/usr/bin/java -Xmx16000000000 -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/weaver-benchmarks/generated/bench/exp3x3-opt.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bc79526 [2022-01-18 04:38:13,735 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-18 04:38:13,736 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-18 04:38:13,775 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-18 04:38:13,775 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-18 04:38:13,776 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-18 04:38:13,777 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-18 04:38:13,778 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-18 04:38:13,779 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-18 04:38:13,779 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-18 04:38:13,780 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-18 04:38:13,780 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-18 04:38:13,780 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-18 04:38:13,781 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-18 04:38:13,782 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-18 04:38:13,782 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-18 04:38:13,783 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-18 04:38:13,783 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-18 04:38:13,785 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-18 04:38:13,786 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-18 04:38:13,787 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-18 04:38:13,796 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-18 04:38:13,798 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-18 04:38:13,799 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-18 04:38:13,802 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-18 04:38:13,802 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-18 04:38:13,803 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-18 04:38:13,803 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-18 04:38:13,803 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-18 04:38:13,804 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2022-01-18 04:38:13,807 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-18 04:38:13,807 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-18 04:38:13,807 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-18 04:38:13,813 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 [2022-01-18 04:38:13,837 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-18 04:38:13,838 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-18 04:38:13,838 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-18 04:38:13,838 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-18 04:38:13,839 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-18 04:38:13,839 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-18 04:38:13,839 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-18 04:38:13,839 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-18 04:38:13,839 INFO L138 SettingsManager]: * Use SBE=true [2022-01-18 04:38:13,839 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-18 04:38:13,840 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-18 04:38:13,840 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-18 04:38:13,840 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-18 04:38:13,840 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-18 04:38:13,840 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-18 04:38:13,840 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-18 04:38:13,840 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-18 04:38:13,840 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-18 04:38:13,840 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-18 04:38:13,840 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-18 04:38:13,841 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-18 04:38:13,841 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-18 04:38:13,841 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-18 04:38:13,841 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-18 04:38:13,842 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-18 04:38:13,842 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 04:38:13,842 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-18 04:38:13,842 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-18 04:38:13,842 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-18 04:38:13,842 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-18 04:38:13,842 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-18 04:38:13,842 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-18 04:38:13,842 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-18 04:38:13,843 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-18 04:38:13,990 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-18 04:38:14,008 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-18 04:38:14,011 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-18 04:38:14,011 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-01-18 04:38:14,012 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-01-18 04:38:14,013 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/bench/exp3x3-opt.wvr.bpl [2022-01-18 04:38:14,013 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/bench/exp3x3-opt.wvr.bpl' [2022-01-18 04:38:14,031 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-18 04:38:14,032 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-18 04:38:14,033 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-18 04:38:14,033 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-18 04:38:14,033 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-18 04:38:14,041 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "exp3x3-opt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 04:38:14" (1/1) ... [2022-01-18 04:38:14,045 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "exp3x3-opt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 04:38:14" (1/1) ... [2022-01-18 04:38:14,049 INFO L137 Inliner]: procedures = 7, calls = 6, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-01-18 04:38:14,050 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-18 04:38:14,051 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-18 04:38:14,051 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-18 04:38:14,051 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-18 04:38:14,055 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "exp3x3-opt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 04:38:14" (1/1) ... [2022-01-18 04:38:14,056 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "exp3x3-opt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 04:38:14" (1/1) ... [2022-01-18 04:38:14,056 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "exp3x3-opt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 04:38:14" (1/1) ... [2022-01-18 04:38:14,056 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "exp3x3-opt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 04:38:14" (1/1) ... [2022-01-18 04:38:14,058 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "exp3x3-opt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 04:38:14" (1/1) ... [2022-01-18 04:38:14,061 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "exp3x3-opt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 04:38:14" (1/1) ... [2022-01-18 04:38:14,061 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "exp3x3-opt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 04:38:14" (1/1) ... [2022-01-18 04:38:14,062 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-18 04:38:14,063 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-18 04:38:14,063 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-18 04:38:14,063 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-18 04:38:14,063 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "exp3x3-opt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 04:38:14" (1/1) ... [2022-01-18 04:38:14,068 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 04:38:14,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:38:14,091 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) [2022-01-18 04:38:14,098 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 [2022-01-18 04:38:14,123 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2022-01-18 04:38:14,123 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-01-18 04:38:14,123 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-01-18 04:38:14,124 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2022-01-18 04:38:14,124 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-01-18 04:38:14,124 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-01-18 04:38:14,124 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-01-18 04:38:14,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-18 04:38:14,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-18 04:38:14,124 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2022-01-18 04:38:14,124 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-01-18 04:38:14,125 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-01-18 04:38:14,125 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2022-01-18 04:38:14,125 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-01-18 04:38:14,125 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-01-18 04:38:14,125 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread5 given in one single declaration [2022-01-18 04:38:14,125 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2022-01-18 04:38:14,125 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2022-01-18 04:38:14,126 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread6 given in one single declaration [2022-01-18 04:38:14,126 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2022-01-18 04:38:14,126 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2022-01-18 04:38:14,127 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-18 04:38:14,157 INFO L234 CfgBuilder]: Building ICFG [2022-01-18 04:38:14,158 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-18 04:38:14,272 INFO L275 CfgBuilder]: Performing block encoding [2022-01-18 04:38:14,307 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-18 04:38:14,307 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2022-01-18 04:38:14,308 WARN L329 CfgBuilder]: Unexpected successor node of atomic block begin: thread1EXIT is neither atomic block end nor error location. [2022-01-18 04:38:14,308 WARN L329 CfgBuilder]: Unexpected successor node of atomic block begin: thread2EXIT is neither atomic block end nor error location. [2022-01-18 04:38:14,309 WARN L329 CfgBuilder]: Unexpected successor node of atomic block begin: thread3EXIT is neither atomic block end nor error location. [2022-01-18 04:38:14,309 WARN L329 CfgBuilder]: Unexpected successor node of atomic block begin: thread4EXIT is neither atomic block end nor error location. [2022-01-18 04:38:14,309 WARN L329 CfgBuilder]: Unexpected successor node of atomic block begin: thread5EXIT is neither atomic block end nor error location. [2022-01-18 04:38:14,309 WARN L329 CfgBuilder]: Unexpected successor node of atomic block begin: thread6EXIT is neither atomic block end nor error location. [2022-01-18 04:38:14,310 INFO L202 PluginConnector]: Adding new model exp3x3-opt.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 04:38:14 BoogieIcfgContainer [2022-01-18 04:38:14,310 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-18 04:38:14,316 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-18 04:38:14,316 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-18 04:38:14,333 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-18 04:38:14,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "exp3x3-opt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 04:38:14" (1/2) ... [2022-01-18 04:38:14,334 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25f5928c and model type exp3x3-opt.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 04:38:14, skipping insertion in model container [2022-01-18 04:38:14,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "exp3x3-opt.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 04:38:14" (2/2) ... [2022-01-18 04:38:14,335 INFO L111 eAbstractionObserver]: Analyzing ICFG exp3x3-opt.wvr.bpl [2022-01-18 04:38:14,338 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-01-18 04:38:14,338 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-18 04:38:14,338 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-18 04:38:14,338 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-18 04:38:14,400 INFO L148 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2022-01-18 04:38:14,449 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-18 04:38:14,455 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, 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 [2022-01-18 04:38:14,456 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-01-18 04:38:14,468 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 48 places, 35 transitions, 118 flow [2022-01-18 04:38:14,525 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 193 states, 192 states have (on average 5.359375) internal successors, (1029), 192 states have internal predecessors, (1029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:38:14,530 INFO L276 IsEmpty]: Start isEmpty. Operand has 193 states, 192 states have (on average 5.359375) internal successors, (1029), 192 states have internal predecessors, (1029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:38:14,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 04:38:14,542 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:38:14,542 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:38:14,543 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-18 04:38:14,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:38:14,547 INFO L85 PathProgramCache]: Analyzing trace with hash -931305045, now seen corresponding path program 1 times [2022-01-18 04:38:14,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:38:14,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723021743] [2022-01-18 04:38:14,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:38:14,553 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:38:14,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:38:14,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:38:14,659 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:38:14,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723021743] [2022-01-18 04:38:14,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723021743] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 04:38:14,660 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 04:38:14,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-18 04:38:14,662 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9347936] [2022-01-18 04:38:14,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 04:38:14,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-18 04:38:14,665 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:38:14,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-18 04:38:14,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 04:38:14,683 INFO L87 Difference]: Start difference. First operand has 193 states, 192 states have (on average 5.359375) internal successors, (1029), 192 states have internal predecessors, (1029), 0 states have call successors, (0), 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, 3 states have (on average 7.0) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:38:14,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:38:14,733 INFO L93 Difference]: Finished difference Result 352 states and 1926 transitions. [2022-01-18 04:38:14,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-18 04:38:14,735 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have 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 [2022-01-18 04:38:14,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:38:14,745 INFO L225 Difference]: With dead ends: 352 [2022-01-18 04:38:14,745 INFO L226 Difference]: Without dead ends: 319 [2022-01-18 04:38:14,746 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 04:38:14,749 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 4 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 04:38:14,749 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 16 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 04:38:14,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2022-01-18 04:38:14,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 319. [2022-01-18 04:38:14,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 318 states have (on average 5.49685534591195) internal successors, (1748), 318 states have internal predecessors, (1748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:38:14,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 1748 transitions. [2022-01-18 04:38:14,820 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 1748 transitions. Word has length 21 [2022-01-18 04:38:14,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:38:14,821 INFO L470 AbstractCegarLoop]: Abstraction has 319 states and 1748 transitions. [2022-01-18 04:38:14,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:38:14,821 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 1748 transitions. [2022-01-18 04:38:14,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-01-18 04:38:14,824 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:38:14,824 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:38:14,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-18 04:38:14,825 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-18 04:38:14,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:38:14,825 INFO L85 PathProgramCache]: Analyzing trace with hash -976021450, now seen corresponding path program 1 times [2022-01-18 04:38:14,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:38:14,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395704034] [2022-01-18 04:38:14,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:38:14,826 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:38:14,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:38:14,856 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:38:14,857 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:38:14,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395704034] [2022-01-18 04:38:14,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395704034] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 04:38:14,857 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 04:38:14,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-18 04:38:14,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782369863] [2022-01-18 04:38:14,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 04:38:14,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-18 04:38:14,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:38:14,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-18 04:38:14,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 04:38:14,859 INFO L87 Difference]: Start difference. First operand 319 states and 1748 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 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) [2022-01-18 04:38:14,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:38:14,923 INFO L93 Difference]: Finished difference Result 628 states and 3476 transitions. [2022-01-18 04:38:14,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-18 04:38:14,924 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 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 22 [2022-01-18 04:38:14,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:38:14,932 INFO L225 Difference]: With dead ends: 628 [2022-01-18 04:38:14,932 INFO L226 Difference]: Without dead ends: 541 [2022-01-18 04:38:14,934 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 04:38:14,935 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 3 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 04:38:14,936 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 16 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 04:38:14,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2022-01-18 04:38:14,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 541. [2022-01-18 04:38:14,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 541 states, 540 states have (on average 5.587037037037037) internal successors, (3017), 540 states have internal predecessors, (3017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:38:14,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 3017 transitions. [2022-01-18 04:38:14,975 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 3017 transitions. Word has length 22 [2022-01-18 04:38:14,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:38:14,975 INFO L470 AbstractCegarLoop]: Abstraction has 541 states and 3017 transitions. [2022-01-18 04:38:14,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 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) [2022-01-18 04:38:14,975 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 3017 transitions. [2022-01-18 04:38:14,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-18 04:38:14,979 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:38:14,980 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:38:14,980 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-18 04:38:14,980 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-18 04:38:14,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:38:14,981 INFO L85 PathProgramCache]: Analyzing trace with hash 93496637, now seen corresponding path program 1 times [2022-01-18 04:38:14,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:38:14,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770383668] [2022-01-18 04:38:14,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:38:14,981 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:38:14,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:38:15,040 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 04:38:15,041 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:38:15,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770383668] [2022-01-18 04:38:15,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770383668] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 04:38:15,041 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 04:38:15,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-18 04:38:15,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46529897] [2022-01-18 04:38:15,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 04:38:15,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-18 04:38:15,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:38:15,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-18 04:38:15,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 04:38:15,042 INFO L87 Difference]: Start difference. First operand 541 states and 3017 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:38:15,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:38:15,092 INFO L93 Difference]: Finished difference Result 1078 states and 6030 transitions. [2022-01-18 04:38:15,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-18 04:38:15,093 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-01-18 04:38:15,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:38:15,101 INFO L225 Difference]: With dead ends: 1078 [2022-01-18 04:38:15,101 INFO L226 Difference]: Without dead ends: 859 [2022-01-18 04:38:15,103 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 04:38:15,106 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 2 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 04:38:15,108 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 16 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 04:38:15,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2022-01-18 04:38:15,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 859. [2022-01-18 04:38:15,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 859 states, 858 states have (on average 5.6678321678321675) internal successors, (4863), 858 states have internal predecessors, (4863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:38:15,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 859 states to 859 states and 4863 transitions. [2022-01-18 04:38:15,146 INFO L78 Accepts]: Start accepts. Automaton has 859 states and 4863 transitions. Word has length 23 [2022-01-18 04:38:15,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:38:15,146 INFO L470 AbstractCegarLoop]: Abstraction has 859 states and 4863 transitions. [2022-01-18 04:38:15,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:38:15,146 INFO L276 IsEmpty]: Start isEmpty. Operand 859 states and 4863 transitions. [2022-01-18 04:38:15,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-01-18 04:38:15,150 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:38:15,150 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:38:15,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-18 04:38:15,151 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-18 04:38:15,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:38:15,152 INFO L85 PathProgramCache]: Analyzing trace with hash 1806147054, now seen corresponding path program 1 times [2022-01-18 04:38:15,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:38:15,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869298617] [2022-01-18 04:38:15,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:38:15,152 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:38:15,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:38:15,207 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 04:38:15,208 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:38:15,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869298617] [2022-01-18 04:38:15,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869298617] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:38:15,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [647729781] [2022-01-18 04:38:15,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:38:15,208 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:38:15,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:38:15,210 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) [2022-01-18 04:38:15,215 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-18 04:38:15,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:38:15,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-18 04:38:15,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:38:15,333 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 04:38:15,333 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:38:15,403 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 04:38:15,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [647729781] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:38:15,404 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:38:15,404 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2022-01-18 04:38:15,404 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275613269] [2022-01-18 04:38:15,404 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:38:15,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 04:38:15,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:38:15,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 04:38:15,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-18 04:38:15,408 INFO L87 Difference]: Start difference. First operand 859 states and 4863 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 5 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) [2022-01-18 04:38:15,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:38:15,580 INFO L93 Difference]: Finished difference Result 1936 states and 10970 transitions. [2022-01-18 04:38:15,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-18 04:38:15,580 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 5 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 24 [2022-01-18 04:38:15,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:38:15,587 INFO L225 Difference]: With dead ends: 1936 [2022-01-18 04:38:15,587 INFO L226 Difference]: Without dead ends: 922 [2022-01-18 04:38:15,588 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-01-18 04:38:15,589 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 64 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 04:38:15,590 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 103 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 04:38:15,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 922 states. [2022-01-18 04:38:15,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 922 to 610. [2022-01-18 04:38:15,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 610 states, 609 states have (on average 5.600985221674877) internal successors, (3411), 609 states have internal predecessors, (3411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:38:15,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 3411 transitions. [2022-01-18 04:38:15,611 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 3411 transitions. Word has length 24 [2022-01-18 04:38:15,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:38:15,611 INFO L470 AbstractCegarLoop]: Abstraction has 610 states and 3411 transitions. [2022-01-18 04:38:15,611 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 5 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) [2022-01-18 04:38:15,612 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 3411 transitions. [2022-01-18 04:38:15,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-01-18 04:38:15,614 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:38:15,614 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:38:15,635 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-18 04:38:15,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:38:15,831 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-18 04:38:15,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:38:15,832 INFO L85 PathProgramCache]: Analyzing trace with hash 860655352, now seen corresponding path program 1 times [2022-01-18 04:38:15,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:38:15,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138928761] [2022-01-18 04:38:15,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:38:15,832 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:38:15,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:38:15,877 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 04:38:15,878 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:38:15,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138928761] [2022-01-18 04:38:15,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138928761] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:38:15,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [815690829] [2022-01-18 04:38:15,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:38:15,878 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:38:15,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:38:15,879 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) [2022-01-18 04:38:15,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-18 04:38:15,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:38:15,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-18 04:38:15,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:38:15,980 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 04:38:15,980 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:38:16,017 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 04:38:16,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [815690829] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:38:16,018 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:38:16,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2022-01-18 04:38:16,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418396522] [2022-01-18 04:38:16,018 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:38:16,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 04:38:16,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:38:16,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 04:38:16,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-18 04:38:16,019 INFO L87 Difference]: Start difference. First operand 610 states and 3411 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 5 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) [2022-01-18 04:38:16,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:38:16,141 INFO L93 Difference]: Finished difference Result 2023 states and 11454 transitions. [2022-01-18 04:38:16,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-18 04:38:16,141 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 5 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 24 [2022-01-18 04:38:16,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:38:16,149 INFO L225 Difference]: With dead ends: 2023 [2022-01-18 04:38:16,149 INFO L226 Difference]: Without dead ends: 1163 [2022-01-18 04:38:16,152 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-01-18 04:38:16,152 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 77 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 04:38:16,153 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 71 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 04:38:16,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1163 states. [2022-01-18 04:38:16,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1163 to 1163. [2022-01-18 04:38:16,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1163 states, 1162 states have (on average 5.699655765920826) internal successors, (6623), 1162 states have internal predecessors, (6623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:38:16,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1163 states to 1163 states and 6623 transitions. [2022-01-18 04:38:16,184 INFO L78 Accepts]: Start accepts. Automaton has 1163 states and 6623 transitions. Word has length 24 [2022-01-18 04:38:16,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:38:16,184 INFO L470 AbstractCegarLoop]: Abstraction has 1163 states and 6623 transitions. [2022-01-18 04:38:16,184 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 5 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) [2022-01-18 04:38:16,184 INFO L276 IsEmpty]: Start isEmpty. Operand 1163 states and 6623 transitions. [2022-01-18 04:38:16,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 04:38:16,188 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:38:16,188 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:38:16,207 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-18 04:38:16,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:38:16,403 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-18 04:38:16,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:38:16,404 INFO L85 PathProgramCache]: Analyzing trace with hash -103790194, now seen corresponding path program 1 times [2022-01-18 04:38:16,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:38:16,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664220071] [2022-01-18 04:38:16,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:38:16,404 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:38:16,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:38:16,438 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-18 04:38:16,438 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:38:16,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664220071] [2022-01-18 04:38:16,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664220071] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:38:16,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1439907347] [2022-01-18 04:38:16,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:38:16,438 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:38:16,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:38:16,439 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) [2022-01-18 04:38:16,476 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-18 04:38:16,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:38:16,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-18 04:38:16,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:38:16,528 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-18 04:38:16,528 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:38:16,580 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-18 04:38:16,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1439907347] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:38:16,580 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:38:16,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2022-01-18 04:38:16,581 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136260736] [2022-01-18 04:38:16,581 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:38:16,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 04:38:16,582 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:38:16,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 04:38:16,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-18 04:38:16,583 INFO L87 Difference]: Start difference. First operand 1163 states and 6623 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 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) [2022-01-18 04:38:16,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:38:16,639 INFO L93 Difference]: Finished difference Result 1806 states and 10329 transitions. [2022-01-18 04:38:16,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-18 04:38:16,639 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 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 26 [2022-01-18 04:38:16,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:38:16,648 INFO L225 Difference]: With dead ends: 1806 [2022-01-18 04:38:16,648 INFO L226 Difference]: Without dead ends: 1298 [2022-01-18 04:38:16,648 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 48 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-18 04:38:16,649 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 16 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 04:38:16,650 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 48 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 04:38:16,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1298 states. [2022-01-18 04:38:16,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1298 to 992. [2022-01-18 04:38:16,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 992 states, 991 states have (on average 5.702320887991927) internal successors, (5651), 991 states have internal predecessors, (5651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:38:16,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 992 states to 992 states and 5651 transitions. [2022-01-18 04:38:16,681 INFO L78 Accepts]: Start accepts. Automaton has 992 states and 5651 transitions. Word has length 26 [2022-01-18 04:38:16,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:38:16,682 INFO L470 AbstractCegarLoop]: Abstraction has 992 states and 5651 transitions. [2022-01-18 04:38:16,682 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 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) [2022-01-18 04:38:16,682 INFO L276 IsEmpty]: Start isEmpty. Operand 992 states and 5651 transitions. [2022-01-18 04:38:16,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 04:38:16,686 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:38:16,686 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:38:16,705 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-18 04:38:16,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:38:16,900 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-18 04:38:16,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:38:16,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1915665608, now seen corresponding path program 1 times [2022-01-18 04:38:16,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:38:16,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099065390] [2022-01-18 04:38:16,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:38:16,900 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:38:16,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:38:16,924 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-18 04:38:16,924 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:38:16,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099065390] [2022-01-18 04:38:16,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099065390] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:38:16,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1281415300] [2022-01-18 04:38:16,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:38:16,925 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:38:16,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:38:16,926 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) [2022-01-18 04:38:16,927 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-18 04:38:16,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:38:16,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-18 04:38:16,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:38:17,005 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-18 04:38:17,006 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:38:17,060 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-18 04:38:17,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1281415300] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:38:17,060 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:38:17,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2022-01-18 04:38:17,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876552992] [2022-01-18 04:38:17,060 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:38:17,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 04:38:17,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:38:17,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 04:38:17,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-18 04:38:17,061 INFO L87 Difference]: Start difference. First operand 992 states and 5651 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 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) [2022-01-18 04:38:17,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:38:17,111 INFO L93 Difference]: Finished difference Result 1941 states and 11157 transitions. [2022-01-18 04:38:17,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-18 04:38:17,113 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 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 26 [2022-01-18 04:38:17,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:38:17,125 INFO L225 Difference]: With dead ends: 1941 [2022-01-18 04:38:17,128 INFO L226 Difference]: Without dead ends: 1460 [2022-01-18 04:38:17,128 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 48 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-18 04:38:17,129 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 15 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 04:38:17,130 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 35 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 04:38:17,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1460 states. [2022-01-18 04:38:17,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1460 to 1460. [2022-01-18 04:38:17,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1460 states, 1459 states have (on average 5.748457847840987) internal successors, (8387), 1459 states have internal predecessors, (8387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:38:17,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1460 states to 1460 states and 8387 transitions. [2022-01-18 04:38:17,169 INFO L78 Accepts]: Start accepts. Automaton has 1460 states and 8387 transitions. Word has length 26 [2022-01-18 04:38:17,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:38:17,169 INFO L470 AbstractCegarLoop]: Abstraction has 1460 states and 8387 transitions. [2022-01-18 04:38:17,169 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 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) [2022-01-18 04:38:17,169 INFO L276 IsEmpty]: Start isEmpty. Operand 1460 states and 8387 transitions. [2022-01-18 04:38:17,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-18 04:38:17,173 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:38:17,173 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:38:17,191 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-18 04:38:17,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:38:17,392 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-18 04:38:17,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:38:17,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1029298811, now seen corresponding path program 1 times [2022-01-18 04:38:17,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:38:17,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281981403] [2022-01-18 04:38:17,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:38:17,393 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:38:17,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:38:17,443 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-18 04:38:17,443 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:38:17,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281981403] [2022-01-18 04:38:17,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281981403] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:38:17,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [441832642] [2022-01-18 04:38:17,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:38:17,444 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:38:17,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:38:17,445 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) [2022-01-18 04:38:17,446 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-18 04:38:17,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:38:17,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 04:38:17,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:38:17,638 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-18 04:38:17,638 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:38:17,677 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-18 04:38:17,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [441832642] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:38:17,677 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:38:17,677 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 3] total 6 [2022-01-18 04:38:17,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776702766] [2022-01-18 04:38:17,677 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:38:17,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 04:38:17,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:38:17,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 04:38:17,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-18 04:38:17,678 INFO L87 Difference]: Start difference. First operand 1460 states and 8387 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:38:17,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:38:17,882 INFO L93 Difference]: Finished difference Result 6508 states and 37469 transitions. [2022-01-18 04:38:17,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-18 04:38:17,883 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have 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 [2022-01-18 04:38:17,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:38:17,916 INFO L225 Difference]: With dead ends: 6508 [2022-01-18 04:38:17,916 INFO L226 Difference]: Without dead ends: 5595 [2022-01-18 04:38:17,917 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 49 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2022-01-18 04:38:17,917 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 93 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 04:38:17,917 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [93 Valid, 148 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 04:38:17,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5595 states. [2022-01-18 04:38:18,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5595 to 3403. [2022-01-18 04:38:18,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3403 states, 3402 states have (on average 6.304526748971194) internal successors, (21448), 3402 states have internal predecessors, (21448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:38:18,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3403 states to 3403 states and 21448 transitions. [2022-01-18 04:38:18,039 INFO L78 Accepts]: Start accepts. Automaton has 3403 states and 21448 transitions. Word has length 27 [2022-01-18 04:38:18,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:38:18,040 INFO L470 AbstractCegarLoop]: Abstraction has 3403 states and 21448 transitions. [2022-01-18 04:38:18,040 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:38:18,040 INFO L276 IsEmpty]: Start isEmpty. Operand 3403 states and 21448 transitions. [2022-01-18 04:38:18,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-18 04:38:18,051 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:38:18,051 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:38:18,067 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-01-18 04:38:18,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:38:18,266 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-18 04:38:18,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:38:18,266 INFO L85 PathProgramCache]: Analyzing trace with hash 460516603, now seen corresponding path program 2 times [2022-01-18 04:38:18,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:38:18,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401362053] [2022-01-18 04:38:18,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:38:18,267 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:38:18,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:38:18,311 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-18 04:38:18,311 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:38:18,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401362053] [2022-01-18 04:38:18,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401362053] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:38:18,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621482175] [2022-01-18 04:38:18,311 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 04:38:18,312 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:38:18,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:38:18,313 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) [2022-01-18 04:38:18,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-18 04:38:18,345 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 04:38:18,345 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:38:18,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 04:38:18,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:38:18,417 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-18 04:38:18,418 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:38:18,452 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-18 04:38:18,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1621482175] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:38:18,452 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:38:18,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 3] total 6 [2022-01-18 04:38:18,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481523136] [2022-01-18 04:38:18,452 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:38:18,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 04:38:18,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:38:18,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 04:38:18,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-18 04:38:18,453 INFO L87 Difference]: Start difference. First operand 3403 states and 21448 transitions. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:38:18,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:38:18,772 INFO L93 Difference]: Finished difference Result 11115 states and 69290 transitions. [2022-01-18 04:38:18,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-18 04:38:18,772 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have 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 [2022-01-18 04:38:18,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:38:18,896 INFO L225 Difference]: With dead ends: 11115 [2022-01-18 04:38:18,896 INFO L226 Difference]: Without dead ends: 10118 [2022-01-18 04:38:18,896 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 49 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2022-01-18 04:38:18,897 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 98 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 04:38:18,897 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 159 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 04:38:18,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10118 states. [2022-01-18 04:38:19,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10118 to 6709. [2022-01-18 04:38:19,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6709 states, 6708 states have (on average 6.731067382230173) internal successors, (45152), 6708 states have internal predecessors, (45152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:38:19,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6709 states to 6709 states and 45152 transitions. [2022-01-18 04:38:19,191 INFO L78 Accepts]: Start accepts. Automaton has 6709 states and 45152 transitions. Word has length 27 [2022-01-18 04:38:19,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:38:19,194 INFO L470 AbstractCegarLoop]: Abstraction has 6709 states and 45152 transitions. [2022-01-18 04:38:19,195 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:38:19,195 INFO L276 IsEmpty]: Start isEmpty. Operand 6709 states and 45152 transitions. [2022-01-18 04:38:19,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 04:38:19,218 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:38:19,218 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:38:19,235 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-01-18 04:38:19,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:38:19,436 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-18 04:38:19,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:38:19,436 INFO L85 PathProgramCache]: Analyzing trace with hash -90777990, now seen corresponding path program 3 times [2022-01-18 04:38:19,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:38:19,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808976998] [2022-01-18 04:38:19,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:38:19,436 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:38:19,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:38:19,462 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-18 04:38:19,463 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:38:19,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808976998] [2022-01-18 04:38:19,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808976998] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:38:19,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1624513065] [2022-01-18 04:38:19,463 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 04:38:19,463 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:38:19,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:38:19,464 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) [2022-01-18 04:38:19,465 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-01-18 04:38:19,566 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 04:38:19,566 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:38:19,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-18 04:38:19,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:38:19,655 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-18 04:38:19,655 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:38:19,697 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-18 04:38:19,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1624513065] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:38:19,698 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:38:19,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 7 [2022-01-18 04:38:19,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431259052] [2022-01-18 04:38:19,698 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:38:19,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 04:38:19,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:38:19,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 04:38:19,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-18 04:38:19,699 INFO L87 Difference]: Start difference. First operand 6709 states and 45152 transitions. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:38:19,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:38:19,924 INFO L93 Difference]: Finished difference Result 9291 states and 60293 transitions. [2022-01-18 04:38:19,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 04:38:19,924 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-18 04:38:19,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:38:19,966 INFO L225 Difference]: With dead ends: 9291 [2022-01-18 04:38:19,967 INFO L226 Difference]: Without dead ends: 7946 [2022-01-18 04:38:19,967 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 50 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-18 04:38:19,967 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 64 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 04:38:19,967 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 125 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 04:38:19,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7946 states. [2022-01-18 04:38:20,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7946 to 6226. [2022-01-18 04:38:20,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6226 states, 6225 states have (on average 6.658473895582329) internal successors, (41449), 6225 states have internal predecessors, (41449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:38:20,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6226 states to 6226 states and 41449 transitions. [2022-01-18 04:38:20,315 INFO L78 Accepts]: Start accepts. Automaton has 6226 states and 41449 transitions. Word has length 28 [2022-01-18 04:38:20,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:38:20,315 INFO L470 AbstractCegarLoop]: Abstraction has 6226 states and 41449 transitions. [2022-01-18 04:38:20,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:38:20,316 INFO L276 IsEmpty]: Start isEmpty. Operand 6226 states and 41449 transitions. [2022-01-18 04:38:20,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 04:38:20,337 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:38:20,337 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:38:20,353 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-01-18 04:38:20,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:38:20,555 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-18 04:38:20,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:38:20,556 INFO L85 PathProgramCache]: Analyzing trace with hash 292327756, now seen corresponding path program 4 times [2022-01-18 04:38:20,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:38:20,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905141596] [2022-01-18 04:38:20,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:38:20,556 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:38:20,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:38:20,590 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-18 04:38:20,590 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:38:20,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905141596] [2022-01-18 04:38:20,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905141596] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:38:20,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [713428636] [2022-01-18 04:38:20,590 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 04:38:20,590 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:38:20,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:38:20,591 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) [2022-01-18 04:38:20,592 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-01-18 04:38:20,623 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 04:38:20,624 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:38:20,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-18 04:38:20,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:38:20,688 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-18 04:38:20,689 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:38:20,732 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-18 04:38:20,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [713428636] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:38:20,732 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:38:20,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2022-01-18 04:38:20,733 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096922378] [2022-01-18 04:38:20,733 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:38:20,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 04:38:20,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:38:20,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 04:38:20,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-18 04:38:20,734 INFO L87 Difference]: Start difference. First operand 6226 states and 41449 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 7 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) [2022-01-18 04:38:20,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:38:20,914 INFO L93 Difference]: Finished difference Result 9667 states and 62399 transitions. [2022-01-18 04:38:20,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 04:38:20,915 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 7 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 28 [2022-01-18 04:38:20,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:38:20,951 INFO L225 Difference]: With dead ends: 9667 [2022-01-18 04:38:20,951 INFO L226 Difference]: Without dead ends: 7372 [2022-01-18 04:38:20,951 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 49 SyntacticMatches, 4 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-01-18 04:38:20,952 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 82 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 04:38:20,952 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 131 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 04:38:21,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7372 states. [2022-01-18 04:38:21,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7372 to 6226. [2022-01-18 04:38:21,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6226 states, 6225 states have (on average 6.566586345381526) internal successors, (40877), 6225 states have internal predecessors, (40877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:38:21,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6226 states to 6226 states and 40877 transitions. [2022-01-18 04:38:21,232 INFO L78 Accepts]: Start accepts. Automaton has 6226 states and 40877 transitions. Word has length 28 [2022-01-18 04:38:21,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:38:21,233 INFO L470 AbstractCegarLoop]: Abstraction has 6226 states and 40877 transitions. [2022-01-18 04:38:21,233 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 7 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) [2022-01-18 04:38:21,233 INFO L276 IsEmpty]: Start isEmpty. Operand 6226 states and 40877 transitions. [2022-01-18 04:38:21,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 04:38:21,331 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:38:21,331 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:38:21,349 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-01-18 04:38:21,539 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,SelfDestructingSolverStorable10 [2022-01-18 04:38:21,539 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-18 04:38:21,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:38:21,540 INFO L85 PathProgramCache]: Analyzing trace with hash -1127701574, now seen corresponding path program 5 times [2022-01-18 04:38:21,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:38:21,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030868693] [2022-01-18 04:38:21,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:38:21,540 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:38:21,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:38:21,569 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-18 04:38:21,569 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:38:21,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030868693] [2022-01-18 04:38:21,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030868693] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:38:21,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1266037208] [2022-01-18 04:38:21,570 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 04:38:21,570 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:38:21,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:38:21,571 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) [2022-01-18 04:38:21,599 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-01-18 04:38:21,605 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 04:38:21,605 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:38:21,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-18 04:38:21,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:38:21,678 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-18 04:38:21,678 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:38:21,727 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-18 04:38:21,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1266037208] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:38:21,728 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:38:21,728 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 7 [2022-01-18 04:38:21,728 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243220263] [2022-01-18 04:38:21,728 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:38:21,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 04:38:21,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:38:21,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 04:38:21,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-18 04:38:21,729 INFO L87 Difference]: Start difference. First operand 6226 states and 40877 transitions. Second operand has 8 states, 8 states have (on average 6.875) internal successors, (55), 7 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) [2022-01-18 04:38:21,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:38:21,897 INFO L93 Difference]: Finished difference Result 9093 states and 58145 transitions. [2022-01-18 04:38:21,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 04:38:21,897 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 7 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 28 [2022-01-18 04:38:21,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:38:21,930 INFO L225 Difference]: With dead ends: 9093 [2022-01-18 04:38:21,930 INFO L226 Difference]: Without dead ends: 7656 [2022-01-18 04:38:21,930 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 50 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-01-18 04:38:21,931 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 80 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 04:38:21,931 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 92 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 04:38:21,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7656 states. [2022-01-18 04:38:22,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7656 to 5654. [2022-01-18 04:38:22,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5654 states, 5653 states have (on average 6.428268176189634) internal successors, (36339), 5653 states have internal predecessors, (36339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:38:22,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5654 states to 5654 states and 36339 transitions. [2022-01-18 04:38:22,152 INFO L78 Accepts]: Start accepts. Automaton has 5654 states and 36339 transitions. Word has length 28 [2022-01-18 04:38:22,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:38:22,152 INFO L470 AbstractCegarLoop]: Abstraction has 5654 states and 36339 transitions. [2022-01-18 04:38:22,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 7 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) [2022-01-18 04:38:22,152 INFO L276 IsEmpty]: Start isEmpty. Operand 5654 states and 36339 transitions. [2022-01-18 04:38:22,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 04:38:22,168 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:38:22,168 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:38:22,186 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-01-18 04:38:22,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:38:22,383 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-18 04:38:22,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:38:22,384 INFO L85 PathProgramCache]: Analyzing trace with hash -1808352738, now seen corresponding path program 6 times [2022-01-18 04:38:22,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:38:22,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086383359] [2022-01-18 04:38:22,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:38:22,384 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:38:22,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:38:22,421 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-18 04:38:22,421 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:38:22,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086383359] [2022-01-18 04:38:22,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086383359] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:38:22,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1855688311] [2022-01-18 04:38:22,421 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 04:38:22,421 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:38:22,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:38:22,422 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) [2022-01-18 04:38:22,423 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-01-18 04:38:22,453 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 04:38:22,453 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:38:22,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-18 04:38:22,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:38:22,521 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-18 04:38:22,521 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:38:22,565 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-18 04:38:22,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1855688311] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:38:22,565 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:38:22,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 7 [2022-01-18 04:38:22,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004580076] [2022-01-18 04:38:22,566 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:38:22,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 04:38:22,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:38:22,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 04:38:22,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-18 04:38:22,567 INFO L87 Difference]: Start difference. First operand 5654 states and 36339 transitions. Second operand has 8 states, 8 states have (on average 6.875) internal successors, (55), 7 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) [2022-01-18 04:38:22,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:38:22,720 INFO L93 Difference]: Finished difference Result 7946 states and 50780 transitions. [2022-01-18 04:38:22,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 04:38:22,720 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 7 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 28 [2022-01-18 04:38:22,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:38:22,820 INFO L225 Difference]: With dead ends: 7946 [2022-01-18 04:38:22,820 INFO L226 Difference]: Without dead ends: 6800 [2022-01-18 04:38:22,820 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 50 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-18 04:38:22,821 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 60 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 04:38:22,821 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 96 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 04:38:22,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6800 states. [2022-01-18 04:38:22,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6800 to 5368. [2022-01-18 04:38:22,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5368 states, 5367 states have (on average 6.374697223774921) internal successors, (34213), 5367 states have internal predecessors, (34213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:38:22,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5368 states to 5368 states and 34213 transitions. [2022-01-18 04:38:22,959 INFO L78 Accepts]: Start accepts. Automaton has 5368 states and 34213 transitions. Word has length 28 [2022-01-18 04:38:22,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:38:22,959 INFO L470 AbstractCegarLoop]: Abstraction has 5368 states and 34213 transitions. [2022-01-18 04:38:22,959 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 7 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) [2022-01-18 04:38:22,959 INFO L276 IsEmpty]: Start isEmpty. Operand 5368 states and 34213 transitions. [2022-01-18 04:38:22,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 04:38:22,973 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:38:22,973 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:38:22,990 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-01-18 04:38:23,174 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-01-18 04:38:23,174 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-18 04:38:23,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:38:23,174 INFO L85 PathProgramCache]: Analyzing trace with hash 1475497308, now seen corresponding path program 7 times [2022-01-18 04:38:23,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:38:23,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585494922] [2022-01-18 04:38:23,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:38:23,175 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:38:23,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:38:23,207 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-18 04:38:23,207 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:38:23,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585494922] [2022-01-18 04:38:23,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585494922] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:38:23,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [881449630] [2022-01-18 04:38:23,208 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 04:38:23,208 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:38:23,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:38:23,208 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) [2022-01-18 04:38:23,209 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-01-18 04:38:23,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:38:23,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-18 04:38:23,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:38:23,355 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-18 04:38:23,355 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:38:23,395 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-18 04:38:23,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [881449630] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:38:23,395 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:38:23,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2022-01-18 04:38:23,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671386403] [2022-01-18 04:38:23,395 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:38:23,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 04:38:23,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:38:23,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 04:38:23,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-18 04:38:23,396 INFO L87 Difference]: Start difference. First operand 5368 states and 34213 transitions. Second operand has 8 states, 8 states have (on average 6.75) internal successors, (54), 7 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) [2022-01-18 04:38:23,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:38:23,569 INFO L93 Difference]: Finished difference Result 7087 states and 45258 transitions. [2022-01-18 04:38:23,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 04:38:23,570 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 7 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 28 [2022-01-18 04:38:23,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:38:23,593 INFO L225 Difference]: With dead ends: 7087 [2022-01-18 04:38:23,593 INFO L226 Difference]: Without dead ends: 6512 [2022-01-18 04:38:23,594 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 49 SyntacticMatches, 4 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-01-18 04:38:23,594 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 58 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 04:38:23,594 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 125 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 04:38:23,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6512 states. [2022-01-18 04:38:23,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6512 to 5940. [2022-01-18 04:38:23,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5940 states, 5939 states have (on average 6.380367065162485) internal successors, (37893), 5939 states have internal predecessors, (37893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:38:23,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5940 states to 5940 states and 37893 transitions. [2022-01-18 04:38:23,734 INFO L78 Accepts]: Start accepts. Automaton has 5940 states and 37893 transitions. Word has length 28 [2022-01-18 04:38:23,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:38:23,734 INFO L470 AbstractCegarLoop]: Abstraction has 5940 states and 37893 transitions. [2022-01-18 04:38:23,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 7 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) [2022-01-18 04:38:23,734 INFO L276 IsEmpty]: Start isEmpty. Operand 5940 states and 37893 transitions. [2022-01-18 04:38:23,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-18 04:38:23,752 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:38:23,752 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:38:23,769 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-01-18 04:38:23,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-01-18 04:38:23,969 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-18 04:38:23,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:38:23,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1880877169, now seen corresponding path program 8 times [2022-01-18 04:38:23,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:38:23,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512525639] [2022-01-18 04:38:23,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:38:23,970 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:38:23,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:38:24,021 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-18 04:38:24,021 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:38:24,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512525639] [2022-01-18 04:38:24,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512525639] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:38:24,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1141594220] [2022-01-18 04:38:24,022 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 04:38:24,022 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:38:24,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:38:24,023 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) [2022-01-18 04:38:24,024 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-01-18 04:38:24,055 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 04:38:24,055 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:38:24,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-18 04:38:24,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:38:24,233 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-18 04:38:24,233 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:38:24,300 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-18 04:38:24,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1141594220] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:38:24,301 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:38:24,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 6 [2022-01-18 04:38:24,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515270391] [2022-01-18 04:38:24,301 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:38:24,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 04:38:24,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:38:24,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 04:38:24,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-18 04:38:24,302 INFO L87 Difference]: Start difference. First operand 5940 states and 37893 transitions. Second operand has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 6 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) [2022-01-18 04:38:24,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:38:24,568 INFO L93 Difference]: Finished difference Result 11496 states and 73614 transitions. [2022-01-18 04:38:24,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 04:38:24,568 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 6 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 29 [2022-01-18 04:38:24,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:38:24,613 INFO L225 Difference]: With dead ends: 11496 [2022-01-18 04:38:24,613 INFO L226 Difference]: Without dead ends: 11208 [2022-01-18 04:38:24,614 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 49 SyntacticMatches, 8 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-18 04:38:24,614 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 62 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 04:38:24,614 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 123 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 04:38:24,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11208 states. [2022-01-18 04:38:24,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11208 to 9196. [2022-01-18 04:38:24,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9196 states, 9195 states have (on average 6.621098423056009) internal successors, (60881), 9195 states have internal predecessors, (60881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:38:24,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9196 states to 9196 states and 60881 transitions. [2022-01-18 04:38:24,885 INFO L78 Accepts]: Start accepts. Automaton has 9196 states and 60881 transitions. Word has length 29 [2022-01-18 04:38:24,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:38:24,886 INFO L470 AbstractCegarLoop]: Abstraction has 9196 states and 60881 transitions. [2022-01-18 04:38:24,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 6 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) [2022-01-18 04:38:24,886 INFO L276 IsEmpty]: Start isEmpty. Operand 9196 states and 60881 transitions. [2022-01-18 04:38:24,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-18 04:38:24,915 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:38:24,915 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:38:24,937 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-01-18 04:38:25,137 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,SelfDestructingSolverStorable14 [2022-01-18 04:38:25,138 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-18 04:38:25,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:38:25,138 INFO L85 PathProgramCache]: Analyzing trace with hash -847814829, now seen corresponding path program 9 times [2022-01-18 04:38:25,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:38:25,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45450619] [2022-01-18 04:38:25,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:38:25,138 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:38:25,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:38:25,184 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-18 04:38:25,184 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:38:25,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45450619] [2022-01-18 04:38:25,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45450619] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:38:25,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2016040784] [2022-01-18 04:38:25,185 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 04:38:25,185 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:38:25,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:38:25,186 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) [2022-01-18 04:38:25,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-01-18 04:38:25,216 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 04:38:25,216 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:38:25,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 04:38:25,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:38:25,326 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-18 04:38:25,326 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:38:25,373 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-18 04:38:25,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2016040784] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:38:25,374 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:38:25,374 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 3] total 7 [2022-01-18 04:38:25,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281605052] [2022-01-18 04:38:25,374 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:38:25,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 04:38:25,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:38:25,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 04:38:25,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-01-18 04:38:25,375 INFO L87 Difference]: Start difference. First operand 9196 states and 60881 transitions. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:38:25,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:38:25,869 INFO L93 Difference]: Finished difference Result 25018 states and 159726 transitions. [2022-01-18 04:38:25,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-18 04:38:25,870 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-01-18 04:38:25,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:38:25,974 INFO L225 Difference]: With dead ends: 25018 [2022-01-18 04:38:25,974 INFO L226 Difference]: Without dead ends: 22353 [2022-01-18 04:38:25,974 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 53 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2022-01-18 04:38:25,974 INFO L933 BasicCegarLoop]: 65 mSDtfsCounter, 111 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 558 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 04:38:25,975 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 299 Invalid, 567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 558 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 04:38:25,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22353 states. [2022-01-18 04:38:26,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22353 to 13742. [2022-01-18 04:38:26,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13742 states, 13741 states have (on average 6.9258423695509785) internal successors, (95168), 13741 states have internal predecessors, (95168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:38:26,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13742 states to 13742 states and 95168 transitions. [2022-01-18 04:38:26,502 INFO L78 Accepts]: Start accepts. Automaton has 13742 states and 95168 transitions. Word has length 29 [2022-01-18 04:38:26,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:38:26,502 INFO L470 AbstractCegarLoop]: Abstraction has 13742 states and 95168 transitions. [2022-01-18 04:38:26,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:38:26,502 INFO L276 IsEmpty]: Start isEmpty. Operand 13742 states and 95168 transitions. [2022-01-18 04:38:26,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 04:38:26,543 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:38:26,543 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:38:26,558 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-01-18 04:38:26,744 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,SelfDestructingSolverStorable15 [2022-01-18 04:38:26,744 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-18 04:38:26,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:38:26,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1109462170, now seen corresponding path program 10 times [2022-01-18 04:38:26,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:38:26,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195205605] [2022-01-18 04:38:26,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:38:26,745 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:38:26,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:38:26,769 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-18 04:38:26,769 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:38:26,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195205605] [2022-01-18 04:38:26,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195205605] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:38:26,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2131357482] [2022-01-18 04:38:26,770 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 04:38:26,770 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:38:26,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:38:26,771 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) [2022-01-18 04:38:26,772 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-01-18 04:38:26,802 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 04:38:26,802 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:38:26,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-18 04:38:26,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:38:26,870 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-18 04:38:26,871 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:38:26,914 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-18 04:38:26,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2131357482] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:38:26,914 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:38:26,914 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 7 [2022-01-18 04:38:26,914 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173914274] [2022-01-18 04:38:26,914 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:38:26,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 04:38:26,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:38:26,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 04:38:26,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-18 04:38:26,915 INFO L87 Difference]: Start difference. First operand 13742 states and 95168 transitions. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 7 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) [2022-01-18 04:38:27,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:38:27,190 INFO L93 Difference]: Finished difference Result 22024 states and 145091 transitions. [2022-01-18 04:38:27,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 04:38:27,190 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 7 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 30 [2022-01-18 04:38:27,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:38:27,260 INFO L225 Difference]: With dead ends: 22024 [2022-01-18 04:38:27,260 INFO L226 Difference]: Without dead ends: 17242 [2022-01-18 04:38:27,263 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 54 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-18 04:38:27,264 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 80 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 04:38:27,264 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 124 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 04:38:27,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17242 states. [2022-01-18 04:38:27,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17242 to 12713. [2022-01-18 04:38:27,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12713 states, 12712 states have (on average 6.821821900566394) internal successors, (86719), 12712 states have internal predecessors, (86719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:38:27,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12713 states to 12713 states and 86719 transitions. [2022-01-18 04:38:27,829 INFO L78 Accepts]: Start accepts. Automaton has 12713 states and 86719 transitions. Word has length 30 [2022-01-18 04:38:27,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:38:27,829 INFO L470 AbstractCegarLoop]: Abstraction has 12713 states and 86719 transitions. [2022-01-18 04:38:27,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 7 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) [2022-01-18 04:38:27,830 INFO L276 IsEmpty]: Start isEmpty. Operand 12713 states and 86719 transitions. [2022-01-18 04:38:27,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 04:38:27,869 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:38:27,869 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:38:27,886 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-01-18 04:38:28,070 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:38:28,070 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-18 04:38:28,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:38:28,070 INFO L85 PathProgramCache]: Analyzing trace with hash 465673390, now seen corresponding path program 11 times [2022-01-18 04:38:28,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:38:28,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521611394] [2022-01-18 04:38:28,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:38:28,071 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:38:28,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:38:28,103 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-18 04:38:28,103 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:38:28,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521611394] [2022-01-18 04:38:28,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521611394] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:38:28,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [943196286] [2022-01-18 04:38:28,104 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 04:38:28,104 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:38:28,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:38:28,105 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) [2022-01-18 04:38:28,106 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-01-18 04:38:28,136 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 04:38:28,136 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:38:28,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-18 04:38:28,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:38:28,225 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-18 04:38:28,226 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:38:28,278 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-18 04:38:28,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [943196286] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:38:28,279 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:38:28,279 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2022-01-18 04:38:28,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642519188] [2022-01-18 04:38:28,279 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:38:28,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 04:38:28,279 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:38:28,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 04:38:28,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-18 04:38:28,280 INFO L87 Difference]: Start difference. First operand 12713 states and 86719 transitions. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 7 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) [2022-01-18 04:38:28,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:38:28,595 INFO L93 Difference]: Finished difference Result 24284 states and 158204 transitions. [2022-01-18 04:38:28,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 04:38:28,596 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 7 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 30 [2022-01-18 04:38:28,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:38:28,837 INFO L225 Difference]: With dead ends: 24284 [2022-01-18 04:38:28,837 INFO L226 Difference]: Without dead ends: 15901 [2022-01-18 04:38:28,839 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 53 SyntacticMatches, 4 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-01-18 04:38:28,839 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 87 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 04:38:28,840 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 118 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 04:38:28,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15901 states. [2022-01-18 04:38:29,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15901 to 12713. [2022-01-18 04:38:29,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12713 states, 12712 states have (on average 6.732772183763373) internal successors, (85587), 12712 states have internal predecessors, (85587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:38:29,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12713 states to 12713 states and 85587 transitions. [2022-01-18 04:38:29,300 INFO L78 Accepts]: Start accepts. Automaton has 12713 states and 85587 transitions. Word has length 30 [2022-01-18 04:38:29,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:38:29,300 INFO L470 AbstractCegarLoop]: Abstraction has 12713 states and 85587 transitions. [2022-01-18 04:38:29,300 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 7 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) [2022-01-18 04:38:29,300 INFO L276 IsEmpty]: Start isEmpty. Operand 12713 states and 85587 transitions. [2022-01-18 04:38:29,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 04:38:29,335 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:38:29,335 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:38:29,350 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-01-18 04:38:29,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-01-18 04:38:29,535 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-18 04:38:29,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:38:29,535 INFO L85 PathProgramCache]: Analyzing trace with hash -2003086426, now seen corresponding path program 12 times [2022-01-18 04:38:29,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:38:29,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117219112] [2022-01-18 04:38:29,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:38:29,536 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:38:29,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:38:29,563 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-18 04:38:29,564 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:38:29,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117219112] [2022-01-18 04:38:29,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117219112] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:38:29,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1102515950] [2022-01-18 04:38:29,564 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 04:38:29,564 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:38:29,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:38:29,565 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) [2022-01-18 04:38:29,566 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-01-18 04:38:29,594 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 04:38:29,594 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:38:29,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-18 04:38:29,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:38:29,658 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-18 04:38:29,658 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:38:29,701 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-18 04:38:29,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1102515950] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:38:29,701 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:38:29,701 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 7 [2022-01-18 04:38:29,701 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449252764] [2022-01-18 04:38:29,701 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:38:29,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 04:38:29,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:38:29,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 04:38:29,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-18 04:38:29,703 INFO L87 Difference]: Start difference. First operand 12713 states and 85587 transitions. Second operand has 8 states, 8 states have (on average 6.875) internal successors, (55), 7 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) [2022-01-18 04:38:30,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:38:30,100 INFO L93 Difference]: Finished difference Result 22021 states and 143389 transitions. [2022-01-18 04:38:30,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 04:38:30,100 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 7 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 30 [2022-01-18 04:38:30,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:38:30,170 INFO L225 Difference]: With dead ends: 22021 [2022-01-18 04:38:30,170 INFO L226 Difference]: Without dead ends: 15543 [2022-01-18 04:38:30,170 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 54 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-01-18 04:38:30,173 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 52 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 04:38:30,173 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 122 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 04:38:30,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15543 states. [2022-01-18 04:38:30,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15543 to 11581. [2022-01-18 04:38:30,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11581 states, 11580 states have (on average 6.59853195164076) internal successors, (76411), 11580 states have internal predecessors, (76411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:38:30,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11581 states to 11581 states and 76411 transitions. [2022-01-18 04:38:30,583 INFO L78 Accepts]: Start accepts. Automaton has 11581 states and 76411 transitions. Word has length 30 [2022-01-18 04:38:30,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:38:30,584 INFO L470 AbstractCegarLoop]: Abstraction has 11581 states and 76411 transitions. [2022-01-18 04:38:30,584 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 7 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) [2022-01-18 04:38:30,584 INFO L276 IsEmpty]: Start isEmpty. Operand 11581 states and 76411 transitions. [2022-01-18 04:38:30,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 04:38:30,614 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:38:30,614 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:38:30,629 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2022-01-18 04:38:30,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:38:30,818 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-18 04:38:30,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:38:30,818 INFO L85 PathProgramCache]: Analyzing trace with hash 415691786, now seen corresponding path program 13 times [2022-01-18 04:38:30,818 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:38:30,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463117839] [2022-01-18 04:38:30,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:38:30,818 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:38:30,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:38:30,854 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-18 04:38:30,854 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:38:30,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463117839] [2022-01-18 04:38:30,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463117839] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:38:30,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2065495154] [2022-01-18 04:38:30,855 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 04:38:30,855 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:38:30,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:38:30,856 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) [2022-01-18 04:38:30,858 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-01-18 04:38:30,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:38:30,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-18 04:38:30,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:38:30,959 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-18 04:38:30,959 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:38:31,004 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-18 04:38:31,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2065495154] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:38:31,004 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:38:31,004 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 7 [2022-01-18 04:38:31,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721899163] [2022-01-18 04:38:31,005 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:38:31,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 04:38:31,005 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:38:31,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 04:38:31,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-18 04:38:31,005 INFO L87 Difference]: Start difference. First operand 11581 states and 76411 transitions. Second operand has 8 states, 8 states have (on average 6.875) internal successors, (55), 7 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) [2022-01-18 04:38:31,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:38:31,419 INFO L93 Difference]: Finished difference Result 18164 states and 118652 transitions. [2022-01-18 04:38:31,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 04:38:31,419 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 7 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 30 [2022-01-18 04:38:31,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:38:31,484 INFO L225 Difference]: With dead ends: 18164 [2022-01-18 04:38:31,484 INFO L226 Difference]: Without dead ends: 14769 [2022-01-18 04:38:31,484 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 54 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-18 04:38:31,485 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 54 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 04:38:31,485 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 128 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 04:38:31,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14769 states. [2022-01-18 04:38:31,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14769 to 11015. [2022-01-18 04:38:31,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11015 states, 11014 states have (on average 6.546758670782641) internal successors, (72106), 11014 states have internal predecessors, (72106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:38:31,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11015 states to 11015 states and 72106 transitions. [2022-01-18 04:38:31,771 INFO L78 Accepts]: Start accepts. Automaton has 11015 states and 72106 transitions. Word has length 30 [2022-01-18 04:38:31,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:38:31,771 INFO L470 AbstractCegarLoop]: Abstraction has 11015 states and 72106 transitions. [2022-01-18 04:38:31,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 7 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) [2022-01-18 04:38:31,771 INFO L276 IsEmpty]: Start isEmpty. Operand 11015 states and 72106 transitions. [2022-01-18 04:38:31,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 04:38:31,966 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:38:31,966 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:38:31,982 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-01-18 04:38:32,177 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:38:32,177 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-18 04:38:32,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:38:32,178 INFO L85 PathProgramCache]: Analyzing trace with hash 477731400, now seen corresponding path program 14 times [2022-01-18 04:38:32,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:38:32,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209167343] [2022-01-18 04:38:32,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:38:32,178 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:38:32,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:38:32,206 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-18 04:38:32,206 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:38:32,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209167343] [2022-01-18 04:38:32,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209167343] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:38:32,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1057238954] [2022-01-18 04:38:32,206 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 04:38:32,206 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:38:32,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:38:32,208 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) [2022-01-18 04:38:32,210 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-01-18 04:38:32,237 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 04:38:32,237 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:38:32,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-18 04:38:32,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:38:32,318 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-18 04:38:32,318 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:38:32,373 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-18 04:38:32,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1057238954] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:38:32,373 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:38:32,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2022-01-18 04:38:32,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938286188] [2022-01-18 04:38:32,374 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:38:32,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 04:38:32,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:38:32,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 04:38:32,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-18 04:38:32,374 INFO L87 Difference]: Start difference. First operand 11015 states and 72106 transitions. Second operand has 8 states, 8 states have (on average 6.75) internal successors, (54), 7 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) [2022-01-18 04:38:32,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:38:32,618 INFO L93 Difference]: Finished difference Result 16004 states and 104321 transitions. [2022-01-18 04:38:32,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 04:38:32,618 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 7 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 30 [2022-01-18 04:38:32,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:38:32,679 INFO L225 Difference]: With dead ends: 16004 [2022-01-18 04:38:32,679 INFO L226 Difference]: Without dead ends: 13279 [2022-01-18 04:38:32,679 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 53 SyntacticMatches, 4 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-01-18 04:38:32,680 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 53 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 04:38:32,680 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 119 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 04:38:32,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13279 states. [2022-01-18 04:38:32,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13279 to 12147. [2022-01-18 04:38:33,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12147 states, 12146 states have (on average 6.552280586201219) internal successors, (79584), 12146 states have internal predecessors, (79584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:38:33,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12147 states to 12147 states and 79584 transitions. [2022-01-18 04:38:33,060 INFO L78 Accepts]: Start accepts. Automaton has 12147 states and 79584 transitions. Word has length 30 [2022-01-18 04:38:33,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:38:33,060 INFO L470 AbstractCegarLoop]: Abstraction has 12147 states and 79584 transitions. [2022-01-18 04:38:33,060 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 7 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) [2022-01-18 04:38:33,060 INFO L276 IsEmpty]: Start isEmpty. Operand 12147 states and 79584 transitions. [2022-01-18 04:38:33,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-01-18 04:38:33,090 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:38:33,091 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:38:33,106 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-01-18 04:38:33,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:38:33,292 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-18 04:38:33,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:38:33,293 INFO L85 PathProgramCache]: Analyzing trace with hash 2135980253, now seen corresponding path program 15 times [2022-01-18 04:38:33,293 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:38:33,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637558022] [2022-01-18 04:38:33,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:38:33,293 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:38:33,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:38:33,331 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-18 04:38:33,331 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:38:33,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637558022] [2022-01-18 04:38:33,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637558022] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:38:33,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [785190504] [2022-01-18 04:38:33,331 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 04:38:33,332 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:38:33,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:38:33,332 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) [2022-01-18 04:38:33,337 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-01-18 04:38:33,363 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 04:38:33,363 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:38:33,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-18 04:38:33,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:38:33,540 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-18 04:38:33,540 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:38:33,584 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-18 04:38:33,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [785190504] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:38:33,584 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:38:33,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 9 [2022-01-18 04:38:33,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135423210] [2022-01-18 04:38:33,584 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:38:33,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-18 04:38:33,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:38:33,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-18 04:38:33,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-01-18 04:38:33,585 INFO L87 Difference]: Start difference. First operand 12147 states and 79584 transitions. Second operand has 10 states, 10 states have (on average 7.9) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:38:34,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:38:34,684 INFO L93 Difference]: Finished difference Result 42090 states and 268739 transitions. [2022-01-18 04:38:34,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-01-18 04:38:34,684 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2022-01-18 04:38:34,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:38:34,906 INFO L225 Difference]: With dead ends: 42090 [2022-01-18 04:38:34,906 INFO L226 Difference]: Without dead ends: 38810 [2022-01-18 04:38:34,906 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 55 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=509, Unknown=0, NotChecked=0, Total=600 [2022-01-18 04:38:34,907 INFO L933 BasicCegarLoop]: 97 mSDtfsCounter, 166 mSDsluCounter, 1241 mSDsCounter, 0 mSdLazyCounter, 1288 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 665 SdHoareTripleChecker+Invalid, 1304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 04:38:34,907 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [166 Valid, 665 Invalid, 1304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1288 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 04:38:34,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38810 states. [2022-01-18 04:38:35,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38810 to 24247. [2022-01-18 04:38:35,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24247 states, 24246 states have (on average 6.913552750969232) internal successors, (167626), 24246 states have internal predecessors, (167626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:38:35,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24247 states to 24247 states and 167626 transitions. [2022-01-18 04:38:35,945 INFO L78 Accepts]: Start accepts. Automaton has 24247 states and 167626 transitions. Word has length 31 [2022-01-18 04:38:35,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:38:35,946 INFO L470 AbstractCegarLoop]: Abstraction has 24247 states and 167626 transitions. [2022-01-18 04:38:35,946 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:38:35,946 INFO L276 IsEmpty]: Start isEmpty. Operand 24247 states and 167626 transitions. [2022-01-18 04:38:36,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-01-18 04:38:36,015 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:38:36,015 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:38:36,030 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-01-18 04:38:36,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:38:36,215 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-18 04:38:36,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:38:36,216 INFO L85 PathProgramCache]: Analyzing trace with hash 1628666418, now seen corresponding path program 16 times [2022-01-18 04:38:36,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:38:36,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391785972] [2022-01-18 04:38:36,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:38:36,216 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:38:36,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:38:36,246 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-18 04:38:36,246 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:38:36,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391785972] [2022-01-18 04:38:36,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391785972] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:38:36,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [137368339] [2022-01-18 04:38:36,246 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 04:38:36,246 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:38:36,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:38:36,247 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) [2022-01-18 04:38:36,248 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-01-18 04:38:36,276 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 04:38:36,276 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:38:36,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 04:38:36,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:38:36,365 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-18 04:38:36,365 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:38:36,418 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-18 04:38:36,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [137368339] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:38:36,419 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:38:36,419 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 5] total 9 [2022-01-18 04:38:36,419 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203317186] [2022-01-18 04:38:36,419 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:38:36,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-18 04:38:36,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:38:36,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-18 04:38:36,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-01-18 04:38:36,420 INFO L87 Difference]: Start difference. First operand 24247 states and 167626 transitions. Second operand has 10 states, 10 states have (on average 5.4) internal successors, (54), 9 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) [2022-01-18 04:38:37,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:38:37,096 INFO L93 Difference]: Finished difference Result 33951 states and 226852 transitions. [2022-01-18 04:38:37,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-18 04:38:37,096 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 9 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 32 [2022-01-18 04:38:37,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:38:37,265 INFO L225 Difference]: With dead ends: 33951 [2022-01-18 04:38:37,266 INFO L226 Difference]: Without dead ends: 31017 [2022-01-18 04:38:37,266 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 55 SyntacticMatches, 6 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-01-18 04:38:37,266 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 111 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 482 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 04:38:37,266 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 217 Invalid, 483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 482 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 04:38:37,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31017 states. [2022-01-18 04:38:37,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31017 to 23869. [2022-01-18 04:38:38,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23869 states, 23868 states have (on average 6.8552874141109434) internal successors, (163622), 23868 states have internal predecessors, (163622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:38:38,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23869 states to 23869 states and 163622 transitions. [2022-01-18 04:38:38,179 INFO L78 Accepts]: Start accepts. Automaton has 23869 states and 163622 transitions. Word has length 32 [2022-01-18 04:38:38,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:38:38,179 INFO L470 AbstractCegarLoop]: Abstraction has 23869 states and 163622 transitions. [2022-01-18 04:38:38,179 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 9 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) [2022-01-18 04:38:38,179 INFO L276 IsEmpty]: Start isEmpty. Operand 23869 states and 163622 transitions. [2022-01-18 04:38:38,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-01-18 04:38:38,507 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:38:38,507 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:38:38,523 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2022-01-18 04:38:38,708 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,SelfDestructingSolverStorable22 [2022-01-18 04:38:38,708 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-18 04:38:38,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:38:38,708 INFO L85 PathProgramCache]: Analyzing trace with hash 620042656, now seen corresponding path program 17 times [2022-01-18 04:38:38,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:38:38,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886877918] [2022-01-18 04:38:38,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:38:38,709 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:38:38,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:38:38,744 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-18 04:38:38,744 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:38:38,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886877918] [2022-01-18 04:38:38,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886877918] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:38:38,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1540566979] [2022-01-18 04:38:38,745 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 04:38:38,745 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:38:38,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:38:38,746 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) [2022-01-18 04:38:38,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-01-18 04:38:38,775 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 04:38:38,775 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:38:38,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 04:38:38,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:38:38,855 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-18 04:38:38,856 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:38:38,919 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-18 04:38:38,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1540566979] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:38:38,920 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:38:38,920 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-01-18 04:38:38,920 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452023709] [2022-01-18 04:38:38,920 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:38:38,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 04:38:38,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:38:38,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 04:38:38,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-01-18 04:38:38,921 INFO L87 Difference]: Start difference. First operand 23869 states and 163622 transitions. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 10 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) [2022-01-18 04:38:39,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:38:39,449 INFO L93 Difference]: Finished difference Result 35105 states and 233275 transitions. [2022-01-18 04:38:39,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-18 04:38:39,450 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 10 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 32 [2022-01-18 04:38:39,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:38:39,586 INFO L225 Difference]: With dead ends: 35105 [2022-01-18 04:38:39,586 INFO L226 Difference]: Without dead ends: 27952 [2022-01-18 04:38:39,586 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 53 SyntacticMatches, 7 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2022-01-18 04:38:39,587 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 167 mSDsluCounter, 537 mSDsCounter, 0 mSdLazyCounter, 610 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 04:38:39,587 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [167 Valid, 285 Invalid, 618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 610 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 04:38:39,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27952 states. [2022-01-18 04:38:40,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27952 to 21827. [2022-01-18 04:38:40,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21827 states, 21826 states have (on average 6.797443416109227) internal successors, (148361), 21826 states have internal predecessors, (148361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:38:40,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21827 states to 21827 states and 148361 transitions. [2022-01-18 04:38:40,631 INFO L78 Accepts]: Start accepts. Automaton has 21827 states and 148361 transitions. Word has length 32 [2022-01-18 04:38:40,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:38:40,631 INFO L470 AbstractCegarLoop]: Abstraction has 21827 states and 148361 transitions. [2022-01-18 04:38:40,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 10 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) [2022-01-18 04:38:40,631 INFO L276 IsEmpty]: Start isEmpty. Operand 21827 states and 148361 transitions. [2022-01-18 04:38:40,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-01-18 04:38:40,696 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:38:40,696 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:38:40,711 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2022-01-18 04:38:40,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-01-18 04:38:40,903 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-18 04:38:40,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:38:40,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1356406896, now seen corresponding path program 18 times [2022-01-18 04:38:40,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:38:40,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546914924] [2022-01-18 04:38:40,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:38:40,904 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:38:40,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:38:40,943 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-18 04:38:40,943 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:38:40,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546914924] [2022-01-18 04:38:40,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546914924] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:38:40,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [267601610] [2022-01-18 04:38:40,944 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 04:38:40,944 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:38:40,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:38:40,945 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) [2022-01-18 04:38:40,946 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-01-18 04:38:40,973 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 04:38:40,974 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:38:40,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 04:38:40,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:38:41,061 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-18 04:38:41,061 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:38:41,121 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-01-18 04:38:41,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [267601610] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:38:41,121 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:38:41,121 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 5] total 10 [2022-01-18 04:38:41,121 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461206721] [2022-01-18 04:38:41,121 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:38:41,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 04:38:41,122 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:38:41,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 04:38:41,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-01-18 04:38:41,122 INFO L87 Difference]: Start difference. First operand 21827 states and 148361 transitions. Second operand has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 10 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) [2022-01-18 04:38:41,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:38:41,648 INFO L93 Difference]: Finished difference Result 39186 states and 256137 transitions. [2022-01-18 04:38:41,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 04:38:41,648 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 10 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 32 [2022-01-18 04:38:41,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:38:42,056 INFO L225 Difference]: With dead ends: 39186 [2022-01-18 04:38:42,057 INFO L226 Difference]: Without dead ends: 33561 [2022-01-18 04:38:42,057 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 56 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2022-01-18 04:38:42,057 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 135 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 528 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 04:38:42,057 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [135 Valid, 236 Invalid, 531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 528 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 04:38:42,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33561 states. [2022-01-18 04:38:42,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33561 to 21317. [2022-01-18 04:38:42,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21317 states, 21316 states have (on average 6.68540063801839) internal successors, (142506), 21316 states have internal predecessors, (142506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:38:43,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21317 states to 21317 states and 142506 transitions. [2022-01-18 04:38:43,069 INFO L78 Accepts]: Start accepts. Automaton has 21317 states and 142506 transitions. Word has length 32 [2022-01-18 04:38:43,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:38:43,069 INFO L470 AbstractCegarLoop]: Abstraction has 21317 states and 142506 transitions. [2022-01-18 04:38:43,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 10 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) [2022-01-18 04:38:43,069 INFO L276 IsEmpty]: Start isEmpty. Operand 21317 states and 142506 transitions. [2022-01-18 04:38:43,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-01-18 04:38:43,133 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:38:43,133 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:38:43,149 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-01-18 04:38:43,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:38:43,347 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-18 04:38:43,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:38:43,348 INFO L85 PathProgramCache]: Analyzing trace with hash -2037058060, now seen corresponding path program 19 times [2022-01-18 04:38:43,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:38:43,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408727213] [2022-01-18 04:38:43,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:38:43,348 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:38:43,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:38:43,380 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-18 04:38:43,381 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:38:43,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408727213] [2022-01-18 04:38:43,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408727213] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:38:43,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1168563612] [2022-01-18 04:38:43,381 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 04:38:43,381 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:38:43,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:38:43,382 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) [2022-01-18 04:38:43,383 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-01-18 04:38:43,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:38:43,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 04:38:43,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:38:43,502 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-18 04:38:43,503 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:38:43,564 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-18 04:38:43,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1168563612] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:38:43,564 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:38:43,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 5] total 10 [2022-01-18 04:38:43,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560366172] [2022-01-18 04:38:43,564 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:38:43,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 04:38:43,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:38:43,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 04:38:43,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-01-18 04:38:43,565 INFO L87 Difference]: Start difference. First operand 21317 states and 142506 transitions. Second operand has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 10 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) [2022-01-18 04:38:44,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:38:44,037 INFO L93 Difference]: Finished difference Result 35611 states and 232490 transitions. [2022-01-18 04:38:44,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 04:38:44,037 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 10 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 32 [2022-01-18 04:38:44,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:38:44,176 INFO L225 Difference]: With dead ends: 35611 [2022-01-18 04:38:44,176 INFO L226 Difference]: Without dead ends: 28971 [2022-01-18 04:38:44,176 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 56 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2022-01-18 04:38:44,177 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 108 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 497 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 04:38:44,177 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 218 Invalid, 500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 497 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 04:38:44,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28971 states. [2022-01-18 04:38:44,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28971 to 20296. [2022-01-18 04:38:44,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20296 states, 20295 states have (on average 6.620645479182064) internal successors, (134366), 20295 states have internal predecessors, (134366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:38:44,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20296 states to 20296 states and 134366 transitions. [2022-01-18 04:38:44,998 INFO L78 Accepts]: Start accepts. Automaton has 20296 states and 134366 transitions. Word has length 32 [2022-01-18 04:38:44,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:38:44,998 INFO L470 AbstractCegarLoop]: Abstraction has 20296 states and 134366 transitions. [2022-01-18 04:38:44,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 10 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) [2022-01-18 04:38:44,998 INFO L276 IsEmpty]: Start isEmpty. Operand 20296 states and 134366 transitions. [2022-01-18 04:38:45,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-01-18 04:38:45,053 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:38:45,054 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:38:45,069 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2022-01-18 04:38:45,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:38:45,254 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-18 04:38:45,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:38:45,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1246791986, now seen corresponding path program 20 times [2022-01-18 04:38:45,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:38:45,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721675026] [2022-01-18 04:38:45,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:38:45,255 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:38:45,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:38:45,285 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-18 04:38:45,285 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:38:45,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721675026] [2022-01-18 04:38:45,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721675026] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:38:45,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1223069966] [2022-01-18 04:38:45,285 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 04:38:45,285 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:38:45,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:38:45,287 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) [2022-01-18 04:38:45,287 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-01-18 04:38:45,314 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 04:38:45,314 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:38:45,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 04:38:45,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:38:45,405 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-18 04:38:45,405 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:38:45,465 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-18 04:38:45,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1223069966] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:38:45,465 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:38:45,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 11 [2022-01-18 04:38:45,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906584420] [2022-01-18 04:38:45,466 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:38:45,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-18 04:38:45,466 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:38:45,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-18 04:38:45,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-01-18 04:38:45,466 INFO L87 Difference]: Start difference. First operand 20296 states and 134366 transitions. Second operand has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 11 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) [2022-01-18 04:38:46,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:38:46,136 INFO L93 Difference]: Finished difference Result 30499 states and 199941 transitions. [2022-01-18 04:38:46,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 04:38:46,137 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 11 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 32 [2022-01-18 04:38:46,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:38:46,269 INFO L225 Difference]: With dead ends: 30499 [2022-01-18 04:38:46,269 INFO L226 Difference]: Without dead ends: 29476 [2022-01-18 04:38:46,269 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 55 SyntacticMatches, 4 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2022-01-18 04:38:46,269 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 110 mSDsluCounter, 597 mSDsCounter, 0 mSdLazyCounter, 716 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 04:38:46,270 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 303 Invalid, 720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 716 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 04:38:46,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29476 states. [2022-01-18 04:38:46,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29476 to 20296. [2022-01-18 04:38:46,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20296 states, 20295 states have (on average 6.620645479182064) internal successors, (134366), 20295 states have internal predecessors, (134366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:38:47,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20296 states to 20296 states and 134366 transitions. [2022-01-18 04:38:47,107 INFO L78 Accepts]: Start accepts. Automaton has 20296 states and 134366 transitions. Word has length 32 [2022-01-18 04:38:47,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:38:47,107 INFO L470 AbstractCegarLoop]: Abstraction has 20296 states and 134366 transitions. [2022-01-18 04:38:47,108 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 11 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) [2022-01-18 04:38:47,108 INFO L276 IsEmpty]: Start isEmpty. Operand 20296 states and 134366 transitions. [2022-01-18 04:38:47,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-01-18 04:38:47,168 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:38:47,168 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:38:47,184 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2022-01-18 04:38:47,368 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-01-18 04:38:47,368 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-18 04:38:47,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:38:47,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1883991200, now seen corresponding path program 21 times [2022-01-18 04:38:47,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:38:47,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766779135] [2022-01-18 04:38:47,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:38:47,369 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:38:47,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:38:47,411 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-18 04:38:47,411 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:38:47,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766779135] [2022-01-18 04:38:47,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766779135] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:38:47,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [796175739] [2022-01-18 04:38:47,412 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 04:38:47,412 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:38:47,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:38:47,413 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) [2022-01-18 04:38:47,414 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-01-18 04:38:47,441 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 04:38:47,442 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:38:47,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-18 04:38:47,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:38:47,653 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-01-18 04:38:47,653 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:38:47,722 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-01-18 04:38:47,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [796175739] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:38:47,722 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:38:47,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 4] total 13 [2022-01-18 04:38:47,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112731915] [2022-01-18 04:38:47,722 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:38:47,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-18 04:38:47,723 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:38:47,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-18 04:38:47,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-01-18 04:38:47,723 INFO L87 Difference]: Start difference. First operand 20296 states and 134366 transitions. Second operand has 14 states, 14 states have (on average 5.857142857142857) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:38:49,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:38:49,718 INFO L93 Difference]: Finished difference Result 55689 states and 355451 transitions. [2022-01-18 04:38:49,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-01-18 04:38:49,718 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.857142857142857) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-01-18 04:38:49,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:38:50,000 INFO L225 Difference]: With dead ends: 55689 [2022-01-18 04:38:50,000 INFO L226 Difference]: Without dead ends: 48821 [2022-01-18 04:38:50,001 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 55 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 753 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=290, Invalid=2362, Unknown=0, NotChecked=0, Total=2652 [2022-01-18 04:38:50,001 INFO L933 BasicCegarLoop]: 103 mSDtfsCounter, 550 mSDsluCounter, 1992 mSDsCounter, 0 mSdLazyCounter, 2478 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 550 SdHoareTripleChecker+Valid, 1036 SdHoareTripleChecker+Invalid, 2588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 2478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 04:38:50,002 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [550 Valid, 1036 Invalid, 2588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 2478 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-18 04:38:50,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48821 states. [2022-01-18 04:38:50,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48821 to 23776. [2022-01-18 04:38:50,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23776 states, 23775 states have (on average 6.784269190325973) internal successors, (161296), 23775 states have internal predecessors, (161296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:38:51,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23776 states to 23776 states and 161296 transitions. [2022-01-18 04:38:51,110 INFO L78 Accepts]: Start accepts. Automaton has 23776 states and 161296 transitions. Word has length 32 [2022-01-18 04:38:51,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:38:51,110 INFO L470 AbstractCegarLoop]: Abstraction has 23776 states and 161296 transitions. [2022-01-18 04:38:51,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.857142857142857) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:38:51,110 INFO L276 IsEmpty]: Start isEmpty. Operand 23776 states and 161296 transitions. [2022-01-18 04:38:51,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-01-18 04:38:51,179 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:38:51,179 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:38:51,194 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2022-01-18 04:38:51,379 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,SelfDestructingSolverStorable27 [2022-01-18 04:38:51,379 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-18 04:38:51,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:38:51,380 INFO L85 PathProgramCache]: Analyzing trace with hash -424911306, now seen corresponding path program 22 times [2022-01-18 04:38:51,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:38:51,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344292882] [2022-01-18 04:38:51,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:38:51,380 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:38:51,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:38:51,409 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-18 04:38:51,409 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:38:51,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344292882] [2022-01-18 04:38:51,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344292882] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:38:51,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [117964835] [2022-01-18 04:38:51,409 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 04:38:51,409 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:38:51,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:38:51,410 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) [2022-01-18 04:38:51,411 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-01-18 04:38:51,439 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 04:38:51,439 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:38:51,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 04:38:51,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:38:51,520 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-18 04:38:51,520 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:38:51,573 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-18 04:38:51,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [117964835] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:38:51,573 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:38:51,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 5] total 9 [2022-01-18 04:38:51,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996633890] [2022-01-18 04:38:51,574 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:38:51,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-18 04:38:51,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:38:51,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-18 04:38:51,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-01-18 04:38:51,574 INFO L87 Difference]: Start difference. First operand 23776 states and 161296 transitions. Second operand has 10 states, 10 states have (on average 5.8) internal successors, (58), 9 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) [2022-01-18 04:38:52,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:38:52,387 INFO L93 Difference]: Finished difference Result 36270 states and 239993 transitions. [2022-01-18 04:38:52,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-18 04:38:52,388 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 9 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 32 [2022-01-18 04:38:52,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:38:52,551 INFO L225 Difference]: With dead ends: 36270 [2022-01-18 04:38:52,551 INFO L226 Difference]: Without dead ends: 32102 [2022-01-18 04:38:52,551 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 55 SyntacticMatches, 6 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2022-01-18 04:38:52,552 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 143 mSDsluCounter, 445 mSDsCounter, 0 mSdLazyCounter, 511 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 04:38:52,552 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [143 Valid, 236 Invalid, 516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 511 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 04:38:52,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32102 states. [2022-01-18 04:38:53,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32102 to 23776. [2022-01-18 04:38:53,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23776 states, 23775 states have (on average 6.759284963196635) internal successors, (160702), 23775 states have internal predecessors, (160702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:38:53,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23776 states to 23776 states and 160702 transitions. [2022-01-18 04:38:53,481 INFO L78 Accepts]: Start accepts. Automaton has 23776 states and 160702 transitions. Word has length 32 [2022-01-18 04:38:53,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:38:53,482 INFO L470 AbstractCegarLoop]: Abstraction has 23776 states and 160702 transitions. [2022-01-18 04:38:53,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 9 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) [2022-01-18 04:38:53,482 INFO L276 IsEmpty]: Start isEmpty. Operand 23776 states and 160702 transitions. [2022-01-18 04:38:53,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-01-18 04:38:53,553 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:38:53,553 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:38:53,569 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-01-18 04:38:53,753 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,SelfDestructingSolverStorable28 [2022-01-18 04:38:53,754 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-18 04:38:53,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:38:53,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1105562470, now seen corresponding path program 23 times [2022-01-18 04:38:53,754 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:38:53,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507228048] [2022-01-18 04:38:53,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:38:53,754 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:38:53,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:38:53,784 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-18 04:38:53,785 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:38:53,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507228048] [2022-01-18 04:38:53,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507228048] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:38:53,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1706615057] [2022-01-18 04:38:53,785 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 04:38:53,785 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:38:53,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:38:53,786 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) [2022-01-18 04:38:53,788 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-01-18 04:38:53,816 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-01-18 04:38:53,816 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:38:53,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 04:38:53,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:38:53,905 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-18 04:38:53,905 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:38:53,957 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-18 04:38:53,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1706615057] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:38:53,958 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:38:53,958 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 5] total 9 [2022-01-18 04:38:53,958 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741670670] [2022-01-18 04:38:53,958 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:38:53,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-18 04:38:53,958 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:38:53,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-18 04:38:53,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-01-18 04:38:53,959 INFO L87 Difference]: Start difference. First operand 23776 states and 160702 transitions. Second operand has 10 states, 10 states have (on average 5.8) internal successors, (58), 9 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) [2022-01-18 04:38:54,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:38:54,415 INFO L93 Difference]: Finished difference Result 33889 states and 224209 transitions. [2022-01-18 04:38:54,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-18 04:38:54,415 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 9 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 32 [2022-01-18 04:38:54,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:38:54,929 INFO L225 Difference]: With dead ends: 33889 [2022-01-18 04:38:54,929 INFO L226 Difference]: Without dead ends: 30917 [2022-01-18 04:38:54,929 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 55 SyntacticMatches, 6 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-01-18 04:38:54,930 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 101 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 04:38:54,930 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 177 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 04:38:54,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30917 states. [2022-01-18 04:38:55,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30917 to 23182. [2022-01-18 04:38:55,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23182 states, 23181 states have (on average 6.685475173633579) internal successors, (154976), 23181 states have internal predecessors, (154976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:38:55,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23182 states to 23182 states and 154976 transitions. [2022-01-18 04:38:55,914 INFO L78 Accepts]: Start accepts. Automaton has 23182 states and 154976 transitions. Word has length 32 [2022-01-18 04:38:55,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:38:55,914 INFO L470 AbstractCegarLoop]: Abstraction has 23182 states and 154976 transitions. [2022-01-18 04:38:55,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 9 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) [2022-01-18 04:38:55,915 INFO L276 IsEmpty]: Start isEmpty. Operand 23182 states and 154976 transitions. [2022-01-18 04:38:55,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-01-18 04:38:55,989 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:38:55,989 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:38:56,004 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-01-18 04:38:56,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:38:56,204 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-18 04:38:56,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:38:56,204 INFO L85 PathProgramCache]: Analyzing trace with hash -2116679720, now seen corresponding path program 24 times [2022-01-18 04:38:56,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:38:56,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10263082] [2022-01-18 04:38:56,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:38:56,205 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:38:56,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:38:56,231 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-18 04:38:56,231 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:38:56,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10263082] [2022-01-18 04:38:56,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10263082] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:38:56,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [501891536] [2022-01-18 04:38:56,232 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 04:38:56,232 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:38:56,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:38:56,232 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) [2022-01-18 04:38:56,233 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-01-18 04:38:56,260 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 04:38:56,260 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:38:56,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 04:38:56,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:38:56,342 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-18 04:38:56,343 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:38:56,395 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-18 04:38:56,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [501891536] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:38:56,396 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:38:56,396 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 6] total 10 [2022-01-18 04:38:56,396 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771476203] [2022-01-18 04:38:56,396 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:38:56,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 04:38:56,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:38:56,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 04:38:56,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-01-18 04:38:56,396 INFO L87 Difference]: Start difference. First operand 23182 states and 154976 transitions. Second operand has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 10 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) [2022-01-18 04:38:57,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:38:57,074 INFO L93 Difference]: Finished difference Result 46372 states and 305862 transitions. [2022-01-18 04:38:57,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-18 04:38:57,074 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 10 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 32 [2022-01-18 04:38:57,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:38:57,253 INFO L225 Difference]: With dead ends: 46372 [2022-01-18 04:38:57,254 INFO L226 Difference]: Without dead ends: 33280 [2022-01-18 04:38:57,254 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 54 SyntacticMatches, 6 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2022-01-18 04:38:57,254 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 174 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 646 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 646 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 04:38:57,254 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [174 Valid, 280 Invalid, 655 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 646 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 04:38:57,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33280 states. [2022-01-18 04:38:58,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33280 to 19618. [2022-01-18 04:38:58,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19618 states, 19617 states have (on average 6.602946424019983) internal successors, (129530), 19617 states have internal predecessors, (129530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:38:58,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19618 states to 19618 states and 129530 transitions. [2022-01-18 04:38:58,134 INFO L78 Accepts]: Start accepts. Automaton has 19618 states and 129530 transitions. Word has length 32 [2022-01-18 04:38:58,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:38:58,134 INFO L470 AbstractCegarLoop]: Abstraction has 19618 states and 129530 transitions. [2022-01-18 04:38:58,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 10 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) [2022-01-18 04:38:58,134 INFO L276 IsEmpty]: Start isEmpty. Operand 19618 states and 129530 transitions. [2022-01-18 04:38:58,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-01-18 04:38:58,187 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:38:58,187 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:38:58,202 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2022-01-18 04:38:58,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:38:58,391 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-18 04:38:58,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:38:58,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1909541148, now seen corresponding path program 25 times [2022-01-18 04:38:58,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:38:58,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590848675] [2022-01-18 04:38:58,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:38:58,392 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:38:58,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:38:58,422 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-18 04:38:58,423 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:38:58,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590848675] [2022-01-18 04:38:58,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590848675] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:38:58,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1887403719] [2022-01-18 04:38:58,423 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 04:38:58,423 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:38:58,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:38:58,424 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) [2022-01-18 04:38:58,425 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-01-18 04:38:58,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:38:58,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 04:38:58,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:38:58,526 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-18 04:38:58,526 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:38:58,583 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-18 04:38:58,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1887403719] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:38:58,583 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:38:58,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-01-18 04:38:58,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791202194] [2022-01-18 04:38:58,583 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:38:58,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 04:38:58,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:38:58,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 04:38:58,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-01-18 04:38:58,584 INFO L87 Difference]: Start difference. First operand 19618 states and 129530 transitions. Second operand has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 10 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:38:59,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:38:59,289 INFO L93 Difference]: Finished difference Result 24373 states and 161087 transitions. [2022-01-18 04:38:59,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-18 04:38:59,289 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 10 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-01-18 04:38:59,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:38:59,418 INFO L225 Difference]: With dead ends: 24373 [2022-01-18 04:38:59,418 INFO L226 Difference]: Without dead ends: 23182 [2022-01-18 04:38:59,418 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 53 SyntacticMatches, 7 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2022-01-18 04:38:59,419 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 136 mSDsluCounter, 392 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 04:38:59,419 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 211 Invalid, 499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 491 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 04:38:59,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23182 states. [2022-01-18 04:38:59,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23182 to 20806. [2022-01-18 04:38:59,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20806 states, 20805 states have (on average 6.605046863734679) internal successors, (137418), 20805 states have internal predecessors, (137418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:39:00,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20806 states to 20806 states and 137418 transitions. [2022-01-18 04:39:00,092 INFO L78 Accepts]: Start accepts. Automaton has 20806 states and 137418 transitions. Word has length 32 [2022-01-18 04:39:00,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:39:00,093 INFO L470 AbstractCegarLoop]: Abstraction has 20806 states and 137418 transitions. [2022-01-18 04:39:00,093 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 10 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:39:00,093 INFO L276 IsEmpty]: Start isEmpty. Operand 20806 states and 137418 transitions. [2022-01-18 04:39:00,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-01-18 04:39:00,153 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:39:00,153 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:39:00,168 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2022-01-18 04:39:00,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:39:00,353 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-18 04:39:00,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:39:00,354 INFO L85 PathProgramCache]: Analyzing trace with hash -2113015867, now seen corresponding path program 26 times [2022-01-18 04:39:00,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:39:00,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664532242] [2022-01-18 04:39:00,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:39:00,354 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:39:00,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:39:00,395 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-18 04:39:00,395 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:39:00,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664532242] [2022-01-18 04:39:00,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664532242] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:39:00,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1547561212] [2022-01-18 04:39:00,395 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 04:39:00,395 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:39:00,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:39:00,396 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) [2022-01-18 04:39:00,397 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-01-18 04:39:00,425 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 04:39:00,425 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:39:00,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-18 04:39:00,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:39:00,881 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-18 04:39:00,881 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:39:00,946 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-18 04:39:00,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1547561212] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:39:00,947 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:39:00,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 5] total 8 [2022-01-18 04:39:00,947 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458895635] [2022-01-18 04:39:00,947 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:39:00,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-18 04:39:00,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:39:00,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-18 04:39:00,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-01-18 04:39:00,947 INFO L87 Difference]: Start difference. First operand 20806 states and 137418 transitions. Second operand has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 8 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) [2022-01-18 04:39:01,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:39:01,437 INFO L93 Difference]: Finished difference Result 38386 states and 254116 transitions. [2022-01-18 04:39:01,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-18 04:39:01,437 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 8 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 [2022-01-18 04:39:01,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:39:01,612 INFO L225 Difference]: With dead ends: 38386 [2022-01-18 04:39:01,612 INFO L226 Difference]: Without dead ends: 37790 [2022-01-18 04:39:01,613 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 55 SyntacticMatches, 10 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-01-18 04:39:01,613 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 99 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 474 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 04:39:01,613 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 212 Invalid, 476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 474 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 04:39:01,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37790 states. [2022-01-18 04:39:02,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37790 to 31835. [2022-01-18 04:39:02,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31835 states, 31834 states have (on average 6.805648049255513) internal successors, (216651), 31834 states have internal predecessors, (216651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:39:02,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31835 states to 31835 states and 216651 transitions. [2022-01-18 04:39:02,734 INFO L78 Accepts]: Start accepts. Automaton has 31835 states and 216651 transitions. Word has length 33 [2022-01-18 04:39:02,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:39:02,734 INFO L470 AbstractCegarLoop]: Abstraction has 31835 states and 216651 transitions. [2022-01-18 04:39:02,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 8 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) [2022-01-18 04:39:02,735 INFO L276 IsEmpty]: Start isEmpty. Operand 31835 states and 216651 transitions. [2022-01-18 04:39:02,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-01-18 04:39:02,833 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:39:02,833 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:39:02,848 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2022-01-18 04:39:03,033 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,SelfDestructingSolverStorable32 [2022-01-18 04:39:03,034 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-18 04:39:03,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:39:03,034 INFO L85 PathProgramCache]: Analyzing trace with hash 1800076997, now seen corresponding path program 27 times [2022-01-18 04:39:03,034 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:39:03,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560140318] [2022-01-18 04:39:03,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:39:03,034 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:39:03,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:39:03,081 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-01-18 04:39:03,081 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:39:03,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560140318] [2022-01-18 04:39:03,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560140318] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:39:03,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1337649219] [2022-01-18 04:39:03,081 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 04:39:03,082 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:39:03,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:39:03,083 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) [2022-01-18 04:39:03,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-01-18 04:39:03,116 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 04:39:03,116 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:39:03,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-18 04:39:03,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:39:03,254 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-01-18 04:39:03,254 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:39:03,308 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-01-18 04:39:03,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1337649219] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:39:03,309 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:39:03,309 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 4] total 10 [2022-01-18 04:39:03,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132753521] [2022-01-18 04:39:03,309 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:39:03,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 04:39:03,309 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:39:03,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 04:39:03,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-01-18 04:39:03,309 INFO L87 Difference]: Start difference. First operand 31835 states and 216651 transitions. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 10 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:39:05,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:39:05,062 INFO L93 Difference]: Finished difference Result 76452 states and 499137 transitions. [2022-01-18 04:39:05,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-01-18 04:39:05,063 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 10 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have 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 [2022-01-18 04:39:05,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:39:05,874 INFO L225 Difference]: With dead ends: 76452 [2022-01-18 04:39:05,875 INFO L226 Difference]: Without dead ends: 71950 [2022-01-18 04:39:05,875 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 59 SyntacticMatches, 4 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=117, Invalid=813, Unknown=0, NotChecked=0, Total=930 [2022-01-18 04:39:05,875 INFO L933 BasicCegarLoop]: 132 mSDtfsCounter, 257 mSDsluCounter, 1943 mSDsCounter, 0 mSdLazyCounter, 1948 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 1029 SdHoareTripleChecker+Invalid, 1983 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1948 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 04:39:05,876 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [257 Valid, 1029 Invalid, 1983 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1948 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-18 04:39:05,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71950 states. [2022-01-18 04:39:07,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71950 to 45299. [2022-01-18 04:39:07,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45299 states, 45298 states have (on average 7.045123405006843) internal successors, (319130), 45298 states have internal predecessors, (319130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:39:07,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45299 states to 45299 states and 319130 transitions. [2022-01-18 04:39:07,772 INFO L78 Accepts]: Start accepts. Automaton has 45299 states and 319130 transitions. Word has length 33 [2022-01-18 04:39:07,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:39:07,772 INFO L470 AbstractCegarLoop]: Abstraction has 45299 states and 319130 transitions. [2022-01-18 04:39:07,773 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 10 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:39:07,773 INFO L276 IsEmpty]: Start isEmpty. Operand 45299 states and 319130 transitions. [2022-01-18 04:39:08,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-01-18 04:39:08,309 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:39:08,309 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:39:08,324 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-01-18 04:39:08,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:39:08,524 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-18 04:39:08,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:39:08,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1235120450, now seen corresponding path program 28 times [2022-01-18 04:39:08,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:39:08,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126802752] [2022-01-18 04:39:08,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:39:08,524 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:39:08,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:39:08,552 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-01-18 04:39:08,552 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:39:08,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126802752] [2022-01-18 04:39:08,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126802752] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:39:08,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2126743591] [2022-01-18 04:39:08,553 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 04:39:08,553 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:39:08,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:39:08,554 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) [2022-01-18 04:39:08,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-01-18 04:39:08,581 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 04:39:08,581 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:39:08,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 04:39:08,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:39:08,662 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-01-18 04:39:08,662 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:39:08,715 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-01-18 04:39:08,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2126743591] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:39:08,716 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:39:08,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 5] total 9 [2022-01-18 04:39:08,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667673533] [2022-01-18 04:39:08,716 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:39:08,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-18 04:39:08,716 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:39:08,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-18 04:39:08,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-01-18 04:39:08,716 INFO L87 Difference]: Start difference. First operand 45299 states and 319130 transitions. Second operand has 10 states, 10 states have (on average 5.6) internal successors, (56), 9 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) [2022-01-18 04:39:09,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:39:09,564 INFO L93 Difference]: Finished difference Result 71328 states and 479587 transitions. [2022-01-18 04:39:09,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-18 04:39:09,565 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 9 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 34 [2022-01-18 04:39:09,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:39:10,397 INFO L225 Difference]: With dead ends: 71328 [2022-01-18 04:39:10,397 INFO L226 Difference]: Without dead ends: 61764 [2022-01-18 04:39:10,397 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 59 SyntacticMatches, 6 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-01-18 04:39:10,398 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 110 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 596 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 04:39:10,398 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 248 Invalid, 597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 596 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 04:39:10,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61764 states. [2022-01-18 04:39:11,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61764 to 45298. [2022-01-18 04:39:11,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45298 states, 45297 states have (on average 6.9854957281939205) internal successors, (316422), 45297 states have internal predecessors, (316422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:39:12,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45298 states to 45298 states and 316422 transitions. [2022-01-18 04:39:12,161 INFO L78 Accepts]: Start accepts. Automaton has 45298 states and 316422 transitions. Word has length 34 [2022-01-18 04:39:12,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:39:12,161 INFO L470 AbstractCegarLoop]: Abstraction has 45298 states and 316422 transitions. [2022-01-18 04:39:12,161 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 9 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) [2022-01-18 04:39:12,162 INFO L276 IsEmpty]: Start isEmpty. Operand 45298 states and 316422 transitions. [2022-01-18 04:39:12,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-01-18 04:39:12,310 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:39:12,310 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:39:12,328 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-01-18 04:39:12,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:39:12,511 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-18 04:39:12,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:39:12,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1110638710, now seen corresponding path program 29 times [2022-01-18 04:39:12,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:39:12,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452401359] [2022-01-18 04:39:12,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:39:12,512 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:39:12,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:39:12,543 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-01-18 04:39:12,543 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:39:12,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452401359] [2022-01-18 04:39:12,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452401359] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:39:12,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1427950123] [2022-01-18 04:39:12,543 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 04:39:12,543 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:39:12,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:39:12,544 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) [2022-01-18 04:39:12,545 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-01-18 04:39:12,572 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 04:39:12,573 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:39:12,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 04:39:12,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:39:12,657 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-01-18 04:39:12,657 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:39:12,714 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-01-18 04:39:12,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1427950123] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:39:12,714 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:39:12,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-01-18 04:39:12,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323517425] [2022-01-18 04:39:12,714 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:39:12,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 04:39:12,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:39:12,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 04:39:12,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-01-18 04:39:12,715 INFO L87 Difference]: Start difference. First operand 45298 states and 316422 transitions. Second operand has 11 states, 11 states have (on average 5.0) internal successors, (55), 10 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) [2022-01-18 04:39:14,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:39:14,063 INFO L93 Difference]: Finished difference Result 79431 states and 527696 transitions. [2022-01-18 04:39:14,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-18 04:39:14,063 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 10 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 34 [2022-01-18 04:39:14,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:39:14,404 INFO L225 Difference]: With dead ends: 79431 [2022-01-18 04:39:14,404 INFO L226 Difference]: Without dead ends: 54866 [2022-01-18 04:39:14,405 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 57 SyntacticMatches, 7 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2022-01-18 04:39:14,405 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 178 mSDsluCounter, 560 mSDsCounter, 0 mSdLazyCounter, 649 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 04:39:14,405 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [178 Valid, 253 Invalid, 657 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 649 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 04:39:14,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54866 states. [2022-01-18 04:39:15,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54866 to 40122. [2022-01-18 04:39:15,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40122 states, 40121 states have (on average 6.923107599511478) internal successors, (277762), 40121 states have internal predecessors, (277762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:39:16,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40122 states to 40122 states and 277762 transitions. [2022-01-18 04:39:16,454 INFO L78 Accepts]: Start accepts. Automaton has 40122 states and 277762 transitions. Word has length 34 [2022-01-18 04:39:16,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:39:16,454 INFO L470 AbstractCegarLoop]: Abstraction has 40122 states and 277762 transitions. [2022-01-18 04:39:16,455 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 10 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) [2022-01-18 04:39:16,455 INFO L276 IsEmpty]: Start isEmpty. Operand 40122 states and 277762 transitions. [2022-01-18 04:39:16,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-01-18 04:39:16,592 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:39:16,592 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:39:16,608 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2022-01-18 04:39:16,797 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,SelfDestructingSolverStorable35 [2022-01-18 04:39:16,797 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-18 04:39:16,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:39:16,798 INFO L85 PathProgramCache]: Analyzing trace with hash -446438244, now seen corresponding path program 30 times [2022-01-18 04:39:16,798 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:39:16,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520620004] [2022-01-18 04:39:16,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:39:16,798 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:39:16,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:39:16,838 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-01-18 04:39:16,838 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:39:16,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520620004] [2022-01-18 04:39:16,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520620004] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:39:16,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [104190324] [2022-01-18 04:39:16,839 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 04:39:16,839 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:39:16,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:39:16,840 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) [2022-01-18 04:39:16,840 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-01-18 04:39:16,869 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 04:39:16,869 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:39:16,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 04:39:16,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:39:16,966 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-01-18 04:39:16,966 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:39:17,021 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-01-18 04:39:17,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [104190324] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:39:17,021 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:39:17,021 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 5] total 10 [2022-01-18 04:39:17,021 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049293290] [2022-01-18 04:39:17,021 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:39:17,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 04:39:17,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:39:17,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 04:39:17,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-01-18 04:39:17,022 INFO L87 Difference]: Start difference. First operand 40122 states and 277762 transitions. Second operand has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 10 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) [2022-01-18 04:39:18,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:39:18,416 INFO L93 Difference]: Finished difference Result 85865 states and 563740 transitions. [2022-01-18 04:39:18,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 04:39:18,416 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 10 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 34 [2022-01-18 04:39:18,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:39:18,829 INFO L225 Difference]: With dead ends: 85865 [2022-01-18 04:39:18,830 INFO L226 Difference]: Without dead ends: 62787 [2022-01-18 04:39:18,830 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 60 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2022-01-18 04:39:18,830 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 142 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 486 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 04:39:18,830 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [142 Valid, 210 Invalid, 489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 486 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 04:39:18,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62787 states. [2022-01-18 04:39:20,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62787 to 39220. [2022-01-18 04:39:20,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39220 states, 39219 states have (on average 6.795660266707463) internal successors, (266519), 39219 states have internal predecessors, (266519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:39:20,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39220 states to 39220 states and 266519 transitions. [2022-01-18 04:39:20,512 INFO L78 Accepts]: Start accepts. Automaton has 39220 states and 266519 transitions. Word has length 34 [2022-01-18 04:39:20,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:39:20,512 INFO L470 AbstractCegarLoop]: Abstraction has 39220 states and 266519 transitions. [2022-01-18 04:39:20,512 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 10 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) [2022-01-18 04:39:20,512 INFO L276 IsEmpty]: Start isEmpty. Operand 39220 states and 266519 transitions. [2022-01-18 04:39:21,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-01-18 04:39:21,066 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:39:21,066 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:39:21,092 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2022-01-18 04:39:21,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-01-18 04:39:21,266 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-18 04:39:21,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:39:21,267 INFO L85 PathProgramCache]: Analyzing trace with hash 422116352, now seen corresponding path program 31 times [2022-01-18 04:39:21,267 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:39:21,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424719747] [2022-01-18 04:39:21,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:39:21,267 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:39:21,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:39:21,298 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-01-18 04:39:21,298 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:39:21,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424719747] [2022-01-18 04:39:21,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424719747] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:39:21,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1701071985] [2022-01-18 04:39:21,299 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 04:39:21,299 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:39:21,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:39:21,300 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) [2022-01-18 04:39:21,301 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-01-18 04:39:21,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:39:21,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 04:39:21,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:39:21,433 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-01-18 04:39:21,433 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:39:21,491 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-01-18 04:39:21,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1701071985] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:39:21,491 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:39:21,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 5] total 10 [2022-01-18 04:39:21,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720015459] [2022-01-18 04:39:21,491 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:39:21,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 04:39:21,491 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:39:21,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 04:39:21,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-01-18 04:39:21,492 INFO L87 Difference]: Start difference. First operand 39220 states and 266519 transitions. Second operand has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 10 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) [2022-01-18 04:39:22,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:39:22,373 INFO L93 Difference]: Finished difference Result 76848 states and 503197 transitions. [2022-01-18 04:39:22,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 04:39:22,374 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 10 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 34 [2022-01-18 04:39:22,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:39:23,097 INFO L225 Difference]: With dead ends: 76848 [2022-01-18 04:39:23,097 INFO L226 Difference]: Without dead ends: 55886 [2022-01-18 04:39:23,098 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 60 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2022-01-18 04:39:23,098 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 123 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 529 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 04:39:23,098 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 224 Invalid, 532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 529 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 04:39:23,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55886 states. [2022-01-18 04:39:24,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55886 to 36632. [2022-01-18 04:39:24,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36632 states, 36631 states have (on average 6.734159591602741) internal successors, (246679), 36631 states have internal predecessors, (246679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:39:24,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36632 states to 36632 states and 246679 transitions. [2022-01-18 04:39:24,663 INFO L78 Accepts]: Start accepts. Automaton has 36632 states and 246679 transitions. Word has length 34 [2022-01-18 04:39:24,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:39:24,663 INFO L470 AbstractCegarLoop]: Abstraction has 36632 states and 246679 transitions. [2022-01-18 04:39:24,663 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 10 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) [2022-01-18 04:39:24,663 INFO L276 IsEmpty]: Start isEmpty. Operand 36632 states and 246679 transitions. [2022-01-18 04:39:24,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-01-18 04:39:24,784 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:39:24,784 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:39:24,800 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2022-01-18 04:39:24,987 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,SelfDestructingSolverStorable37 [2022-01-18 04:39:24,987 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-18 04:39:24,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:39:24,988 INFO L85 PathProgramCache]: Analyzing trace with hash -87356738, now seen corresponding path program 32 times [2022-01-18 04:39:24,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:39:24,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739086415] [2022-01-18 04:39:24,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:39:24,988 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:39:24,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:39:25,017 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-01-18 04:39:25,017 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:39:25,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739086415] [2022-01-18 04:39:25,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739086415] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:39:25,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [629203038] [2022-01-18 04:39:25,017 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 04:39:25,017 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:39:25,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:39:25,018 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) [2022-01-18 04:39:25,019 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-01-18 04:39:25,048 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 04:39:25,048 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:39:25,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 04:39:25,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:39:25,144 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-01-18 04:39:25,144 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:39:25,194 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-01-18 04:39:25,194 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [629203038] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:39:25,194 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:39:25,194 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 11 [2022-01-18 04:39:25,195 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069660631] [2022-01-18 04:39:25,195 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:39:25,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-18 04:39:25,195 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:39:25,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-18 04:39:25,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-01-18 04:39:25,195 INFO L87 Difference]: Start difference. First operand 36632 states and 246679 transitions. Second operand has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 11 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) [2022-01-18 04:39:26,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:39:26,356 INFO L93 Difference]: Finished difference Result 57373 states and 381185 transitions. [2022-01-18 04:39:26,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 04:39:26,356 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 11 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 34 [2022-01-18 04:39:26,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:39:26,690 INFO L225 Difference]: With dead ends: 57373 [2022-01-18 04:39:26,690 INFO L226 Difference]: Without dead ends: 52868 [2022-01-18 04:39:26,690 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 59 SyntacticMatches, 4 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2022-01-18 04:39:26,691 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 105 mSDsluCounter, 498 mSDsCounter, 0 mSdLazyCounter, 622 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 04:39:26,691 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 257 Invalid, 626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 622 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 04:39:26,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52868 states. [2022-01-18 04:39:27,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52868 to 36632. [2022-01-18 04:39:27,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36632 states, 36631 states have (on average 6.734159591602741) internal successors, (246679), 36631 states have internal predecessors, (246679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:39:28,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36632 states to 36632 states and 246679 transitions. [2022-01-18 04:39:28,137 INFO L78 Accepts]: Start accepts. Automaton has 36632 states and 246679 transitions. Word has length 34 [2022-01-18 04:39:28,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:39:28,137 INFO L470 AbstractCegarLoop]: Abstraction has 36632 states and 246679 transitions. [2022-01-18 04:39:28,138 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 11 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) [2022-01-18 04:39:28,138 INFO L276 IsEmpty]: Start isEmpty. Operand 36632 states and 246679 transitions. [2022-01-18 04:39:28,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-01-18 04:39:28,247 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:39:28,247 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:39:28,262 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2022-01-18 04:39:28,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-01-18 04:39:28,448 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-18 04:39:28,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:39:28,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1127109322, now seen corresponding path program 33 times [2022-01-18 04:39:28,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:39:28,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744285308] [2022-01-18 04:39:28,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:39:28,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:39:28,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:39:28,481 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-01-18 04:39:28,482 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:39:28,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744285308] [2022-01-18 04:39:28,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744285308] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:39:28,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1369763568] [2022-01-18 04:39:28,482 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 04:39:28,482 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:39:28,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:39:28,483 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) [2022-01-18 04:39:28,484 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-01-18 04:39:28,512 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 04:39:28,513 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:39:28,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-18 04:39:28,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:39:28,738 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-01-18 04:39:28,738 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:39:28,816 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-01-18 04:39:28,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1369763568] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:39:28,816 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:39:28,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 5] total 16 [2022-01-18 04:39:28,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100459248] [2022-01-18 04:39:28,816 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:39:28,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-18 04:39:28,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:39:28,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-18 04:39:28,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2022-01-18 04:39:28,817 INFO L87 Difference]: Start difference. First operand 36632 states and 246679 transitions. Second operand has 17 states, 17 states have (on average 4.470588235294118) internal successors, (76), 16 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:39:31,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:39:31,744 INFO L93 Difference]: Finished difference Result 88229 states and 577190 transitions. [2022-01-18 04:39:31,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-01-18 04:39:31,744 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.470588235294118) internal successors, (76), 16 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-01-18 04:39:31,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:39:32,199 INFO L225 Difference]: With dead ends: 88229 [2022-01-18 04:39:32,199 INFO L226 Difference]: Without dead ends: 80589 [2022-01-18 04:39:32,200 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 55 SyntacticMatches, 3 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1650 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=440, Invalid=4816, Unknown=0, NotChecked=0, Total=5256 [2022-01-18 04:39:32,200 INFO L933 BasicCegarLoop]: 145 mSDtfsCounter, 573 mSDsluCounter, 2417 mSDsCounter, 0 mSdLazyCounter, 3153 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 573 SdHoareTripleChecker+Valid, 1550 SdHoareTripleChecker+Invalid, 3284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 3153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-18 04:39:32,200 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [573 Valid, 1550 Invalid, 3284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 3153 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-18 04:39:32,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80589 states. [2022-01-18 04:39:34,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80589 to 42432. [2022-01-18 04:39:34,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42432 states, 42431 states have (on average 6.8397869482218185) internal successors, (290219), 42431 states have internal predecessors, (290219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:39:34,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42432 states to 42432 states and 290219 transitions. [2022-01-18 04:39:34,399 INFO L78 Accepts]: Start accepts. Automaton has 42432 states and 290219 transitions. Word has length 34 [2022-01-18 04:39:34,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:39:34,400 INFO L470 AbstractCegarLoop]: Abstraction has 42432 states and 290219 transitions. [2022-01-18 04:39:34,400 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.470588235294118) internal successors, (76), 16 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:39:34,400 INFO L276 IsEmpty]: Start isEmpty. Operand 42432 states and 290219 transitions. [2022-01-18 04:39:34,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-01-18 04:39:34,532 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:39:34,532 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:39:34,547 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2022-01-18 04:39:34,747 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,SelfDestructingSolverStorable39 [2022-01-18 04:39:34,747 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-18 04:39:34,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:39:34,748 INFO L85 PathProgramCache]: Analyzing trace with hash -765936478, now seen corresponding path program 34 times [2022-01-18 04:39:34,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:39:34,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289208102] [2022-01-18 04:39:34,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:39:34,748 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:39:34,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:39:34,772 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-01-18 04:39:34,772 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:39:34,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289208102] [2022-01-18 04:39:34,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289208102] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:39:34,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1961067455] [2022-01-18 04:39:34,772 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 04:39:34,772 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:39:34,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:39:34,773 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) [2022-01-18 04:39:34,774 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-01-18 04:39:34,803 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 04:39:34,803 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:39:34,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 04:39:34,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:39:34,874 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-01-18 04:39:34,874 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:39:34,930 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-01-18 04:39:34,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1961067455] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:39:34,931 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:39:34,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 5] total 9 [2022-01-18 04:39:34,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557132941] [2022-01-18 04:39:34,931 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:39:34,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-18 04:39:34,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:39:34,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-18 04:39:34,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-01-18 04:39:34,931 INFO L87 Difference]: Start difference. First operand 42432 states and 290219 transitions. Second operand has 10 states, 10 states have (on average 5.8) internal successors, (58), 9 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) [2022-01-18 04:39:36,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:39:36,247 INFO L93 Difference]: Finished difference Result 81147 states and 534322 transitions. [2022-01-18 04:39:36,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-18 04:39:36,247 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 9 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 34 [2022-01-18 04:39:36,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:39:36,655 INFO L225 Difference]: With dead ends: 81147 [2022-01-18 04:39:36,655 INFO L226 Difference]: Without dead ends: 63386 [2022-01-18 04:39:36,655 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 59 SyntacticMatches, 6 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2022-01-18 04:39:36,656 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 160 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 492 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 04:39:36,656 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [160 Valid, 216 Invalid, 497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 492 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 04:39:36,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63386 states. [2022-01-18 04:39:38,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63386 to 42432. [2022-01-18 04:39:38,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42432 states, 42431 states have (on average 6.815229431312012) internal successors, (289177), 42431 states have internal predecessors, (289177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:39:39,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42432 states to 42432 states and 289177 transitions. [2022-01-18 04:39:39,070 INFO L78 Accepts]: Start accepts. Automaton has 42432 states and 289177 transitions. Word has length 34 [2022-01-18 04:39:39,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:39:39,070 INFO L470 AbstractCegarLoop]: Abstraction has 42432 states and 289177 transitions. [2022-01-18 04:39:39,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 9 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) [2022-01-18 04:39:39,070 INFO L276 IsEmpty]: Start isEmpty. Operand 42432 states and 289177 transitions. [2022-01-18 04:39:39,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-01-18 04:39:39,212 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:39:39,213 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:39:39,228 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2022-01-18 04:39:39,413 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,SelfDestructingSolverStorable40 [2022-01-18 04:39:39,413 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-18 04:39:39,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:39:39,413 INFO L85 PathProgramCache]: Analyzing trace with hash 102618118, now seen corresponding path program 35 times [2022-01-18 04:39:39,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:39:39,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093017489] [2022-01-18 04:39:39,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:39:39,414 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:39:39,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:39:39,442 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-01-18 04:39:39,442 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:39:39,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093017489] [2022-01-18 04:39:39,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093017489] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:39:39,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [735847106] [2022-01-18 04:39:39,442 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 04:39:39,442 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:39:39,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:39:39,443 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) [2022-01-18 04:39:39,444 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-01-18 04:39:39,471 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-01-18 04:39:39,472 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:39:39,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 04:39:39,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:39:39,552 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-01-18 04:39:39,552 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:39:39,604 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-01-18 04:39:39,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [735847106] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:39:39,604 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:39:39,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 5] total 9 [2022-01-18 04:39:39,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773283417] [2022-01-18 04:39:39,605 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:39:39,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-18 04:39:39,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:39:39,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-18 04:39:39,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-01-18 04:39:39,605 INFO L87 Difference]: Start difference. First operand 42432 states and 289177 transitions. Second operand has 10 states, 10 states have (on average 5.8) internal successors, (58), 9 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) [2022-01-18 04:39:40,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:39:40,811 INFO L93 Difference]: Finished difference Result 71541 states and 473268 transitions. [2022-01-18 04:39:40,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-18 04:39:40,812 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 9 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 34 [2022-01-18 04:39:40,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:39:41,265 INFO L225 Difference]: With dead ends: 71541 [2022-01-18 04:39:41,266 INFO L226 Difference]: Without dead ends: 64074 [2022-01-18 04:39:41,266 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 59 SyntacticMatches, 6 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-01-18 04:39:41,266 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 106 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 04:39:41,266 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 235 Invalid, 584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 04:39:41,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64074 states. [2022-01-18 04:39:42,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64074 to 41390. [2022-01-18 04:39:42,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41390 states, 41389 states have (on average 6.742564449491411) internal successors, (279068), 41389 states have internal predecessors, (279068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:39:42,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41390 states to 41390 states and 279068 transitions. [2022-01-18 04:39:42,877 INFO L78 Accepts]: Start accepts. Automaton has 41390 states and 279068 transitions. Word has length 34 [2022-01-18 04:39:42,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:39:42,877 INFO L470 AbstractCegarLoop]: Abstraction has 41390 states and 279068 transitions. [2022-01-18 04:39:42,877 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 9 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) [2022-01-18 04:39:42,877 INFO L276 IsEmpty]: Start isEmpty. Operand 41390 states and 279068 transitions. [2022-01-18 04:39:43,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-01-18 04:39:43,022 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:39:43,022 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:39:43,038 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2022-01-18 04:39:43,222 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,SelfDestructingSolverStorable41 [2022-01-18 04:39:43,222 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-18 04:39:43,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:39:43,223 INFO L85 PathProgramCache]: Analyzing trace with hash -406854972, now seen corresponding path program 36 times [2022-01-18 04:39:43,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:39:43,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305370521] [2022-01-18 04:39:43,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:39:43,223 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:39:43,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:39:43,259 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-01-18 04:39:43,259 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:39:43,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305370521] [2022-01-18 04:39:43,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305370521] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:39:43,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [872104220] [2022-01-18 04:39:43,260 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 04:39:43,260 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:39:43,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:39:43,261 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) [2022-01-18 04:39:43,262 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-01-18 04:39:43,290 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 04:39:43,291 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:39:43,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 04:39:43,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:39:43,385 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-01-18 04:39:43,385 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:39:43,444 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-01-18 04:39:43,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [872104220] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:39:43,444 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:39:43,444 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 6] total 10 [2022-01-18 04:39:43,444 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582579735] [2022-01-18 04:39:43,445 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:39:43,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 04:39:43,445 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:39:43,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 04:39:43,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-01-18 04:39:43,446 INFO L87 Difference]: Start difference. First operand 41390 states and 279068 transitions. Second operand has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 10 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) [2022-01-18 04:39:45,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:39:45,083 INFO L93 Difference]: Finished difference Result 107476 states and 703763 transitions. [2022-01-18 04:39:45,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-18 04:39:45,083 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 10 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 34 [2022-01-18 04:39:45,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:39:45,425 INFO L225 Difference]: With dead ends: 107476 [2022-01-18 04:39:45,425 INFO L226 Difference]: Without dead ends: 59104 [2022-01-18 04:39:45,426 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 58 SyntacticMatches, 6 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2022-01-18 04:39:45,426 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 220 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 573 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 04:39:45,426 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [220 Valid, 238 Invalid, 582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 573 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 04:39:46,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59104 states. [2022-01-18 04:39:46,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59104 to 35138. [2022-01-18 04:39:47,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35138 states, 35137 states have (on average 6.660898767680792) internal successors, (234044), 35137 states have internal predecessors, (234044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:39:47,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35138 states to 35138 states and 234044 transitions. [2022-01-18 04:39:47,566 INFO L78 Accepts]: Start accepts. Automaton has 35138 states and 234044 transitions. Word has length 34 [2022-01-18 04:39:47,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:39:47,566 INFO L470 AbstractCegarLoop]: Abstraction has 35138 states and 234044 transitions. [2022-01-18 04:39:47,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 10 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) [2022-01-18 04:39:47,566 INFO L276 IsEmpty]: Start isEmpty. Operand 35138 states and 234044 transitions. [2022-01-18 04:39:47,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-01-18 04:39:47,669 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:39:47,669 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:39:47,683 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2022-01-18 04:39:47,869 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,SelfDestructingSolverStorable42 [2022-01-18 04:39:47,869 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-18 04:39:47,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:39:47,870 INFO L85 PathProgramCache]: Analyzing trace with hash 1488821512, now seen corresponding path program 37 times [2022-01-18 04:39:47,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:39:47,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256222497] [2022-01-18 04:39:47,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:39:47,870 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:39:47,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:39:47,901 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-01-18 04:39:47,901 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:39:47,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256222497] [2022-01-18 04:39:47,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256222497] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:39:47,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [294809347] [2022-01-18 04:39:47,901 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 04:39:47,902 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:39:47,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:39:47,902 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) [2022-01-18 04:39:47,903 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-01-18 04:39:47,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:39:47,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 04:39:47,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:39:48,021 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-01-18 04:39:48,022 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:39:48,078 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-01-18 04:39:48,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [294809347] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:39:48,078 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:39:48,078 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-01-18 04:39:48,078 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957919153] [2022-01-18 04:39:48,078 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:39:48,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 04:39:48,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:39:48,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 04:39:48,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-01-18 04:39:48,079 INFO L87 Difference]: Start difference. First operand 35138 states and 234044 transitions. Second operand has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 10 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:39:48,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:39:48,689 INFO L93 Difference]: Finished difference Result 46655 states and 309604 transitions. [2022-01-18 04:39:48,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-18 04:39:48,689 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 10 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-01-18 04:39:48,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:39:48,911 INFO L225 Difference]: With dead ends: 46655 [2022-01-18 04:39:48,911 INFO L226 Difference]: Without dead ends: 41390 [2022-01-18 04:39:48,911 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 57 SyntacticMatches, 7 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2022-01-18 04:39:48,911 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 105 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 04:39:48,912 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 247 Invalid, 592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 04:39:48,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41390 states. [2022-01-18 04:39:49,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41390 to 37222. [2022-01-18 04:39:50,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37222 states, 37221 states have (on average 6.6631740146691385) internal successors, (248010), 37221 states have internal predecessors, (248010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:39:50,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37222 states to 37222 states and 248010 transitions. [2022-01-18 04:39:50,580 INFO L78 Accepts]: Start accepts. Automaton has 37222 states and 248010 transitions. Word has length 34 [2022-01-18 04:39:50,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:39:50,580 INFO L470 AbstractCegarLoop]: Abstraction has 37222 states and 248010 transitions. [2022-01-18 04:39:50,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 10 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:39:50,580 INFO L276 IsEmpty]: Start isEmpty. Operand 37222 states and 248010 transitions. [2022-01-18 04:39:50,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-01-18 04:39:50,695 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:39:50,695 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:39:50,710 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2022-01-18 04:39:50,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:39:50,899 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-18 04:39:50,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:39:50,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1002227485, now seen corresponding path program 38 times [2022-01-18 04:39:50,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:39:50,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371177952] [2022-01-18 04:39:50,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:39:50,903 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:39:50,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:39:50,951 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-01-18 04:39:50,951 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:39:50,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371177952] [2022-01-18 04:39:50,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371177952] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:39:50,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [350283241] [2022-01-18 04:39:50,951 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 04:39:50,952 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:39:50,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:39:50,952 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) [2022-01-18 04:39:50,954 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-01-18 04:39:50,983 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 04:39:50,983 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:39:50,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-18 04:39:50,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:39:51,140 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-01-18 04:39:51,140 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:39:51,203 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-01-18 04:39:51,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [350283241] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:39:51,203 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:39:51,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 5] total 12 [2022-01-18 04:39:51,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455572387] [2022-01-18 04:39:51,203 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:39:51,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-18 04:39:51,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:39:51,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-18 04:39:51,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-01-18 04:39:51,204 INFO L87 Difference]: Start difference. First operand 37222 states and 248010 transitions. Second operand has 13 states, 13 states have (on average 6.461538461538462) internal successors, (84), 12 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:39:53,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:39:53,719 INFO L93 Difference]: Finished difference Result 117742 states and 763520 transitions. [2022-01-18 04:39:53,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-01-18 04:39:53,720 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.461538461538462) internal successors, (84), 12 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2022-01-18 04:39:53,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:39:54,454 INFO L225 Difference]: With dead ends: 117742 [2022-01-18 04:39:54,454 INFO L226 Difference]: Without dead ends: 111949 [2022-01-18 04:39:54,454 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 61 SyntacticMatches, 4 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=162, Invalid=1478, Unknown=0, NotChecked=0, Total=1640 [2022-01-18 04:39:54,455 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 294 mSDsluCounter, 2370 mSDsCounter, 0 mSdLazyCounter, 2426 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 1303 SdHoareTripleChecker+Invalid, 2452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 2426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 04:39:54,456 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [294 Valid, 1303 Invalid, 2452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 2426 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 04:39:54,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111949 states. [2022-01-18 04:39:57,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111949 to 73250. [2022-01-18 04:39:57,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73250 states, 73249 states have (on average 6.958743464074595) internal successors, (509721), 73249 states have internal predecessors, (509721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:39:58,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73250 states to 73250 states and 509721 transitions. [2022-01-18 04:39:58,255 INFO L78 Accepts]: Start accepts. Automaton has 73250 states and 509721 transitions. Word has length 35 [2022-01-18 04:39:58,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:39:58,255 INFO L470 AbstractCegarLoop]: Abstraction has 73250 states and 509721 transitions. [2022-01-18 04:39:58,255 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.461538461538462) internal successors, (84), 12 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:39:58,255 INFO L276 IsEmpty]: Start isEmpty. Operand 73250 states and 509721 transitions. [2022-01-18 04:39:58,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-01-18 04:39:58,547 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:39:58,547 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:39:58,563 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2022-01-18 04:39:58,748 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:39:58,748 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-18 04:39:58,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:39:58,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1664851718, now seen corresponding path program 39 times [2022-01-18 04:39:58,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:39:58,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019286878] [2022-01-18 04:39:58,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:39:58,748 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:39:58,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:39:58,781 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-01-18 04:39:58,782 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:39:58,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019286878] [2022-01-18 04:39:58,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019286878] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:39:58,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1826252252] [2022-01-18 04:39:58,782 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 04:39:58,782 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:39:58,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:39:58,783 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) [2022-01-18 04:39:58,785 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2022-01-18 04:39:58,815 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 04:39:58,815 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:39:58,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 04:39:58,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:39:58,927 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-01-18 04:39:58,927 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:39:58,992 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-01-18 04:39:58,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1826252252] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:39:58,993 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:39:58,993 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 6] total 11 [2022-01-18 04:39:58,993 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177194825] [2022-01-18 04:39:58,993 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:39:58,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-18 04:39:58,993 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:39:58,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-18 04:39:58,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-01-18 04:39:58,994 INFO L87 Difference]: Start difference. First operand 73250 states and 509721 transitions. Second operand has 12 states, 12 states have (on average 4.75) internal successors, (57), 11 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:40:00,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:40:00,817 INFO L93 Difference]: Finished difference Result 97805 states and 659980 transitions. [2022-01-18 04:40:00,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 04:40:00,817 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 11 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-01-18 04:40:00,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:40:01,447 INFO L225 Difference]: With dead ends: 97805 [2022-01-18 04:40:01,448 INFO L226 Difference]: Without dead ends: 92064 [2022-01-18 04:40:01,448 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 60 SyntacticMatches, 9 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-01-18 04:40:01,448 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 130 mSDsluCounter, 976 mSDsCounter, 0 mSdLazyCounter, 989 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 991 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 04:40:01,448 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [130 Valid, 449 Invalid, 991 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 989 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 04:40:01,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92064 states. [2022-01-18 04:40:03,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92064 to 74286. [2022-01-18 04:40:04,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74286 states, 74285 states have (on average 6.894581678669987) internal successors, (512164), 74285 states have internal predecessors, (512164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:40:04,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74286 states to 74286 states and 512164 transitions. [2022-01-18 04:40:04,998 INFO L78 Accepts]: Start accepts. Automaton has 74286 states and 512164 transitions. Word has length 36 [2022-01-18 04:40:04,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:40:04,998 INFO L470 AbstractCegarLoop]: Abstraction has 74286 states and 512164 transitions. [2022-01-18 04:40:04,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 11 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:40:04,998 INFO L276 IsEmpty]: Start isEmpty. Operand 74286 states and 512164 transitions. [2022-01-18 04:40:05,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-01-18 04:40:05,332 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:40:05,333 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:40:05,350 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2022-01-18 04:40:05,533 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,SelfDestructingSolverStorable45 [2022-01-18 04:40:05,533 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-18 04:40:05,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:40:05,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1427550028, now seen corresponding path program 40 times [2022-01-18 04:40:05,534 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:40:05,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470990488] [2022-01-18 04:40:05,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:40:05,534 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:40:05,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:40:05,580 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-01-18 04:40:05,580 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:40:05,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470990488] [2022-01-18 04:40:05,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470990488] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:40:05,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1099350255] [2022-01-18 04:40:05,581 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 04:40:05,581 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:40:05,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:40:05,582 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) [2022-01-18 04:40:05,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2022-01-18 04:40:05,615 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 04:40:05,615 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:40:05,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 04:40:05,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:40:05,735 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-01-18 04:40:05,735 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:40:05,812 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-01-18 04:40:05,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1099350255] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:40:05,812 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:40:05,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2022-01-18 04:40:05,812 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970553416] [2022-01-18 04:40:05,812 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:40:05,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-18 04:40:05,812 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:40:05,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-18 04:40:05,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-18 04:40:05,813 INFO L87 Difference]: Start difference. First operand 74286 states and 512164 transitions. Second operand has 14 states, 14 states have (on average 4.0) internal successors, (56), 13 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) [2022-01-18 04:40:07,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:40:07,687 INFO L93 Difference]: Finished difference Result 103074 states and 691482 transitions. [2022-01-18 04:40:07,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 04:40:07,687 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.0) internal successors, (56), 13 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 36 [2022-01-18 04:40:07,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:40:08,239 INFO L225 Difference]: With dead ends: 103074 [2022-01-18 04:40:08,239 INFO L226 Difference]: Without dead ends: 85288 [2022-01-18 04:40:08,239 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 57 SyntacticMatches, 10 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2022-01-18 04:40:08,240 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 287 mSDsluCounter, 897 mSDsCounter, 0 mSdLazyCounter, 996 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 1009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 996 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 04:40:08,240 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [287 Valid, 462 Invalid, 1009 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 996 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 04:40:08,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85288 states. [2022-01-18 04:40:10,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85288 to 65821. [2022-01-18 04:40:10,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65821 states, 65820 states have (on average 6.872622303251291) internal successors, (452356), 65820 states have internal predecessors, (452356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:40:11,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65821 states to 65821 states and 452356 transitions. [2022-01-18 04:40:11,113 INFO L78 Accepts]: Start accepts. Automaton has 65821 states and 452356 transitions. Word has length 36 [2022-01-18 04:40:11,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:40:11,113 INFO L470 AbstractCegarLoop]: Abstraction has 65821 states and 452356 transitions. [2022-01-18 04:40:11,113 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.0) internal successors, (56), 13 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) [2022-01-18 04:40:11,113 INFO L276 IsEmpty]: Start isEmpty. Operand 65821 states and 452356 transitions. [2022-01-18 04:40:11,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-01-18 04:40:11,346 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:40:11,346 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:40:11,361 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2022-01-18 04:40:11,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2022-01-18 04:40:11,547 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-18 04:40:11,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:40:11,547 INFO L85 PathProgramCache]: Analyzing trace with hash -618057222, now seen corresponding path program 41 times [2022-01-18 04:40:11,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:40:11,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985028163] [2022-01-18 04:40:11,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:40:11,548 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:40:11,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:40:11,581 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-01-18 04:40:11,582 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:40:11,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985028163] [2022-01-18 04:40:11,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985028163] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:40:11,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1209946753] [2022-01-18 04:40:11,582 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 04:40:11,582 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:40:11,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:40:11,583 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) [2022-01-18 04:40:11,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2022-01-18 04:40:11,613 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-01-18 04:40:11,613 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:40:11,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 04:40:11,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:40:11,726 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-01-18 04:40:11,726 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:40:11,791 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-01-18 04:40:11,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1209946753] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:40:11,792 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:40:11,792 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 6] total 12 [2022-01-18 04:40:11,792 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048418665] [2022-01-18 04:40:11,792 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:40:11,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-18 04:40:11,792 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:40:11,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-18 04:40:11,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2022-01-18 04:40:11,792 INFO L87 Difference]: Start difference. First operand 65821 states and 452356 transitions. Second operand has 13 states, 13 states have (on average 4.538461538461538) internal successors, (59), 12 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:40:13,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:40:13,440 INFO L93 Difference]: Finished difference Result 97148 states and 645553 transitions. [2022-01-18 04:40:13,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-18 04:40:13,440 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.538461538461538) internal successors, (59), 12 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have 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 [2022-01-18 04:40:13,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:40:14,485 INFO L225 Difference]: With dead ends: 97148 [2022-01-18 04:40:14,485 INFO L226 Difference]: Without dead ends: 86980 [2022-01-18 04:40:14,485 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 61 SyntacticMatches, 7 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2022-01-18 04:40:14,486 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 166 mSDsluCounter, 841 mSDsCounter, 0 mSdLazyCounter, 867 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 871 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 867 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 04:40:14,486 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [166 Valid, 396 Invalid, 871 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 867 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 04:40:14,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86980 states. [2022-01-18 04:40:16,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86980 to 65822. [2022-01-18 04:40:16,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65822 states, 65821 states have (on average 6.7954300299296575) internal successors, (447282), 65821 states have internal predecessors, (447282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:40:17,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65822 states to 65822 states and 447282 transitions. [2022-01-18 04:40:17,492 INFO L78 Accepts]: Start accepts. Automaton has 65822 states and 447282 transitions. Word has length 36 [2022-01-18 04:40:17,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:40:17,493 INFO L470 AbstractCegarLoop]: Abstraction has 65822 states and 447282 transitions. [2022-01-18 04:40:17,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.538461538461538) internal successors, (59), 12 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:40:17,493 INFO L276 IsEmpty]: Start isEmpty. Operand 65822 states and 447282 transitions. [2022-01-18 04:40:17,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-01-18 04:40:17,774 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:40:17,774 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:40:17,790 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2022-01-18 04:40:17,975 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,SelfDestructingSolverStorable47 [2022-01-18 04:40:17,975 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-18 04:40:17,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:40:17,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1298708386, now seen corresponding path program 42 times [2022-01-18 04:40:17,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:40:17,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705821801] [2022-01-18 04:40:17,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:40:17,975 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:40:17,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:40:18,012 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-01-18 04:40:18,013 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:40:18,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705821801] [2022-01-18 04:40:18,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705821801] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:40:18,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [316288754] [2022-01-18 04:40:18,013 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 04:40:18,013 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:40:18,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:40:18,014 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) [2022-01-18 04:40:18,042 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2022-01-18 04:40:18,053 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 04:40:18,053 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:40:18,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 04:40:18,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:40:18,170 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-01-18 04:40:18,170 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:40:18,229 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-01-18 04:40:18,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [316288754] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:40:18,230 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:40:18,230 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 6] total 12 [2022-01-18 04:40:18,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374894267] [2022-01-18 04:40:18,230 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:40:18,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-18 04:40:18,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:40:18,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-18 04:40:18,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2022-01-18 04:40:18,231 INFO L87 Difference]: Start difference. First operand 65822 states and 447282 transitions. Second operand has 13 states, 13 states have (on average 4.538461538461538) internal successors, (59), 12 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:40:20,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:40:20,172 INFO L93 Difference]: Finished difference Result 98844 states and 653962 transitions. [2022-01-18 04:40:20,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-18 04:40:20,172 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.538461538461538) internal successors, (59), 12 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have 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 [2022-01-18 04:40:20,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:40:20,710 INFO L225 Difference]: With dead ends: 98844 [2022-01-18 04:40:20,710 INFO L226 Difference]: Without dead ends: 84448 [2022-01-18 04:40:20,710 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 61 SyntacticMatches, 7 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2022-01-18 04:40:20,710 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 182 mSDsluCounter, 946 mSDsCounter, 0 mSdLazyCounter, 1022 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 1028 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1022 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 04:40:20,710 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [182 Valid, 446 Invalid, 1028 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1022 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 04:40:20,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84448 states. [2022-01-18 04:40:23,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84448 to 65822. [2022-01-18 04:40:23,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65822 states, 65821 states have (on average 6.769723948283982) internal successors, (445590), 65821 states have internal predecessors, (445590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:40:23,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65822 states to 65822 states and 445590 transitions. [2022-01-18 04:40:23,638 INFO L78 Accepts]: Start accepts. Automaton has 65822 states and 445590 transitions. Word has length 36 [2022-01-18 04:40:23,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:40:23,638 INFO L470 AbstractCegarLoop]: Abstraction has 65822 states and 445590 transitions. [2022-01-18 04:40:23,638 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.538461538461538) internal successors, (59), 12 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:40:23,638 INFO L276 IsEmpty]: Start isEmpty. Operand 65822 states and 445590 transitions. [2022-01-18 04:40:23,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-01-18 04:40:23,887 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:40:23,887 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:40:23,905 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2022-01-18 04:40:24,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:40:24,088 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-18 04:40:24,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:40:24,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1985141660, now seen corresponding path program 43 times [2022-01-18 04:40:24,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:40:24,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332923588] [2022-01-18 04:40:24,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:40:24,088 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:40:24,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:40:24,135 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-01-18 04:40:24,135 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:40:24,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332923588] [2022-01-18 04:40:24,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332923588] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:40:24,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [312013216] [2022-01-18 04:40:24,135 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 04:40:24,135 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:40:24,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:40:24,152 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) [2022-01-18 04:40:24,153 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2022-01-18 04:40:24,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:40:24,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 04:40:24,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:40:24,308 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-01-18 04:40:24,308 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:40:24,371 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-01-18 04:40:24,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [312013216] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:40:24,371 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:40:24,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 7] total 13 [2022-01-18 04:40:24,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120356692] [2022-01-18 04:40:24,371 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:40:24,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-18 04:40:24,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:40:24,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-18 04:40:24,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-01-18 04:40:24,372 INFO L87 Difference]: Start difference. First operand 65822 states and 445590 transitions. Second operand has 14 states, 14 states have (on average 4.214285714285714) internal successors, (59), 13 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:40:26,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:40:26,005 INFO L93 Difference]: Finished difference Result 92059 states and 611851 transitions. [2022-01-18 04:40:26,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-18 04:40:26,005 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.214285714285714) internal successors, (59), 13 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have 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 [2022-01-18 04:40:26,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:40:27,044 INFO L225 Difference]: With dead ends: 92059 [2022-01-18 04:40:27,044 INFO L226 Difference]: Without dead ends: 90364 [2022-01-18 04:40:27,045 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 60 SyntacticMatches, 7 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2022-01-18 04:40:27,045 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 155 mSDsluCounter, 867 mSDsCounter, 0 mSdLazyCounter, 973 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 973 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 04:40:27,046 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [155 Valid, 428 Invalid, 979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 973 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 04:40:27,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90364 states. [2022-01-18 04:40:28,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90364 to 65822. [2022-01-18 04:40:29,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65822 states, 65821 states have (on average 6.769723948283982) internal successors, (445590), 65821 states have internal predecessors, (445590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:40:29,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65822 states to 65822 states and 445590 transitions. [2022-01-18 04:40:29,948 INFO L78 Accepts]: Start accepts. Automaton has 65822 states and 445590 transitions. Word has length 36 [2022-01-18 04:40:29,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:40:29,950 INFO L470 AbstractCegarLoop]: Abstraction has 65822 states and 445590 transitions. [2022-01-18 04:40:29,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.214285714285714) internal successors, (59), 13 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:40:29,951 INFO L276 IsEmpty]: Start isEmpty. Operand 65822 states and 445590 transitions. [2022-01-18 04:40:30,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-01-18 04:40:30,218 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:40:30,218 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:40:30,243 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2022-01-18 04:40:30,431 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2022-01-18 04:40:30,431 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-18 04:40:30,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:40:30,432 INFO L85 PathProgramCache]: Analyzing trace with hash -279516632, now seen corresponding path program 44 times [2022-01-18 04:40:30,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:40:30,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062902605] [2022-01-18 04:40:30,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:40:30,432 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:40:30,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:40:30,464 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-01-18 04:40:30,464 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:40:30,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062902605] [2022-01-18 04:40:30,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062902605] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:40:30,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [238556329] [2022-01-18 04:40:30,465 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 04:40:30,465 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:40:30,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:40:30,466 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) [2022-01-18 04:40:30,468 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2022-01-18 04:40:30,498 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 04:40:30,498 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:40:30,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 04:40:30,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:40:30,624 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-01-18 04:40:30,625 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:40:30,684 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-01-18 04:40:30,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [238556329] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:40:30,684 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:40:30,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 6] total 13 [2022-01-18 04:40:30,684 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342760533] [2022-01-18 04:40:30,684 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:40:30,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-18 04:40:30,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:40:30,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-18 04:40:30,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-01-18 04:40:30,685 INFO L87 Difference]: Start difference. First operand 65822 states and 445590 transitions. Second operand has 14 states, 14 states have (on average 4.285714285714286) internal successors, (60), 13 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:40:32,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:40:32,855 INFO L93 Difference]: Finished difference Result 115771 states and 758340 transitions. [2022-01-18 04:40:32,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-18 04:40:32,855 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.285714285714286) internal successors, (60), 13 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-01-18 04:40:32,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:40:33,575 INFO L225 Difference]: With dead ends: 115771 [2022-01-18 04:40:33,575 INFO L226 Difference]: Without dead ends: 103060 [2022-01-18 04:40:33,576 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 61 SyntacticMatches, 6 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2022-01-18 04:40:33,576 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 243 mSDsluCounter, 1035 mSDsCounter, 0 mSdLazyCounter, 1120 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 1129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 04:40:33,576 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [243 Valid, 517 Invalid, 1129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1120 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 04:40:33,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103060 states. [2022-01-18 04:40:36,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103060 to 64975. [2022-01-18 04:40:36,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64975 states, 64974 states have (on average 6.747668298088466) internal successors, (438423), 64974 states have internal predecessors, (438423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:40:37,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64975 states to 64975 states and 438423 transitions. [2022-01-18 04:40:37,014 INFO L78 Accepts]: Start accepts. Automaton has 64975 states and 438423 transitions. Word has length 36 [2022-01-18 04:40:37,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:40:37,015 INFO L470 AbstractCegarLoop]: Abstraction has 64975 states and 438423 transitions. [2022-01-18 04:40:37,015 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.285714285714286) internal successors, (60), 13 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:40:37,015 INFO L276 IsEmpty]: Start isEmpty. Operand 64975 states and 438423 transitions. [2022-01-18 04:40:37,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-01-18 04:40:37,921 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:40:37,922 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:40:37,964 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2022-01-18 04:40:38,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:40:38,135 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-18 04:40:38,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:40:38,136 INFO L85 PathProgramCache]: Analyzing trace with hash -960167796, now seen corresponding path program 45 times [2022-01-18 04:40:38,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:40:38,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899244191] [2022-01-18 04:40:38,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:40:38,136 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:40:38,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:40:38,178 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-01-18 04:40:38,178 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:40:38,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899244191] [2022-01-18 04:40:38,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899244191] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:40:38,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1347483059] [2022-01-18 04:40:38,178 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 04:40:38,178 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:40:38,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:40:38,179 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) [2022-01-18 04:40:38,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2022-01-18 04:40:38,209 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 04:40:38,209 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:40:38,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 04:40:38,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:40:38,332 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-01-18 04:40:38,332 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:40:38,396 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-01-18 04:40:38,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1347483059] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:40:38,397 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:40:38,397 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 6] total 13 [2022-01-18 04:40:38,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147042735] [2022-01-18 04:40:38,397 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:40:38,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-18 04:40:38,397 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:40:38,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-18 04:40:38,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-01-18 04:40:38,399 INFO L87 Difference]: Start difference. First operand 64975 states and 438423 transitions. Second operand has 14 states, 14 states have (on average 4.285714285714286) internal successors, (60), 13 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:40:40,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:40:40,356 INFO L93 Difference]: Finished difference Result 102225 states and 669079 transitions. [2022-01-18 04:40:40,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-18 04:40:40,357 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.285714285714286) internal successors, (60), 13 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-01-18 04:40:40,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:40:40,965 INFO L225 Difference]: With dead ends: 102225 [2022-01-18 04:40:40,965 INFO L226 Difference]: Without dead ends: 89525 [2022-01-18 04:40:40,966 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 61 SyntacticMatches, 6 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2022-01-18 04:40:40,966 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 168 mSDsluCounter, 1006 mSDsCounter, 0 mSdLazyCounter, 1029 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 1034 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1029 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 04:40:40,966 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [168 Valid, 453 Invalid, 1034 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1029 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 04:40:41,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89525 states. [2022-01-18 04:40:43,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89525 to 66667. [2022-01-18 04:40:43,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66667 states, 66666 states have (on average 6.651741517415174) internal successors, (443445), 66666 states have internal predecessors, (443445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:40:43,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66667 states to 66667 states and 443445 transitions. [2022-01-18 04:40:43,911 INFO L78 Accepts]: Start accepts. Automaton has 66667 states and 443445 transitions. Word has length 36 [2022-01-18 04:40:43,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:40:43,911 INFO L470 AbstractCegarLoop]: Abstraction has 66667 states and 443445 transitions. [2022-01-18 04:40:43,911 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.285714285714286) internal successors, (60), 13 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:40:43,912 INFO L276 IsEmpty]: Start isEmpty. Operand 66667 states and 443445 transitions. [2022-01-18 04:40:44,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-01-18 04:40:44,151 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:40:44,151 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:40:44,167 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2022-01-18 04:40:44,351 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,SelfDestructingSolverStorable51 [2022-01-18 04:40:44,352 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-18 04:40:44,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:40:44,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1971285046, now seen corresponding path program 46 times [2022-01-18 04:40:44,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:40:44,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240839536] [2022-01-18 04:40:44,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:40:44,352 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:40:44,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:40:44,399 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-01-18 04:40:44,399 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:40:44,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240839536] [2022-01-18 04:40:44,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240839536] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:40:44,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [746291563] [2022-01-18 04:40:44,400 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 04:40:44,400 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:40:44,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:40:44,401 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) [2022-01-18 04:40:44,402 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2022-01-18 04:40:44,431 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 04:40:44,431 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:40:44,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 04:40:44,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:40:44,561 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-01-18 04:40:44,561 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:40:44,623 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-01-18 04:40:44,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [746291563] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:40:44,623 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:40:44,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 7] total 14 [2022-01-18 04:40:44,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262372830] [2022-01-18 04:40:44,623 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:40:44,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-18 04:40:44,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:40:44,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-18 04:40:44,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2022-01-18 04:40:44,624 INFO L87 Difference]: Start difference. First operand 66667 states and 443445 transitions. Second operand has 15 states, 15 states have (on average 4.0) internal successors, (60), 14 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:40:46,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:40:46,708 INFO L93 Difference]: Finished difference Result 119143 states and 777673 transitions. [2022-01-18 04:40:46,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-18 04:40:46,708 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.0) internal successors, (60), 14 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-01-18 04:40:46,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:40:47,910 INFO L225 Difference]: With dead ends: 119143 [2022-01-18 04:40:47,910 INFO L226 Difference]: Without dead ends: 100507 [2022-01-18 04:40:47,910 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 60 SyntacticMatches, 6 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=530, Unknown=0, NotChecked=0, Total=650 [2022-01-18 04:40:47,911 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 250 mSDsluCounter, 825 mSDsCounter, 0 mSdLazyCounter, 1018 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 1028 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1018 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 04:40:47,911 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [250 Valid, 425 Invalid, 1028 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1018 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 04:40:48,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100507 states. [2022-01-18 04:40:50,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100507 to 61591. [2022-01-18 04:40:50,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61591 states, 61590 states have (on average 6.625669751583049) internal successors, (408075), 61590 states have internal predecessors, (408075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:40:51,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61591 states to 61591 states and 408075 transitions. [2022-01-18 04:40:51,047 INFO L78 Accepts]: Start accepts. Automaton has 61591 states and 408075 transitions. Word has length 36 [2022-01-18 04:40:51,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:40:51,047 INFO L470 AbstractCegarLoop]: Abstraction has 61591 states and 408075 transitions. [2022-01-18 04:40:51,047 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.0) internal successors, (60), 14 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:40:51,047 INFO L276 IsEmpty]: Start isEmpty. Operand 61591 states and 408075 transitions. [2022-01-18 04:40:51,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-01-18 04:40:51,294 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:40:51,294 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:40:51,311 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2022-01-18 04:40:51,501 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,SelfDestructingSolverStorable52 [2022-01-18 04:40:51,502 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-18 04:40:51,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:40:51,502 INFO L85 PathProgramCache]: Analyzing trace with hash 2054935822, now seen corresponding path program 47 times [2022-01-18 04:40:51,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:40:51,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999026367] [2022-01-18 04:40:51,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:40:51,503 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:40:51,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:40:51,568 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-01-18 04:40:51,569 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:40:51,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999026367] [2022-01-18 04:40:51,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999026367] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:40:51,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1359405177] [2022-01-18 04:40:51,569 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 04:40:51,569 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:40:51,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:40:51,570 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) [2022-01-18 04:40:51,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2022-01-18 04:40:51,613 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-01-18 04:40:51,613 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:40:51,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 04:40:51,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:40:51,754 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-01-18 04:40:51,754 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:40:51,817 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-01-18 04:40:51,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1359405177] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:40:51,817 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:40:51,817 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 15 [2022-01-18 04:40:51,817 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354166270] [2022-01-18 04:40:51,818 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:40:51,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-18 04:40:51,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:40:51,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-18 04:40:51,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2022-01-18 04:40:51,818 INFO L87 Difference]: Start difference. First operand 61591 states and 408075 transitions. Second operand has 16 states, 16 states have (on average 3.75) internal successors, (60), 15 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:40:53,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:40:53,756 INFO L93 Difference]: Finished difference Result 90358 states and 592436 transitions. [2022-01-18 04:40:53,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-18 04:40:53,757 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.75) internal successors, (60), 15 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-01-18 04:40:53,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:40:54,327 INFO L225 Difference]: With dead ends: 90358 [2022-01-18 04:40:54,327 INFO L226 Difference]: Without dead ends: 88663 [2022-01-18 04:40:54,327 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 59 SyntacticMatches, 6 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=468, Unknown=0, NotChecked=0, Total=552 [2022-01-18 04:40:54,327 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 209 mSDsluCounter, 916 mSDsCounter, 0 mSdLazyCounter, 1112 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 1121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 04:40:54,328 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [209 Valid, 471 Invalid, 1121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1112 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 04:40:54,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88663 states. [2022-01-18 04:40:56,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88663 to 61591. [2022-01-18 04:40:56,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61591 states, 61590 states have (on average 6.625669751583049) internal successors, (408075), 61590 states have internal predecessors, (408075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:40:57,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61591 states to 61591 states and 408075 transitions. [2022-01-18 04:40:57,157 INFO L78 Accepts]: Start accepts. Automaton has 61591 states and 408075 transitions. Word has length 36 [2022-01-18 04:40:57,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:40:57,158 INFO L470 AbstractCegarLoop]: Abstraction has 61591 states and 408075 transitions. [2022-01-18 04:40:57,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.75) internal successors, (60), 15 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:40:57,158 INFO L276 IsEmpty]: Start isEmpty. Operand 61591 states and 408075 transitions. [2022-01-18 04:40:57,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-01-18 04:40:57,380 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:40:57,380 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:40:57,396 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2022-01-18 04:40:57,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:40:57,581 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-18 04:40:57,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:40:57,581 INFO L85 PathProgramCache]: Analyzing trace with hash 538181982, now seen corresponding path program 48 times [2022-01-18 04:40:57,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:40:57,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251135012] [2022-01-18 04:40:57,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:40:57,581 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:40:57,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:40:57,624 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-01-18 04:40:57,625 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:40:57,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251135012] [2022-01-18 04:40:57,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251135012] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:40:57,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1700201774] [2022-01-18 04:40:57,625 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 04:40:57,625 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:40:57,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:40:57,626 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) [2022-01-18 04:40:57,627 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2022-01-18 04:40:57,658 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 04:40:57,658 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:40:57,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 04:40:57,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:40:57,792 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-01-18 04:40:57,792 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:40:57,856 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-01-18 04:40:57,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1700201774] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:40:57,857 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:40:57,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 15 [2022-01-18 04:40:57,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428875829] [2022-01-18 04:40:57,857 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:40:57,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-18 04:40:57,857 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:40:57,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-18 04:40:57,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2022-01-18 04:40:57,858 INFO L87 Difference]: Start difference. First operand 61591 states and 408075 transitions. Second operand has 16 states, 16 states have (on average 3.9375) internal successors, (63), 15 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:40:59,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:40:59,761 INFO L93 Difference]: Finished difference Result 112379 states and 733060 transitions. [2022-01-18 04:40:59,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-18 04:40:59,761 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.9375) internal successors, (63), 15 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-01-18 04:40:59,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:41:00,928 INFO L225 Difference]: With dead ends: 112379 [2022-01-18 04:41:00,928 INFO L226 Difference]: Without dead ends: 101368 [2022-01-18 04:41:00,929 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 59 SyntacticMatches, 6 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=468, Unknown=0, NotChecked=0, Total=552 [2022-01-18 04:41:00,929 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 249 mSDsluCounter, 933 mSDsCounter, 0 mSdLazyCounter, 1096 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 476 SdHoareTripleChecker+Invalid, 1105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1096 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 04:41:00,929 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [249 Valid, 476 Invalid, 1105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1096 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 04:41:01,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101368 states. [2022-01-18 04:41:03,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101368 to 56512. [2022-01-18 04:41:03,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56512 states, 56511 states have (on average 6.595140769053812) internal successors, (372698), 56511 states have internal predecessors, (372698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:41:03,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56512 states to 56512 states and 372698 transitions. [2022-01-18 04:41:03,894 INFO L78 Accepts]: Start accepts. Automaton has 56512 states and 372698 transitions. Word has length 36 [2022-01-18 04:41:03,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:41:03,894 INFO L470 AbstractCegarLoop]: Abstraction has 56512 states and 372698 transitions. [2022-01-18 04:41:03,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.9375) internal successors, (63), 15 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:41:03,894 INFO L276 IsEmpty]: Start isEmpty. Operand 56512 states and 372698 transitions. [2022-01-18 04:41:04,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-01-18 04:41:04,110 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:41:04,110 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:41:04,126 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2022-01-18 04:41:04,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2022-01-18 04:41:04,323 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-18 04:41:04,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:41:04,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1081312328, now seen corresponding path program 49 times [2022-01-18 04:41:04,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:41:04,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590743848] [2022-01-18 04:41:04,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:41:04,324 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:41:04,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:41:04,363 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-01-18 04:41:04,363 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:41:04,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590743848] [2022-01-18 04:41:04,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590743848] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:41:04,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484979261] [2022-01-18 04:41:04,363 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 04:41:04,363 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:41:04,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:41:04,364 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) [2022-01-18 04:41:04,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2022-01-18 04:41:04,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:41:04,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 04:41:04,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:41:04,515 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-01-18 04:41:04,515 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:41:04,573 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-01-18 04:41:04,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1484979261] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:41:04,574 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:41:04,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 7] total 13 [2022-01-18 04:41:04,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644962787] [2022-01-18 04:41:04,575 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:41:04,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-18 04:41:04,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:41:04,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-18 04:41:04,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-01-18 04:41:04,575 INFO L87 Difference]: Start difference. First operand 56512 states and 372698 transitions. Second operand has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 13 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:41:06,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:41:06,203 INFO L93 Difference]: Finished difference Result 77671 states and 509515 transitions. [2022-01-18 04:41:06,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-18 04:41:06,204 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 13 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-01-18 04:41:06,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:41:06,676 INFO L225 Difference]: With dead ends: 77671 [2022-01-18 04:41:06,676 INFO L226 Difference]: Without dead ends: 75977 [2022-01-18 04:41:06,676 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 60 SyntacticMatches, 7 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2022-01-18 04:41:06,677 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 152 mSDsluCounter, 757 mSDsCounter, 0 mSdLazyCounter, 909 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 915 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 909 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 04:41:06,677 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [152 Valid, 365 Invalid, 915 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 909 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 04:41:06,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75977 states. [2022-01-18 04:41:08,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75977 to 56512. [2022-01-18 04:41:08,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56512 states, 56511 states have (on average 6.595140769053812) internal successors, (372698), 56511 states have internal predecessors, (372698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:41:09,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56512 states to 56512 states and 372698 transitions. [2022-01-18 04:41:09,310 INFO L78 Accepts]: Start accepts. Automaton has 56512 states and 372698 transitions. Word has length 36 [2022-01-18 04:41:09,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:41:09,310 INFO L470 AbstractCegarLoop]: Abstraction has 56512 states and 372698 transitions. [2022-01-18 04:41:09,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 13 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:41:09,310 INFO L276 IsEmpty]: Start isEmpty. Operand 56512 states and 372698 transitions. [2022-01-18 04:41:09,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-01-18 04:41:09,529 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:41:09,529 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:41:09,545 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0 [2022-01-18 04:41:09,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2022-01-18 04:41:09,730 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-18 04:41:09,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:41:09,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1625307066, now seen corresponding path program 50 times [2022-01-18 04:41:09,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:41:09,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622825213] [2022-01-18 04:41:09,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:41:09,731 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:41:09,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:41:09,770 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-01-18 04:41:09,770 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:41:09,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622825213] [2022-01-18 04:41:09,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622825213] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:41:09,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1126243518] [2022-01-18 04:41:09,770 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 04:41:09,770 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:41:09,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:41:09,771 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) [2022-01-18 04:41:09,773 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2022-01-18 04:41:09,802 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 04:41:09,802 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:41:09,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 04:41:09,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:41:09,907 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-01-18 04:41:09,907 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:41:09,968 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-01-18 04:41:09,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1126243518] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:41:09,968 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:41:09,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 6] total 11 [2022-01-18 04:41:09,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116936659] [2022-01-18 04:41:09,968 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:41:09,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-18 04:41:09,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:41:09,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-18 04:41:09,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-01-18 04:41:09,969 INFO L87 Difference]: Start difference. First operand 56512 states and 372698 transitions. Second operand has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 11 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:41:11,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:41:11,637 INFO L93 Difference]: Finished difference Result 83612 states and 539385 transitions. [2022-01-18 04:41:11,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-18 04:41:11,638 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 11 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have 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 [2022-01-18 04:41:11,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:41:12,121 INFO L225 Difference]: With dead ends: 83612 [2022-01-18 04:41:12,122 INFO L226 Difference]: Without dead ends: 75985 [2022-01-18 04:41:12,122 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 60 SyntacticMatches, 9 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2022-01-18 04:41:12,123 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 219 mSDsluCounter, 811 mSDsCounter, 0 mSdLazyCounter, 910 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 910 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 04:41:12,123 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [219 Valid, 423 Invalid, 918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 910 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 04:41:12,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75985 states. [2022-01-18 04:41:13,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75985 to 56512. [2022-01-18 04:41:13,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56512 states, 56511 states have (on average 6.5801702323441456) internal successors, (371852), 56511 states have internal predecessors, (371852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:41:14,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56512 states to 56512 states and 371852 transitions. [2022-01-18 04:41:14,733 INFO L78 Accepts]: Start accepts. Automaton has 56512 states and 371852 transitions. Word has length 36 [2022-01-18 04:41:14,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:41:14,733 INFO L470 AbstractCegarLoop]: Abstraction has 56512 states and 371852 transitions. [2022-01-18 04:41:14,733 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 11 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:41:14,733 INFO L276 IsEmpty]: Start isEmpty. Operand 56512 states and 371852 transitions. [2022-01-18 04:41:15,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-01-18 04:41:15,082 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:41:15,082 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:41:15,097 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2022-01-18 04:41:15,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:41:15,282 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-18 04:41:15,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:41:15,283 INFO L85 PathProgramCache]: Analyzing trace with hash 944655902, now seen corresponding path program 51 times [2022-01-18 04:41:15,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:41:15,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374064992] [2022-01-18 04:41:15,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:41:15,283 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:41:15,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:41:15,326 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-01-18 04:41:15,327 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:41:15,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374064992] [2022-01-18 04:41:15,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374064992] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:41:15,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1115506418] [2022-01-18 04:41:15,327 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 04:41:15,327 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:41:15,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:41:15,328 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) [2022-01-18 04:41:15,329 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2022-01-18 04:41:15,356 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 04:41:15,356 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:41:15,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 04:41:15,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:41:15,430 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-01-18 04:41:15,430 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:41:15,475 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-01-18 04:41:15,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1115506418] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:41:15,475 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:41:15,475 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 3] total 10 [2022-01-18 04:41:15,475 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687734990] [2022-01-18 04:41:15,475 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:41:15,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 04:41:15,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:41:15,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 04:41:15,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-01-18 04:41:15,476 INFO L87 Difference]: Start difference. First operand 56512 states and 371852 transitions. Second operand has 11 states, 11 states have (on average 6.0) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:41:17,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:41:17,753 INFO L93 Difference]: Finished difference Result 133141 states and 842938 transitions. [2022-01-18 04:41:17,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-18 04:41:17,753 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.0) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-01-18 04:41:17,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:41:18,572 INFO L225 Difference]: With dead ends: 133141 [2022-01-18 04:41:18,572 INFO L226 Difference]: Without dead ends: 119114 [2022-01-18 04:41:18,572 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 69 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=112, Invalid=700, Unknown=0, NotChecked=0, Total=812 [2022-01-18 04:41:18,573 INFO L933 BasicCegarLoop]: 89 mSDtfsCounter, 252 mSDsluCounter, 1362 mSDsCounter, 0 mSdLazyCounter, 1478 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 713 SdHoareTripleChecker+Invalid, 1501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 04:41:18,573 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [252 Valid, 713 Invalid, 1501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1478 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 04:41:18,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119114 states. [2022-01-18 04:41:21,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119114 to 75311. [2022-01-18 04:41:21,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75311 states, 75310 states have (on average 6.663085911565529) internal successors, (501797), 75310 states have internal predecessors, (501797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:41:22,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75311 states to 75311 states and 501797 transitions. [2022-01-18 04:41:22,578 INFO L78 Accepts]: Start accepts. Automaton has 75311 states and 501797 transitions. Word has length 36 [2022-01-18 04:41:22,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:41:22,579 INFO L470 AbstractCegarLoop]: Abstraction has 75311 states and 501797 transitions. [2022-01-18 04:41:22,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.0) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:41:22,579 INFO L276 IsEmpty]: Start isEmpty. Operand 75311 states and 501797 transitions. [2022-01-18 04:41:22,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-01-18 04:41:22,855 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:41:22,855 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:41:22,871 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2022-01-18 04:41:23,056 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:41:23,056 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-18 04:41:23,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:41:23,057 INFO L85 PathProgramCache]: Analyzing trace with hash -2142412865, now seen corresponding path program 52 times [2022-01-18 04:41:23,057 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:41:23,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444220933] [2022-01-18 04:41:23,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:41:23,057 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:41:23,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:41:23,090 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-01-18 04:41:23,090 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:41:23,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444220933] [2022-01-18 04:41:23,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444220933] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:41:23,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [210925170] [2022-01-18 04:41:23,090 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 04:41:23,090 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:41:23,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:41:23,091 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) [2022-01-18 04:41:23,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2022-01-18 04:41:23,120 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 04:41:23,120 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:41:23,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 04:41:23,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:41:23,226 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-01-18 04:41:23,226 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:41:23,290 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-01-18 04:41:23,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [210925170] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:41:23,290 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:41:23,290 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 7] total 12 [2022-01-18 04:41:23,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976881936] [2022-01-18 04:41:23,291 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:41:23,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-18 04:41:23,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:41:23,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-18 04:41:23,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-01-18 04:41:23,291 INFO L87 Difference]: Start difference. First operand 75311 states and 501797 transitions. Second operand has 13 states, 13 states have (on average 4.6923076923076925) internal successors, (61), 12 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:41:26,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:41:26,214 INFO L93 Difference]: Finished difference Result 163605 states and 1075759 transitions. [2022-01-18 04:41:26,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-18 04:41:26,214 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.6923076923076925) internal successors, (61), 12 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2022-01-18 04:41:26,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:41:27,144 INFO L225 Difference]: With dead ends: 163605 [2022-01-18 04:41:27,144 INFO L226 Difference]: Without dead ends: 129189 [2022-01-18 04:41:27,145 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 61 SyntacticMatches, 9 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=529, Unknown=0, NotChecked=0, Total=650 [2022-01-18 04:41:27,145 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 429 mSDsluCounter, 713 mSDsCounter, 0 mSdLazyCounter, 854 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 429 SdHoareTripleChecker+Valid, 399 SdHoareTripleChecker+Invalid, 884 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 854 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 04:41:27,145 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [429 Valid, 399 Invalid, 884 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 854 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 04:41:27,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129189 states. [2022-01-18 04:41:30,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129189 to 74165. [2022-01-18 04:41:30,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74165 states, 74164 states have (on average 6.694851949733024) internal successors, (496517), 74164 states have internal predecessors, (496517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:41:30,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74165 states to 74165 states and 496517 transitions. [2022-01-18 04:41:30,725 INFO L78 Accepts]: Start accepts. Automaton has 74165 states and 496517 transitions. Word has length 37 [2022-01-18 04:41:30,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:41:30,725 INFO L470 AbstractCegarLoop]: Abstraction has 74165 states and 496517 transitions. [2022-01-18 04:41:30,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.6923076923076925) internal successors, (61), 12 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:41:30,725 INFO L276 IsEmpty]: Start isEmpty. Operand 74165 states and 496517 transitions. [2022-01-18 04:41:31,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-01-18 04:41:31,591 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:41:31,591 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:41:31,606 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Ended with exit code 0 [2022-01-18 04:41:31,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58,57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:41:31,791 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-18 04:41:31,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:41:31,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1883617541, now seen corresponding path program 53 times [2022-01-18 04:41:31,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:41:31,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366129450] [2022-01-18 04:41:31,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:41:31,792 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:41:31,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:41:31,832 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-01-18 04:41:31,833 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:41:31,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366129450] [2022-01-18 04:41:31,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366129450] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:41:31,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [613786615] [2022-01-18 04:41:31,833 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 04:41:31,833 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:41:31,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:41:31,834 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) [2022-01-18 04:41:31,835 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2022-01-18 04:41:31,865 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-01-18 04:41:31,865 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:41:31,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 04:41:31,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:41:31,988 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-01-18 04:41:31,989 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:41:32,058 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-01-18 04:41:32,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [613786615] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:41:32,059 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:41:32,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 13 [2022-01-18 04:41:32,059 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235648924] [2022-01-18 04:41:32,059 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:41:32,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-18 04:41:32,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:41:32,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-18 04:41:32,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-01-18 04:41:32,060 INFO L87 Difference]: Start difference. First operand 74165 states and 496517 transitions. Second operand has 14 states, 14 states have (on average 4.357142857142857) internal successors, (61), 13 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:41:34,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:41:34,890 INFO L93 Difference]: Finished difference Result 149831 states and 983713 transitions. [2022-01-18 04:41:34,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-01-18 04:41:34,890 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.357142857142857) internal successors, (61), 13 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2022-01-18 04:41:34,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:41:36,357 INFO L225 Difference]: With dead ends: 149831 [2022-01-18 04:41:36,357 INFO L226 Difference]: Without dead ends: 110837 [2022-01-18 04:41:36,358 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 60 SyntacticMatches, 9 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=224, Invalid=898, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 04:41:36,361 INFO L933 BasicCegarLoop]: 69 mSDtfsCounter, 327 mSDsluCounter, 1012 mSDsCounter, 0 mSdLazyCounter, 1228 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 564 SdHoareTripleChecker+Invalid, 1246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 04:41:36,361 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [327 Valid, 564 Invalid, 1246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1228 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 04:41:36,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110837 states. [2022-01-18 04:41:38,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110837 to 61559. [2022-01-18 04:41:38,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61559 states, 61558 states have (on average 6.582458819324865) internal successors, (405203), 61558 states have internal predecessors, (405203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:41:39,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61559 states to 61559 states and 405203 transitions. [2022-01-18 04:41:39,521 INFO L78 Accepts]: Start accepts. Automaton has 61559 states and 405203 transitions. Word has length 37 [2022-01-18 04:41:39,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:41:39,521 INFO L470 AbstractCegarLoop]: Abstraction has 61559 states and 405203 transitions. [2022-01-18 04:41:39,521 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.357142857142857) internal successors, (61), 13 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:41:39,521 INFO L276 IsEmpty]: Start isEmpty. Operand 61559 states and 405203 transitions. [2022-01-18 04:41:39,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-01-18 04:41:39,802 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:41:39,803 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:41:39,818 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2022-01-18 04:41:40,003 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,SelfDestructingSolverStorable59 [2022-01-18 04:41:40,003 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-18 04:41:40,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:41:40,005 INFO L85 PathProgramCache]: Analyzing trace with hash 1844070207, now seen corresponding path program 54 times [2022-01-18 04:41:40,005 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:41:40,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128608745] [2022-01-18 04:41:40,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:41:40,005 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:41:40,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:41:40,054 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-01-18 04:41:40,055 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:41:40,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128608745] [2022-01-18 04:41:40,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128608745] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:41:40,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [823214078] [2022-01-18 04:41:40,055 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 04:41:40,055 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:41:40,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:41:40,057 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) [2022-01-18 04:41:40,057 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2022-01-18 04:41:40,084 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 04:41:40,084 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:41:40,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-18 04:41:40,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:41:40,166 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-01-18 04:41:40,167 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:41:40,236 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-01-18 04:41:40,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [823214078] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:41:40,236 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:41:40,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 4] total 14 [2022-01-18 04:41:40,236 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512169667] [2022-01-18 04:41:40,236 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:41:40,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-18 04:41:40,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:41:40,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-18 04:41:40,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2022-01-18 04:41:40,237 INFO L87 Difference]: Start difference. First operand 61559 states and 405203 transitions. Second operand has 15 states, 15 states have (on average 4.4) internal successors, (66), 14 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:41:43,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:41:43,118 INFO L93 Difference]: Finished difference Result 117825 states and 739142 transitions. [2022-01-18 04:41:43,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-01-18 04:41:43,118 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.4) internal successors, (66), 14 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2022-01-18 04:41:43,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:41:43,716 INFO L225 Difference]: With dead ends: 117825 [2022-01-18 04:41:43,716 INFO L226 Difference]: Without dead ends: 97872 [2022-01-18 04:41:43,716 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 67 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1074 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=461, Invalid=3199, Unknown=0, NotChecked=0, Total=3660 [2022-01-18 04:41:43,717 INFO L933 BasicCegarLoop]: 104 mSDtfsCounter, 797 mSDsluCounter, 1798 mSDsCounter, 0 mSdLazyCounter, 2442 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 797 SdHoareTripleChecker+Valid, 1016 SdHoareTripleChecker+Invalid, 2559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 2442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 04:41:43,717 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [797 Valid, 1016 Invalid, 2559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 2442 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 04:41:43,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97872 states. [2022-01-18 04:41:46,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97872 to 66935. [2022-01-18 04:41:46,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66935 states, 66934 states have (on average 6.500343622075477) internal successors, (435094), 66934 states have internal predecessors, (435094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:41:46,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66935 states to 66935 states and 435094 transitions. [2022-01-18 04:41:46,665 INFO L78 Accepts]: Start accepts. Automaton has 66935 states and 435094 transitions. Word has length 37 [2022-01-18 04:41:46,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:41:46,665 INFO L470 AbstractCegarLoop]: Abstraction has 66935 states and 435094 transitions. [2022-01-18 04:41:46,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.4) internal successors, (66), 14 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:41:46,665 INFO L276 IsEmpty]: Start isEmpty. Operand 66935 states and 435094 transitions. [2022-01-18 04:41:47,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-01-18 04:41:47,399 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:41:47,399 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:41:47,427 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2022-01-18 04:41:47,614 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,SelfDestructingSolverStorable60 [2022-01-18 04:41:47,614 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-18 04:41:47,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:41:47,615 INFO L85 PathProgramCache]: Analyzing trace with hash 2083853536, now seen corresponding path program 55 times [2022-01-18 04:41:47,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:41:47,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454797648] [2022-01-18 04:41:47,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:41:47,615 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:41:47,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:41:47,636 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-01-18 04:41:47,637 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:41:47,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454797648] [2022-01-18 04:41:47,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454797648] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:41:47,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1885584793] [2022-01-18 04:41:47,637 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 04:41:47,637 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:41:47,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:41:47,638 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) [2022-01-18 04:41:47,639 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2022-01-18 04:41:47,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:41:47,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-18 04:41:47,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:41:47,740 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-01-18 04:41:47,740 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:41:47,795 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-01-18 04:41:47,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1885584793] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:41:47,795 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:41:47,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2022-01-18 04:41:47,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542095861] [2022-01-18 04:41:47,796 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:41:47,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 04:41:47,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:41:47,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 04:41:47,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-18 04:41:47,796 INFO L87 Difference]: Start difference. First operand 66935 states and 435094 transitions. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 7 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) [2022-01-18 04:41:49,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:41:49,506 INFO L93 Difference]: Finished difference Result 111728 states and 696117 transitions. [2022-01-18 04:41:49,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 04:41:49,506 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 7 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 38 [2022-01-18 04:41:49,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:41:50,046 INFO L225 Difference]: With dead ends: 111728 [2022-01-18 04:41:50,046 INFO L226 Difference]: Without dead ends: 81803 [2022-01-18 04:41:50,047 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 69 SyntacticMatches, 4 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-01-18 04:41:50,047 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 99 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 04:41:50,047 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 131 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 04:41:50,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81803 states. [2022-01-18 04:41:51,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81803 to 66935. [2022-01-18 04:41:52,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66935 states, 66934 states have (on average 6.390115636298443) internal successors, (427716), 66934 states have internal predecessors, (427716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:41:52,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66935 states to 66935 states and 427716 transitions. [2022-01-18 04:41:52,904 INFO L78 Accepts]: Start accepts. Automaton has 66935 states and 427716 transitions. Word has length 38 [2022-01-18 04:41:52,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:41:52,905 INFO L470 AbstractCegarLoop]: Abstraction has 66935 states and 427716 transitions. [2022-01-18 04:41:52,905 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 7 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) [2022-01-18 04:41:52,905 INFO L276 IsEmpty]: Start isEmpty. Operand 66935 states and 427716 transitions. [2022-01-18 04:41:53,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-01-18 04:41:53,133 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:41:53,133 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:41:53,149 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2022-01-18 04:41:53,334 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,SelfDestructingSolverStorable61 [2022-01-18 04:41:53,334 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-18 04:41:53,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:41:53,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1510049182, now seen corresponding path program 56 times [2022-01-18 04:41:53,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:41:53,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807067930] [2022-01-18 04:41:53,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:41:53,335 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:41:53,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:41:53,359 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-01-18 04:41:53,359 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:41:53,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807067930] [2022-01-18 04:41:53,359 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807067930] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:41:53,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2032841705] [2022-01-18 04:41:53,359 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 04:41:53,359 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:41:53,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:41:53,360 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) [2022-01-18 04:41:53,361 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2022-01-18 04:41:53,390 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 04:41:53,391 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:41:53,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-18 04:41:53,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:41:53,453 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-01-18 04:41:53,454 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:41:53,504 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-01-18 04:41:53,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2032841705] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:41:53,504 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:41:53,504 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 7 [2022-01-18 04:41:53,504 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974356886] [2022-01-18 04:41:53,504 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:41:53,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 04:41:53,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:41:53,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 04:41:53,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-18 04:41:53,505 INFO L87 Difference]: Start difference. First operand 66935 states and 427716 transitions. Second operand has 8 states, 8 states have (on average 6.875) internal successors, (55), 7 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) [2022-01-18 04:41:55,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:41:55,040 INFO L93 Difference]: Finished difference Result 104231 states and 642732 transitions. [2022-01-18 04:41:55,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 04:41:55,040 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 7 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 38 [2022-01-18 04:41:55,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:41:55,608 INFO L225 Difference]: With dead ends: 104231 [2022-01-18 04:41:55,608 INFO L226 Difference]: Without dead ends: 85380 [2022-01-18 04:41:55,608 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 70 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-01-18 04:41:55,609 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 89 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 04:41:55,609 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 122 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 04:41:55,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85380 states. [2022-01-18 04:41:57,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85380 to 59557. [2022-01-18 04:41:57,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59557 states, 59556 states have (on average 6.229280005373094) internal successors, (370991), 59556 states have internal predecessors, (370991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:41:58,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59557 states to 59557 states and 370991 transitions. [2022-01-18 04:41:58,297 INFO L78 Accepts]: Start accepts. Automaton has 59557 states and 370991 transitions. Word has length 38 [2022-01-18 04:41:58,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:41:58,298 INFO L470 AbstractCegarLoop]: Abstraction has 59557 states and 370991 transitions. [2022-01-18 04:41:58,298 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 7 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) [2022-01-18 04:41:58,298 INFO L276 IsEmpty]: Start isEmpty. Operand 59557 states and 370991 transitions. [2022-01-18 04:41:58,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-01-18 04:41:58,492 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:41:58,492 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:41:58,509 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2022-01-18 04:41:58,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:41:58,694 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-18 04:41:58,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:41:58,694 INFO L85 PathProgramCache]: Analyzing trace with hash 973042700, now seen corresponding path program 57 times [2022-01-18 04:41:58,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:41:58,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329873750] [2022-01-18 04:41:58,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:41:58,694 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:41:58,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:41:58,716 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-01-18 04:41:58,716 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:41:58,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329873750] [2022-01-18 04:41:58,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329873750] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:41:58,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [903002924] [2022-01-18 04:41:58,716 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 04:41:58,716 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:41:58,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:41:58,717 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) [2022-01-18 04:41:58,718 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2022-01-18 04:41:58,747 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 04:41:58,748 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:41:58,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-18 04:41:58,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:41:58,811 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-01-18 04:41:58,812 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:41:58,862 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-01-18 04:41:58,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [903002924] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:41:58,862 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:41:58,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 7 [2022-01-18 04:41:58,862 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813055327] [2022-01-18 04:41:58,862 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:41:58,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 04:41:58,862 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:41:58,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 04:41:58,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-18 04:41:58,863 INFO L87 Difference]: Start difference. First operand 59557 states and 370991 transitions. Second operand has 8 states, 8 states have (on average 6.875) internal successors, (55), 7 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) [2022-01-18 04:42:00,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:42:00,129 INFO L93 Difference]: Finished difference Result 89300 states and 550787 transitions. [2022-01-18 04:42:00,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 04:42:00,129 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 7 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 38 [2022-01-18 04:42:00,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:42:00,599 INFO L225 Difference]: With dead ends: 89300 [2022-01-18 04:42:00,599 INFO L226 Difference]: Without dead ends: 74425 [2022-01-18 04:42:00,599 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 70 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-18 04:42:00,599 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 53 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 04:42:00,599 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 130 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 04:42:00,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74425 states. [2022-01-18 04:42:02,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74425 to 55868. [2022-01-18 04:42:02,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55868 states, 55867 states have (on average 6.165947697209444) internal successors, (344473), 55867 states have internal predecessors, (344473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:42:03,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55868 states to 55868 states and 344473 transitions. [2022-01-18 04:42:03,062 INFO L78 Accepts]: Start accepts. Automaton has 55868 states and 344473 transitions. Word has length 38 [2022-01-18 04:42:03,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:42:03,062 INFO L470 AbstractCegarLoop]: Abstraction has 55868 states and 344473 transitions. [2022-01-18 04:42:03,062 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 7 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) [2022-01-18 04:42:03,062 INFO L276 IsEmpty]: Start isEmpty. Operand 55868 states and 344473 transitions. [2022-01-18 04:42:03,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-01-18 04:42:03,258 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:42:03,258 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:42:03,273 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Ended with exit code 0 [2022-01-18 04:42:03,458 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:42:03,459 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-18 04:42:03,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:42:03,459 INFO L85 PathProgramCache]: Analyzing trace with hash 580015690, now seen corresponding path program 58 times [2022-01-18 04:42:03,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:42:03,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909163586] [2022-01-18 04:42:03,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:42:03,459 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:42:03,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:42:03,483 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-01-18 04:42:03,483 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:42:03,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909163586] [2022-01-18 04:42:03,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909163586] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:42:03,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1572462697] [2022-01-18 04:42:03,483 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 04:42:03,484 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:42:03,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:42:03,485 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) [2022-01-18 04:42:03,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2022-01-18 04:42:03,530 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 04:42:03,530 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:42:03,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-18 04:42:03,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:42:03,594 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-01-18 04:42:03,595 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:42:03,648 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-01-18 04:42:03,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1572462697] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:42:03,648 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:42:03,648 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2022-01-18 04:42:03,648 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710005009] [2022-01-18 04:42:03,648 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:42:03,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 04:42:03,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:42:03,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 04:42:03,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-18 04:42:03,649 INFO L87 Difference]: Start difference. First operand 55868 states and 344473 transitions. Second operand has 8 states, 8 states have (on average 6.75) internal successors, (54), 7 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) [2022-01-18 04:42:04,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:42:04,882 INFO L93 Difference]: Finished difference Result 78177 states and 482076 transitions. [2022-01-18 04:42:04,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 04:42:04,882 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 7 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 38 [2022-01-18 04:42:04,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:42:05,320 INFO L225 Difference]: With dead ends: 78177 [2022-01-18 04:42:05,321 INFO L226 Difference]: Without dead ends: 70624 [2022-01-18 04:42:05,321 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 69 SyntacticMatches, 4 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-01-18 04:42:05,321 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 64 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 04:42:05,321 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 104 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 04:42:05,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70624 states. [2022-01-18 04:42:06,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70624 to 63246. [2022-01-18 04:42:07,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63246 states, 63245 states have (on average 6.168566685113448) internal successors, (390131), 63245 states have internal predecessors, (390131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:42:07,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63246 states to 63246 states and 390131 transitions. [2022-01-18 04:42:07,863 INFO L78 Accepts]: Start accepts. Automaton has 63246 states and 390131 transitions. Word has length 38 [2022-01-18 04:42:07,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:42:07,864 INFO L470 AbstractCegarLoop]: Abstraction has 63246 states and 390131 transitions. [2022-01-18 04:42:07,864 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 7 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) [2022-01-18 04:42:07,864 INFO L276 IsEmpty]: Start isEmpty. Operand 63246 states and 390131 transitions. [2022-01-18 04:42:08,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-01-18 04:42:08,086 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:42:08,086 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:42:08,101 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Ended with exit code 0 [2022-01-18 04:42:08,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2022-01-18 04:42:08,287 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-18 04:42:08,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:42:08,287 INFO L85 PathProgramCache]: Analyzing trace with hash 460340691, now seen corresponding path program 59 times [2022-01-18 04:42:08,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:42:08,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450856294] [2022-01-18 04:42:08,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:42:08,287 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:42:08,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:42:08,338 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-01-18 04:42:08,338 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:42:08,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450856294] [2022-01-18 04:42:08,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450856294] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:42:08,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [775742427] [2022-01-18 04:42:08,338 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 04:42:08,338 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:42:08,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:42:08,339 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) [2022-01-18 04:42:08,340 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2022-01-18 04:42:08,369 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-01-18 04:42:08,369 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:42:08,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 04:42:08,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:42:08,704 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-01-18 04:42:08,704 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:42:08,782 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-01-18 04:42:08,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [775742427] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:42:08,783 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:42:08,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10, 6] total 10 [2022-01-18 04:42:08,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277795866] [2022-01-18 04:42:08,783 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:42:08,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 04:42:08,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:42:08,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 04:42:08,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-01-18 04:42:08,783 INFO L87 Difference]: Start difference. First operand 63246 states and 390131 transitions. Second operand has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 10 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) [2022-01-18 04:42:10,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:42:10,467 INFO L93 Difference]: Finished difference Result 105877 states and 653832 transitions. [2022-01-18 04:42:10,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 04:42:10,468 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 10 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 39 [2022-01-18 04:42:10,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:42:11,100 INFO L225 Difference]: With dead ends: 105877 [2022-01-18 04:42:11,100 INFO L226 Difference]: Without dead ends: 104850 [2022-01-18 04:42:11,100 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 65 SyntacticMatches, 12 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-01-18 04:42:11,100 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 131 mSDsluCounter, 751 mSDsCounter, 0 mSdLazyCounter, 723 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 04:42:11,101 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [131 Valid, 322 Invalid, 726 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 723 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 04:42:11,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104850 states. [2022-01-18 04:42:13,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104850 to 91505. [2022-01-18 04:42:13,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91505 states, 91504 states have (on average 6.320248295156496) internal successors, (578328), 91504 states have internal predecessors, (578328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:42:14,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91505 states to 91505 states and 578328 transitions. [2022-01-18 04:42:14,981 INFO L78 Accepts]: Start accepts. Automaton has 91505 states and 578328 transitions. Word has length 39 [2022-01-18 04:42:14,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:42:14,981 INFO L470 AbstractCegarLoop]: Abstraction has 91505 states and 578328 transitions. [2022-01-18 04:42:14,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 10 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) [2022-01-18 04:42:14,981 INFO L276 IsEmpty]: Start isEmpty. Operand 91505 states and 578328 transitions. [2022-01-18 04:42:15,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-01-18 04:42:15,322 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:42:15,322 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:42:15,338 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Ended with exit code 0 [2022-01-18 04:42:15,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2022-01-18 04:42:15,522 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-18 04:42:15,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:42:15,523 INFO L85 PathProgramCache]: Analyzing trace with hash -884303883, now seen corresponding path program 60 times [2022-01-18 04:42:15,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:42:15,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542115519] [2022-01-18 04:42:15,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:42:15,523 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:42:15,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:42:15,576 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-01-18 04:42:15,576 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:42:15,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542115519] [2022-01-18 04:42:15,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542115519] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:42:15,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1967066937] [2022-01-18 04:42:15,576 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 04:42:15,576 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:42:15,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:42:15,577 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) [2022-01-18 04:42:15,577 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2022-01-18 04:42:15,604 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 04:42:15,604 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:42:15,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-18 04:42:15,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:42:15,713 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-01-18 04:42:15,713 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:42:15,767 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-01-18 04:42:15,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1967066937] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:42:15,768 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:42:15,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 4] total 11 [2022-01-18 04:42:15,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298918144] [2022-01-18 04:42:15,768 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:42:15,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-18 04:42:15,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:42:15,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-18 04:42:15,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-01-18 04:42:15,769 INFO L87 Difference]: Start difference. First operand 91505 states and 578328 transitions. Second operand has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 11 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:42:21,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:42:21,031 INFO L93 Difference]: Finished difference Result 260901 states and 1637289 transitions. [2022-01-18 04:42:21,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-18 04:42:21,031 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 11 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have 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 [2022-01-18 04:42:21,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:42:23,066 INFO L225 Difference]: With dead ends: 260901 [2022-01-18 04:42:23,067 INFO L226 Difference]: Without dead ends: 251186 [2022-01-18 04:42:23,067 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 72 SyntacticMatches, 4 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=143, Invalid=1189, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 04:42:23,067 INFO L933 BasicCegarLoop]: 162 mSDtfsCounter, 412 mSDsluCounter, 2496 mSDsCounter, 0 mSdLazyCounter, 2507 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 412 SdHoareTripleChecker+Valid, 1295 SdHoareTripleChecker+Invalid, 2565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 2507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 04:42:23,067 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [412 Valid, 1295 Invalid, 2565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 2507 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-18 04:42:23,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251186 states. [2022-01-18 04:42:31,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251186 to 166534. [2022-01-18 04:42:31,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166534 states, 166533 states have (on average 6.728450217074093) internal successors, (1120509), 166533 states have internal predecessors, (1120509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:42:33,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166534 states to 166534 states and 1120509 transitions. [2022-01-18 04:42:33,980 INFO L78 Accepts]: Start accepts. Automaton has 166534 states and 1120509 transitions. Word has length 39 [2022-01-18 04:42:33,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:42:33,980 INFO L470 AbstractCegarLoop]: Abstraction has 166534 states and 1120509 transitions. [2022-01-18 04:42:33,980 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 11 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:42:33,980 INFO L276 IsEmpty]: Start isEmpty. Operand 166534 states and 1120509 transitions. [2022-01-18 04:42:35,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-01-18 04:42:35,026 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:42:35,026 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:42:35,043 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Forceful destruction successful, exit code 0 [2022-01-18 04:42:35,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,65 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:42:35,239 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-18 04:42:35,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:42:35,240 INFO L85 PathProgramCache]: Analyzing trace with hash -74024473, now seen corresponding path program 61 times [2022-01-18 04:42:35,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:42:35,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61569330] [2022-01-18 04:42:35,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:42:35,240 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:42:35,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:42:35,310 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-01-18 04:42:35,310 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:42:35,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61569330] [2022-01-18 04:42:35,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61569330] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:42:35,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [315574109] [2022-01-18 04:42:35,310 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 04:42:35,310 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:42:35,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:42:35,335 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) [2022-01-18 04:42:35,383 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2022-01-18 04:42:35,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:42:35,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-18 04:42:35,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:42:36,464 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-01-18 04:42:36,464 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:42:36,532 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-01-18 04:42:36,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [315574109] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:42:36,533 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:42:36,533 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 5] total 14 [2022-01-18 04:42:36,533 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113281803] [2022-01-18 04:42:36,533 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:42:36,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-18 04:42:36,533 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:42:36,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-18 04:42:36,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2022-01-18 04:42:36,533 INFO L87 Difference]: Start difference. First operand 166534 states and 1120509 transitions. Second operand has 15 states, 15 states have (on average 5.866666666666666) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:42:43,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:42:43,798 INFO L93 Difference]: Finished difference Result 389347 states and 2531806 transitions. [2022-01-18 04:42:43,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-01-18 04:42:43,798 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.866666666666666) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have 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 [2022-01-18 04:42:43,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:42:47,398 INFO L225 Difference]: With dead ends: 389347 [2022-01-18 04:42:47,398 INFO L226 Difference]: Without dead ends: 363171 [2022-01-18 04:42:47,398 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 68 SyntacticMatches, 5 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 854 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=242, Invalid=2728, Unknown=0, NotChecked=0, Total=2970 [2022-01-18 04:42:47,398 INFO L933 BasicCegarLoop]: 248 mSDtfsCounter, 655 mSDsluCounter, 4195 mSDsCounter, 0 mSdLazyCounter, 4113 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 655 SdHoareTripleChecker+Valid, 2273 SdHoareTripleChecker+Invalid, 4209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 4113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-18 04:42:47,398 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [655 Valid, 2273 Invalid, 4209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 4113 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-18 04:42:48,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363171 states. [2022-01-18 04:42:58,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363171 to 216205. [2022-01-18 04:42:58,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216205 states, 216204 states have (on average 6.976471295628203) internal successors, (1508341), 216204 states have internal predecessors, (1508341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:43:01,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216205 states to 216205 states and 1508341 transitions. [2022-01-18 04:43:01,077 INFO L78 Accepts]: Start accepts. Automaton has 216205 states and 1508341 transitions. Word has length 39 [2022-01-18 04:43:01,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:43:01,077 INFO L470 AbstractCegarLoop]: Abstraction has 216205 states and 1508341 transitions. [2022-01-18 04:43:01,077 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.866666666666666) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:43:01,077 INFO L276 IsEmpty]: Start isEmpty. Operand 216205 states and 1508341 transitions. [2022-01-18 04:43:02,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-01-18 04:43:02,606 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:43:02,606 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:43:02,622 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Ended with exit code 0 [2022-01-18 04:43:02,822 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,SelfDestructingSolverStorable67 [2022-01-18 04:43:02,822 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-18 04:43:02,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:43:02,822 INFO L85 PathProgramCache]: Analyzing trace with hash -517660847, now seen corresponding path program 62 times [2022-01-18 04:43:02,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:43:02,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158443370] [2022-01-18 04:43:02,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:43:02,822 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:43:02,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:43:02,869 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-01-18 04:43:02,869 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:43:02,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158443370] [2022-01-18 04:43:02,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158443370] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:43:02,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1744396713] [2022-01-18 04:43:02,870 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 04:43:02,870 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:43:02,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:43:02,871 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) [2022-01-18 04:43:02,871 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2022-01-18 04:43:02,904 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 04:43:02,904 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:43:02,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 04:43:02,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:43:03,551 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-01-18 04:43:03,552 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:43:03,630 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-01-18 04:43:03,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1744396713] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:43:03,631 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:43:03,631 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10, 6] total 13 [2022-01-18 04:43:03,631 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145058677] [2022-01-18 04:43:03,631 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:43:03,631 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-18 04:43:03,631 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:43:03,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-18 04:43:03,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-01-18 04:43:03,631 INFO L87 Difference]: Start difference. First operand 216205 states and 1508341 transitions. Second operand has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 13 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:43:09,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:43:09,850 INFO L93 Difference]: Finished difference Result 315458 states and 2162733 transitions. [2022-01-18 04:43:09,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-18 04:43:09,850 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 13 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-01-18 04:43:09,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:43:13,291 INFO L225 Difference]: With dead ends: 315458 [2022-01-18 04:43:13,291 INFO L226 Difference]: Without dead ends: 311710 [2022-01-18 04:43:13,291 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 63 SyntacticMatches, 11 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-01-18 04:43:13,307 INFO L933 BasicCegarLoop]: 67 mSDtfsCounter, 177 mSDsluCounter, 1413 mSDsCounter, 0 mSdLazyCounter, 1281 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 578 SdHoareTripleChecker+Invalid, 1286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-18 04:43:13,307 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [177 Valid, 578 Invalid, 1286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1281 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-18 04:43:13,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311710 states. [2022-01-18 04:43:23,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311710 to 244285. [2022-01-18 04:43:24,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244285 states, 244284 states have (on average 7.047579866057539) internal successors, (1721611), 244284 states have internal predecessors, (1721611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:43:28,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244285 states to 244285 states and 1721611 transitions. [2022-01-18 04:43:28,137 INFO L78 Accepts]: Start accepts. Automaton has 244285 states and 1721611 transitions. Word has length 39 [2022-01-18 04:43:28,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:43:28,137 INFO L470 AbstractCegarLoop]: Abstraction has 244285 states and 1721611 transitions. [2022-01-18 04:43:28,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 13 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:43:28,137 INFO L276 IsEmpty]: Start isEmpty. Operand 244285 states and 1721611 transitions. [2022-01-18 04:43:30,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-01-18 04:43:30,552 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:43:30,552 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:43:30,568 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Forceful destruction successful, exit code 0 [2022-01-18 04:43:30,767 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,SelfDestructingSolverStorable68 [2022-01-18 04:43:30,768 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-18 04:43:30,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:43:30,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1282412483, now seen corresponding path program 63 times [2022-01-18 04:43:30,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:43:30,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58155030] [2022-01-18 04:43:30,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:43:30,768 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:43:30,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:43:30,830 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-01-18 04:43:30,830 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:43:30,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58155030] [2022-01-18 04:43:30,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58155030] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:43:30,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [930706073] [2022-01-18 04:43:30,830 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 04:43:30,831 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:43:30,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:43:30,831 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) [2022-01-18 04:43:30,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2022-01-18 04:43:30,866 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 04:43:30,866 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:43:30,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-18 04:43:30,871 INFO L286 TraceCheckSpWp]: Computing forward predicates...