 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-02-15 13:03:57,753 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 13:03:57,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 19 conjunts are in the unsatisfiable core [2022-02-15 13:03:57,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:03:57,863 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-15 13:03:57,864 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:03:57,969 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-15 13:03:57,969 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1277806162] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:03:57,969 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:03:57,969 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2022-02-15 13:03:57,969 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726664874] [2022-02-15 13:03:57,969 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:03:57,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-15 13:03:57,969 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:03:57,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-15 13:03:57,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-02-15 13:03:57,970 INFO L87 Difference]: Start difference. First operand 45223 states and 108031 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) [2022-02-15 13:03:58,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:03:58,384 INFO L93 Difference]: Finished difference Result 52337 states and 125670 transitions. [2022-02-15 13:03:58,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-15 13:03:58,385 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 [2022-02-15 13:03:58,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:03:58,492 INFO L225 Difference]: With dead ends: 52337 [2022-02-15 13:03:58,492 INFO L226 Difference]: Without dead ends: 52292 [2022-02-15 13:03:58,493 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 [2022-02-15 13:03:58,493 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 39 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:03:58,493 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 256 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 13:03:58,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52292 states. [2022-02-15 13:03:59,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52292 to 46254. [2022-02-15 13:03:59,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46254 states, 46253 states have (on average 2.3954986703565173) internal successors, (110799), 46253 states have internal predecessors, (110799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:03:59,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46254 states to 46254 states and 110799 transitions. [2022-02-15 13:03:59,563 INFO L78 Accepts]: Start accepts. Automaton has 46254 states and 110799 transitions. Word has length 36 [2022-02-15 13:03:59,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:03:59,563 INFO L470 AbstractCegarLoop]: Abstraction has 46254 states and 110799 transitions. [2022-02-15 13:03:59,563 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) [2022-02-15 13:03:59,563 INFO L276 IsEmpty]: Start isEmpty. Operand 46254 states and 110799 transitions. [2022-02-15 13:03:59,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-02-15 13:03:59,601 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:03:59,601 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:03:59,617 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Forceful destruction successful, exit code 0 [2022-02-15 13:03:59,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 118 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable125 [2022-02-15 13:03:59,803 INFO L402 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:03:59,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:03:59,803 INFO L85 PathProgramCache]: Analyzing trace with hash 27416035, now seen corresponding path program 114 times [2022-02-15 13:03:59,803 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:03:59,803 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098666611] [2022-02-15 13:03:59,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:03:59,803 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:03:59,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:03:59,849 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-15 13:03:59,850 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:03:59,850 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098666611] [2022-02-15 13:03:59,850 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098666611] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:03:59,850 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1297377996] [2022-02-15 13:03:59,850 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-15 13:03:59,850 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:03:59,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:03:59,851 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) [2022-02-15 13:03:59,851 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Waiting until timeout for monitored process [2022-02-15 13:03:59,876 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2022-02-15 13:03:59,876 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 13:03:59,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 19 conjunts are in the unsatisfiable core [2022-02-15 13:03:59,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:03:59,983 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-15 13:03:59,983 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:04:00,087 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-15 13:04:00,087 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1297377996] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:04:00,087 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:04:00,087 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2022-02-15 13:04:00,087 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168322861] [2022-02-15 13:04:00,087 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:04:00,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-15 13:04:00,088 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:04:00,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-15 13:04:00,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-02-15 13:04:00,088 INFO L87 Difference]: Start difference. First operand 46254 states and 110799 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) [2022-02-15 13:04:00,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:04:00,335 INFO L93 Difference]: Finished difference Result 58013 states and 139928 transitions. [2022-02-15 13:04:00,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-15 13:04:00,335 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 [2022-02-15 13:04:00,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:04:00,470 INFO L225 Difference]: With dead ends: 58013 [2022-02-15 13:04:00,470 INFO L226 Difference]: Without dead ends: 57971 [2022-02-15 13:04:00,470 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 [2022-02-15 13:04:00,470 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 38 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:04:00,471 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 256 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 13:04:00,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57971 states. [2022-02-15 13:04:01,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57971 to 49604. [2022-02-15 13:04:01,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49604 states, 49603 states have (on average 2.411446888293047) internal successors, (119615), 49603 states have internal predecessors, (119615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:04:01,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49604 states to 49604 states and 119615 transitions. [2022-02-15 13:04:01,671 INFO L78 Accepts]: Start accepts. Automaton has 49604 states and 119615 transitions. Word has length 36 [2022-02-15 13:04:01,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:04:01,671 INFO L470 AbstractCegarLoop]: Abstraction has 49604 states and 119615 transitions. [2022-02-15 13:04:01,671 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) [2022-02-15 13:04:01,671 INFO L276 IsEmpty]: Start isEmpty. Operand 49604 states and 119615 transitions. [2022-02-15 13:04:01,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-02-15 13:04:01,722 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:04:01,722 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:04:01,738 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Ended with exit code 0 [2022-02-15 13:04:01,923 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,SelfDestructingSolverStorable126 [2022-02-15 13:04:01,923 INFO L402 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:04:01,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:04:01,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1055666851, now seen corresponding path program 115 times [2022-02-15 13:04:01,924 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:04:01,924 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377757143] [2022-02-15 13:04:01,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:04:01,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:04:01,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:04:01,985 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-15 13:04:01,986 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:04:01,986 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377757143] [2022-02-15 13:04:01,986 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377757143] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:04:01,986 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [977583855] [2022-02-15 13:04:01,986 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-15 13:04:01,986 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:04:01,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:04:01,988 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) [2022-02-15 13:04:01,989 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Waiting until timeout for monitored process [2022-02-15 13:04:02,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:04:02,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 19 conjunts are in the unsatisfiable core [2022-02-15 13:04:02,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:04:02,123 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-15 13:04:02,123 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:04:02,420 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-15 13:04:02,420 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [977583855] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:04:02,421 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:04:02,421 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2022-02-15 13:04:02,421 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191571311] [2022-02-15 13:04:02,421 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:04:02,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-15 13:04:02,421 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:04:02,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-15 13:04:02,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-02-15 13:04:02,422 INFO L87 Difference]: Start difference. First operand 49604 states and 119615 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) [2022-02-15 13:04:02,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:04:02,839 INFO L93 Difference]: Finished difference Result 64349 states and 155624 transitions. [2022-02-15 13:04:02,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-15 13:04:02,841 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 [2022-02-15 13:04:02,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:04:03,034 INFO L225 Difference]: With dead ends: 64349 [2022-02-15 13:04:03,034 INFO L226 Difference]: Without dead ends: 64310 [2022-02-15 13:04:03,034 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 [2022-02-15 13:04:03,034 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 37 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:04:03,035 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 257 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 13:04:03,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64310 states. [2022-02-15 13:04:04,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64310 to 54487. [2022-02-15 13:04:04,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54487 states, 54486 states have (on average 2.4248797856330064) internal successors, (132122), 54486 states have internal predecessors, (132122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:04:04,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54487 states to 54487 states and 132122 transitions. [2022-02-15 13:04:04,327 INFO L78 Accepts]: Start accepts. Automaton has 54487 states and 132122 transitions. Word has length 36 [2022-02-15 13:04:04,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:04:04,327 INFO L470 AbstractCegarLoop]: Abstraction has 54487 states and 132122 transitions. [2022-02-15 13:04:04,327 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) [2022-02-15 13:04:04,327 INFO L276 IsEmpty]: Start isEmpty. Operand 54487 states and 132122 transitions. [2022-02-15 13:04:04,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-02-15 13:04:04,373 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:04:04,373 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:04:04,388 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Ended with exit code 0 [2022-02-15 13:04:04,574 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,SelfDestructingSolverStorable127 [2022-02-15 13:04:04,574 INFO L402 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:04:04,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:04:04,575 INFO L85 PathProgramCache]: Analyzing trace with hash 911371171, now seen corresponding path program 116 times [2022-02-15 13:04:04,575 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:04:04,575 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341364231] [2022-02-15 13:04:04,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:04:04,575 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:04:04,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:04:04,621 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-15 13:04:04,622 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:04:04,622 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341364231] [2022-02-15 13:04:04,622 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341364231] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:04:04,622 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1677769657] [2022-02-15 13:04:04,622 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-15 13:04:04,622 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:04:04,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:04:04,623 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) [2022-02-15 13:04:04,623 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Waiting until timeout for monitored process [2022-02-15 13:04:04,642 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-15 13:04:04,642 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 13:04:04,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 19 conjunts are in the unsatisfiable core [2022-02-15 13:04:04,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:04:04,748 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-15 13:04:04,748 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:04:04,852 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-15 13:04:04,853 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1677769657] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:04:04,853 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:04:04,853 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2022-02-15 13:04:04,853 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116533912] [2022-02-15 13:04:04,853 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:04:04,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-15 13:04:04,853 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:04:04,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-15 13:04:04,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-02-15 13:04:04,854 INFO L87 Difference]: Start difference. First operand 54487 states and 132122 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) [2022-02-15 13:04:05,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:04:05,350 INFO L93 Difference]: Finished difference Result 72236 states and 174914 transitions. [2022-02-15 13:04:05,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-15 13:04:05,351 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 [2022-02-15 13:04:05,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:04:05,508 INFO L225 Difference]: With dead ends: 72236 [2022-02-15 13:04:05,508 INFO L226 Difference]: Without dead ends: 72206 [2022-02-15 13:04:05,508 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 [2022-02-15 13:04:05,508 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 36 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:04:05,508 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 256 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 13:04:05,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72206 states. [2022-02-15 13:04:06,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72206 to 71835. [2022-02-15 13:04:06,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71835 states, 71834 states have (on average 2.423044797728095) internal successors, (174057), 71834 states have internal predecessors, (174057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:04:07,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71835 states to 71835 states and 174057 transitions. [2022-02-15 13:04:07,266 INFO L78 Accepts]: Start accepts. Automaton has 71835 states and 174057 transitions. Word has length 36 [2022-02-15 13:04:07,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:04:07,266 INFO L470 AbstractCegarLoop]: Abstraction has 71835 states and 174057 transitions. [2022-02-15 13:04:07,266 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) [2022-02-15 13:04:07,266 INFO L276 IsEmpty]: Start isEmpty. Operand 71835 states and 174057 transitions. [2022-02-15 13:04:07,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-15 13:04:07,351 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:04:07,351 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:04:07,368 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Forceful destruction successful, exit code 0 [2022-02-15 13:04:07,551 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,SelfDestructingSolverStorable128 [2022-02-15 13:04:07,552 INFO L402 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:04:07,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:04:07,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1225885554, now seen corresponding path program 117 times [2022-02-15 13:04:07,552 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:04:07,552 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989867011] [2022-02-15 13:04:07,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:04:07,552 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:04:07,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:04:07,609 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 22 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:04:07,609 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:04:07,609 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989867011] [2022-02-15 13:04:07,609 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989867011] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:04:07,610 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [16187990] [2022-02-15 13:04:07,610 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-15 13:04:07,610 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:04:07,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:04:07,611 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) [2022-02-15 13:04:07,611 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Waiting until timeout for monitored process [2022-02-15 13:04:07,630 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-02-15 13:04:07,630 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 13:04:07,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-15 13:04:07,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:04:07,744 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 22 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:04:07,744 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:04:07,804 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 22 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:04:07,804 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [16187990] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:04:07,804 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:04:07,804 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 18 [2022-02-15 13:04:07,804 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179596194] [2022-02-15 13:04:07,804 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:04:07,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:04:07,805 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:04:07,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:04:07,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:04:07,805 INFO L87 Difference]: Start difference. First operand 71835 states and 174057 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) [2022-02-15 13:04:08,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:04:08,343 INFO L93 Difference]: Finished difference Result 87796 states and 212272 transitions. [2022-02-15 13:04:08,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-15 13:04:08,344 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 39 [2022-02-15 13:04:08,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:04:08,878 INFO L225 Difference]: With dead ends: 87796 [2022-02-15 13:04:08,878 INFO L226 Difference]: Without dead ends: 87796 [2022-02-15 13:04:08,878 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 71 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=261, Invalid=609, Unknown=0, NotChecked=0, Total=870 [2022-02-15 13:04:08,879 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 122 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:04:08,879 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 260 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 13:04:08,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87796 states. [2022-02-15 13:04:10,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87796 to 72340. [2022-02-15 13:04:10,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72340 states, 72339 states have (on average 2.4224692074814413) internal successors, (175239), 72339 states have internal predecessors, (175239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:04:10,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72340 states to 72340 states and 175239 transitions. [2022-02-15 13:04:10,667 INFO L78 Accepts]: Start accepts. Automaton has 72340 states and 175239 transitions. Word has length 39 [2022-02-15 13:04:10,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:04:10,668 INFO L470 AbstractCegarLoop]: Abstraction has 72340 states and 175239 transitions. [2022-02-15 13:04:10,668 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) [2022-02-15 13:04:10,668 INFO L276 IsEmpty]: Start isEmpty. Operand 72340 states and 175239 transitions. [2022-02-15 13:04:10,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-15 13:04:10,753 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:04:10,753 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:04:10,769 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Forceful destruction successful, exit code 0 [2022-02-15 13:04:10,954 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129,122 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:04:10,954 INFO L402 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:04:10,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:04:10,954 INFO L85 PathProgramCache]: Analyzing trace with hash 1232517124, now seen corresponding path program 118 times [2022-02-15 13:04:10,954 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:04:10,955 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943121756] [2022-02-15 13:04:10,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:04:10,955 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:04:10,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:04:11,011 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 35 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:04:11,011 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:04:11,011 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943121756] [2022-02-15 13:04:11,011 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943121756] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:04:11,011 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1624006043] [2022-02-15 13:04:11,011 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-15 13:04:11,011 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:04:11,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:04:11,012 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) [2022-02-15 13:04:11,013 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Waiting until timeout for monitored process [2022-02-15 13:04:11,031 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-15 13:04:11,031 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 13:04:11,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-15 13:04:11,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:04:11,152 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 35 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:04:11,152 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:04:11,214 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 35 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:04:11,215 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1624006043] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:04:11,215 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:04:11,215 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 18 [2022-02-15 13:04:11,215 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569675131] [2022-02-15 13:04:11,215 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:04:11,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:04:11,215 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:04:11,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:04:11,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:04:11,215 INFO L87 Difference]: Start difference. First operand 72340 states and 175239 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) [2022-02-15 13:04:11,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:04:11,749 INFO L93 Difference]: Finished difference Result 103043 states and 246926 transitions. [2022-02-15 13:04:11,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-15 13:04:11,750 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 39 [2022-02-15 13:04:11,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:04:12,324 INFO L225 Difference]: With dead ends: 103043 [2022-02-15 13:04:12,324 INFO L226 Difference]: Without dead ends: 102999 [2022-02-15 13:04:12,324 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 72 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=225, Invalid=645, Unknown=0, NotChecked=0, Total=870 [2022-02-15 13:04:12,324 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 162 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:04:12,325 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [162 Valid, 174 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 13:04:12,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102999 states. [2022-02-15 13:04:13,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102999 to 72340. [2022-02-15 13:04:13,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72340 states, 72339 states have (on average 2.4224415598777975) internal successors, (175237), 72339 states have internal predecessors, (175237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:04:14,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72340 states to 72340 states and 175237 transitions. [2022-02-15 13:04:14,194 INFO L78 Accepts]: Start accepts. Automaton has 72340 states and 175237 transitions. Word has length 39 [2022-02-15 13:04:14,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:04:14,194 INFO L470 AbstractCegarLoop]: Abstraction has 72340 states and 175237 transitions. [2022-02-15 13:04:14,194 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) [2022-02-15 13:04:14,194 INFO L276 IsEmpty]: Start isEmpty. Operand 72340 states and 175237 transitions. [2022-02-15 13:04:14,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-15 13:04:14,274 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:04:14,274 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:04:14,290 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Ended with exit code 0 [2022-02-15 13:04:14,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130,123 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:04:14,475 INFO L402 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:04:14,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:04:14,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1424049078, now seen corresponding path program 119 times [2022-02-15 13:04:14,475 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:04:14,475 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097373141] [2022-02-15 13:04:14,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:04:14,476 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:04:14,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:04:14,533 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 22 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:04:14,533 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:04:14,533 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097373141] [2022-02-15 13:04:14,533 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097373141] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:04:14,533 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [439846655] [2022-02-15 13:04:14,533 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-15 13:04:14,533 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:04:14,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:04:14,534 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) [2022-02-15 13:04:14,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Waiting until timeout for monitored process [2022-02-15 13:04:14,556 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-02-15 13:04:14,557 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 13:04:14,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-15 13:04:14,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:04:14,693 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 22 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:04:14,693 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:04:14,753 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 22 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:04:14,753 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [439846655] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:04:14,753 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:04:14,753 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 19 [2022-02-15 13:04:14,753 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431751582] [2022-02-15 13:04:14,754 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:04:14,754 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-15 13:04:14,754 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:04:14,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-15 13:04:14,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2022-02-15 13:04:14,754 INFO L87 Difference]: Start difference. First operand 72340 states and 175237 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) [2022-02-15 13:04:16,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:04:16,581 INFO L93 Difference]: Finished difference Result 115613 states and 277046 transitions. [2022-02-15 13:04:16,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2022-02-15 13:04:16,581 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 [2022-02-15 13:04:16,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:04:16,889 INFO L225 Difference]: With dead ends: 115613 [2022-02-15 13:04:16,890 INFO L226 Difference]: Without dead ends: 115597 [2022-02-15 13:04:16,890 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4223 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=2730, Invalid=7170, Unknown=0, NotChecked=0, Total=9900 [2022-02-15 13:04:16,890 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 469 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 603 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 469 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-15 13:04:16,890 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [469 Valid, 343 Invalid, 705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 603 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-15 13:04:17,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115597 states. [2022-02-15 13:04:19,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115597 to 85080. [2022-02-15 13:04:19,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85080 states, 85079 states have (on average 2.432468646787104) internal successors, (206952), 85079 states have internal predecessors, (206952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:04:19,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85080 states to 85080 states and 206952 transitions. [2022-02-15 13:04:19,347 INFO L78 Accepts]: Start accepts. Automaton has 85080 states and 206952 transitions. Word has length 39 [2022-02-15 13:04:19,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:04:19,347 INFO L470 AbstractCegarLoop]: Abstraction has 85080 states and 206952 transitions. [2022-02-15 13:04:19,348 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) [2022-02-15 13:04:19,348 INFO L276 IsEmpty]: Start isEmpty. Operand 85080 states and 206952 transitions. [2022-02-15 13:04:19,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-15 13:04:19,436 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:04:19,436 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:04:19,452 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Forceful destruction successful, exit code 0 [2022-02-15 13:04:19,636 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131,124 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:04:19,637 INFO L402 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:04:19,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:04:19,637 INFO L85 PathProgramCache]: Analyzing trace with hash 728697012, now seen corresponding path program 120 times [2022-02-15 13:04:19,637 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:04:19,637 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688369688] [2022-02-15 13:04:19,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:04:19,637 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:04:19,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:04:19,694 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 31 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:04:19,694 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:04:19,694 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688369688] [2022-02-15 13:04:19,694 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688369688] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:04:19,694 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1375580932] [2022-02-15 13:04:19,694 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-15 13:04:19,695 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:04:19,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:04:19,696 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) [2022-02-15 13:04:19,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Waiting until timeout for monitored process [2022-02-15 13:04:19,719 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-02-15 13:04:19,719 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 13:04:19,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-15 13:04:19,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:04:19,845 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 35 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:04:19,846 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:04:19,905 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 31 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:04:19,905 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1375580932] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:04:19,905 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:04:19,905 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 19 [2022-02-15 13:04:19,905 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689804309] [2022-02-15 13:04:19,905 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:04:19,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-15 13:04:19,906 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:04:19,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-15 13:04:19,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=231, Unknown=0, NotChecked=0, Total=342 [2022-02-15 13:04:19,906 INFO L87 Difference]: Start difference. First operand 85080 states and 206952 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) [2022-02-15 13:04:21,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:04:21,330 INFO L93 Difference]: Finished difference Result 95032 states and 229951 transitions. [2022-02-15 13:04:21,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-02-15 13:04:21,330 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 [2022-02-15 13:04:21,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:04:21,576 INFO L225 Difference]: With dead ends: 95032 [2022-02-15 13:04:21,576 INFO L226 Difference]: Without dead ends: 95028 [2022-02-15 13:04:21,576 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1172 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1640, Invalid=3190, Unknown=0, NotChecked=0, Total=4830 [2022-02-15 13:04:21,576 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 242 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 680 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-15 13:04:21,577 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [242 Valid, 413 Invalid, 714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 680 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-15 13:04:21,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95028 states. [2022-02-15 13:04:23,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95028 to 86959. [2022-02-15 13:04:23,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86959 states, 86958 states have (on average 2.435647093999402) internal successors, (211799), 86958 states have internal predecessors, (211799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:04:23,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86959 states to 86959 states and 211799 transitions. [2022-02-15 13:04:23,997 INFO L78 Accepts]: Start accepts. Automaton has 86959 states and 211799 transitions. Word has length 39 [2022-02-15 13:04:23,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:04:23,998 INFO L470 AbstractCegarLoop]: Abstraction has 86959 states and 211799 transitions. [2022-02-15 13:04:23,998 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) [2022-02-15 13:04:23,998 INFO L276 IsEmpty]: Start isEmpty. Operand 86959 states and 211799 transitions. [2022-02-15 13:04:24,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-15 13:04:24,091 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:04:24,091 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:04:24,107 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Ended with exit code 0 [2022-02-15 13:04:24,291 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132,125 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:04:24,292 INFO L402 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:04:24,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:04:24,292 INFO L85 PathProgramCache]: Analyzing trace with hash -1867392592, now seen corresponding path program 121 times [2022-02-15 13:04:24,292 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:04:24,292 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76943901] [2022-02-15 13:04:24,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:04:24,292 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:04:24,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:04:24,361 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 31 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:04:24,361 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:04:24,362 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76943901] [2022-02-15 13:04:24,362 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76943901] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:04:24,362 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [944474447] [2022-02-15 13:04:24,362 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-15 13:04:24,362 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:04:24,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:04:24,364 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) [2022-02-15 13:04:24,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Waiting until timeout for monitored process [2022-02-15 13:04:24,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:04:24,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-15 13:04:24,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:04:24,509 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 35 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:04:24,509 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:04:24,570 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 31 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:04:24,570 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [944474447] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:04:24,570 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:04:24,570 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 19 [2022-02-15 13:04:24,570 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682004493] [2022-02-15 13:04:24,570 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:04:24,571 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-15 13:04:24,571 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:04:24,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-15 13:04:24,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2022-02-15 13:04:24,571 INFO L87 Difference]: Start difference. First operand 86959 states and 211799 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) [2022-02-15 13:04:26,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:04:26,208 INFO L93 Difference]: Finished difference Result 96305 states and 232642 transitions. [2022-02-15 13:04:26,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-02-15 13:04:26,208 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 [2022-02-15 13:04:26,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:04:26,465 INFO L225 Difference]: With dead ends: 96305 [2022-02-15 13:04:26,465 INFO L226 Difference]: Without dead ends: 96305 [2022-02-15 13:04:26,466 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1831 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=2216, Invalid=4426, Unknown=0, NotChecked=0, Total=6642 [2022-02-15 13:04:26,466 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 255 mSDsluCounter, 434 mSDsCounter, 0 mSdLazyCounter, 756 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 408 SdHoareTripleChecker+Invalid, 805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 756 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-15 13:04:26,466 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [255 Valid, 408 Invalid, 805 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 756 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-15 13:04:26,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96305 states. [2022-02-15 13:04:28,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96305 to 83214. [2022-02-15 13:04:28,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83214 states, 83213 states have (on average 2.4312667491858244) internal successors, (202313), 83213 states have internal predecessors, (202313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:04:28,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83214 states to 83214 states and 202313 transitions. [2022-02-15 13:04:28,846 INFO L78 Accepts]: Start accepts. Automaton has 83214 states and 202313 transitions. Word has length 39 [2022-02-15 13:04:28,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:04:28,846 INFO L470 AbstractCegarLoop]: Abstraction has 83214 states and 202313 transitions. [2022-02-15 13:04:28,846 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) [2022-02-15 13:04:28,846 INFO L276 IsEmpty]: Start isEmpty. Operand 83214 states and 202313 transitions. [2022-02-15 13:04:28,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-15 13:04:28,931 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:04:28,931 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:04:28,947 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Forceful destruction successful, exit code 0 [2022-02-15 13:04:29,132 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,SelfDestructingSolverStorable133 [2022-02-15 13:04:29,132 INFO L402 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:04:29,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:04:29,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1515665840, now seen corresponding path program 122 times [2022-02-15 13:04:29,133 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:04:29,133 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051330330] [2022-02-15 13:04:29,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:04:29,133 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:04:29,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:04:29,198 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 31 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:04:29,199 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:04:29,199 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051330330] [2022-02-15 13:04:29,199 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051330330] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:04:29,199 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [950651957] [2022-02-15 13:04:29,199 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-15 13:04:29,199 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:04:29,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:04:29,200 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) [2022-02-15 13:04:29,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (127)] Waiting until timeout for monitored process [2022-02-15 13:04:29,220 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-15 13:04:29,221 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 13:04:29,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-15 13:04:29,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:04:29,349 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 31 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:04:29,349 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:04:29,408 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 31 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:04:29,408 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [950651957] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:04:29,408 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:04:29,408 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 19 [2022-02-15 13:04:29,408 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238172266] [2022-02-15 13:04:29,408 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:04:29,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-15 13:04:29,408 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:04:29,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-15 13:04:29,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2022-02-15 13:04:29,409 INFO L87 Difference]: Start difference. First operand 83214 states and 202313 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) [2022-02-15 13:04:30,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:04:30,817 INFO L93 Difference]: Finished difference Result 112915 states and 270630 transitions. [2022-02-15 13:04:30,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-02-15 13:04:30,817 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 [2022-02-15 13:04:30,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:04:31,141 INFO L225 Difference]: With dead ends: 112915 [2022-02-15 13:04:31,141 INFO L226 Difference]: Without dead ends: 112909 [2022-02-15 13:04:31,141 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1225 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=978, Invalid=3054, Unknown=0, NotChecked=0, Total=4032 [2022-02-15 13:04:31,141 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 470 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 516 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 470 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-15 13:04:31,141 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [470 Valid, 279 Invalid, 633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 516 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-15 13:04:31,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112909 states. [2022-02-15 13:04:32,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112909 to 76444. [2022-02-15 13:04:33,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76444 states, 76443 states have (on average 2.4206402155854687) internal successors, (185041), 76443 states have internal predecessors, (185041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:04:33,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76444 states to 76444 states and 185041 transitions. [2022-02-15 13:04:33,216 INFO L78 Accepts]: Start accepts. Automaton has 76444 states and 185041 transitions. Word has length 39 [2022-02-15 13:04:33,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:04:33,216 INFO L470 AbstractCegarLoop]: Abstraction has 76444 states and 185041 transitions. [2022-02-15 13:04:33,216 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) [2022-02-15 13:04:33,216 INFO L276 IsEmpty]: Start isEmpty. Operand 76444 states and 185041 transitions. [2022-02-15 13:04:33,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-15 13:04:33,588 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:04:33,588 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:04:33,611 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (127)] Forceful destruction successful, exit code 0 [2022-02-15 13:04:33,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 127 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable134 [2022-02-15 13:04:33,811 INFO L402 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:04:33,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:04:33,811 INFO L85 PathProgramCache]: Analyzing trace with hash -2022012106, now seen corresponding path program 123 times [2022-02-15 13:04:33,812 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:04:33,812 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306527446] [2022-02-15 13:04:33,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:04:33,812 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:04:33,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:04:33,883 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 28 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:04:33,883 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:04:33,883 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306527446] [2022-02-15 13:04:33,883 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306527446] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:04:33,883 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2075534009] [2022-02-15 13:04:33,883 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-15 13:04:33,883 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:04:33,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:04:33,884 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) [2022-02-15 13:04:33,888 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (128)] Waiting until timeout for monitored process [2022-02-15 13:04:33,915 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-02-15 13:04:33,915 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 13:04:33,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-15 13:04:33,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:04:34,069 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 28 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:04:34,069 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:04:34,139 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 28 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:04:34,139 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2075534009] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:04:34,140 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:04:34,140 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 19 [2022-02-15 13:04:34,140 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041064829] [2022-02-15 13:04:34,140 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:04:34,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-15 13:04:34,140 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:04:34,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-15 13:04:34,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2022-02-15 13:04:34,140 INFO L87 Difference]: Start difference. First operand 76444 states and 185041 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) [2022-02-15 13:04:35,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:04:35,221 INFO L93 Difference]: Finished difference Result 107640 states and 257630 transitions. [2022-02-15 13:04:35,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-02-15 13:04:35,221 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 [2022-02-15 13:04:35,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:04:35,838 INFO L225 Difference]: With dead ends: 107640 [2022-02-15 13:04:35,838 INFO L226 Difference]: Without dead ends: 107616 [2022-02-15 13:04:35,838 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1117 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=851, Invalid=2809, Unknown=0, NotChecked=0, Total=3660 [2022-02-15 13:04:35,839 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 403 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 461 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 403 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-15 13:04:35,839 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [403 Valid, 258 Invalid, 570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 461 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-15 13:04:35,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107616 states. [2022-02-15 13:04:37,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107616 to 77070. [2022-02-15 13:04:37,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77070 states, 77069 states have (on average 2.4197148010224603) internal successors, (186485), 77069 states have internal predecessors, (186485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:04:37,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77070 states to 77070 states and 186485 transitions. [2022-02-15 13:04:37,896 INFO L78 Accepts]: Start accepts. Automaton has 77070 states and 186485 transitions. Word has length 39 [2022-02-15 13:04:37,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:04:37,896 INFO L470 AbstractCegarLoop]: Abstraction has 77070 states and 186485 transitions. [2022-02-15 13:04:37,897 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) [2022-02-15 13:04:37,897 INFO L276 IsEmpty]: Start isEmpty. Operand 77070 states and 186485 transitions. [2022-02-15 13:04:37,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-15 13:04:37,986 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:04:37,986 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:04:38,002 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (128)] Forceful destruction successful, exit code 0 [2022-02-15 13:04:38,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 128 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable135 [2022-02-15 13:04:38,187 INFO L402 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:04:38,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:04:38,187 INFO L85 PathProgramCache]: Analyzing trace with hash -280675948, now seen corresponding path program 124 times [2022-02-15 13:04:38,187 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:04:38,187 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853625716] [2022-02-15 13:04:38,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:04:38,187 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:04:38,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:04:38,244 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 22 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:04:38,244 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:04:38,244 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853625716] [2022-02-15 13:04:38,245 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853625716] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:04:38,245 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2058252212] [2022-02-15 13:04:38,245 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-15 13:04:38,245 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:04:38,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:04:38,246 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) [2022-02-15 13:04:38,247 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (129)] Waiting until timeout for monitored process [2022-02-15 13:04:38,266 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-15 13:04:38,266 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 13:04:38,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-15 13:04:38,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:04:38,394 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 22 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:04:38,394 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:04:38,453 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 22 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:04:38,453 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2058252212] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:04:38,453 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:04:38,453 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 19 [2022-02-15 13:04:38,453 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485100068] [2022-02-15 13:04:38,454 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:04:38,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-15 13:04:38,454 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:04:38,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-15 13:04:38,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2022-02-15 13:04:38,454 INFO L87 Difference]: Start difference. First operand 77070 states and 186485 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) [2022-02-15 13:04:39,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:04:39,729 INFO L93 Difference]: Finished difference Result 109601 states and 262473 transitions. [2022-02-15 13:04:39,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-02-15 13:04:39,729 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 [2022-02-15 13:04:39,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:04:40,027 INFO L225 Difference]: With dead ends: 109601 [2022-02-15 13:04:40,027 INFO L226 Difference]: Without dead ends: 109559 [2022-02-15 13:04:40,028 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1001 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=749, Invalid=2557, Unknown=0, NotChecked=0, Total=3306 [2022-02-15 13:04:40,028 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 390 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 390 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 13:04:40,028 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [390 Valid, 233 Invalid, 522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 13:04:40,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109559 states. [2022-02-15 13:04:41,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109559 to 77279. [2022-02-15 13:04:41,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77279 states, 77278 states have (on average 2.419705478920262) internal successors, (186990), 77278 states have internal predecessors, (186990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:04:42,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77279 states to 77279 states and 186990 transitions. [2022-02-15 13:04:42,050 INFO L78 Accepts]: Start accepts. Automaton has 77279 states and 186990 transitions. Word has length 39 [2022-02-15 13:04:42,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:04:42,050 INFO L470 AbstractCegarLoop]: Abstraction has 77279 states and 186990 transitions. [2022-02-15 13:04:42,050 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) [2022-02-15 13:04:42,050 INFO L276 IsEmpty]: Start isEmpty. Operand 77279 states and 186990 transitions. [2022-02-15 13:04:42,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-15 13:04:42,132 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:04:42,132 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:04:42,148 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (129)] Forceful destruction successful, exit code 0 [2022-02-15 13:04:42,333 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 129 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable136 [2022-02-15 13:04:42,333 INFO L402 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:04:42,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:04:42,333 INFO L85 PathProgramCache]: Analyzing trace with hash 1249805942, now seen corresponding path program 125 times [2022-02-15 13:04:42,333 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:04:42,333 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539891458] [2022-02-15 13:04:42,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:04:42,333 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:04:42,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:04:42,709 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 22 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:04:42,709 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:04:42,709 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539891458] [2022-02-15 13:04:42,710 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539891458] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:04:42,710 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [654747296] [2022-02-15 13:04:42,710 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-15 13:04:42,710 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:04:42,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:04:42,711 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) [2022-02-15 13:04:42,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (130)] Waiting until timeout for monitored process [2022-02-15 13:04:42,736 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-02-15 13:04:42,736 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 13:04:42,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-15 13:04:42,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:04:42,891 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 22 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:04:42,891 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:04:42,957 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 22 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:04:42,957 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [654747296] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:04:42,957 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:04:42,957 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 19 [2022-02-15 13:04:42,957 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270713728] [2022-02-15 13:04:42,957 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:04:42,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-15 13:04:42,957 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:04:42,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-15 13:04:42,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2022-02-15 13:04:42,958 INFO L87 Difference]: Start difference. First operand 77279 states and 186990 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) [2022-02-15 13:04:43,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:04:43,863 INFO L93 Difference]: Finished difference Result 111260 states and 266286 transitions. [2022-02-15 13:04:43,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-02-15 13:04:43,863 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 [2022-02-15 13:04:43,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:04:44,459 INFO L225 Difference]: With dead ends: 111260 [2022-02-15 13:04:44,459 INFO L226 Difference]: Without dead ends: 111200 [2022-02-15 13:04:44,459 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 875 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=673, Invalid=2297, Unknown=0, NotChecked=0, Total=2970 [2022-02-15 13:04:44,459 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 372 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 388 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 13:04:44,459 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [372 Valid, 222 Invalid, 480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 388 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 13:04:44,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111200 states. [2022-02-15 13:04:46,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111200 to 77575. [2022-02-15 13:04:46,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77575 states, 77574 states have (on average 2.4191739500348053) internal successors, (187665), 77574 states have internal predecessors, (187665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:04:46,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77575 states to 77575 states and 187665 transitions. [2022-02-15 13:04:46,582 INFO L78 Accepts]: Start accepts. Automaton has 77575 states and 187665 transitions. Word has length 39 [2022-02-15 13:04:46,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:04:46,582 INFO L470 AbstractCegarLoop]: Abstraction has 77575 states and 187665 transitions. [2022-02-15 13:04:46,582 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) [2022-02-15 13:04:46,582 INFO L276 IsEmpty]: Start isEmpty. Operand 77575 states and 187665 transitions. [2022-02-15 13:04:46,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-15 13:04:46,673 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:04:46,673 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:04:46,690 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (130)] Ended with exit code 0 [2022-02-15 13:04:46,874 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,SelfDestructingSolverStorable137 [2022-02-15 13:04:46,874 INFO L402 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:04:46,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:04:46,874 INFO L85 PathProgramCache]: Analyzing trace with hash 462976596, now seen corresponding path program 126 times [2022-02-15 13:04:46,874 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:04:46,874 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699362641] [2022-02-15 13:04:46,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:04:46,874 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:04:46,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:04:46,931 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 28 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:04:46,931 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:04:46,931 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699362641] [2022-02-15 13:04:46,931 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699362641] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:04:46,931 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [178763137] [2022-02-15 13:04:46,931 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-15 13:04:46,931 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:04:46,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:04:46,932 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) [2022-02-15 13:04:46,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (131)] Waiting until timeout for monitored process [2022-02-15 13:04:46,953 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-02-15 13:04:46,953 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 13:04:46,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-15 13:04:46,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:04:47,080 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 28 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:04:47,080 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:04:47,139 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 28 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:04:47,140 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [178763137] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:04:47,140 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:04:47,140 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 19 [2022-02-15 13:04:47,140 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61037268] [2022-02-15 13:04:47,140 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:04:47,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-15 13:04:47,140 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:04:47,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-15 13:04:47,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2022-02-15 13:04:47,140 INFO L87 Difference]: Start difference. First operand 77575 states and 187665 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) [2022-02-15 13:04:48,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:04:48,338 INFO L93 Difference]: Finished difference Result 105074 states and 251301 transitions. [2022-02-15 13:04:48,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-02-15 13:04:48,363 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 [2022-02-15 13:04:48,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:04:48,810 INFO L225 Difference]: With dead ends: 105074 [2022-02-15 13:04:48,810 INFO L226 Difference]: Without dead ends: 105035 [2022-02-15 13:04:48,810 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 482 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=455, Invalid=1437, Unknown=0, NotChecked=0, Total=1892 [2022-02-15 13:04:48,810 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 240 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:04:48,810 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [240 Valid, 161 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 13:04:48,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105035 states.