/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/bench/exp3x3-opt.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-c7b2d19 [2022-03-15 15:42:04,473 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-15 15:42:04,501 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-15 15:42:04,530 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-15 15:42:04,530 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-15 15:42:04,531 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-15 15:42:04,532 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-15 15:42:04,533 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-15 15:42:04,534 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-15 15:42:04,534 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-15 15:42:04,547 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-15 15:42:04,548 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-15 15:42:04,549 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-15 15:42:04,550 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-15 15:42:04,550 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-15 15:42:04,551 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-15 15:42:04,551 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-15 15:42:04,552 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-15 15:42:04,553 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-15 15:42:04,554 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-15 15:42:04,555 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-15 15:42:04,556 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-15 15:42:04,556 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-15 15:42:04,557 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-15 15:42:04,558 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-03-15 15:42:04,558 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-03-15 15:42:04,559 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-03-15 15:42:04,559 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-03-15 15:42:04,559 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-03-15 15:42:04,560 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-03-15 15:42:04,560 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-03-15 15:42:04,560 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-03-15 15:42:04,561 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-03-15 15:42:04,561 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-03-15 15:42:04,562 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-03-15 15:42:04,562 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-03-15 15:42:04,563 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-03-15 15:42:04,563 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-03-15 15:42:04,563 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-15 15:42:04,563 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-15 15:42:04,564 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-15 15:42:04,571 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 [2022-03-15 15:42:04,583 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-15 15:42:04,584 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-15 15:42:04,584 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-15 15:42:04,584 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-15 15:42:04,585 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-15 15:42:04,585 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-15 15:42:04,585 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-15 15:42:04,585 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-15 15:42:04,585 INFO L138 SettingsManager]: * Use SBE=true [2022-03-15 15:42:04,585 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-15 15:42:04,586 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-15 15:42:04,586 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-15 15:42:04,586 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-15 15:42:04,586 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-15 15:42:04,586 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-15 15:42:04,586 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-15 15:42:04,586 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-15 15:42:04,586 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-15 15:42:04,586 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-15 15:42:04,587 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-15 15:42:04,587 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-15 15:42:04,587 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-15 15:42:04,587 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-15 15:42:04,587 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-15 15:42:04,587 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-15 15:42:04,587 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 15:42:04,587 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-15 15:42:04,588 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-15 15:42:04,588 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-15 15:42:04,588 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-15 15:42:04,588 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-15 15:42:04,588 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-15 15:42:04,588 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-15 15:42:04,588 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-15 15:42:04,745 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-15 15:42:04,766 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-15 15:42:04,768 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-15 15:42:04,769 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-03-15 15:42:04,770 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-03-15 15:42:04,771 INFO L432 ainManager$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 [2022-03-15 15:42:04,771 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/bench/exp3x3-opt.wvr.bpl' [2022-03-15 15:42:04,796 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-15 15:42:04,798 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-15 15:42:04,798 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-15 15:42:04,798 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-15 15:42:04,799 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-15 15:42:04,808 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 15.03 03:42:04" (1/1) ... [2022-03-15 15:42:04,816 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 15.03 03:42:04" (1/1) ... [2022-03-15 15:42:04,820 INFO L137 Inliner]: procedures = 7, calls = 6, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-03-15 15:42:04,821 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-15 15:42:04,822 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-15 15:42:04,822 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-15 15:42:04,823 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-15 15:42:04,828 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "exp3x3-opt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 03:42:04" (1/1) ... [2022-03-15 15:42:04,828 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "exp3x3-opt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 03:42:04" (1/1) ... [2022-03-15 15:42:04,828 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "exp3x3-opt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 03:42:04" (1/1) ... [2022-03-15 15:42:04,829 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "exp3x3-opt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 03:42:04" (1/1) ... [2022-03-15 15:42:04,830 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "exp3x3-opt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 03:42:04" (1/1) ... [2022-03-15 15:42:04,832 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "exp3x3-opt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 03:42:04" (1/1) ... [2022-03-15 15:42:04,833 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "exp3x3-opt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 03:42:04" (1/1) ... [2022-03-15 15:42:04,834 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-15 15:42:04,834 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-15 15:42:04,834 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-15 15:42:04,834 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-15 15:42:04,843 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "exp3x3-opt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 03:42:04" (1/1) ... [2022-03-15 15:42:04,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 15:42:04,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:42:04,885 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) [2022-03-15 15:42:04,938 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 [2022-03-15 15:42:04,973 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2022-03-15 15:42:04,973 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-03-15 15:42:04,973 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-03-15 15:42:04,973 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2022-03-15 15:42:04,973 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-03-15 15:42:04,973 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-03-15 15:42:04,973 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-03-15 15:42:04,973 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-15 15:42:04,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-15 15:42:04,974 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2022-03-15 15:42:04,974 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-03-15 15:42:04,975 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-03-15 15:42:04,975 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2022-03-15 15:42:04,975 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-03-15 15:42:04,975 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-03-15 15:42:04,976 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread5 given in one single declaration [2022-03-15 15:42:04,976 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2022-03-15 15:42:04,976 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2022-03-15 15:42:04,978 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread6 given in one single declaration [2022-03-15 15:42:04,978 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2022-03-15 15:42:04,978 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2022-03-15 15:42:04,979 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-03-15 15:42:05,017 INFO L234 CfgBuilder]: Building ICFG [2022-03-15 15:42:05,019 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-15 15:42:05,155 INFO L275 CfgBuilder]: Performing block encoding [2022-03-15 15:42:05,166 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-15 15:42:05,166 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2022-03-15 15:42:05,167 WARN L329 CfgBuilder]: Unexpected successor node of atomic block begin: thread1EXIT is neither atomic block end nor error location. [2022-03-15 15:42:05,167 WARN L329 CfgBuilder]: Unexpected successor node of atomic block begin: thread2EXIT is neither atomic block end nor error location. [2022-03-15 15:42:05,167 WARN L329 CfgBuilder]: Unexpected successor node of atomic block begin: thread3EXIT is neither atomic block end nor error location. [2022-03-15 15:42:05,167 WARN L329 CfgBuilder]: Unexpected successor node of atomic block begin: thread4EXIT is neither atomic block end nor error location. [2022-03-15 15:42:05,167 WARN L329 CfgBuilder]: Unexpected successor node of atomic block begin: thread5EXIT is neither atomic block end nor error location. [2022-03-15 15:42:05,168 WARN L329 CfgBuilder]: Unexpected successor node of atomic block begin: thread6EXIT is neither atomic block end nor error location. [2022-03-15 15:42:05,169 INFO L202 PluginConnector]: Adding new model exp3x3-opt.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 03:42:05 BoogieIcfgContainer [2022-03-15 15:42:05,169 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-15 15:42:05,170 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-15 15:42:05,170 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-15 15:42:05,193 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-15 15:42:05,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "exp3x3-opt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 03:42:04" (1/2) ... [2022-03-15 15:42:05,200 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@791fe8aa and model type exp3x3-opt.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.03 03:42:05, skipping insertion in model container [2022-03-15 15:42:05,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "exp3x3-opt.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 03:42:05" (2/2) ... [2022-03-15 15:42:05,201 INFO L111 eAbstractionObserver]: Analyzing ICFG exp3x3-opt.wvr.bpl [2022-03-15 15:42:05,204 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-15 15:42:05,204 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-15 15:42:05,204 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-15 15:42:05,204 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-15 15:42:05,313 INFO L148 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2022-03-15 15:42:05,393 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-15 15:42:05,397 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mLazyFiniteAutomaton=false, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR, mMcrOptimizeForkJoin=true, mMcrOverapproximateWrwc=true [2022-03-15 15:42:05,398 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-03-15 15:42:05,423 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 48 places, 35 transitions, 118 flow [2022-03-15 15:42:05,622 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) [2022-03-15 15:42:05,625 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) [2022-03-15 15:42:05,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:42:05,637 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:42:05,638 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] [2022-03-15 15:42:05,638 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-03-15 15:42:05,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:42:05,642 INFO L85 PathProgramCache]: Analyzing trace with hash -931305045, now seen corresponding path program 1 times [2022-03-15 15:42:05,648 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:42:05,648 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748594849] [2022-03-15 15:42:05,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:42:05,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:42:05,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:42:05,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:42:05,850 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:42:05,850 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748594849] [2022-03-15 15:42:05,851 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748594849] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 15:42:05,851 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 15:42:05,851 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-03-15 15:42:05,853 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138507750] [2022-03-15 15:42:05,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 15:42:05,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-15 15:42:05,858 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:42:05,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-15 15:42:05,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-15 15:42:05,913 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) [2022-03-15 15:42:06,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:42:06,052 INFO L93 Difference]: Finished difference Result 352 states and 1926 transitions. [2022-03-15 15:42:06,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-15 15:42:06,056 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 [2022-03-15 15:42:06,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:42:06,084 INFO L225 Difference]: With dead ends: 352 [2022-03-15 15:42:06,084 INFO L226 Difference]: Without dead ends: 319 [2022-03-15 15:42:06,085 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 [2022-03-15 15:42:06,087 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 4 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 15:42:06,088 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 16 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 15:42:06,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2022-03-15 15:42:06,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 319. [2022-03-15 15:42:06,249 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) [2022-03-15 15:42:06,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 1748 transitions. [2022-03-15 15:42:06,273 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 1748 transitions. Word has length 21 [2022-03-15 15:42:06,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:42:06,273 INFO L470 AbstractCegarLoop]: Abstraction has 319 states and 1748 transitions. [2022-03-15 15:42:06,274 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) [2022-03-15 15:42:06,274 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 1748 transitions. [2022-03-15 15:42:06,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-03-15 15:42:06,277 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:42:06,277 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] [2022-03-15 15:42:06,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-15 15:42:06,277 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-03-15 15:42:06,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:42:06,278 INFO L85 PathProgramCache]: Analyzing trace with hash -976021450, now seen corresponding path program 1 times [2022-03-15 15:42:06,278 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:42:06,278 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140437648] [2022-03-15 15:42:06,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:42:06,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:42:06,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:42:06,346 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 15:42:06,346 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:42:06,346 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140437648] [2022-03-15 15:42:06,347 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140437648] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 15:42:06,347 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 15:42:06,363 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-03-15 15:42:06,363 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209211035] [2022-03-15 15:42:06,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 15:42:06,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-15 15:42:06,365 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:42:06,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-15 15:42:06,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-15 15:42:06,365 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) [2022-03-15 15:42:06,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:42:06,447 INFO L93 Difference]: Finished difference Result 628 states and 3476 transitions. [2022-03-15 15:42:06,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-15 15:42:06,448 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 [2022-03-15 15:42:06,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:42:06,454 INFO L225 Difference]: With dead ends: 628 [2022-03-15 15:42:06,455 INFO L226 Difference]: Without dead ends: 541 [2022-03-15 15:42:06,456 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 [2022-03-15 15:42:06,458 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 3 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2022-03-15 15:42:06,458 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] [2022-03-15 15:42:06,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2022-03-15 15:42:06,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 541. [2022-03-15 15:42:06,532 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) [2022-03-15 15:42:06,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 3017 transitions. [2022-03-15 15:42:06,535 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 3017 transitions. Word has length 22 [2022-03-15 15:42:06,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:42:06,536 INFO L470 AbstractCegarLoop]: Abstraction has 541 states and 3017 transitions. [2022-03-15 15:42:06,536 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) [2022-03-15 15:42:06,536 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 3017 transitions. [2022-03-15 15:42:06,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-03-15 15:42:06,562 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:42:06,562 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] [2022-03-15 15:42:06,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-15 15:42:06,564 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-03-15 15:42:06,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:42:06,571 INFO L85 PathProgramCache]: Analyzing trace with hash 93496637, now seen corresponding path program 1 times [2022-03-15 15:42:06,572 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:42:06,572 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618889011] [2022-03-15 15:42:06,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:42:06,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:42:06,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:42:06,629 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 15:42:06,629 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:42:06,629 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618889011] [2022-03-15 15:42:06,630 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618889011] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 15:42:06,630 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 15:42:06,630 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-03-15 15:42:06,630 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716445319] [2022-03-15 15:42:06,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 15:42:06,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-15 15:42:06,635 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:42:06,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-15 15:42:06,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-15 15:42:06,637 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) [2022-03-15 15:42:06,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:42:06,728 INFO L93 Difference]: Finished difference Result 1078 states and 6030 transitions. [2022-03-15 15:42:06,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-15 15:42:06,728 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 [2022-03-15 15:42:06,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:42:06,735 INFO L225 Difference]: With dead ends: 1078 [2022-03-15 15:42:06,736 INFO L226 Difference]: Without dead ends: 859 [2022-03-15 15:42:06,753 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 [2022-03-15 15:42:06,756 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, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 15:42:06,757 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 16 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 15:42:06,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2022-03-15 15:42:06,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 859. [2022-03-15 15:42:06,801 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) [2022-03-15 15:42:06,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 859 states to 859 states and 4863 transitions. [2022-03-15 15:42:06,850 INFO L78 Accepts]: Start accepts. Automaton has 859 states and 4863 transitions. Word has length 23 [2022-03-15 15:42:06,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:42:06,850 INFO L470 AbstractCegarLoop]: Abstraction has 859 states and 4863 transitions. [2022-03-15 15:42:06,850 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) [2022-03-15 15:42:06,850 INFO L276 IsEmpty]: Start isEmpty. Operand 859 states and 4863 transitions. [2022-03-15 15:42:06,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-03-15 15:42:06,853 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:42:06,853 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] [2022-03-15 15:42:06,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-15 15:42:06,854 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-03-15 15:42:06,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:42:06,855 INFO L85 PathProgramCache]: Analyzing trace with hash 1806147054, now seen corresponding path program 1 times [2022-03-15 15:42:06,855 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:42:06,855 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605016560] [2022-03-15 15:42:06,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:42:06,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:42:06,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:42:06,944 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 15:42:06,944 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:42:06,944 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605016560] [2022-03-15 15:42:06,945 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605016560] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:42:06,945 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [861910940] [2022-03-15 15:42:06,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:42:06,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:42:06,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:42:06,946 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) [2022-03-15 15:42:06,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-15 15:42:07,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:42:07,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 3 conjunts are in the unsatisfiable core [2022-03-15 15:42:07,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:42:07,113 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 15:42:07,113 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:42:07,176 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 15:42:07,177 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [861910940] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:42:07,178 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:42:07,178 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2022-03-15 15:42:07,180 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271372532] [2022-03-15 15:42:07,180 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:42:07,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-15 15:42:07,180 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:42:07,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-15 15:42:07,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-03-15 15:42:07,181 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) [2022-03-15 15:42:07,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:42:07,331 INFO L93 Difference]: Finished difference Result 1936 states and 10970 transitions. [2022-03-15 15:42:07,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-15 15:42:07,331 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 [2022-03-15 15:42:07,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:42:07,339 INFO L225 Difference]: With dead ends: 1936 [2022-03-15 15:42:07,339 INFO L226 Difference]: Without dead ends: 922 [2022-03-15 15:42:07,339 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 [2022-03-15 15:42:07,340 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 [2022-03-15 15:42:07,340 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] [2022-03-15 15:42:07,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 922 states. [2022-03-15 15:42:07,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 922 to 610. [2022-03-15 15:42:07,359 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) [2022-03-15 15:42:07,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 3411 transitions. [2022-03-15 15:42:07,362 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 3411 transitions. Word has length 24 [2022-03-15 15:42:07,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:42:07,363 INFO L470 AbstractCegarLoop]: Abstraction has 610 states and 3411 transitions. [2022-03-15 15:42:07,363 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) [2022-03-15 15:42:07,363 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 3411 transitions. [2022-03-15 15:42:07,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-03-15 15:42:07,365 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:42:07,365 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] [2022-03-15 15:42:07,406 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-15 15:42:07,582 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 [2022-03-15 15:42:07,583 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-03-15 15:42:07,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:42:07,583 INFO L85 PathProgramCache]: Analyzing trace with hash 860655352, now seen corresponding path program 1 times [2022-03-15 15:42:07,583 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:42:07,584 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658019923] [2022-03-15 15:42:07,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:42:07,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:42:07,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:42:07,651 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 15:42:07,651 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:42:07,651 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658019923] [2022-03-15 15:42:07,652 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658019923] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:42:07,652 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [609826639] [2022-03-15 15:42:07,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:42:07,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:42:07,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:42:07,668 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) [2022-03-15 15:42:07,718 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-15 15:42:07,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:42:07,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 3 conjunts are in the unsatisfiable core [2022-03-15 15:42:07,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:42:07,821 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 15:42:07,821 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:42:07,876 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 15:42:07,876 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [609826639] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:42:07,877 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:42:07,879 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2022-03-15 15:42:07,903 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981567739] [2022-03-15 15:42:07,905 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:42:07,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-15 15:42:07,905 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:42:07,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-15 15:42:07,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-03-15 15:42:07,906 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) [2022-03-15 15:42:08,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:42:08,033 INFO L93 Difference]: Finished difference Result 2023 states and 11454 transitions. [2022-03-15 15:42:08,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-15 15:42:08,033 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 [2022-03-15 15:42:08,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:42:08,042 INFO L225 Difference]: With dead ends: 2023 [2022-03-15 15:42:08,042 INFO L226 Difference]: Without dead ends: 1163 [2022-03-15 15:42:08,043 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 [2022-03-15 15:42:08,043 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 [2022-03-15 15:42:08,043 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] [2022-03-15 15:42:08,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1163 states. [2022-03-15 15:42:08,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1163 to 1163. [2022-03-15 15:42:08,073 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) [2022-03-15 15:42:08,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1163 states to 1163 states and 6623 transitions. [2022-03-15 15:42:08,079 INFO L78 Accepts]: Start accepts. Automaton has 1163 states and 6623 transitions. Word has length 24 [2022-03-15 15:42:08,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:42:08,079 INFO L470 AbstractCegarLoop]: Abstraction has 1163 states and 6623 transitions. [2022-03-15 15:42:08,079 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) [2022-03-15 15:42:08,079 INFO L276 IsEmpty]: Start isEmpty. Operand 1163 states and 6623 transitions. [2022-03-15 15:42:08,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-03-15 15:42:08,083 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:42:08,083 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] [2022-03-15 15:42:08,102 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-15 15:42:08,299 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 [2022-03-15 15:42:08,300 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-03-15 15:42:08,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:42:08,300 INFO L85 PathProgramCache]: Analyzing trace with hash -103790194, now seen corresponding path program 1 times [2022-03-15 15:42:08,300 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:42:08,300 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486277392] [2022-03-15 15:42:08,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:42:08,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:42:08,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:42:08,414 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-15 15:42:08,414 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:42:08,414 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486277392] [2022-03-15 15:42:08,414 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486277392] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:42:08,414 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1714785549] [2022-03-15 15:42:08,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:42:08,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:42:08,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:42:08,423 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) [2022-03-15 15:42:08,476 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-15 15:42:08,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:42:08,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 3 conjunts are in the unsatisfiable core [2022-03-15 15:42:08,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:42:08,537 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-15 15:42:08,537 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:42:08,583 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-15 15:42:08,583 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1714785549] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:42:08,583 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:42:08,583 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2022-03-15 15:42:08,584 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336022019] [2022-03-15 15:42:08,584 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:42:08,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-15 15:42:08,585 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:42:08,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-15 15:42:08,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-03-15 15:42:08,585 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) [2022-03-15 15:42:08,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:42:08,786 INFO L93 Difference]: Finished difference Result 1806 states and 10329 transitions. [2022-03-15 15:42:08,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-15 15:42:08,787 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 [2022-03-15 15:42:08,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:42:08,796 INFO L225 Difference]: With dead ends: 1806 [2022-03-15 15:42:08,796 INFO L226 Difference]: Without dead ends: 1298 [2022-03-15 15:42:08,796 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 [2022-03-15 15:42:08,799 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 16 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 15:42:08,799 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 48 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 15:42:08,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1298 states. [2022-03-15 15:42:08,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1298 to 992. [2022-03-15 15:42:08,836 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) [2022-03-15 15:42:08,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 992 states to 992 states and 5651 transitions. [2022-03-15 15:42:08,841 INFO L78 Accepts]: Start accepts. Automaton has 992 states and 5651 transitions. Word has length 26 [2022-03-15 15:42:08,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:42:08,855 INFO L470 AbstractCegarLoop]: Abstraction has 992 states and 5651 transitions. [2022-03-15 15:42:08,855 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) [2022-03-15 15:42:08,856 INFO L276 IsEmpty]: Start isEmpty. Operand 992 states and 5651 transitions. [2022-03-15 15:42:08,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-03-15 15:42:08,861 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:42:08,861 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] [2022-03-15 15:42:08,880 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-15 15:42:09,074 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 [2022-03-15 15:42:09,075 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-03-15 15:42:09,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:42:09,075 INFO L85 PathProgramCache]: Analyzing trace with hash -1915665608, now seen corresponding path program 1 times [2022-03-15 15:42:09,075 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:42:09,075 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468335578] [2022-03-15 15:42:09,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:42:09,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:42:09,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:42:09,114 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-15 15:42:09,114 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:42:09,114 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468335578] [2022-03-15 15:42:09,114 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468335578] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:42:09,114 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [452176633] [2022-03-15 15:42:09,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:42:09,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:42:09,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:42:09,116 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) [2022-03-15 15:42:09,117 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-15 15:42:09,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:42:09,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 3 conjunts are in the unsatisfiable core [2022-03-15 15:42:09,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:42:09,245 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-15 15:42:09,245 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:42:09,295 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-15 15:42:09,295 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [452176633] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:42:09,295 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:42:09,295 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2022-03-15 15:42:09,295 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675380398] [2022-03-15 15:42:09,295 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:42:09,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-15 15:42:09,296 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:42:09,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-15 15:42:09,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-03-15 15:42:09,296 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) [2022-03-15 15:42:09,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:42:09,349 INFO L93 Difference]: Finished difference Result 1941 states and 11157 transitions. [2022-03-15 15:42:09,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-15 15:42:09,349 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 [2022-03-15 15:42:09,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:42:09,360 INFO L225 Difference]: With dead ends: 1941 [2022-03-15 15:42:09,360 INFO L226 Difference]: Without dead ends: 1460 [2022-03-15 15:42:09,360 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 [2022-03-15 15:42:09,361 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 [2022-03-15 15:42:09,361 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] [2022-03-15 15:42:09,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1460 states. [2022-03-15 15:42:09,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1460 to 1460. [2022-03-15 15:42:09,397 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) [2022-03-15 15:42:09,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1460 states to 1460 states and 8387 transitions. [2022-03-15 15:42:09,403 INFO L78 Accepts]: Start accepts. Automaton has 1460 states and 8387 transitions. Word has length 26 [2022-03-15 15:42:09,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:42:09,403 INFO L470 AbstractCegarLoop]: Abstraction has 1460 states and 8387 transitions. [2022-03-15 15:42:09,403 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) [2022-03-15 15:42:09,403 INFO L276 IsEmpty]: Start isEmpty. Operand 1460 states and 8387 transitions. [2022-03-15 15:42:09,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-03-15 15:42:09,420 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:42:09,420 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] [2022-03-15 15:42:09,467 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-03-15 15:42:09,622 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 [2022-03-15 15:42:09,622 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-03-15 15:42:09,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:42:09,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1029298811, now seen corresponding path program 1 times [2022-03-15 15:42:09,624 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:42:09,624 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904271404] [2022-03-15 15:42:09,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:42:09,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:42:09,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:42:09,762 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-15 15:42:09,762 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:42:09,763 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904271404] [2022-03-15 15:42:09,763 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904271404] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:42:09,763 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [808658134] [2022-03-15 15:42:09,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:42:09,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:42:09,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:42:09,773 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) [2022-03-15 15:42:09,786 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-15 15:42:09,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:42:09,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-15 15:42:09,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:42:09,964 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-15 15:42:09,965 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:42:10,018 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-15 15:42:10,019 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [808658134] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:42:10,019 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:42:10,019 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 3] total 6 [2022-03-15 15:42:10,019 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793216160] [2022-03-15 15:42:10,019 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:42:10,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-15 15:42:10,019 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:42:10,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-15 15:42:10,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-03-15 15:42:10,020 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) [2022-03-15 15:42:10,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:42:10,259 INFO L93 Difference]: Finished difference Result 6508 states and 37469 transitions. [2022-03-15 15:42:10,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-15 15:42:10,259 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 [2022-03-15 15:42:10,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:42:10,299 INFO L225 Difference]: With dead ends: 6508 [2022-03-15 15:42:10,299 INFO L226 Difference]: Without dead ends: 5595 [2022-03-15 15:42:10,299 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 [2022-03-15 15:42:10,300 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 [2022-03-15 15:42:10,300 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] [2022-03-15 15:42:10,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5595 states. [2022-03-15 15:42:10,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5595 to 3403. [2022-03-15 15:42:10,484 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) [2022-03-15 15:42:10,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3403 states to 3403 states and 21448 transitions. [2022-03-15 15:42:10,511 INFO L78 Accepts]: Start accepts. Automaton has 3403 states and 21448 transitions. Word has length 27 [2022-03-15 15:42:10,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:42:10,511 INFO L470 AbstractCegarLoop]: Abstraction has 3403 states and 21448 transitions. [2022-03-15 15:42:10,511 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) [2022-03-15 15:42:10,512 INFO L276 IsEmpty]: Start isEmpty. Operand 3403 states and 21448 transitions. [2022-03-15 15:42:10,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-03-15 15:42:10,528 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:42:10,529 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] [2022-03-15 15:42:10,571 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-03-15 15:42:10,743 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 [2022-03-15 15:42:10,744 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-03-15 15:42:10,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:42:10,744 INFO L85 PathProgramCache]: Analyzing trace with hash 460516603, now seen corresponding path program 2 times [2022-03-15 15:42:10,744 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:42:10,744 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231396556] [2022-03-15 15:42:10,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:42:10,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:42:10,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:42:10,787 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-03-15 15:42:10,787 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:42:10,787 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231396556] [2022-03-15 15:42:10,787 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231396556] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:42:10,787 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [646959874] [2022-03-15 15:42:10,787 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 15:42:10,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:42:10,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:42:10,789 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) [2022-03-15 15:42:10,815 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-03-15 15:42:10,848 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 15:42:10,848 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:42:10,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-15 15:42:10,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:42:10,932 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-15 15:42:10,932 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:42:10,973 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-15 15:42:10,973 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [646959874] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:42:10,974 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:42:10,974 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 3] total 6 [2022-03-15 15:42:10,974 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969088979] [2022-03-15 15:42:10,974 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:42:10,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-15 15:42:10,974 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:42:10,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-15 15:42:10,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-03-15 15:42:10,975 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) [2022-03-15 15:42:11,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:42:11,267 INFO L93 Difference]: Finished difference Result 11115 states and 69290 transitions. [2022-03-15 15:42:11,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-15 15:42:11,267 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 [2022-03-15 15:42:11,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:42:11,322 INFO L225 Difference]: With dead ends: 11115 [2022-03-15 15:42:11,322 INFO L226 Difference]: Without dead ends: 10118 [2022-03-15 15:42:11,322 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 [2022-03-15 15:42:11,323 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 [2022-03-15 15:42:11,323 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] [2022-03-15 15:42:11,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10118 states. [2022-03-15 15:42:11,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10118 to 6709. [2022-03-15 15:42:11,657 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) [2022-03-15 15:42:11,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6709 states to 6709 states and 45152 transitions. [2022-03-15 15:42:11,693 INFO L78 Accepts]: Start accepts. Automaton has 6709 states and 45152 transitions. Word has length 27 [2022-03-15 15:42:11,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:42:11,693 INFO L470 AbstractCegarLoop]: Abstraction has 6709 states and 45152 transitions. [2022-03-15 15:42:11,693 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) [2022-03-15 15:42:11,694 INFO L276 IsEmpty]: Start isEmpty. Operand 6709 states and 45152 transitions. [2022-03-15 15:42:11,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-03-15 15:42:11,717 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:42:11,717 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] [2022-03-15 15:42:11,736 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-03-15 15:42:11,934 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 [2022-03-15 15:42:11,934 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-03-15 15:42:11,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:42:11,935 INFO L85 PathProgramCache]: Analyzing trace with hash -90777990, now seen corresponding path program 3 times [2022-03-15 15:42:11,935 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:42:11,935 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728280344] [2022-03-15 15:42:11,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:42:11,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:42:12,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:42:12,088 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-15 15:42:12,088 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:42:12,088 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728280344] [2022-03-15 15:42:12,088 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728280344] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:42:12,088 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [515354880] [2022-03-15 15:42:12,088 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 15:42:12,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:42:12,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:42:12,089 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) [2022-03-15 15:42:12,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-03-15 15:42:12,125 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-15 15:42:12,125 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:42:12,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-15 15:42:12,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:42:12,258 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-15 15:42:12,259 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:42:12,304 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-15 15:42:12,304 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [515354880] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:42:12,304 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:42:12,304 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 7 [2022-03-15 15:42:12,306 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176371437] [2022-03-15 15:42:12,306 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:42:12,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-15 15:42:12,307 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:42:12,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-15 15:42:12,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-15 15:42:12,307 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) [2022-03-15 15:42:12,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:42:12,495 INFO L93 Difference]: Finished difference Result 9291 states and 60293 transitions. [2022-03-15 15:42:12,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-15 15:42:12,496 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 [2022-03-15 15:42:12,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:42:12,535 INFO L225 Difference]: With dead ends: 9291 [2022-03-15 15:42:12,535 INFO L226 Difference]: Without dead ends: 7946 [2022-03-15 15:42:12,536 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 [2022-03-15 15:42:12,536 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, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 15:42:12,537 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 125 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 15:42:12,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7946 states. [2022-03-15 15:42:12,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7946 to 6226. [2022-03-15 15:42:12,765 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) [2022-03-15 15:42:12,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6226 states to 6226 states and 41449 transitions. [2022-03-15 15:42:12,800 INFO L78 Accepts]: Start accepts. Automaton has 6226 states and 41449 transitions. Word has length 28 [2022-03-15 15:42:12,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:42:12,801 INFO L470 AbstractCegarLoop]: Abstraction has 6226 states and 41449 transitions. [2022-03-15 15:42:12,801 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) [2022-03-15 15:42:12,801 INFO L276 IsEmpty]: Start isEmpty. Operand 6226 states and 41449 transitions. [2022-03-15 15:42:12,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-03-15 15:42:12,901 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:42:12,901 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] [2022-03-15 15:42:12,918 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-03-15 15:42:13,113 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 [2022-03-15 15:42:13,114 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-03-15 15:42:13,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:42:13,114 INFO L85 PathProgramCache]: Analyzing trace with hash 292327756, now seen corresponding path program 4 times [2022-03-15 15:42:13,114 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:42:13,114 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286344226] [2022-03-15 15:42:13,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:42:13,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:42:13,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:42:13,173 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-15 15:42:13,173 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:42:13,173 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286344226] [2022-03-15 15:42:13,173 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286344226] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:42:13,173 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883996032] [2022-03-15 15:42:13,173 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 15:42:13,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:42:13,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:42:13,175 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) [2022-03-15 15:42:13,203 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-03-15 15:42:13,232 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 15:42:13,232 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:42:13,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-15 15:42:13,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:42:13,321 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-15 15:42:13,321 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:42:13,422 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-15 15:42:13,422 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1883996032] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:42:13,422 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:42:13,422 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2022-03-15 15:42:13,422 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834221651] [2022-03-15 15:42:13,423 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:42:13,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-15 15:42:13,423 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:42:13,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-15 15:42:13,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-03-15 15:42:13,423 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) [2022-03-15 15:42:13,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:42:13,648 INFO L93 Difference]: Finished difference Result 9667 states and 62399 transitions. [2022-03-15 15:42:13,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-15 15:42:13,655 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 [2022-03-15 15:42:13,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:42:13,697 INFO L225 Difference]: With dead ends: 9667 [2022-03-15 15:42:13,697 INFO L226 Difference]: Without dead ends: 7372 [2022-03-15 15:42:13,697 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 49 SyntacticMatches, 4 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-03-15 15:42:13,698 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 [2022-03-15 15:42:13,698 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] [2022-03-15 15:42:13,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7372 states. [2022-03-15 15:42:13,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7372 to 6226. [2022-03-15 15:42:13,915 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) [2022-03-15 15:42:13,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6226 states to 6226 states and 40877 transitions. [2022-03-15 15:42:13,945 INFO L78 Accepts]: Start accepts. Automaton has 6226 states and 40877 transitions. Word has length 28 [2022-03-15 15:42:13,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:42:13,945 INFO L470 AbstractCegarLoop]: Abstraction has 6226 states and 40877 transitions. [2022-03-15 15:42:13,946 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) [2022-03-15 15:42:13,946 INFO L276 IsEmpty]: Start isEmpty. Operand 6226 states and 40877 transitions. [2022-03-15 15:42:13,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-03-15 15:42:13,963 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:42:13,963 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] [2022-03-15 15:42:13,980 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-03-15 15:42:14,179 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 [2022-03-15 15:42:14,180 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-03-15 15:42:14,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:42:14,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1127701574, now seen corresponding path program 5 times [2022-03-15 15:42:14,181 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:42:14,181 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642537860] [2022-03-15 15:42:14,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:42:14,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:42:14,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:42:14,285 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-15 15:42:14,286 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:42:14,286 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642537860] [2022-03-15 15:42:14,286 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642537860] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:42:14,286 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1644437952] [2022-03-15 15:42:14,286 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 15:42:14,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:42:14,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:42:14,295 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) [2022-03-15 15:42:14,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-03-15 15:42:14,327 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-15 15:42:14,327 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:42:14,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-15 15:42:14,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:42:14,415 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-15 15:42:14,415 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:42:14,464 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-03-15 15:42:14,464 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1644437952] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:42:14,464 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:42:14,465 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 7 [2022-03-15 15:42:14,465 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115728901] [2022-03-15 15:42:14,465 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:42:14,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-15 15:42:14,465 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:42:14,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-15 15:42:14,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-15 15:42:14,466 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) [2022-03-15 15:42:14,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:42:14,657 INFO L93 Difference]: Finished difference Result 9093 states and 58145 transitions. [2022-03-15 15:42:14,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-15 15:42:14,657 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 [2022-03-15 15:42:14,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:42:14,748 INFO L225 Difference]: With dead ends: 9093 [2022-03-15 15:42:14,749 INFO L226 Difference]: Without dead ends: 7656 [2022-03-15 15:42:14,749 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 [2022-03-15 15:42:14,749 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 [2022-03-15 15:42:14,749 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] [2022-03-15 15:42:14,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7656 states. [2022-03-15 15:42:14,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7656 to 5654. [2022-03-15 15:42:14,871 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) [2022-03-15 15:42:14,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5654 states to 5654 states and 36339 transitions. [2022-03-15 15:42:14,899 INFO L78 Accepts]: Start accepts. Automaton has 5654 states and 36339 transitions. Word has length 28 [2022-03-15 15:42:14,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:42:14,900 INFO L470 AbstractCegarLoop]: Abstraction has 5654 states and 36339 transitions. [2022-03-15 15:42:14,900 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) [2022-03-15 15:42:14,900 INFO L276 IsEmpty]: Start isEmpty. Operand 5654 states and 36339 transitions. [2022-03-15 15:42:14,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-03-15 15:42:14,916 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:42:14,916 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] [2022-03-15 15:42:14,934 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-03-15 15:42:15,132 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 [2022-03-15 15:42:15,132 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-03-15 15:42:15,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:42:15,133 INFO L85 PathProgramCache]: Analyzing trace with hash -1808352738, now seen corresponding path program 6 times [2022-03-15 15:42:15,133 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:42:15,133 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253124633] [2022-03-15 15:42:15,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:42:15,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:42:15,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:42:15,158 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-15 15:42:15,158 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:42:15,158 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253124633] [2022-03-15 15:42:15,158 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253124633] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:42:15,158 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1455160893] [2022-03-15 15:42:15,158 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 15:42:15,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:42:15,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:42:15,159 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) [2022-03-15 15:42:15,176 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-03-15 15:42:15,206 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-15 15:42:15,206 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:42:15,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-15 15:42:15,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:42:15,272 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-15 15:42:15,272 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:42:15,316 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-15 15:42:15,316 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1455160893] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:42:15,316 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:42:15,316 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 7 [2022-03-15 15:42:15,317 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221774411] [2022-03-15 15:42:15,317 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:42:15,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-15 15:42:15,317 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:42:15,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-15 15:42:15,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-15 15:42:15,317 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) [2022-03-15 15:42:15,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:42:15,507 INFO L93 Difference]: Finished difference Result 7946 states and 50780 transitions. [2022-03-15 15:42:15,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-15 15:42:15,507 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 [2022-03-15 15:42:15,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:42:15,532 INFO L225 Difference]: With dead ends: 7946 [2022-03-15 15:42:15,533 INFO L226 Difference]: Without dead ends: 6800 [2022-03-15 15:42:15,533 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 [2022-03-15 15:42:15,533 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 [2022-03-15 15:42:15,533 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] [2022-03-15 15:42:15,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6800 states. [2022-03-15 15:42:15,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6800 to 5368. [2022-03-15 15:42:15,648 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) [2022-03-15 15:42:15,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5368 states to 5368 states and 34213 transitions. [2022-03-15 15:42:15,672 INFO L78 Accepts]: Start accepts. Automaton has 5368 states and 34213 transitions. Word has length 28 [2022-03-15 15:42:15,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:42:15,672 INFO L470 AbstractCegarLoop]: Abstraction has 5368 states and 34213 transitions. [2022-03-15 15:42:15,672 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) [2022-03-15 15:42:15,672 INFO L276 IsEmpty]: Start isEmpty. Operand 5368 states and 34213 transitions. [2022-03-15 15:42:15,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-03-15 15:42:15,687 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:42:15,687 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] [2022-03-15 15:42:15,705 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-03-15 15:42:15,902 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 [2022-03-15 15:42:15,903 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-03-15 15:42:15,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:42:15,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1475497308, now seen corresponding path program 7 times [2022-03-15 15:42:15,903 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:42:15,903 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467791196] [2022-03-15 15:42:15,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:42:15,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:42:15,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:42:15,927 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-15 15:42:15,927 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:42:15,927 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467791196] [2022-03-15 15:42:15,927 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467791196] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:42:15,927 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [932990538] [2022-03-15 15:42:15,928 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 15:42:15,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:42:15,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:42:15,936 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) [2022-03-15 15:42:15,937 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-03-15 15:42:15,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:42:15,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-15 15:42:15,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:42:16,037 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-15 15:42:16,037 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:42:16,083 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-15 15:42:16,083 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [932990538] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:42:16,083 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:42:16,083 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2022-03-15 15:42:16,083 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467381055] [2022-03-15 15:42:16,083 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:42:16,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-15 15:42:16,083 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:42:16,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-15 15:42:16,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-03-15 15:42:16,086 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) [2022-03-15 15:42:16,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:42:16,338 INFO L93 Difference]: Finished difference Result 7087 states and 45258 transitions. [2022-03-15 15:42:16,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-15 15:42:16,338 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 [2022-03-15 15:42:16,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:42:16,362 INFO L225 Difference]: With dead ends: 7087 [2022-03-15 15:42:16,362 INFO L226 Difference]: Without dead ends: 6512 [2022-03-15 15:42:16,363 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 [2022-03-15 15:42:16,363 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 [2022-03-15 15:42:16,363 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] [2022-03-15 15:42:16,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6512 states. [2022-03-15 15:42:16,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6512 to 5940. [2022-03-15 15:42:16,471 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) [2022-03-15 15:42:16,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5940 states to 5940 states and 37893 transitions. [2022-03-15 15:42:16,496 INFO L78 Accepts]: Start accepts. Automaton has 5940 states and 37893 transitions. Word has length 28 [2022-03-15 15:42:16,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:42:16,496 INFO L470 AbstractCegarLoop]: Abstraction has 5940 states and 37893 transitions. [2022-03-15 15:42:16,497 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) [2022-03-15 15:42:16,497 INFO L276 IsEmpty]: Start isEmpty. Operand 5940 states and 37893 transitions. [2022-03-15 15:42:16,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-03-15 15:42:16,512 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:42:16,512 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] [2022-03-15 15:42:16,532 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-03-15 15:42:16,728 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 [2022-03-15 15:42:16,728 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-03-15 15:42:16,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:42:16,728 INFO L85 PathProgramCache]: Analyzing trace with hash 1880877169, now seen corresponding path program 8 times [2022-03-15 15:42:16,729 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:42:16,729 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093696372] [2022-03-15 15:42:16,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:42:16,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:42:16,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:42:16,777 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-15 15:42:16,778 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:42:16,778 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093696372] [2022-03-15 15:42:16,778 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093696372] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:42:16,778 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1581991531] [2022-03-15 15:42:16,778 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 15:42:16,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:42:16,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:42:16,800 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) [2022-03-15 15:42:16,801 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-03-15 15:42:16,831 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 15:42:16,831 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:42:16,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-15 15:42:16,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:42:17,033 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-15 15:42:17,033 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:42:17,099 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-15 15:42:17,099 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1581991531] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:42:17,099 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:42:17,099 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 6 [2022-03-15 15:42:17,099 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337512963] [2022-03-15 15:42:17,099 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:42:17,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-15 15:42:17,100 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:42:17,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-15 15:42:17,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-03-15 15:42:17,100 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) [2022-03-15 15:42:17,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:42:17,416 INFO L93 Difference]: Finished difference Result 11496 states and 73614 transitions. [2022-03-15 15:42:17,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-15 15:42:17,416 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 [2022-03-15 15:42:17,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:42:17,467 INFO L225 Difference]: With dead ends: 11496 [2022-03-15 15:42:17,467 INFO L226 Difference]: Without dead ends: 11208 [2022-03-15 15:42:17,469 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 [2022-03-15 15:42:17,471 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 [2022-03-15 15:42:17,472 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] [2022-03-15 15:42:17,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11208 states. [2022-03-15 15:42:17,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11208 to 9196. [2022-03-15 15:42:17,760 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) [2022-03-15 15:42:17,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9196 states to 9196 states and 60881 transitions. [2022-03-15 15:42:17,814 INFO L78 Accepts]: Start accepts. Automaton has 9196 states and 60881 transitions. Word has length 29 [2022-03-15 15:42:17,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:42:17,814 INFO L470 AbstractCegarLoop]: Abstraction has 9196 states and 60881 transitions. [2022-03-15 15:42:17,814 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) [2022-03-15 15:42:17,814 INFO L276 IsEmpty]: Start isEmpty. Operand 9196 states and 60881 transitions. [2022-03-15 15:42:17,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-03-15 15:42:17,935 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:42:17,935 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] [2022-03-15 15:42:17,951 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-03-15 15:42:18,136 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 [2022-03-15 15:42:18,136 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-03-15 15:42:18,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:42:18,137 INFO L85 PathProgramCache]: Analyzing trace with hash -847814829, now seen corresponding path program 9 times [2022-03-15 15:42:18,137 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:42:18,137 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253192076] [2022-03-15 15:42:18,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:42:18,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:42:18,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:42:18,208 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-03-15 15:42:18,208 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:42:18,208 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253192076] [2022-03-15 15:42:18,208 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253192076] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:42:18,208 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [334399323] [2022-03-15 15:42:18,208 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 15:42:18,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:42:18,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:42:18,209 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) [2022-03-15 15:42:18,258 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-03-15 15:42:18,262 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-15 15:42:18,262 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:42:18,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-15 15:42:18,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:42:18,375 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-03-15 15:42:18,375 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:42:18,414 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-03-15 15:42:18,414 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [334399323] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:42:18,414 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:42:18,414 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 3] total 7 [2022-03-15 15:42:18,415 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049547678] [2022-03-15 15:42:18,415 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:42:18,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-15 15:42:18,415 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:42:18,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-15 15:42:18,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-03-15 15:42:18,416 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) [2022-03-15 15:42:18,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:42:18,984 INFO L93 Difference]: Finished difference Result 25018 states and 159726 transitions. [2022-03-15 15:42:18,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-15 15:42:18,984 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 [2022-03-15 15:42:18,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:42:19,109 INFO L225 Difference]: With dead ends: 25018 [2022-03-15 15:42:19,109 INFO L226 Difference]: Without dead ends: 22353 [2022-03-15 15:42:19,109 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 [2022-03-15 15:42:19,110 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 [2022-03-15 15:42:19,111 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] [2022-03-15 15:42:19,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22353 states. [2022-03-15 15:42:19,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22353 to 13742. [2022-03-15 15:42:19,763 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) [2022-03-15 15:42:19,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13742 states to 13742 states and 95168 transitions. [2022-03-15 15:42:19,839 INFO L78 Accepts]: Start accepts. Automaton has 13742 states and 95168 transitions. Word has length 29 [2022-03-15 15:42:19,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:42:19,840 INFO L470 AbstractCegarLoop]: Abstraction has 13742 states and 95168 transitions. [2022-03-15 15:42:19,840 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) [2022-03-15 15:42:19,840 INFO L276 IsEmpty]: Start isEmpty. Operand 13742 states and 95168 transitions. [2022-03-15 15:42:19,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-03-15 15:42:19,884 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:42:19,884 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] [2022-03-15 15:42:19,900 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-03-15 15:42:20,086 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 [2022-03-15 15:42:20,086 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-03-15 15:42:20,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:42:20,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1109462170, now seen corresponding path program 10 times [2022-03-15 15:42:20,087 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:42:20,087 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54408712] [2022-03-15 15:42:20,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:42:20,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:42:20,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:42:20,128 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-03-15 15:42:20,129 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:42:20,129 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54408712] [2022-03-15 15:42:20,129 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54408712] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:42:20,129 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [396970058] [2022-03-15 15:42:20,129 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 15:42:20,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:42:20,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:42:20,130 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) [2022-03-15 15:42:20,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-03-15 15:42:20,183 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 15:42:20,183 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:42:20,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-15 15:42:20,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:42:20,267 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-03-15 15:42:20,267 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:42:20,319 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-03-15 15:42:20,319 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [396970058] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:42:20,319 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:42:20,319 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 7 [2022-03-15 15:42:20,320 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023165482] [2022-03-15 15:42:20,320 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:42:20,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-15 15:42:20,321 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:42:20,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-15 15:42:20,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-15 15:42:20,322 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) [2022-03-15 15:42:20,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:42:20,629 INFO L93 Difference]: Finished difference Result 22024 states and 145091 transitions. [2022-03-15 15:42:20,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-15 15:42:20,630 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 [2022-03-15 15:42:20,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:42:20,911 INFO L225 Difference]: With dead ends: 22024 [2022-03-15 15:42:20,912 INFO L226 Difference]: Without dead ends: 17242 [2022-03-15 15:42:20,912 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 [2022-03-15 15:42:20,912 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 [2022-03-15 15:42:20,912 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] [2022-03-15 15:42:20,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17242 states. [2022-03-15 15:42:21,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17242 to 12713. [2022-03-15 15:42:21,399 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) [2022-03-15 15:42:21,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12713 states to 12713 states and 86719 transitions. [2022-03-15 15:42:21,472 INFO L78 Accepts]: Start accepts. Automaton has 12713 states and 86719 transitions. Word has length 30 [2022-03-15 15:42:21,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:42:21,472 INFO L470 AbstractCegarLoop]: Abstraction has 12713 states and 86719 transitions. [2022-03-15 15:42:21,472 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) [2022-03-15 15:42:21,473 INFO L276 IsEmpty]: Start isEmpty. Operand 12713 states and 86719 transitions. [2022-03-15 15:42:21,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-03-15 15:42:21,514 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:42:21,515 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] [2022-03-15 15:42:21,533 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-03-15 15:42:21,727 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 [2022-03-15 15:42:21,728 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-03-15 15:42:21,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:42:21,728 INFO L85 PathProgramCache]: Analyzing trace with hash 465673390, now seen corresponding path program 11 times [2022-03-15 15:42:21,728 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:42:21,728 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950476359] [2022-03-15 15:42:21,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:42:21,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:42:21,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:42:21,769 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-03-15 15:42:21,769 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:42:21,769 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950476359] [2022-03-15 15:42:21,769 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950476359] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:42:21,769 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [991285940] [2022-03-15 15:42:21,769 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 15:42:21,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:42:21,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:42:21,771 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) [2022-03-15 15:42:21,772 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-03-15 15:42:21,806 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-15 15:42:21,806 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:42:21,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-15 15:42:21,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:42:21,885 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-03-15 15:42:21,885 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:42:21,944 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-03-15 15:42:21,945 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [991285940] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:42:21,945 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:42:21,945 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2022-03-15 15:42:21,945 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902246459] [2022-03-15 15:42:21,945 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:42:21,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-15 15:42:21,945 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:42:21,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-15 15:42:21,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-03-15 15:42:21,946 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) [2022-03-15 15:42:22,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:42:22,435 INFO L93 Difference]: Finished difference Result 24284 states and 158204 transitions. [2022-03-15 15:42:22,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-15 15:42:22,435 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 [2022-03-15 15:42:22,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:42:22,514 INFO L225 Difference]: With dead ends: 24284 [2022-03-15 15:42:22,514 INFO L226 Difference]: Without dead ends: 15901 [2022-03-15 15:42:22,515 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 [2022-03-15 15:42:22,515 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 [2022-03-15 15:42:22,516 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] [2022-03-15 15:42:22,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15901 states. [2022-03-15 15:42:22,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15901 to 12713. [2022-03-15 15:42:22,985 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) [2022-03-15 15:42:23,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12713 states to 12713 states and 85587 transitions. [2022-03-15 15:42:23,242 INFO L78 Accepts]: Start accepts. Automaton has 12713 states and 85587 transitions. Word has length 30 [2022-03-15 15:42:23,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:42:23,242 INFO L470 AbstractCegarLoop]: Abstraction has 12713 states and 85587 transitions. [2022-03-15 15:42:23,242 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) [2022-03-15 15:42:23,242 INFO L276 IsEmpty]: Start isEmpty. Operand 12713 states and 85587 transitions. [2022-03-15 15:42:23,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-03-15 15:42:23,282 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:42:23,282 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] [2022-03-15 15:42:23,299 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-03-15 15:42:23,488 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 [2022-03-15 15:42:23,489 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-03-15 15:42:23,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:42:23,489 INFO L85 PathProgramCache]: Analyzing trace with hash -2003086426, now seen corresponding path program 12 times [2022-03-15 15:42:23,489 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:42:23,489 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399318670] [2022-03-15 15:42:23,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:42:23,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:42:23,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:42:23,528 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-03-15 15:42:23,529 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:42:23,529 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399318670] [2022-03-15 15:42:23,529 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399318670] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:42:23,529 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2089979462] [2022-03-15 15:42:23,529 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 15:42:23,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:42:23,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:42:23,531 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) [2022-03-15 15:42:23,541 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-03-15 15:42:23,578 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-15 15:42:23,578 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:42:23,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-15 15:42:23,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:42:23,685 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-03-15 15:42:23,685 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:42:23,732 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-03-15 15:42:23,733 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2089979462] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:42:23,733 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:42:23,733 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 7 [2022-03-15 15:42:23,733 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969105] [2022-03-15 15:42:23,733 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:42:23,734 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-15 15:42:23,734 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:42:23,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-15 15:42:23,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-15 15:42:23,735 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) [2022-03-15 15:42:24,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:42:24,217 INFO L93 Difference]: Finished difference Result 22021 states and 143389 transitions. [2022-03-15 15:42:24,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-15 15:42:24,217 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 [2022-03-15 15:42:24,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:42:24,317 INFO L225 Difference]: With dead ends: 22021 [2022-03-15 15:42:24,318 INFO L226 Difference]: Without dead ends: 15543 [2022-03-15 15:42:24,318 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 [2022-03-15 15:42:24,318 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 52 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 15:42:24,319 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 122 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 15:42:24,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15543 states. [2022-03-15 15:42:24,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15543 to 11581. [2022-03-15 15:42:24,743 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) [2022-03-15 15:42:24,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11581 states to 11581 states and 76411 transitions. [2022-03-15 15:42:24,824 INFO L78 Accepts]: Start accepts. Automaton has 11581 states and 76411 transitions. Word has length 30 [2022-03-15 15:42:24,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:42:24,825 INFO L470 AbstractCegarLoop]: Abstraction has 11581 states and 76411 transitions. [2022-03-15 15:42:24,825 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) [2022-03-15 15:42:24,825 INFO L276 IsEmpty]: Start isEmpty. Operand 11581 states and 76411 transitions. [2022-03-15 15:42:24,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-03-15 15:42:24,865 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:42:24,865 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] [2022-03-15 15:42:24,890 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-03-15 15:42:25,079 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 [2022-03-15 15:42:25,079 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-03-15 15:42:25,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:42:25,080 INFO L85 PathProgramCache]: Analyzing trace with hash 415691786, now seen corresponding path program 13 times [2022-03-15 15:42:25,080 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:42:25,080 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826317703] [2022-03-15 15:42:25,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:42:25,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:42:25,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:42:25,110 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-03-15 15:42:25,110 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:42:25,110 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826317703] [2022-03-15 15:42:25,110 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826317703] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:42:25,110 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [666986581] [2022-03-15 15:42:25,110 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 15:42:25,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:42:25,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:42:25,123 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) [2022-03-15 15:42:25,124 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-03-15 15:42:25,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:42:25,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-15 15:42:25,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:42:25,229 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-03-15 15:42:25,229 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:42:25,282 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-03-15 15:42:25,282 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [666986581] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:42:25,282 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:42:25,282 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 7 [2022-03-15 15:42:25,282 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269569390] [2022-03-15 15:42:25,282 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:42:25,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-15 15:42:25,283 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:42:25,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-15 15:42:25,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-15 15:42:25,283 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) [2022-03-15 15:42:25,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:42:25,685 INFO L93 Difference]: Finished difference Result 18164 states and 118652 transitions. [2022-03-15 15:42:25,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-15 15:42:25,685 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 [2022-03-15 15:42:25,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:42:25,756 INFO L225 Difference]: With dead ends: 18164 [2022-03-15 15:42:25,756 INFO L226 Difference]: Without dead ends: 14769 [2022-03-15 15:42:25,757 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 [2022-03-15 15:42:25,758 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 [2022-03-15 15:42:25,759 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] [2022-03-15 15:42:25,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14769 states. [2022-03-15 15:42:26,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14769 to 11015. [2022-03-15 15:42:26,221 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) [2022-03-15 15:42:26,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11015 states to 11015 states and 72106 transitions. [2022-03-15 15:42:26,287 INFO L78 Accepts]: Start accepts. Automaton has 11015 states and 72106 transitions. Word has length 30 [2022-03-15 15:42:26,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:42:26,287 INFO L470 AbstractCegarLoop]: Abstraction has 11015 states and 72106 transitions. [2022-03-15 15:42:26,287 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) [2022-03-15 15:42:26,287 INFO L276 IsEmpty]: Start isEmpty. Operand 11015 states and 72106 transitions. [2022-03-15 15:42:26,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-03-15 15:42:26,346 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:42:26,346 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] [2022-03-15 15:42:26,362 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-03-15 15:42:26,562 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 [2022-03-15 15:42:26,562 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-03-15 15:42:26,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:42:26,563 INFO L85 PathProgramCache]: Analyzing trace with hash 477731400, now seen corresponding path program 14 times [2022-03-15 15:42:26,563 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:42:26,563 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326807052] [2022-03-15 15:42:26,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:42:26,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:42:26,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:42:26,588 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-03-15 15:42:26,589 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:42:26,589 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326807052] [2022-03-15 15:42:26,589 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326807052] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:42:26,589 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1613458082] [2022-03-15 15:42:26,589 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 15:42:26,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:42:26,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:42:26,600 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) [2022-03-15 15:42:26,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-03-15 15:42:26,634 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 15:42:26,634 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:42:26,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-15 15:42:26,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:42:26,738 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-03-15 15:42:26,739 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:42:26,803 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-03-15 15:42:26,803 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1613458082] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:42:26,803 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:42:26,803 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2022-03-15 15:42:26,803 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798542267] [2022-03-15 15:42:26,803 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:42:26,803 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-15 15:42:26,804 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:42:26,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-15 15:42:26,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-03-15 15:42:26,804 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) [2022-03-15 15:42:27,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:42:27,227 INFO L93 Difference]: Finished difference Result 16004 states and 104321 transitions. [2022-03-15 15:42:27,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-15 15:42:27,227 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 [2022-03-15 15:42:27,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:42:27,289 INFO L225 Difference]: With dead ends: 16004 [2022-03-15 15:42:27,289 INFO L226 Difference]: Without dead ends: 13279 [2022-03-15 15:42:27,289 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 [2022-03-15 15:42:27,289 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 [2022-03-15 15:42:27,290 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] [2022-03-15 15:42:27,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13279 states. [2022-03-15 15:42:27,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13279 to 12147. [2022-03-15 15:42:27,643 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) [2022-03-15 15:42:27,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12147 states to 12147 states and 79584 transitions. [2022-03-15 15:42:27,710 INFO L78 Accepts]: Start accepts. Automaton has 12147 states and 79584 transitions. Word has length 30 [2022-03-15 15:42:27,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:42:27,710 INFO L470 AbstractCegarLoop]: Abstraction has 12147 states and 79584 transitions. [2022-03-15 15:42:27,710 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) [2022-03-15 15:42:27,710 INFO L276 IsEmpty]: Start isEmpty. Operand 12147 states and 79584 transitions. [2022-03-15 15:42:27,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-03-15 15:42:27,751 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:42:27,751 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] [2022-03-15 15:42:27,781 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-03-15 15:42:27,966 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 [2022-03-15 15:42:27,966 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-03-15 15:42:27,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:42:27,966 INFO L85 PathProgramCache]: Analyzing trace with hash 2135980253, now seen corresponding path program 15 times [2022-03-15 15:42:27,966 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:42:27,966 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594930305] [2022-03-15 15:42:27,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:42:27,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:42:27,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:42:28,005 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-03-15 15:42:28,006 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:42:28,006 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594930305] [2022-03-15 15:42:28,006 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594930305] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:42:28,006 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1159846022] [2022-03-15 15:42:28,006 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 15:42:28,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:42:28,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:42:28,007 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) [2022-03-15 15:42:28,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-03-15 15:42:28,063 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-15 15:42:28,063 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:42:28,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-15 15:42:28,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:42:28,262 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-03-15 15:42:28,262 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:42:28,336 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-03-15 15:42:28,337 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1159846022] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:42:28,337 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:42:28,337 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 9 [2022-03-15 15:42:28,337 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024541617] [2022-03-15 15:42:28,337 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:42:28,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-15 15:42:28,338 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:42:28,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-15 15:42:28,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-03-15 15:42:28,338 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) [2022-03-15 15:42:29,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:42:29,784 INFO L93 Difference]: Finished difference Result 42090 states and 268739 transitions. [2022-03-15 15:42:29,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-03-15 15:42:29,784 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 [2022-03-15 15:42:29,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:42:30,117 INFO L225 Difference]: With dead ends: 42090 [2022-03-15 15:42:30,117 INFO L226 Difference]: Without dead ends: 38810 [2022-03-15 15:42:30,118 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 55 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=509, Unknown=0, NotChecked=0, Total=600 [2022-03-15 15:42:30,120 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, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 15:42:30,120 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [166 Valid, 665 Invalid, 1304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1288 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 15:42:30,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38810 states. [2022-03-15 15:42:31,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38810 to 24247. [2022-03-15 15:42:31,282 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) [2022-03-15 15:42:31,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24247 states to 24247 states and 167626 transitions. [2022-03-15 15:42:31,428 INFO L78 Accepts]: Start accepts. Automaton has 24247 states and 167626 transitions. Word has length 31 [2022-03-15 15:42:31,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:42:31,428 INFO L470 AbstractCegarLoop]: Abstraction has 24247 states and 167626 transitions. [2022-03-15 15:42:31,428 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) [2022-03-15 15:42:31,428 INFO L276 IsEmpty]: Start isEmpty. Operand 24247 states and 167626 transitions. [2022-03-15 15:42:31,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-03-15 15:42:31,507 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:42:31,507 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] [2022-03-15 15:42:31,523 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2022-03-15 15:42:31,707 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 [2022-03-15 15:42:31,708 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-03-15 15:42:31,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:42:31,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1628666418, now seen corresponding path program 16 times [2022-03-15 15:42:31,708 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:42:31,708 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772111495] [2022-03-15 15:42:31,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:42:31,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:42:31,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:42:31,753 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-03-15 15:42:31,753 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:42:31,753 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772111495] [2022-03-15 15:42:31,753 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772111495] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:42:31,753 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110262224] [2022-03-15 15:42:31,753 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 15:42:31,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:42:31,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:42:31,755 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) [2022-03-15 15:42:31,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-03-15 15:42:31,787 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 15:42:31,787 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:42:31,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-15 15:42:31,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:42:32,064 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-03-15 15:42:32,064 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:42:32,136 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-03-15 15:42:32,136 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [110262224] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:42:32,136 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:42:32,136 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 5] total 9 [2022-03-15 15:42:32,137 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179393397] [2022-03-15 15:42:32,138 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:42:32,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-15 15:42:32,138 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:42:32,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-15 15:42:32,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-03-15 15:42:32,138 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) [2022-03-15 15:42:32,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:42:32,605 INFO L93 Difference]: Finished difference Result 33951 states and 226852 transitions. [2022-03-15 15:42:32,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-15 15:42:32,605 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 [2022-03-15 15:42:32,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:42:32,928 INFO L225 Difference]: With dead ends: 33951 [2022-03-15 15:42:32,929 INFO L226 Difference]: Without dead ends: 31017 [2022-03-15 15:42:32,929 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 55 SyntacticMatches, 6 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-03-15 15:42:32,929 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 [2022-03-15 15:42:32,930 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] [2022-03-15 15:42:32,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31017 states. [2022-03-15 15:42:33,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31017 to 23869. [2022-03-15 15:42:33,711 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) [2022-03-15 15:42:34,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23869 states to 23869 states and 163622 transitions. [2022-03-15 15:42:34,056 INFO L78 Accepts]: Start accepts. Automaton has 23869 states and 163622 transitions. Word has length 32 [2022-03-15 15:42:34,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:42:34,056 INFO L470 AbstractCegarLoop]: Abstraction has 23869 states and 163622 transitions. [2022-03-15 15:42:34,056 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) [2022-03-15 15:42:34,056 INFO L276 IsEmpty]: Start isEmpty. Operand 23869 states and 163622 transitions. [2022-03-15 15:42:34,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-03-15 15:42:34,126 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:42:34,126 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] [2022-03-15 15:42:34,144 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2022-03-15 15:42:34,341 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 [2022-03-15 15:42:34,342 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-03-15 15:42:34,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:42:34,342 INFO L85 PathProgramCache]: Analyzing trace with hash 620042656, now seen corresponding path program 17 times [2022-03-15 15:42:34,342 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:42:34,342 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382537810] [2022-03-15 15:42:34,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:42:34,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:42:34,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:42:34,387 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-03-15 15:42:34,387 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:42:34,387 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382537810] [2022-03-15 15:42:34,387 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382537810] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:42:34,387 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1098188122] [2022-03-15 15:42:34,388 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 15:42:34,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:42:34,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:42:34,389 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) [2022-03-15 15:42:34,390 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-03-15 15:42:34,423 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-15 15:42:34,423 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:42:34,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-15 15:42:34,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:42:34,531 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-03-15 15:42:34,531 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:42:34,594 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-03-15 15:42:34,594 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1098188122] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:42:34,594 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:42:34,594 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-03-15 15:42:34,594 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200064562] [2022-03-15 15:42:34,595 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:42:34,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-15 15:42:34,595 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:42:34,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-15 15:42:34,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-03-15 15:42:34,595 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) [2022-03-15 15:42:35,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:42:35,433 INFO L93 Difference]: Finished difference Result 35105 states and 233275 transitions. [2022-03-15 15:42:35,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-15 15:42:35,433 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 [2022-03-15 15:42:35,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:42:35,596 INFO L225 Difference]: With dead ends: 35105 [2022-03-15 15:42:35,596 INFO L226 Difference]: Without dead ends: 27952 [2022-03-15 15:42:35,596 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 [2022-03-15 15:42:35,597 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 [2022-03-15 15:42:35,597 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] [2022-03-15 15:42:35,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27952 states. [2022-03-15 15:42:36,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27952 to 21827. [2022-03-15 15:42:36,402 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) [2022-03-15 15:42:36,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21827 states to 21827 states and 148361 transitions. [2022-03-15 15:42:36,779 INFO L78 Accepts]: Start accepts. Automaton has 21827 states and 148361 transitions. Word has length 32 [2022-03-15 15:42:36,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:42:36,782 INFO L470 AbstractCegarLoop]: Abstraction has 21827 states and 148361 transitions. [2022-03-15 15:42:36,782 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) [2022-03-15 15:42:36,782 INFO L276 IsEmpty]: Start isEmpty. Operand 21827 states and 148361 transitions. [2022-03-15 15:42:36,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-03-15 15:42:36,855 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:42:36,855 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] [2022-03-15 15:42:36,871 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-03-15 15:42:37,071 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 [2022-03-15 15:42:37,071 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-03-15 15:42:37,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:42:37,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1356406896, now seen corresponding path program 18 times [2022-03-15 15:42:37,072 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:42:37,072 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496325099] [2022-03-15 15:42:37,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:42:37,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:42:37,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:42:37,108 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-03-15 15:42:37,108 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:42:37,108 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496325099] [2022-03-15 15:42:37,108 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496325099] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:42:37,108 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [939814784] [2022-03-15 15:42:37,108 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 15:42:37,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:42:37,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:42:37,109 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) [2022-03-15 15:42:37,110 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-03-15 15:42:37,142 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-15 15:42:37,143 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:42:37,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-15 15:42:37,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:42:37,251 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-03-15 15:42:37,251 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:42:37,313 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-15 15:42:37,313 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [939814784] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:42:37,313 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:42:37,313 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 5] total 10 [2022-03-15 15:42:37,314 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350845196] [2022-03-15 15:42:37,314 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:42:37,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-15 15:42:37,314 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:42:37,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-15 15:42:37,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-03-15 15:42:37,314 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) [2022-03-15 15:42:38,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:42:38,096 INFO L93 Difference]: Finished difference Result 39186 states and 256137 transitions. [2022-03-15 15:42:38,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-15 15:42:38,097 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 [2022-03-15 15:42:38,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:42:38,262 INFO L225 Difference]: With dead ends: 39186 [2022-03-15 15:42:38,262 INFO L226 Difference]: Without dead ends: 33561 [2022-03-15 15:42:38,262 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 [2022-03-15 15:42:38,262 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 [2022-03-15 15:42:38,263 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] [2022-03-15 15:42:38,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33561 states. [2022-03-15 15:42:38,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33561 to 21317. [2022-03-15 15:42:39,012 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) [2022-03-15 15:42:39,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21317 states to 21317 states and 142506 transitions. [2022-03-15 15:42:39,386 INFO L78 Accepts]: Start accepts. Automaton has 21317 states and 142506 transitions. Word has length 32 [2022-03-15 15:42:39,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:42:39,386 INFO L470 AbstractCegarLoop]: Abstraction has 21317 states and 142506 transitions. [2022-03-15 15:42:39,387 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) [2022-03-15 15:42:39,387 INFO L276 IsEmpty]: Start isEmpty. Operand 21317 states and 142506 transitions. [2022-03-15 15:42:39,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-03-15 15:42:39,482 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:42:39,482 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] [2022-03-15 15:42:39,507 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-03-15 15:42:39,699 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 [2022-03-15 15:42:39,699 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-03-15 15:42:39,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:42:39,700 INFO L85 PathProgramCache]: Analyzing trace with hash -2037058060, now seen corresponding path program 19 times [2022-03-15 15:42:39,700 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:42:39,700 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379947629] [2022-03-15 15:42:39,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:42:39,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:42:39,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:42:39,738 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-03-15 15:42:39,738 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:42:39,739 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379947629] [2022-03-15 15:42:39,739 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379947629] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:42:39,739 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2118982626] [2022-03-15 15:42:39,739 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 15:42:39,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:42:39,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:42:39,741 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) [2022-03-15 15:42:39,742 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-03-15 15:42:39,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:42:39,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-15 15:42:39,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:42:39,942 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-03-15 15:42:39,942 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:42:40,011 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-03-15 15:42:40,012 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2118982626] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:42:40,012 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:42:40,012 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 5] total 10 [2022-03-15 15:42:40,012 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30301674] [2022-03-15 15:42:40,012 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:42:40,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-15 15:42:40,012 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:42:40,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-15 15:42:40,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-03-15 15:42:40,013 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) [2022-03-15 15:42:40,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:42:40,876 INFO L93 Difference]: Finished difference Result 35611 states and 232490 transitions. [2022-03-15 15:42:40,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-15 15:42:40,877 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 [2022-03-15 15:42:40,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:42:41,053 INFO L225 Difference]: With dead ends: 35611 [2022-03-15 15:42:41,054 INFO L226 Difference]: Without dead ends: 28971 [2022-03-15 15:42:41,054 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 [2022-03-15 15:42:41,054 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 [2022-03-15 15:42:41,056 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] [2022-03-15 15:42:41,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28971 states. [2022-03-15 15:42:41,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28971 to 20296. [2022-03-15 15:42:41,711 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) [2022-03-15 15:42:41,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20296 states to 20296 states and 134366 transitions. [2022-03-15 15:42:41,818 INFO L78 Accepts]: Start accepts. Automaton has 20296 states and 134366 transitions. Word has length 32 [2022-03-15 15:42:41,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:42:41,819 INFO L470 AbstractCegarLoop]: Abstraction has 20296 states and 134366 transitions. [2022-03-15 15:42:41,819 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) [2022-03-15 15:42:41,819 INFO L276 IsEmpty]: Start isEmpty. Operand 20296 states and 134366 transitions. [2022-03-15 15:42:42,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-03-15 15:42:42,063 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:42:42,063 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] [2022-03-15 15:42:42,080 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-03-15 15:42:42,279 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 [2022-03-15 15:42:42,279 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-03-15 15:42:42,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:42:42,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1246791986, now seen corresponding path program 20 times [2022-03-15 15:42:42,280 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:42:42,280 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725320488] [2022-03-15 15:42:42,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:42:42,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:42:42,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:42:42,319 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-03-15 15:42:42,319 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:42:42,319 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725320488] [2022-03-15 15:42:42,319 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725320488] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:42:42,319 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586485958] [2022-03-15 15:42:42,319 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 15:42:42,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:42:42,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:42:42,321 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) [2022-03-15 15:42:42,321 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-03-15 15:42:42,352 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 15:42:42,352 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:42:42,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-15 15:42:42,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:42:42,459 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-03-15 15:42:42,459 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:42:42,524 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-03-15 15:42:42,525 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1586485958] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:42:42,525 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:42:42,525 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 11 [2022-03-15 15:42:42,525 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706093258] [2022-03-15 15:42:42,525 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:42:42,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-15 15:42:42,525 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:42:42,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-15 15:42:42,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-03-15 15:42:42,526 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) [2022-03-15 15:42:43,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:42:43,061 INFO L93 Difference]: Finished difference Result 30499 states and 199941 transitions. [2022-03-15 15:42:43,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-15 15:42:43,062 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 [2022-03-15 15:42:43,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:42:43,379 INFO L225 Difference]: With dead ends: 30499 [2022-03-15 15:42:43,379 INFO L226 Difference]: Without dead ends: 29476 [2022-03-15 15:42:43,379 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 [2022-03-15 15:42:43,380 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, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 15:42:43,380 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 303 Invalid, 720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 716 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 15:42:43,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29476 states. [2022-03-15 15:42:44,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29476 to 20296. [2022-03-15 15:42:44,062 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) [2022-03-15 15:42:44,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20296 states to 20296 states and 134366 transitions. [2022-03-15 15:42:44,179 INFO L78 Accepts]: Start accepts. Automaton has 20296 states and 134366 transitions. Word has length 32 [2022-03-15 15:42:44,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:42:44,179 INFO L470 AbstractCegarLoop]: Abstraction has 20296 states and 134366 transitions. [2022-03-15 15:42:44,180 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) [2022-03-15 15:42:44,180 INFO L276 IsEmpty]: Start isEmpty. Operand 20296 states and 134366 transitions. [2022-03-15 15:42:44,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-03-15 15:42:44,242 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:42:44,242 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] [2022-03-15 15:42:44,259 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-03-15 15:42:44,443 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 [2022-03-15 15:42:44,444 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-03-15 15:42:44,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:42:44,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1883991200, now seen corresponding path program 21 times [2022-03-15 15:42:44,444 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:42:44,444 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911153097] [2022-03-15 15:42:44,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:42:44,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:42:44,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:42:44,482 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-03-15 15:42:44,483 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:42:44,483 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911153097] [2022-03-15 15:42:44,483 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911153097] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:42:44,483 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1891913504] [2022-03-15 15:42:44,483 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 15:42:44,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:42:44,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:42:44,484 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) [2022-03-15 15:42:44,485 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-03-15 15:42:44,516 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-15 15:42:44,516 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:42:44,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-15 15:42:44,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:42:44,729 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-03-15 15:42:44,729 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:42:44,793 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-03-15 15:42:44,793 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1891913504] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:42:44,793 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:42:44,793 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 4] total 13 [2022-03-15 15:42:44,793 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936632338] [2022-03-15 15:42:44,793 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:42:44,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-15 15:42:44,793 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:42:44,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-15 15:42:44,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-03-15 15:42:44,794 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) [2022-03-15 15:42:46,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:42:46,915 INFO L93 Difference]: Finished difference Result 55689 states and 355451 transitions. [2022-03-15 15:42:46,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-03-15 15:42:46,916 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 [2022-03-15 15:42:46,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:42:47,254 INFO L225 Difference]: With dead ends: 55689 [2022-03-15 15:42:47,254 INFO L226 Difference]: Without dead ends: 48821 [2022-03-15 15:42:47,255 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 [2022-03-15 15:42:47,256 INFO L933 BasicCegarLoop]: 103 mSDtfsCounter, 550 mSDsluCounter, 1992 mSDsCounter, 0 mSdLazyCounter, 2478 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s 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, 1.0s IncrementalHoareTripleChecker+Time [2022-03-15 15:42:47,256 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [550 Valid, 1036 Invalid, 2588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 2478 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-15 15:42:47,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48821 states. [2022-03-15 15:42:48,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48821 to 23776. [2022-03-15 15:42:48,397 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) [2022-03-15 15:42:48,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23776 states to 23776 states and 161296 transitions. [2022-03-15 15:42:48,520 INFO L78 Accepts]: Start accepts. Automaton has 23776 states and 161296 transitions. Word has length 32 [2022-03-15 15:42:48,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:42:48,520 INFO L470 AbstractCegarLoop]: Abstraction has 23776 states and 161296 transitions. [2022-03-15 15:42:48,520 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) [2022-03-15 15:42:48,520 INFO L276 IsEmpty]: Start isEmpty. Operand 23776 states and 161296 transitions. [2022-03-15 15:42:48,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-03-15 15:42:48,585 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:42:48,585 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] [2022-03-15 15:42:48,602 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-03-15 15:42:48,801 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 [2022-03-15 15:42:48,801 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-03-15 15:42:48,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:42:48,801 INFO L85 PathProgramCache]: Analyzing trace with hash -424911306, now seen corresponding path program 22 times [2022-03-15 15:42:48,801 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:42:48,801 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962425126] [2022-03-15 15:42:48,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:42:48,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:42:48,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:42:48,838 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-03-15 15:42:48,838 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:42:48,838 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962425126] [2022-03-15 15:42:48,838 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962425126] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:42:48,838 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [454069387] [2022-03-15 15:42:48,838 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 15:42:48,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:42:48,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:42:48,840 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) [2022-03-15 15:42:48,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-03-15 15:42:48,871 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 15:42:48,871 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:42:48,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-15 15:42:48,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:42:48,965 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-03-15 15:42:48,965 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:42:49,037 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-03-15 15:42:49,037 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [454069387] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:42:49,038 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:42:49,038 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 5] total 9 [2022-03-15 15:42:49,038 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156827675] [2022-03-15 15:42:49,038 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:42:49,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-15 15:42:49,038 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:42:49,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-15 15:42:49,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-03-15 15:42:49,039 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) [2022-03-15 15:42:49,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:42:49,796 INFO L93 Difference]: Finished difference Result 36270 states and 239993 transitions. [2022-03-15 15:42:49,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-15 15:42:49,797 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 [2022-03-15 15:42:49,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:42:49,953 INFO L225 Difference]: With dead ends: 36270 [2022-03-15 15:42:49,953 INFO L226 Difference]: Without dead ends: 32102 [2022-03-15 15:42:49,954 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 [2022-03-15 15:42:49,954 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 [2022-03-15 15:42:49,955 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] [2022-03-15 15:42:49,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32102 states. [2022-03-15 15:42:50,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32102 to 23776. [2022-03-15 15:42:50,815 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) [2022-03-15 15:42:51,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23776 states to 23776 states and 160702 transitions. [2022-03-15 15:42:51,162 INFO L78 Accepts]: Start accepts. Automaton has 23776 states and 160702 transitions. Word has length 32 [2022-03-15 15:42:51,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:42:51,163 INFO L470 AbstractCegarLoop]: Abstraction has 23776 states and 160702 transitions. [2022-03-15 15:42:51,163 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) [2022-03-15 15:42:51,163 INFO L276 IsEmpty]: Start isEmpty. Operand 23776 states and 160702 transitions. [2022-03-15 15:42:51,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-03-15 15:42:51,240 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:42:51,240 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] [2022-03-15 15:42:51,256 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-03-15 15:42:51,456 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 [2022-03-15 15:42:51,456 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-03-15 15:42:51,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:42:51,456 INFO L85 PathProgramCache]: Analyzing trace with hash -1105562470, now seen corresponding path program 23 times [2022-03-15 15:42:51,457 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:42:51,457 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479218698] [2022-03-15 15:42:51,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:42:51,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:42:51,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:42:51,485 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-03-15 15:42:51,485 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:42:51,485 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479218698] [2022-03-15 15:42:51,485 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479218698] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:42:51,485 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1604162133] [2022-03-15 15:42:51,485 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 15:42:51,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:42:51,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:42:51,486 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) [2022-03-15 15:42:51,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-03-15 15:42:51,519 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-03-15 15:42:51,519 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:42:51,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-15 15:42:51,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:42:51,612 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-03-15 15:42:51,613 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:42:51,685 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-03-15 15:42:51,685 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1604162133] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:42:51,686 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:42:51,686 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 5] total 9 [2022-03-15 15:42:51,686 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389094618] [2022-03-15 15:42:51,686 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:42:51,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-15 15:42:51,686 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:42:51,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-15 15:42:51,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-03-15 15:42:51,687 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) [2022-03-15 15:42:52,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:42:52,341 INFO L93 Difference]: Finished difference Result 33889 states and 224209 transitions. [2022-03-15 15:42:52,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-15 15:42:52,343 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 [2022-03-15 15:42:52,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:42:52,528 INFO L225 Difference]: With dead ends: 33889 [2022-03-15 15:42:52,528 INFO L226 Difference]: Without dead ends: 30917 [2022-03-15 15:42:52,528 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 [2022-03-15 15:42:52,528 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 [2022-03-15 15:42:52,529 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] [2022-03-15 15:42:52,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30917 states. [2022-03-15 15:42:53,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30917 to 23182. [2022-03-15 15:42:53,281 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) [2022-03-15 15:42:53,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23182 states to 23182 states and 154976 transitions. [2022-03-15 15:42:53,404 INFO L78 Accepts]: Start accepts. Automaton has 23182 states and 154976 transitions. Word has length 32 [2022-03-15 15:42:53,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:42:53,404 INFO L470 AbstractCegarLoop]: Abstraction has 23182 states and 154976 transitions. [2022-03-15 15:42:53,404 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) [2022-03-15 15:42:53,404 INFO L276 IsEmpty]: Start isEmpty. Operand 23182 states and 154976 transitions. [2022-03-15 15:42:53,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-03-15 15:42:53,693 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:42:53,693 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] [2022-03-15 15:42:53,709 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2022-03-15 15:42:53,909 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 [2022-03-15 15:42:53,909 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-03-15 15:42:53,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:42:53,910 INFO L85 PathProgramCache]: Analyzing trace with hash -2116679720, now seen corresponding path program 24 times [2022-03-15 15:42:53,910 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:42:53,910 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176570142] [2022-03-15 15:42:53,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:42:53,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:42:53,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:42:53,945 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-03-15 15:42:53,945 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:42:53,945 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176570142] [2022-03-15 15:42:53,945 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176570142] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:42:53,945 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1320740998] [2022-03-15 15:42:53,946 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 15:42:53,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:42:53,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:42:53,947 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) [2022-03-15 15:42:53,953 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-03-15 15:42:53,991 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-15 15:42:53,991 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:42:53,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-15 15:42:53,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:42:54,130 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-03-15 15:42:54,130 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:42:54,212 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-03-15 15:42:54,212 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1320740998] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:42:54,212 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:42:54,213 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 6] total 10 [2022-03-15 15:42:54,213 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420141348] [2022-03-15 15:42:54,213 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:42:54,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-15 15:42:54,213 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:42:54,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-15 15:42:54,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-03-15 15:42:54,213 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) [2022-03-15 15:42:55,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:42:55,325 INFO L93 Difference]: Finished difference Result 46372 states and 305862 transitions. [2022-03-15 15:42:55,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-15 15:42:55,325 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 [2022-03-15 15:42:55,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:42:55,552 INFO L225 Difference]: With dead ends: 46372 [2022-03-15 15:42:55,552 INFO L226 Difference]: Without dead ends: 33280 [2022-03-15 15:42:55,552 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 [2022-03-15 15:42:55,553 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 174 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 646 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 15:42:55,553 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [174 Valid, 280 Invalid, 655 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 646 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 15:42:55,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33280 states. [2022-03-15 15:42:56,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33280 to 19618. [2022-03-15 15:42:56,335 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) [2022-03-15 15:42:56,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19618 states to 19618 states and 129530 transitions. [2022-03-15 15:42:56,437 INFO L78 Accepts]: Start accepts. Automaton has 19618 states and 129530 transitions. Word has length 32 [2022-03-15 15:42:56,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:42:56,437 INFO L470 AbstractCegarLoop]: Abstraction has 19618 states and 129530 transitions. [2022-03-15 15:42:56,437 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) [2022-03-15 15:42:56,437 INFO L276 IsEmpty]: Start isEmpty. Operand 19618 states and 129530 transitions. [2022-03-15 15:42:56,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-03-15 15:42:56,488 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:42:56,488 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] [2022-03-15 15:42:56,504 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2022-03-15 15:42:56,703 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 [2022-03-15 15:42:56,704 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-03-15 15:42:56,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:42:56,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1909541148, now seen corresponding path program 25 times [2022-03-15 15:42:56,704 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:42:56,704 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017450867] [2022-03-15 15:42:56,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:42:56,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:42:56,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:42:56,738 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-03-15 15:42:56,738 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:42:56,738 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017450867] [2022-03-15 15:42:56,738 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017450867] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:42:56,738 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [148787184] [2022-03-15 15:42:56,738 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 15:42:56,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:42:56,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:42:56,740 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) [2022-03-15 15:42:56,740 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-03-15 15:42:56,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:42:56,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-15 15:42:56,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:42:56,869 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-03-15 15:42:56,869 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:42:56,929 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-03-15 15:42:56,929 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [148787184] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:42:56,929 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:42:56,929 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-03-15 15:42:56,929 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039611046] [2022-03-15 15:42:56,930 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:42:56,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-15 15:42:56,930 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:42:56,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-15 15:42:56,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-03-15 15:42:56,930 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) [2022-03-15 15:42:57,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:42:57,518 INFO L93 Difference]: Finished difference Result 24373 states and 161087 transitions. [2022-03-15 15:42:57,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-15 15:42:57,518 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 [2022-03-15 15:42:57,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:42:57,618 INFO L225 Difference]: With dead ends: 24373 [2022-03-15 15:42:57,618 INFO L226 Difference]: Without dead ends: 23182 [2022-03-15 15:42:57,619 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 [2022-03-15 15:42:57,619 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 [2022-03-15 15:42:57,619 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] [2022-03-15 15:42:57,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23182 states. [2022-03-15 15:42:58,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23182 to 20806. [2022-03-15 15:42:58,229 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) [2022-03-15 15:42:58,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20806 states to 20806 states and 137418 transitions. [2022-03-15 15:42:58,335 INFO L78 Accepts]: Start accepts. Automaton has 20806 states and 137418 transitions. Word has length 32 [2022-03-15 15:42:58,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:42:58,335 INFO L470 AbstractCegarLoop]: Abstraction has 20806 states and 137418 transitions. [2022-03-15 15:42:58,335 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) [2022-03-15 15:42:58,335 INFO L276 IsEmpty]: Start isEmpty. Operand 20806 states and 137418 transitions. [2022-03-15 15:42:58,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-03-15 15:42:58,581 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:42:58,581 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] [2022-03-15 15:42:58,616 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-03-15 15:42:58,791 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 [2022-03-15 15:42:58,791 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-03-15 15:42:58,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:42:58,792 INFO L85 PathProgramCache]: Analyzing trace with hash -2113015867, now seen corresponding path program 26 times [2022-03-15 15:42:58,792 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:42:58,792 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979217799] [2022-03-15 15:42:58,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:42:58,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:42:58,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:42:58,852 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-03-15 15:42:58,852 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:42:58,852 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979217799] [2022-03-15 15:42:58,852 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979217799] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:42:58,853 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2120141429] [2022-03-15 15:42:58,853 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 15:42:58,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:42:58,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:42:58,857 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) [2022-03-15 15:42:58,888 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-03-15 15:42:58,897 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 15:42:58,897 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:42:58,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 15 conjunts are in the unsatisfiable core [2022-03-15 15:42:58,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:42:59,208 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-03-15 15:42:59,208 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:42:59,260 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-03-15 15:42:59,261 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2120141429] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:42:59,261 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:42:59,261 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 5] total 8 [2022-03-15 15:42:59,261 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667527953] [2022-03-15 15:42:59,261 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:42:59,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-15 15:42:59,261 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:42:59,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-15 15:42:59,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-03-15 15:42:59,262 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) [2022-03-15 15:42:59,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:42:59,989 INFO L93 Difference]: Finished difference Result 38386 states and 254116 transitions. [2022-03-15 15:42:59,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-15 15:42:59,989 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 [2022-03-15 15:42:59,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:43:00,200 INFO L225 Difference]: With dead ends: 38386 [2022-03-15 15:43:00,200 INFO L226 Difference]: Without dead ends: 37790 [2022-03-15 15:43:00,200 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 55 SyntacticMatches, 10 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-03-15 15:43:00,200 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 [2022-03-15 15:43:00,201 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] [2022-03-15 15:43:00,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37790 states. [2022-03-15 15:43:01,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37790 to 31835. [2022-03-15 15:43:01,094 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) [2022-03-15 15:43:01,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31835 states to 31835 states and 216651 transitions. [2022-03-15 15:43:01,490 INFO L78 Accepts]: Start accepts. Automaton has 31835 states and 216651 transitions. Word has length 33 [2022-03-15 15:43:01,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:43:01,491 INFO L470 AbstractCegarLoop]: Abstraction has 31835 states and 216651 transitions. [2022-03-15 15:43:01,491 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) [2022-03-15 15:43:01,491 INFO L276 IsEmpty]: Start isEmpty. Operand 31835 states and 216651 transitions. [2022-03-15 15:43:01,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-03-15 15:43:01,589 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:43:01,589 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] [2022-03-15 15:43:01,605 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2022-03-15 15:43:01,805 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 [2022-03-15 15:43:01,805 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-03-15 15:43:01,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:43:01,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1800076997, now seen corresponding path program 27 times [2022-03-15 15:43:01,805 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:43:01,806 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467461520] [2022-03-15 15:43:01,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:43:01,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:43:01,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:43:01,857 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-15 15:43:01,857 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:43:01,857 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467461520] [2022-03-15 15:43:01,857 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467461520] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:43:01,857 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1704010821] [2022-03-15 15:43:01,857 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 15:43:01,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:43:01,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:43:01,879 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) [2022-03-15 15:43:01,928 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-03-15 15:43:01,933 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-15 15:43:01,933 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:43:01,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-15 15:43:01,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:43:02,099 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-03-15 15:43:02,100 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:43:02,154 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-03-15 15:43:02,155 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1704010821] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:43:02,155 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:43:02,155 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 4] total 10 [2022-03-15 15:43:02,155 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592901363] [2022-03-15 15:43:02,155 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:43:02,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-15 15:43:02,155 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:43:02,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-15 15:43:02,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-03-15 15:43:02,155 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) [2022-03-15 15:43:04,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:43:04,318 INFO L93 Difference]: Finished difference Result 76452 states and 499137 transitions. [2022-03-15 15:43:04,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-03-15 15:43:04,318 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 [2022-03-15 15:43:04,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:43:04,800 INFO L225 Difference]: With dead ends: 76452 [2022-03-15 15:43:04,800 INFO L226 Difference]: Without dead ends: 71950 [2022-03-15 15:43:04,801 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 [2022-03-15 15:43:04,804 INFO L933 BasicCegarLoop]: 132 mSDtfsCounter, 257 mSDsluCounter, 1943 mSDsCounter, 0 mSdLazyCounter, 1948 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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, 0.8s IncrementalHoareTripleChecker+Time [2022-03-15 15:43:04,804 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [257 Valid, 1029 Invalid, 1983 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1948 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-15 15:43:04,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71950 states. [2022-03-15 15:43:06,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71950 to 45299. [2022-03-15 15:43:06,964 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) [2022-03-15 15:43:07,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45299 states to 45299 states and 319130 transitions. [2022-03-15 15:43:07,229 INFO L78 Accepts]: Start accepts. Automaton has 45299 states and 319130 transitions. Word has length 33 [2022-03-15 15:43:07,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:43:07,230 INFO L470 AbstractCegarLoop]: Abstraction has 45299 states and 319130 transitions. [2022-03-15 15:43:07,230 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) [2022-03-15 15:43:07,230 INFO L276 IsEmpty]: Start isEmpty. Operand 45299 states and 319130 transitions. [2022-03-15 15:43:07,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-03-15 15:43:07,756 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:43:07,756 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] [2022-03-15 15:43:07,772 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-03-15 15:43:07,971 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 [2022-03-15 15:43:07,971 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-03-15 15:43:07,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:43:07,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1235120450, now seen corresponding path program 28 times [2022-03-15 15:43:07,972 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:43:07,972 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628236539] [2022-03-15 15:43:07,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:43:07,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:43:07,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:43:08,007 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-03-15 15:43:08,007 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:43:08,007 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628236539] [2022-03-15 15:43:08,008 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628236539] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:43:08,008 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1306760740] [2022-03-15 15:43:08,008 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 15:43:08,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:43:08,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:43:08,009 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) [2022-03-15 15:43:08,010 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-03-15 15:43:08,040 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 15:43:08,040 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:43:08,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-15 15:43:08,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:43:08,137 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-03-15 15:43:08,137 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:43:08,205 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-03-15 15:43:08,205 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1306760740] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:43:08,205 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:43:08,206 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 5] total 9 [2022-03-15 15:43:08,206 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035597439] [2022-03-15 15:43:08,206 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:43:08,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-15 15:43:08,206 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:43:08,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-15 15:43:08,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-03-15 15:43:08,206 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) [2022-03-15 15:43:09,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:43:09,336 INFO L93 Difference]: Finished difference Result 71328 states and 479587 transitions. [2022-03-15 15:43:09,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-15 15:43:09,336 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 [2022-03-15 15:43:09,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:43:09,817 INFO L225 Difference]: With dead ends: 71328 [2022-03-15 15:43:09,817 INFO L226 Difference]: Without dead ends: 61764 [2022-03-15 15:43:09,817 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 [2022-03-15 15:43:09,818 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 [2022-03-15 15:43:09,818 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] [2022-03-15 15:43:10,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61764 states. [2022-03-15 15:43:11,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61764 to 45298. [2022-03-15 15:43:11,708 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) [2022-03-15 15:43:11,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45298 states to 45298 states and 316422 transitions. [2022-03-15 15:43:11,985 INFO L78 Accepts]: Start accepts. Automaton has 45298 states and 316422 transitions. Word has length 34 [2022-03-15 15:43:11,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:43:11,985 INFO L470 AbstractCegarLoop]: Abstraction has 45298 states and 316422 transitions. [2022-03-15 15:43:11,985 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) [2022-03-15 15:43:11,985 INFO L276 IsEmpty]: Start isEmpty. Operand 45298 states and 316422 transitions. [2022-03-15 15:43:12,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-03-15 15:43:12,453 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:43:12,453 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] [2022-03-15 15:43:12,476 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-03-15 15:43:12,668 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 [2022-03-15 15:43:12,670 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-03-15 15:43:12,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:43:12,670 INFO L85 PathProgramCache]: Analyzing trace with hash 1110638710, now seen corresponding path program 29 times [2022-03-15 15:43:12,670 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:43:12,670 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704014347] [2022-03-15 15:43:12,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:43:12,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:43:12,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:43:12,747 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-03-15 15:43:12,747 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:43:12,747 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704014347] [2022-03-15 15:43:12,748 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704014347] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:43:12,748 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [395676847] [2022-03-15 15:43:12,748 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 15:43:12,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:43:12,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:43:12,752 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) [2022-03-15 15:43:12,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-03-15 15:43:12,783 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-15 15:43:12,783 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:43:12,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-15 15:43:12,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:43:12,880 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-03-15 15:43:12,880 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:43:12,946 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-03-15 15:43:12,946 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [395676847] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:43:12,946 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:43:12,946 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-03-15 15:43:12,946 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186971118] [2022-03-15 15:43:12,946 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:43:12,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-15 15:43:12,946 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:43:12,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-15 15:43:12,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-03-15 15:43:12,947 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) [2022-03-15 15:43:14,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:43:14,177 INFO L93 Difference]: Finished difference Result 79431 states and 527696 transitions. [2022-03-15 15:43:14,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-15 15:43:14,177 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 [2022-03-15 15:43:14,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:43:14,791 INFO L225 Difference]: With dead ends: 79431 [2022-03-15 15:43:14,791 INFO L226 Difference]: Without dead ends: 54866 [2022-03-15 15:43:14,792 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 [2022-03-15 15:43:14,792 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 [2022-03-15 15:43:14,792 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] [2022-03-15 15:43:14,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54866 states. [2022-03-15 15:43:16,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54866 to 40122. [2022-03-15 15:43:16,122 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) [2022-03-15 15:43:16,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40122 states to 40122 states and 277762 transitions. [2022-03-15 15:43:16,581 INFO L78 Accepts]: Start accepts. Automaton has 40122 states and 277762 transitions. Word has length 34 [2022-03-15 15:43:16,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:43:16,581 INFO L470 AbstractCegarLoop]: Abstraction has 40122 states and 277762 transitions. [2022-03-15 15:43:16,581 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) [2022-03-15 15:43:16,581 INFO L276 IsEmpty]: Start isEmpty. Operand 40122 states and 277762 transitions. [2022-03-15 15:43:16,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-03-15 15:43:16,719 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:43:16,719 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] [2022-03-15 15:43:16,735 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2022-03-15 15:43:16,934 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 [2022-03-15 15:43:16,935 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-03-15 15:43:16,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:43:16,935 INFO L85 PathProgramCache]: Analyzing trace with hash -446438244, now seen corresponding path program 30 times [2022-03-15 15:43:16,935 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:43:16,935 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344576936] [2022-03-15 15:43:16,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:43:16,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:43:16,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:43:16,975 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-03-15 15:43:16,975 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:43:16,975 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344576936] [2022-03-15 15:43:16,975 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344576936] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:43:16,975 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1028459027] [2022-03-15 15:43:16,975 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 15:43:16,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:43:16,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:43:16,990 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) [2022-03-15 15:43:16,990 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-03-15 15:43:17,022 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-15 15:43:17,022 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:43:17,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-15 15:43:17,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:43:17,152 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-03-15 15:43:17,152 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:43:17,225 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-03-15 15:43:17,225 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1028459027] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:43:17,225 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:43:17,225 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 5] total 10 [2022-03-15 15:43:17,226 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132884398] [2022-03-15 15:43:17,226 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:43:17,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-15 15:43:17,226 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:43:17,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-15 15:43:17,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-03-15 15:43:17,226 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) [2022-03-15 15:43:18,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:43:18,798 INFO L93 Difference]: Finished difference Result 85865 states and 563740 transitions. [2022-03-15 15:43:18,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-15 15:43:18,799 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 [2022-03-15 15:43:18,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:43:19,293 INFO L225 Difference]: With dead ends: 85865 [2022-03-15 15:43:19,294 INFO L226 Difference]: Without dead ends: 62787 [2022-03-15 15:43:19,294 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 [2022-03-15 15:43:19,295 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 [2022-03-15 15:43:19,295 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] [2022-03-15 15:43:19,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62787 states. [2022-03-15 15:43:20,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62787 to 39220. [2022-03-15 15:43:20,987 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) [2022-03-15 15:43:21,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39220 states to 39220 states and 266519 transitions. [2022-03-15 15:43:21,464 INFO L78 Accepts]: Start accepts. Automaton has 39220 states and 266519 transitions. Word has length 34 [2022-03-15 15:43:21,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:43:21,464 INFO L470 AbstractCegarLoop]: Abstraction has 39220 states and 266519 transitions. [2022-03-15 15:43:21,464 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) [2022-03-15 15:43:21,464 INFO L276 IsEmpty]: Start isEmpty. Operand 39220 states and 266519 transitions. [2022-03-15 15:43:21,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-03-15 15:43:21,605 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:43:21,605 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] [2022-03-15 15:43:21,624 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2022-03-15 15:43:21,823 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 [2022-03-15 15:43:21,823 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-03-15 15:43:21,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:43:21,824 INFO L85 PathProgramCache]: Analyzing trace with hash 422116352, now seen corresponding path program 31 times [2022-03-15 15:43:21,824 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:43:21,824 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420007809] [2022-03-15 15:43:21,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:43:21,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:43:21,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:43:21,869 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-03-15 15:43:21,869 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:43:21,869 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420007809] [2022-03-15 15:43:21,869 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420007809] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:43:21,869 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1050254379] [2022-03-15 15:43:21,869 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 15:43:21,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:43:21,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:43:21,870 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) [2022-03-15 15:43:21,907 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-03-15 15:43:21,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:43:21,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-15 15:43:21,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:43:22,030 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-03-15 15:43:22,031 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:43:22,091 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-03-15 15:43:22,091 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1050254379] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:43:22,092 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:43:22,092 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 5] total 10 [2022-03-15 15:43:22,092 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128951301] [2022-03-15 15:43:22,092 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:43:22,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-15 15:43:22,092 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:43:22,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-15 15:43:22,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-03-15 15:43:22,093 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) [2022-03-15 15:43:23,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:43:23,546 INFO L93 Difference]: Finished difference Result 76848 states and 503197 transitions. [2022-03-15 15:43:23,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-15 15:43:23,547 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 [2022-03-15 15:43:23,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:43:24,088 INFO L225 Difference]: With dead ends: 76848 [2022-03-15 15:43:24,089 INFO L226 Difference]: Without dead ends: 55886 [2022-03-15 15:43:24,089 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 [2022-03-15 15:43:24,089 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 [2022-03-15 15:43:24,089 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] [2022-03-15 15:43:24,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55886 states. [2022-03-15 15:43:25,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55886 to 36632. [2022-03-15 15:43:25,600 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) [2022-03-15 15:43:25,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36632 states to 36632 states and 246679 transitions. [2022-03-15 15:43:25,810 INFO L78 Accepts]: Start accepts. Automaton has 36632 states and 246679 transitions. Word has length 34 [2022-03-15 15:43:25,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:43:25,810 INFO L470 AbstractCegarLoop]: Abstraction has 36632 states and 246679 transitions. [2022-03-15 15:43:25,810 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) [2022-03-15 15:43:25,810 INFO L276 IsEmpty]: Start isEmpty. Operand 36632 states and 246679 transitions. [2022-03-15 15:43:26,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-03-15 15:43:26,221 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:43:26,221 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] [2022-03-15 15:43:26,237 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2022-03-15 15:43:26,436 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 [2022-03-15 15:43:26,436 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-03-15 15:43:26,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:43:26,436 INFO L85 PathProgramCache]: Analyzing trace with hash -87356738, now seen corresponding path program 32 times [2022-03-15 15:43:26,436 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:43:26,436 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487353447] [2022-03-15 15:43:26,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:43:26,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:43:26,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:43:26,471 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-03-15 15:43:26,471 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:43:26,471 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487353447] [2022-03-15 15:43:26,471 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487353447] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:43:26,471 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1016912625] [2022-03-15 15:43:26,471 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 15:43:26,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:43:26,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:43:26,472 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) [2022-03-15 15:43:26,495 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-03-15 15:43:26,504 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 15:43:26,504 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:43:26,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-15 15:43:26,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:43:26,615 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-03-15 15:43:26,615 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:43:26,676 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-03-15 15:43:26,677 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1016912625] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:43:26,677 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:43:26,677 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 11 [2022-03-15 15:43:26,677 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138400446] [2022-03-15 15:43:26,677 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:43:26,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-15 15:43:26,677 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:43:26,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-15 15:43:26,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-03-15 15:43:26,678 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) [2022-03-15 15:43:27,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:43:27,927 INFO L93 Difference]: Finished difference Result 57373 states and 381185 transitions. [2022-03-15 15:43:27,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-15 15:43:27,928 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 [2022-03-15 15:43:27,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:43:28,439 INFO L225 Difference]: With dead ends: 57373 [2022-03-15 15:43:28,439 INFO L226 Difference]: Without dead ends: 52868 [2022-03-15 15:43:28,439 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 [2022-03-15 15:43:28,439 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, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 15:43:28,440 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 257 Invalid, 626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 622 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 15:43:28,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52868 states. [2022-03-15 15:43:29,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52868 to 36632. [2022-03-15 15:43:29,913 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) [2022-03-15 15:43:30,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36632 states to 36632 states and 246679 transitions. [2022-03-15 15:43:30,119 INFO L78 Accepts]: Start accepts. Automaton has 36632 states and 246679 transitions. Word has length 34 [2022-03-15 15:43:30,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:43:30,119 INFO L470 AbstractCegarLoop]: Abstraction has 36632 states and 246679 transitions. [2022-03-15 15:43:30,120 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) [2022-03-15 15:43:30,120 INFO L276 IsEmpty]: Start isEmpty. Operand 36632 states and 246679 transitions. [2022-03-15 15:43:30,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-03-15 15:43:30,483 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:43:30,484 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] [2022-03-15 15:43:30,501 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2022-03-15 15:43:30,684 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 [2022-03-15 15:43:30,684 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-03-15 15:43:30,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:43:30,685 INFO L85 PathProgramCache]: Analyzing trace with hash -1127109322, now seen corresponding path program 33 times [2022-03-15 15:43:30,685 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:43:30,685 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248108921] [2022-03-15 15:43:30,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:43:30,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:43:30,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:43:30,722 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-03-15 15:43:30,723 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:43:30,723 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248108921] [2022-03-15 15:43:30,723 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248108921] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:43:30,723 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [171994385] [2022-03-15 15:43:30,723 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 15:43:30,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:43:30,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:43:30,725 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) [2022-03-15 15:43:30,726 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-03-15 15:43:30,769 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-15 15:43:30,770 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:43:30,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 15 conjunts are in the unsatisfiable core [2022-03-15 15:43:30,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:43:31,046 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-03-15 15:43:31,046 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:43:31,141 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-03-15 15:43:31,141 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [171994385] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:43:31,141 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:43:31,141 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 5] total 16 [2022-03-15 15:43:31,141 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266692496] [2022-03-15 15:43:31,142 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:43:31,142 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-03-15 15:43:31,142 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:43:31,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-03-15 15:43:31,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2022-03-15 15:43:31,142 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) [2022-03-15 15:43:34,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:43:34,106 INFO L93 Difference]: Finished difference Result 88229 states and 577190 transitions. [2022-03-15 15:43:34,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-03-15 15:43:34,106 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 [2022-03-15 15:43:34,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:43:34,846 INFO L225 Difference]: With dead ends: 88229 [2022-03-15 15:43:34,846 INFO L226 Difference]: Without dead ends: 80589 [2022-03-15 15:43:34,847 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 [2022-03-15 15:43:34,848 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, 1.1s IncrementalHoareTripleChecker+Time [2022-03-15 15:43:34,848 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [573 Valid, 1550 Invalid, 3284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 3153 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-15 15:43:34,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80589 states. [2022-03-15 15:43:36,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80589 to 42432. [2022-03-15 15:43:36,993 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) [2022-03-15 15:43:37,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42432 states to 42432 states and 290219 transitions. [2022-03-15 15:43:37,255 INFO L78 Accepts]: Start accepts. Automaton has 42432 states and 290219 transitions. Word has length 34 [2022-03-15 15:43:37,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:43:37,256 INFO L470 AbstractCegarLoop]: Abstraction has 42432 states and 290219 transitions. [2022-03-15 15:43:37,256 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) [2022-03-15 15:43:37,256 INFO L276 IsEmpty]: Start isEmpty. Operand 42432 states and 290219 transitions. [2022-03-15 15:43:37,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-03-15 15:43:37,708 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:43:37,709 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] [2022-03-15 15:43:37,725 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2022-03-15 15:43:37,923 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 [2022-03-15 15:43:37,923 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-03-15 15:43:37,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:43:37,924 INFO L85 PathProgramCache]: Analyzing trace with hash -765936478, now seen corresponding path program 34 times [2022-03-15 15:43:37,924 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:43:37,924 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561370841] [2022-03-15 15:43:37,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:43:37,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:43:37,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:43:38,003 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-03-15 15:43:38,004 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:43:38,004 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561370841] [2022-03-15 15:43:38,004 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561370841] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:43:38,004 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1226904288] [2022-03-15 15:43:38,004 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 15:43:38,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:43:38,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:43:38,005 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) [2022-03-15 15:43:38,011 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-03-15 15:43:38,041 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 15:43:38,041 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:43:38,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-15 15:43:38,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:43:38,157 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-03-15 15:43:38,157 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:43:38,229 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-03-15 15:43:38,230 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1226904288] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:43:38,230 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:43:38,230 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 5] total 9 [2022-03-15 15:43:38,230 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007326894] [2022-03-15 15:43:38,230 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:43:38,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-15 15:43:38,230 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:43:38,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-15 15:43:38,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-03-15 15:43:38,230 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) [2022-03-15 15:43:39,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:43:39,491 INFO L93 Difference]: Finished difference Result 81147 states and 534322 transitions. [2022-03-15 15:43:39,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-15 15:43:39,492 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 [2022-03-15 15:43:39,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:43:40,304 INFO L225 Difference]: With dead ends: 81147 [2022-03-15 15:43:40,304 INFO L226 Difference]: Without dead ends: 63386 [2022-03-15 15:43:40,304 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 [2022-03-15 15:43:40,304 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 [2022-03-15 15:43:40,305 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] [2022-03-15 15:43:40,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63386 states. [2022-03-15 15:43:41,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63386 to 42432. [2022-03-15 15:43:41,779 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) [2022-03-15 15:43:42,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42432 states to 42432 states and 289177 transitions. [2022-03-15 15:43:42,026 INFO L78 Accepts]: Start accepts. Automaton has 42432 states and 289177 transitions. Word has length 34 [2022-03-15 15:43:42,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:43:42,026 INFO L470 AbstractCegarLoop]: Abstraction has 42432 states and 289177 transitions. [2022-03-15 15:43:42,026 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) [2022-03-15 15:43:42,026 INFO L276 IsEmpty]: Start isEmpty. Operand 42432 states and 289177 transitions. [2022-03-15 15:43:42,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-03-15 15:43:42,484 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:43:42,484 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] [2022-03-15 15:43:42,499 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2022-03-15 15:43:42,699 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 [2022-03-15 15:43:42,699 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-03-15 15:43:42,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:43:42,700 INFO L85 PathProgramCache]: Analyzing trace with hash 102618118, now seen corresponding path program 35 times [2022-03-15 15:43:42,700 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:43:42,700 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479869353] [2022-03-15 15:43:42,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:43:42,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:43:42,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:43:42,748 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-03-15 15:43:42,748 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:43:42,748 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479869353] [2022-03-15 15:43:42,748 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479869353] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:43:42,748 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1994475325] [2022-03-15 15:43:42,748 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 15:43:42,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:43:42,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:43:42,749 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) [2022-03-15 15:43:42,750 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-03-15 15:43:42,780 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-03-15 15:43:42,781 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:43:42,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-15 15:43:42,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:43:42,911 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-03-15 15:43:42,911 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:43:42,984 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-03-15 15:43:42,985 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1994475325] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:43:42,985 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:43:42,985 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 5] total 9 [2022-03-15 15:43:42,985 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229416398] [2022-03-15 15:43:42,985 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:43:42,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-15 15:43:42,985 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:43:42,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-15 15:43:42,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-03-15 15:43:42,985 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) [2022-03-15 15:43:44,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:43:44,058 INFO L93 Difference]: Finished difference Result 71541 states and 473268 transitions. [2022-03-15 15:43:44,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-15 15:43:44,058 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 [2022-03-15 15:43:44,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:43:44,517 INFO L225 Difference]: With dead ends: 71541 [2022-03-15 15:43:44,517 INFO L226 Difference]: Without dead ends: 64074 [2022-03-15 15:43:44,517 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 59 SyntacticMatches, 6 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-03-15 15:43:44,517 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 [2022-03-15 15:43:44,517 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] [2022-03-15 15:43:44,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64074 states. [2022-03-15 15:43:45,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64074 to 41390. [2022-03-15 15:43:46,064 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) [2022-03-15 15:43:46,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41390 states to 41390 states and 279068 transitions. [2022-03-15 15:43:46,514 INFO L78 Accepts]: Start accepts. Automaton has 41390 states and 279068 transitions. Word has length 34 [2022-03-15 15:43:46,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:43:46,514 INFO L470 AbstractCegarLoop]: Abstraction has 41390 states and 279068 transitions. [2022-03-15 15:43:46,514 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) [2022-03-15 15:43:46,514 INFO L276 IsEmpty]: Start isEmpty. Operand 41390 states and 279068 transitions. [2022-03-15 15:43:46,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-03-15 15:43:46,643 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:43:46,643 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] [2022-03-15 15:43:46,660 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2022-03-15 15:43:46,853 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 [2022-03-15 15:43:46,853 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-03-15 15:43:46,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:43:46,853 INFO L85 PathProgramCache]: Analyzing trace with hash -406854972, now seen corresponding path program 36 times [2022-03-15 15:43:46,853 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:43:46,853 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354158976] [2022-03-15 15:43:46,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:43:46,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:43:46,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:43:46,903 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-03-15 15:43:46,903 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:43:46,903 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354158976] [2022-03-15 15:43:46,903 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354158976] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:43:46,903 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [731291239] [2022-03-15 15:43:46,903 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 15:43:46,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:43:46,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:43:46,904 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) [2022-03-15 15:43:46,905 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-03-15 15:43:46,937 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-15 15:43:46,937 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:43:46,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-15 15:43:46,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:43:47,036 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-03-15 15:43:47,036 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:43:47,102 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-03-15 15:43:47,102 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [731291239] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:43:47,102 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:43:47,102 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 6] total 10 [2022-03-15 15:43:47,102 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524902525] [2022-03-15 15:43:47,103 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:43:47,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-15 15:43:47,103 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:43:47,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-15 15:43:47,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-03-15 15:43:47,103 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) [2022-03-15 15:43:48,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:43:48,855 INFO L93 Difference]: Finished difference Result 107476 states and 703763 transitions. [2022-03-15 15:43:48,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-15 15:43:48,856 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 [2022-03-15 15:43:48,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:43:49,601 INFO L225 Difference]: With dead ends: 107476 [2022-03-15 15:43:49,601 INFO L226 Difference]: Without dead ends: 59104 [2022-03-15 15:43:49,601 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 [2022-03-15 15:43:49,602 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 [2022-03-15 15:43:49,602 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] [2022-03-15 15:43:49,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59104 states. [2022-03-15 15:43:51,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59104 to 35138. [2022-03-15 15:43:51,131 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) [2022-03-15 15:43:51,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35138 states to 35138 states and 234044 transitions. [2022-03-15 15:43:51,327 INFO L78 Accepts]: Start accepts. Automaton has 35138 states and 234044 transitions. Word has length 34 [2022-03-15 15:43:51,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:43:51,327 INFO L470 AbstractCegarLoop]: Abstraction has 35138 states and 234044 transitions. [2022-03-15 15:43:51,327 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) [2022-03-15 15:43:51,327 INFO L276 IsEmpty]: Start isEmpty. Operand 35138 states and 234044 transitions. [2022-03-15 15:43:51,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-03-15 15:43:51,431 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:43:51,431 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] [2022-03-15 15:43:51,448 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2022-03-15 15:43:51,633 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 [2022-03-15 15:43:51,634 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-03-15 15:43:51,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:43:51,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1488821512, now seen corresponding path program 37 times [2022-03-15 15:43:51,634 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:43:51,634 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836073651] [2022-03-15 15:43:51,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:43:51,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:43:51,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:43:51,685 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-03-15 15:43:51,685 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:43:51,685 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836073651] [2022-03-15 15:43:51,685 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836073651] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:43:51,685 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [604840355] [2022-03-15 15:43:51,685 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 15:43:51,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:43:51,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:43:51,686 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) [2022-03-15 15:43:51,687 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-03-15 15:43:51,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:43:51,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-15 15:43:51,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:43:51,812 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-03-15 15:43:51,812 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:43:51,877 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-03-15 15:43:51,877 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [604840355] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:43:51,878 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:43:51,878 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-03-15 15:43:51,878 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682814462] [2022-03-15 15:43:51,878 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:43:51,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-15 15:43:51,878 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:43:51,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-15 15:43:51,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-03-15 15:43:51,878 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) [2022-03-15 15:43:52,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:43:52,857 INFO L93 Difference]: Finished difference Result 46655 states and 309604 transitions. [2022-03-15 15:43:52,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-15 15:43:52,862 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 [2022-03-15 15:43:52,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:43:53,299 INFO L225 Difference]: With dead ends: 46655 [2022-03-15 15:43:53,300 INFO L226 Difference]: Without dead ends: 41390 [2022-03-15 15:43:53,300 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 [2022-03-15 15:43:53,300 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 [2022-03-15 15:43:53,300 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] [2022-03-15 15:43:53,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41390 states. [2022-03-15 15:43:54,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41390 to 37222. [2022-03-15 15:43:54,457 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) [2022-03-15 15:43:55,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37222 states to 37222 states and 248010 transitions. [2022-03-15 15:43:55,021 INFO L78 Accepts]: Start accepts. Automaton has 37222 states and 248010 transitions. Word has length 34 [2022-03-15 15:43:55,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:43:55,021 INFO L470 AbstractCegarLoop]: Abstraction has 37222 states and 248010 transitions. [2022-03-15 15:43:55,022 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) [2022-03-15 15:43:55,022 INFO L276 IsEmpty]: Start isEmpty. Operand 37222 states and 248010 transitions. [2022-03-15 15:43:55,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-03-15 15:43:55,172 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:43:55,173 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] [2022-03-15 15:43:55,190 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2022-03-15 15:43:55,389 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 [2022-03-15 15:43:55,389 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-03-15 15:43:55,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:43:55,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1002227485, now seen corresponding path program 38 times [2022-03-15 15:43:55,389 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:43:55,390 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957680438] [2022-03-15 15:43:55,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:43:55,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:43:55,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:43:55,453 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-03-15 15:43:55,454 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:43:55,454 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957680438] [2022-03-15 15:43:55,454 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957680438] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:43:55,454 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2099775297] [2022-03-15 15:43:55,454 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 15:43:55,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:43:55,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:43:55,455 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) [2022-03-15 15:43:55,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-03-15 15:43:55,490 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 15:43:55,490 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:43:55,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 15 conjunts are in the unsatisfiable core [2022-03-15 15:43:55,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:43:55,658 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-03-15 15:43:55,658 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:43:55,709 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-03-15 15:43:55,709 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2099775297] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:43:55,709 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:43:55,709 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 5] total 12 [2022-03-15 15:43:55,709 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985939760] [2022-03-15 15:43:55,709 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:43:55,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-15 15:43:55,710 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:43:55,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-15 15:43:55,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-03-15 15:43:55,710 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) [2022-03-15 15:43:58,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:43:58,472 INFO L93 Difference]: Finished difference Result 117742 states and 763520 transitions. [2022-03-15 15:43:58,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-03-15 15:43:58,472 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 [2022-03-15 15:43:58,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:44:00,148 INFO L225 Difference]: With dead ends: 117742 [2022-03-15 15:44:00,148 INFO L226 Difference]: Without dead ends: 111949 [2022-03-15 15:44:00,148 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 [2022-03-15 15:44:00,150 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, 0.9s IncrementalHoareTripleChecker+Time [2022-03-15 15:44:00,150 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [294 Valid, 1303 Invalid, 2452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 2426 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-15 15:44:00,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111949 states. [2022-03-15 15:44:03,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111949 to 73250. [2022-03-15 15:44:03,651 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) [2022-03-15 15:44:04,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73250 states to 73250 states and 509721 transitions. [2022-03-15 15:44:04,616 INFO L78 Accepts]: Start accepts. Automaton has 73250 states and 509721 transitions. Word has length 35 [2022-03-15 15:44:04,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:44:04,616 INFO L470 AbstractCegarLoop]: Abstraction has 73250 states and 509721 transitions. [2022-03-15 15:44:04,617 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) [2022-03-15 15:44:04,617 INFO L276 IsEmpty]: Start isEmpty. Operand 73250 states and 509721 transitions. [2022-03-15 15:44:04,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-03-15 15:44:04,926 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:44:04,926 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] [2022-03-15 15:44:04,944 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2022-03-15 15:44:05,139 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 [2022-03-15 15:44:05,139 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-03-15 15:44:05,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:44:05,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1664851718, now seen corresponding path program 39 times [2022-03-15 15:44:05,140 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:44:05,140 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574281217] [2022-03-15 15:44:05,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:44:05,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:44:05,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:44:05,194 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-03-15 15:44:05,194 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:44:05,194 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574281217] [2022-03-15 15:44:05,194 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574281217] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:44:05,194 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1249681800] [2022-03-15 15:44:05,194 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 15:44:05,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:44:05,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:44:05,196 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) [2022-03-15 15:44:05,197 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2022-03-15 15:44:05,228 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-15 15:44:05,228 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:44:05,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-15 15:44:05,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:44:05,367 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-03-15 15:44:05,367 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:44:05,443 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-03-15 15:44:05,443 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1249681800] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:44:05,444 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:44:05,444 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 6] total 11 [2022-03-15 15:44:05,444 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309479392] [2022-03-15 15:44:05,444 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:44:05,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-15 15:44:05,444 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:44:05,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-15 15:44:05,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-03-15 15:44:05,444 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) [2022-03-15 15:44:07,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:44:07,154 INFO L93 Difference]: Finished difference Result 97805 states and 659980 transitions. [2022-03-15 15:44:07,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-15 15:44:07,155 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 [2022-03-15 15:44:07,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:44:08,104 INFO L225 Difference]: With dead ends: 97805 [2022-03-15 15:44:08,104 INFO L226 Difference]: Without dead ends: 92064 [2022-03-15 15:44:08,104 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 [2022-03-15 15:44:08,104 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 130 mSDsluCounter, 976 mSDsCounter, 0 mSdLazyCounter, 989 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 15:44:08,105 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [130 Valid, 449 Invalid, 991 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 989 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 15:44:08,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92064 states. [2022-03-15 15:44:10,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92064 to 74286. [2022-03-15 15:44:11,162 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) [2022-03-15 15:44:12,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74286 states to 74286 states and 512164 transitions. [2022-03-15 15:44:12,197 INFO L78 Accepts]: Start accepts. Automaton has 74286 states and 512164 transitions. Word has length 36 [2022-03-15 15:44:12,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:44:12,197 INFO L470 AbstractCegarLoop]: Abstraction has 74286 states and 512164 transitions. [2022-03-15 15:44:12,197 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) [2022-03-15 15:44:12,197 INFO L276 IsEmpty]: Start isEmpty. Operand 74286 states and 512164 transitions. [2022-03-15 15:44:12,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-03-15 15:44:12,940 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:44:12,940 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] [2022-03-15 15:44:12,959 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2022-03-15 15:44:13,155 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 [2022-03-15 15:44:13,155 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-03-15 15:44:13,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:44:13,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1427550028, now seen corresponding path program 40 times [2022-03-15 15:44:13,156 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:44:13,156 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814087123] [2022-03-15 15:44:13,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:44:13,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:44:13,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:44:13,249 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-03-15 15:44:13,249 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:44:13,249 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814087123] [2022-03-15 15:44:13,249 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814087123] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:44:13,249 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [727721225] [2022-03-15 15:44:13,249 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 15:44:13,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:44:13,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:44:13,250 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) [2022-03-15 15:44:13,271 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2022-03-15 15:44:13,294 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 15:44:13,294 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:44:13,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-15 15:44:13,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:44:13,461 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-03-15 15:44:13,461 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:44:13,548 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-03-15 15:44:13,549 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [727721225] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:44:13,549 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:44:13,549 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2022-03-15 15:44:13,549 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020879689] [2022-03-15 15:44:13,549 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:44:13,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-15 15:44:13,550 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:44:13,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-15 15:44:13,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-03-15 15:44:13,550 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) [2022-03-15 15:44:15,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:44:15,567 INFO L93 Difference]: Finished difference Result 103074 states and 691482 transitions. [2022-03-15 15:44:15,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-15 15:44:15,568 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 [2022-03-15 15:44:15,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:44:16,154 INFO L225 Difference]: With dead ends: 103074 [2022-03-15 15:44:16,154 INFO L226 Difference]: Without dead ends: 85288 [2022-03-15 15:44:16,154 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 57 SyntacticMatches, 10 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2022-03-15 15:44:16,154 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, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 15:44:16,155 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [287 Valid, 462 Invalid, 1009 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 996 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 15:44:16,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85288 states. [2022-03-15 15:44:18,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85288 to 65821. [2022-03-15 15:44:18,600 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) [2022-03-15 15:44:19,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65821 states to 65821 states and 452356 transitions. [2022-03-15 15:44:19,428 INFO L78 Accepts]: Start accepts. Automaton has 65821 states and 452356 transitions. Word has length 36 [2022-03-15 15:44:19,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:44:19,429 INFO L470 AbstractCegarLoop]: Abstraction has 65821 states and 452356 transitions. [2022-03-15 15:44:19,429 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) [2022-03-15 15:44:19,429 INFO L276 IsEmpty]: Start isEmpty. Operand 65821 states and 452356 transitions. [2022-03-15 15:44:19,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-03-15 15:44:19,977 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:44:19,977 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] [2022-03-15 15:44:19,995 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2022-03-15 15:44:20,184 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 [2022-03-15 15:44:20,184 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-03-15 15:44:20,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:44:20,184 INFO L85 PathProgramCache]: Analyzing trace with hash -618057222, now seen corresponding path program 41 times [2022-03-15 15:44:20,185 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:44:20,185 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797511032] [2022-03-15 15:44:20,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:44:20,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:44:20,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:44:20,235 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-03-15 15:44:20,235 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:44:20,235 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797511032] [2022-03-15 15:44:20,235 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797511032] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:44:20,235 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [874326042] [2022-03-15 15:44:20,235 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 15:44:20,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:44:20,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:44:20,237 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) [2022-03-15 15:44:20,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2022-03-15 15:44:20,293 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-03-15 15:44:20,293 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:44:20,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-15 15:44:20,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:44:20,424 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-03-15 15:44:20,425 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:44:20,494 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-03-15 15:44:20,494 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [874326042] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:44:20,494 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:44:20,494 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 6] total 12 [2022-03-15 15:44:20,495 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274621967] [2022-03-15 15:44:20,495 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:44:20,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-15 15:44:20,495 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:44:20,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-15 15:44:20,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2022-03-15 15:44:20,495 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) [2022-03-15 15:44:22,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:44:22,252 INFO L93 Difference]: Finished difference Result 97148 states and 645553 transitions. [2022-03-15 15:44:22,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-15 15:44:22,253 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 [2022-03-15 15:44:22,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:44:22,900 INFO L225 Difference]: With dead ends: 97148 [2022-03-15 15:44:22,900 INFO L226 Difference]: Without dead ends: 86980 [2022-03-15 15:44:22,900 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 [2022-03-15 15:44:22,901 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, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 15:44:22,901 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [166 Valid, 396 Invalid, 871 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 867 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 15:44:23,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86980 states. [2022-03-15 15:44:25,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86980 to 65822. [2022-03-15 15:44:25,680 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) [2022-03-15 15:44:26,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65822 states to 65822 states and 447282 transitions. [2022-03-15 15:44:26,448 INFO L78 Accepts]: Start accepts. Automaton has 65822 states and 447282 transitions. Word has length 36 [2022-03-15 15:44:26,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:44:26,449 INFO L470 AbstractCegarLoop]: Abstraction has 65822 states and 447282 transitions. [2022-03-15 15:44:26,449 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) [2022-03-15 15:44:26,449 INFO L276 IsEmpty]: Start isEmpty. Operand 65822 states and 447282 transitions. [2022-03-15 15:44:27,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-03-15 15:44:27,006 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:44:27,006 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] [2022-03-15 15:44:27,023 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2022-03-15 15:44:27,221 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 [2022-03-15 15:44:27,221 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-03-15 15:44:27,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:44:27,222 INFO L85 PathProgramCache]: Analyzing trace with hash -1298708386, now seen corresponding path program 42 times [2022-03-15 15:44:27,222 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:44:27,222 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106780837] [2022-03-15 15:44:27,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:44:27,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:44:27,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:44:27,258 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-03-15 15:44:27,259 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:44:27,259 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106780837] [2022-03-15 15:44:27,259 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106780837] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:44:27,259 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1631119814] [2022-03-15 15:44:27,259 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 15:44:27,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:44:27,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:44:27,260 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) [2022-03-15 15:44:27,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2022-03-15 15:44:27,301 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-15 15:44:27,302 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:44:27,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-15 15:44:27,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:44:27,433 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-03-15 15:44:27,434 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:44:27,506 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-03-15 15:44:27,506 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1631119814] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:44:27,506 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:44:27,506 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 6] total 12 [2022-03-15 15:44:27,506 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450270758] [2022-03-15 15:44:27,506 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:44:27,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-15 15:44:27,506 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:44:27,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-15 15:44:27,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2022-03-15 15:44:27,507 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) [2022-03-15 15:44:29,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:44:29,521 INFO L93 Difference]: Finished difference Result 98844 states and 653962 transitions. [2022-03-15 15:44:29,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-15 15:44:29,521 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 [2022-03-15 15:44:29,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:44:30,356 INFO L225 Difference]: With dead ends: 98844 [2022-03-15 15:44:30,356 INFO L226 Difference]: Without dead ends: 84448 [2022-03-15 15:44:30,357 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 [2022-03-15 15:44:30,357 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 182 mSDsluCounter, 946 mSDsCounter, 0 mSdLazyCounter, 1022 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.7s IncrementalHoareTripleChecker+Time [2022-03-15 15:44:30,357 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [182 Valid, 446 Invalid, 1028 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1022 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-15 15:44:30,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84448 states. [2022-03-15 15:44:32,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84448 to 65822. [2022-03-15 15:44:32,838 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) [2022-03-15 15:44:33,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65822 states to 65822 states and 445590 transitions. [2022-03-15 15:44:33,593 INFO L78 Accepts]: Start accepts. Automaton has 65822 states and 445590 transitions. Word has length 36 [2022-03-15 15:44:33,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:44:33,594 INFO L470 AbstractCegarLoop]: Abstraction has 65822 states and 445590 transitions. [2022-03-15 15:44:33,594 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) [2022-03-15 15:44:33,594 INFO L276 IsEmpty]: Start isEmpty. Operand 65822 states and 445590 transitions. [2022-03-15 15:44:33,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-03-15 15:44:33,827 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:44:33,827 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] [2022-03-15 15:44:33,845 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2022-03-15 15:44:34,031 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 [2022-03-15 15:44:34,033 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-03-15 15:44:34,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:44:34,034 INFO L85 PathProgramCache]: Analyzing trace with hash 1985141660, now seen corresponding path program 43 times [2022-03-15 15:44:34,034 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:44:34,034 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127582968] [2022-03-15 15:44:34,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:44:34,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:44:34,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:44:34,121 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-03-15 15:44:34,121 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:44:34,121 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127582968] [2022-03-15 15:44:34,121 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127582968] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:44:34,121 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [331603032] [2022-03-15 15:44:34,121 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 15:44:34,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:44:34,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:44:34,123 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) [2022-03-15 15:44:34,475 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2022-03-15 15:44:34,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:44:34,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-15 15:44:34,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:44:34,661 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-03-15 15:44:34,661 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:44:34,748 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-03-15 15:44:34,749 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [331603032] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:44:34,749 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:44:34,749 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 7] total 13 [2022-03-15 15:44:34,749 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252144054] [2022-03-15 15:44:34,749 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:44:34,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-15 15:44:34,749 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:44:34,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-15 15:44:34,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-03-15 15:44:34,749 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) [2022-03-15 15:44:36,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:44:36,194 INFO L93 Difference]: Finished difference Result 92059 states and 611851 transitions. [2022-03-15 15:44:36,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-15 15:44:36,195 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 [2022-03-15 15:44:36,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:44:37,069 INFO L225 Difference]: With dead ends: 92059 [2022-03-15 15:44:37,069 INFO L226 Difference]: Without dead ends: 90364 [2022-03-15 15:44:37,069 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 60 SyntacticMatches, 7 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2022-03-15 15:44:37,083 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, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 15:44:37,083 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [155 Valid, 428 Invalid, 979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 973 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 15:44:37,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90364 states. [2022-03-15 15:44:39,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90364 to 65822. [2022-03-15 15:44:39,905 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) [2022-03-15 15:44:40,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65822 states to 65822 states and 445590 transitions. [2022-03-15 15:44:40,708 INFO L78 Accepts]: Start accepts. Automaton has 65822 states and 445590 transitions. Word has length 36 [2022-03-15 15:44:40,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:44:40,710 INFO L470 AbstractCegarLoop]: Abstraction has 65822 states and 445590 transitions. [2022-03-15 15:44:40,710 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) [2022-03-15 15:44:40,710 INFO L276 IsEmpty]: Start isEmpty. Operand 65822 states and 445590 transitions. [2022-03-15 15:44:41,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-03-15 15:44:41,002 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:44:41,002 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] [2022-03-15 15:44:41,018 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2022-03-15 15:44:41,207 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 [2022-03-15 15:44:41,207 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-03-15 15:44:41,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:44:41,207 INFO L85 PathProgramCache]: Analyzing trace with hash -279516632, now seen corresponding path program 44 times [2022-03-15 15:44:41,207 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:44:41,207 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526189916] [2022-03-15 15:44:41,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:44:41,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:44:41,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:44:41,242 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-03-15 15:44:41,242 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:44:41,242 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526189916] [2022-03-15 15:44:41,242 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526189916] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:44:41,242 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1440516831] [2022-03-15 15:44:41,242 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 15:44:41,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:44:41,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:44:41,256 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) [2022-03-15 15:44:41,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2022-03-15 15:44:41,288 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 15:44:41,288 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:44:41,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-15 15:44:41,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:44:41,712 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-03-15 15:44:41,712 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:44:41,792 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-03-15 15:44:41,792 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1440516831] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:44:41,792 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:44:41,792 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 6] total 13 [2022-03-15 15:44:41,792 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394699587] [2022-03-15 15:44:41,793 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:44:41,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-15 15:44:41,793 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:44:41,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-15 15:44:41,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-03-15 15:44:41,793 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) [2022-03-15 15:44:43,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:44:43,935 INFO L93 Difference]: Finished difference Result 115771 states and 758340 transitions. [2022-03-15 15:44:43,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-15 15:44:43,935 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 [2022-03-15 15:44:43,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:44:44,774 INFO L225 Difference]: With dead ends: 115771 [2022-03-15 15:44:44,775 INFO L226 Difference]: Without dead ends: 103060 [2022-03-15 15:44:44,776 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 [2022-03-15 15:44:44,776 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, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 15:44:44,776 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [243 Valid, 517 Invalid, 1129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1120 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 15:44:45,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103060 states. [2022-03-15 15:44:47,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103060 to 64975. [2022-03-15 15:44:47,827 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) [2022-03-15 15:44:48,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64975 states to 64975 states and 438423 transitions. [2022-03-15 15:44:48,659 INFO L78 Accepts]: Start accepts. Automaton has 64975 states and 438423 transitions. Word has length 36 [2022-03-15 15:44:48,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:44:48,660 INFO L470 AbstractCegarLoop]: Abstraction has 64975 states and 438423 transitions. [2022-03-15 15:44:48,660 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) [2022-03-15 15:44:48,660 INFO L276 IsEmpty]: Start isEmpty. Operand 64975 states and 438423 transitions. [2022-03-15 15:44:48,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-03-15 15:44:48,955 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:44:48,955 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] [2022-03-15 15:44:48,971 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2022-03-15 15:44:49,171 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 [2022-03-15 15:44:49,172 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-03-15 15:44:49,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:44:49,173 INFO L85 PathProgramCache]: Analyzing trace with hash -960167796, now seen corresponding path program 45 times [2022-03-15 15:44:49,173 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:44:49,173 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832174112] [2022-03-15 15:44:49,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:44:49,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:44:49,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:44:49,223 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-03-15 15:44:49,224 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:44:49,224 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832174112] [2022-03-15 15:44:49,224 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832174112] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:44:49,224 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2007674261] [2022-03-15 15:44:49,224 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 15:44:49,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:44:49,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:44:49,226 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) [2022-03-15 15:44:49,227 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2022-03-15 15:44:49,258 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-15 15:44:49,258 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:44:49,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-15 15:44:49,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:44:49,411 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-03-15 15:44:49,411 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:44:49,482 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-03-15 15:44:49,482 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2007674261] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:44:49,482 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:44:49,482 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 6] total 13 [2022-03-15 15:44:49,482 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278599189] [2022-03-15 15:44:49,482 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:44:49,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-15 15:44:49,482 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:44:49,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-15 15:44:49,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-03-15 15:44:49,484 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) [2022-03-15 15:44:51,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:44:51,416 INFO L93 Difference]: Finished difference Result 102225 states and 669079 transitions. [2022-03-15 15:44:51,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-15 15:44:51,417 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 [2022-03-15 15:44:51,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:44:52,379 INFO L225 Difference]: With dead ends: 102225 [2022-03-15 15:44:52,379 INFO L226 Difference]: Without dead ends: 89525 [2022-03-15 15:44:52,379 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 [2022-03-15 15:44:52,379 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 [2022-03-15 15:44:52,379 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] [2022-03-15 15:44:52,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89525 states. [2022-03-15 15:44:54,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89525 to 66667. [2022-03-15 15:44:55,089 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) [2022-03-15 15:44:55,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66667 states to 66667 states and 443445 transitions. [2022-03-15 15:44:55,971 INFO L78 Accepts]: Start accepts. Automaton has 66667 states and 443445 transitions. Word has length 36 [2022-03-15 15:44:55,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:44:55,971 INFO L470 AbstractCegarLoop]: Abstraction has 66667 states and 443445 transitions. [2022-03-15 15:44:55,971 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) [2022-03-15 15:44:55,971 INFO L276 IsEmpty]: Start isEmpty. Operand 66667 states and 443445 transitions. [2022-03-15 15:44:56,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-03-15 15:44:56,319 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:44:56,319 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] [2022-03-15 15:44:56,336 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2022-03-15 15:44:56,522 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 [2022-03-15 15:44:56,522 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-03-15 15:44:56,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:44:56,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1971285046, now seen corresponding path program 46 times [2022-03-15 15:44:56,522 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:44:56,522 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936558384] [2022-03-15 15:44:56,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:44:56,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:44:56,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:44:56,563 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-03-15 15:44:56,563 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:44:56,563 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936558384] [2022-03-15 15:44:56,563 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936558384] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:44:56,563 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [689482733] [2022-03-15 15:44:56,563 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 15:44:56,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:44:56,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:44:56,564 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) [2022-03-15 15:44:56,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2022-03-15 15:44:56,599 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 15:44:56,599 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:44:56,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-15 15:44:56,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:44:56,744 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-03-15 15:44:56,744 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:44:56,817 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-03-15 15:44:56,817 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [689482733] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:44:56,817 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:44:56,817 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 7] total 14 [2022-03-15 15:44:56,818 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557397740] [2022-03-15 15:44:56,818 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:44:56,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-15 15:44:56,818 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:44:56,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-15 15:44:56,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2022-03-15 15:44:56,819 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) [2022-03-15 15:44:59,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:44:59,609 INFO L93 Difference]: Finished difference Result 119143 states and 777673 transitions. [2022-03-15 15:44:59,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-15 15:44:59,609 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 [2022-03-15 15:44:59,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:45:01,043 INFO L225 Difference]: With dead ends: 119143 [2022-03-15 15:45:01,044 INFO L226 Difference]: Without dead ends: 100507 [2022-03-15 15:45:01,044 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 [2022-03-15 15:45:01,044 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, 0.8s IncrementalHoareTripleChecker+Time [2022-03-15 15:45:01,044 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [250 Valid, 425 Invalid, 1028 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1018 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-15 15:45:01,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100507 states. [2022-03-15 15:45:03,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100507 to 61591. [2022-03-15 15:45:03,705 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) [2022-03-15 15:45:04,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61591 states to 61591 states and 408075 transitions. [2022-03-15 15:45:04,579 INFO L78 Accepts]: Start accepts. Automaton has 61591 states and 408075 transitions. Word has length 36 [2022-03-15 15:45:04,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:45:04,580 INFO L470 AbstractCegarLoop]: Abstraction has 61591 states and 408075 transitions. [2022-03-15 15:45:04,580 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) [2022-03-15 15:45:04,580 INFO L276 IsEmpty]: Start isEmpty. Operand 61591 states and 408075 transitions. [2022-03-15 15:45:04,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-03-15 15:45:04,952 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:45:04,952 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] [2022-03-15 15:45:04,968 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2022-03-15 15:45:05,168 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 [2022-03-15 15:45:05,168 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-03-15 15:45:05,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:45:05,169 INFO L85 PathProgramCache]: Analyzing trace with hash 2054935822, now seen corresponding path program 47 times [2022-03-15 15:45:05,169 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:45:05,169 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012435972] [2022-03-15 15:45:05,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:45:05,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:45:05,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:45:05,216 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-03-15 15:45:05,217 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:45:05,217 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012435972] [2022-03-15 15:45:05,217 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012435972] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:45:05,217 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [720755025] [2022-03-15 15:45:05,217 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 15:45:05,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:45:05,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:45:05,224 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) [2022-03-15 15:45:05,225 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2022-03-15 15:45:05,258 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-03-15 15:45:05,258 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:45:05,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-15 15:45:05,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:45:05,419 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-03-15 15:45:05,419 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:45:05,493 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-03-15 15:45:05,493 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [720755025] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:45:05,493 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:45:05,493 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 15 [2022-03-15 15:45:05,493 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71346005] [2022-03-15 15:45:05,493 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:45:05,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-15 15:45:05,494 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:45:05,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-15 15:45:05,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2022-03-15 15:45:05,494 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) [2022-03-15 15:45:07,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:45:07,378 INFO L93 Difference]: Finished difference Result 90358 states and 592436 transitions. [2022-03-15 15:45:07,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-15 15:45:07,379 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 [2022-03-15 15:45:07,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:45:07,994 INFO L225 Difference]: With dead ends: 90358 [2022-03-15 15:45:07,994 INFO L226 Difference]: Without dead ends: 88663 [2022-03-15 15:45:07,994 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 [2022-03-15 15:45:07,995 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 209 mSDsluCounter, 916 mSDsCounter, 0 mSdLazyCounter, 1112 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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 [2022-03-15 15:45:07,995 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] [2022-03-15 15:45:08,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88663 states. [2022-03-15 15:45:10,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88663 to 61591. [2022-03-15 15:45:10,387 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) [2022-03-15 15:45:11,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61591 states to 61591 states and 408075 transitions. [2022-03-15 15:45:11,124 INFO L78 Accepts]: Start accepts. Automaton has 61591 states and 408075 transitions. Word has length 36 [2022-03-15 15:45:11,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:45:11,124 INFO L470 AbstractCegarLoop]: Abstraction has 61591 states and 408075 transitions. [2022-03-15 15:45:11,124 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) [2022-03-15 15:45:11,124 INFO L276 IsEmpty]: Start isEmpty. Operand 61591 states and 408075 transitions. [2022-03-15 15:45:11,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-03-15 15:45:11,641 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:45:11,641 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] [2022-03-15 15:45:11,656 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2022-03-15 15:45:11,841 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 [2022-03-15 15:45:11,842 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-03-15 15:45:11,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:45:11,842 INFO L85 PathProgramCache]: Analyzing trace with hash 538181982, now seen corresponding path program 48 times [2022-03-15 15:45:11,842 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:45:11,842 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002970227] [2022-03-15 15:45:11,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:45:11,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:45:11,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:45:11,881 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-03-15 15:45:11,881 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:45:11,881 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002970227] [2022-03-15 15:45:11,881 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002970227] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:45:11,881 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [677000717] [2022-03-15 15:45:11,882 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 15:45:11,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:45:11,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:45:11,883 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) [2022-03-15 15:45:11,883 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2022-03-15 15:45:11,914 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-15 15:45:11,914 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:45:11,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-15 15:45:11,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:45:12,073 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-03-15 15:45:12,073 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:45:12,145 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-03-15 15:45:12,146 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [677000717] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:45:12,146 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:45:12,146 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 15 [2022-03-15 15:45:12,146 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904679119] [2022-03-15 15:45:12,146 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:45:12,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-15 15:45:12,147 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:45:12,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-15 15:45:12,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2022-03-15 15:45:12,148 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) [2022-03-15 15:45:14,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:45:14,129 INFO L93 Difference]: Finished difference Result 112379 states and 733060 transitions. [2022-03-15 15:45:14,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-15 15:45:14,129 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 [2022-03-15 15:45:14,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:45:14,881 INFO L225 Difference]: With dead ends: 112379 [2022-03-15 15:45:14,881 INFO L226 Difference]: Without dead ends: 101368 [2022-03-15 15:45:14,882 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 [2022-03-15 15:45:14,882 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 [2022-03-15 15:45:14,882 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] [2022-03-15 15:45:15,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101368 states. [2022-03-15 15:45:17,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101368 to 56512. [2022-03-15 15:45:17,966 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) [2022-03-15 15:45:18,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56512 states to 56512 states and 372698 transitions. [2022-03-15 15:45:18,450 INFO L78 Accepts]: Start accepts. Automaton has 56512 states and 372698 transitions. Word has length 36 [2022-03-15 15:45:18,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:45:18,450 INFO L470 AbstractCegarLoop]: Abstraction has 56512 states and 372698 transitions. [2022-03-15 15:45:18,450 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) [2022-03-15 15:45:18,450 INFO L276 IsEmpty]: Start isEmpty. Operand 56512 states and 372698 transitions. [2022-03-15 15:45:19,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-03-15 15:45:19,025 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:45:19,025 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] [2022-03-15 15:45:19,043 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2022-03-15 15:45:19,241 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 [2022-03-15 15:45:19,241 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-03-15 15:45:19,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:45:19,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1081312328, now seen corresponding path program 49 times [2022-03-15 15:45:19,241 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:45:19,241 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814487328] [2022-03-15 15:45:19,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:45:19,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:45:19,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:45:19,283 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-03-15 15:45:19,283 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:45:19,283 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814487328] [2022-03-15 15:45:19,283 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814487328] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:45:19,283 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1597947691] [2022-03-15 15:45:19,283 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 15:45:19,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:45:19,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:45:19,285 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) [2022-03-15 15:45:19,286 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2022-03-15 15:45:19,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:45:19,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-15 15:45:19,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:45:19,476 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-03-15 15:45:19,476 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:45:19,543 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-03-15 15:45:19,544 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1597947691] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:45:19,544 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:45:19,544 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 7] total 13 [2022-03-15 15:45:19,544 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23951727] [2022-03-15 15:45:19,544 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:45:19,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-15 15:45:19,544 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:45:19,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-15 15:45:19,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-03-15 15:45:19,544 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) [2022-03-15 15:45:20,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:45:20,912 INFO L93 Difference]: Finished difference Result 77671 states and 509515 transitions. [2022-03-15 15:45:20,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-15 15:45:20,912 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 [2022-03-15 15:45:20,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:45:21,716 INFO L225 Difference]: With dead ends: 77671 [2022-03-15 15:45:21,717 INFO L226 Difference]: Without dead ends: 75977 [2022-03-15 15:45:21,717 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 [2022-03-15 15:45:21,717 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, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 15:45:21,717 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [152 Valid, 365 Invalid, 915 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 909 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 15:45:21,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75977 states. [2022-03-15 15:45:23,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75977 to 56512. [2022-03-15 15:45:24,292 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) [2022-03-15 15:45:24,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56512 states to 56512 states and 372698 transitions. [2022-03-15 15:45:24,673 INFO L78 Accepts]: Start accepts. Automaton has 56512 states and 372698 transitions. Word has length 36 [2022-03-15 15:45:24,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:45:24,673 INFO L470 AbstractCegarLoop]: Abstraction has 56512 states and 372698 transitions. [2022-03-15 15:45:24,673 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) [2022-03-15 15:45:24,673 INFO L276 IsEmpty]: Start isEmpty. Operand 56512 states and 372698 transitions. [2022-03-15 15:45:25,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-03-15 15:45:25,229 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:45:25,229 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] [2022-03-15 15:45:25,245 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0 [2022-03-15 15:45:25,445 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 [2022-03-15 15:45:25,445 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-03-15 15:45:25,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:45:25,445 INFO L85 PathProgramCache]: Analyzing trace with hash 1625307066, now seen corresponding path program 50 times [2022-03-15 15:45:25,445 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:45:25,445 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160090631] [2022-03-15 15:45:25,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:45:25,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:45:25,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:45:25,483 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-03-15 15:45:25,483 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:45:25,483 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160090631] [2022-03-15 15:45:25,484 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160090631] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:45:25,484 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [164962548] [2022-03-15 15:45:25,484 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 15:45:25,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:45:25,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:45:25,485 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) [2022-03-15 15:45:25,513 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2022-03-15 15:45:25,520 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 15:45:25,520 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:45:25,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-15 15:45:25,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:45:25,638 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-03-15 15:45:25,638 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:45:25,714 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-03-15 15:45:25,714 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [164962548] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:45:25,714 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:45:25,714 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 6] total 11 [2022-03-15 15:45:25,715 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805640058] [2022-03-15 15:45:25,715 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:45:25,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-15 15:45:25,715 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:45:25,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-15 15:45:25,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-03-15 15:45:25,715 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) [2022-03-15 15:45:27,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:45:27,238 INFO L93 Difference]: Finished difference Result 83612 states and 539385 transitions. [2022-03-15 15:45:27,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-15 15:45:27,238 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 [2022-03-15 15:45:27,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:45:28,242 INFO L225 Difference]: With dead ends: 83612 [2022-03-15 15:45:28,242 INFO L226 Difference]: Without dead ends: 75985 [2022-03-15 15:45:28,242 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 [2022-03-15 15:45:28,247 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 219 mSDsluCounter, 811 mSDsCounter, 0 mSdLazyCounter, 910 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 15:45:28,247 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [219 Valid, 423 Invalid, 918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 910 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 15:45:28,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75985 states. [2022-03-15 15:45:30,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75985 to 56512. [2022-03-15 15:45:30,494 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) [2022-03-15 15:45:31,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56512 states to 56512 states and 371852 transitions. [2022-03-15 15:45:31,221 INFO L78 Accepts]: Start accepts. Automaton has 56512 states and 371852 transitions. Word has length 36 [2022-03-15 15:45:31,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:45:31,221 INFO L470 AbstractCegarLoop]: Abstraction has 56512 states and 371852 transitions. [2022-03-15 15:45:31,221 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) [2022-03-15 15:45:31,221 INFO L276 IsEmpty]: Start isEmpty. Operand 56512 states and 371852 transitions. [2022-03-15 15:45:31,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-03-15 15:45:31,428 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:45:31,428 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] [2022-03-15 15:45:31,444 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2022-03-15 15:45:31,643 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 [2022-03-15 15:45:31,644 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-03-15 15:45:31,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:45:31,644 INFO L85 PathProgramCache]: Analyzing trace with hash 944655902, now seen corresponding path program 51 times [2022-03-15 15:45:31,644 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:45:31,644 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003487626] [2022-03-15 15:45:31,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:45:31,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:45:31,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:45:31,699 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-03-15 15:45:31,699 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:45:31,700 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003487626] [2022-03-15 15:45:31,700 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003487626] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:45:31,700 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [585261358] [2022-03-15 15:45:31,700 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 15:45:31,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:45:31,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:45:31,701 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) [2022-03-15 15:45:31,702 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2022-03-15 15:45:31,731 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-15 15:45:31,731 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:45:31,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-15 15:45:31,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:45:31,827 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-03-15 15:45:31,827 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:45:31,881 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-03-15 15:45:31,881 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [585261358] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:45:31,881 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:45:31,881 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 3] total 10 [2022-03-15 15:45:31,881 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361686485] [2022-03-15 15:45:31,881 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:45:31,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-15 15:45:31,881 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:45:31,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-15 15:45:31,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-03-15 15:45:31,882 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) [2022-03-15 15:45:34,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:45:34,484 INFO L93 Difference]: Finished difference Result 133141 states and 842938 transitions. [2022-03-15 15:45:34,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-03-15 15:45:34,485 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 [2022-03-15 15:45:34,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:45:35,662 INFO L225 Difference]: With dead ends: 133141 [2022-03-15 15:45:35,663 INFO L226 Difference]: Without dead ends: 119114 [2022-03-15 15:45:35,663 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 [2022-03-15 15:45:35,664 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, 0.8s IncrementalHoareTripleChecker+Time [2022-03-15 15:45:35,664 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [252 Valid, 713 Invalid, 1501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1478 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-15 15:45:35,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119114 states. [2022-03-15 15:45:39,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119114 to 75311. [2022-03-15 15:45:39,285 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) [2022-03-15 15:45:40,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75311 states to 75311 states and 501797 transitions. [2022-03-15 15:45:40,240 INFO L78 Accepts]: Start accepts. Automaton has 75311 states and 501797 transitions. Word has length 36 [2022-03-15 15:45:40,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:45:40,240 INFO L470 AbstractCegarLoop]: Abstraction has 75311 states and 501797 transitions. [2022-03-15 15:45:40,240 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) [2022-03-15 15:45:40,240 INFO L276 IsEmpty]: Start isEmpty. Operand 75311 states and 501797 transitions. [2022-03-15 15:45:40,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-03-15 15:45:40,556 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:45:40,556 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] [2022-03-15 15:45:40,572 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2022-03-15 15:45:40,760 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 [2022-03-15 15:45:40,760 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-03-15 15:45:40,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:45:40,761 INFO L85 PathProgramCache]: Analyzing trace with hash -2142412865, now seen corresponding path program 52 times [2022-03-15 15:45:40,761 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:45:40,761 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759276723] [2022-03-15 15:45:40,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:45:40,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:45:40,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:45:40,812 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-03-15 15:45:40,812 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:45:40,812 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759276723] [2022-03-15 15:45:40,812 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759276723] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:45:40,812 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [825383376] [2022-03-15 15:45:40,812 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 15:45:40,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:45:40,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:45:40,813 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) [2022-03-15 15:45:40,814 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2022-03-15 15:45:40,856 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 15:45:40,856 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:45:40,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-15 15:45:40,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:45:41,007 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-03-15 15:45:41,008 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:45:41,082 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-03-15 15:45:41,082 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [825383376] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:45:41,082 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:45:41,083 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 7] total 12 [2022-03-15 15:45:41,083 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151623495] [2022-03-15 15:45:41,083 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:45:41,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-15 15:45:41,083 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:45:41,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-15 15:45:41,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-03-15 15:45:41,083 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) [2022-03-15 15:45:43,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:45:43,888 INFO L93 Difference]: Finished difference Result 163605 states and 1075759 transitions. [2022-03-15 15:45:43,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-15 15:45:43,888 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 [2022-03-15 15:45:43,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:45:45,437 INFO L225 Difference]: With dead ends: 163605 [2022-03-15 15:45:45,437 INFO L226 Difference]: Without dead ends: 129189 [2022-03-15 15:45:45,437 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 [2022-03-15 15:45:45,437 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 [2022-03-15 15:45:45,437 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] [2022-03-15 15:45:45,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129189 states. [2022-03-15 15:45:49,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129189 to 74165. [2022-03-15 15:45:49,184 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) [2022-03-15 15:45:50,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74165 states to 74165 states and 496517 transitions. [2022-03-15 15:45:50,152 INFO L78 Accepts]: Start accepts. Automaton has 74165 states and 496517 transitions. Word has length 37 [2022-03-15 15:45:50,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:45:50,152 INFO L470 AbstractCegarLoop]: Abstraction has 74165 states and 496517 transitions. [2022-03-15 15:45:50,152 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) [2022-03-15 15:45:50,152 INFO L276 IsEmpty]: Start isEmpty. Operand 74165 states and 496517 transitions. [2022-03-15 15:45:50,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-03-15 15:45:50,754 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:45:50,754 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] [2022-03-15 15:45:50,770 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2022-03-15 15:45:50,970 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 [2022-03-15 15:45:50,970 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-03-15 15:45:50,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:45:50,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1883617541, now seen corresponding path program 53 times [2022-03-15 15:45:50,970 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:45:50,971 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128598560] [2022-03-15 15:45:50,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:45:50,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:45:50,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:45:51,014 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-03-15 15:45:51,014 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:45:51,014 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128598560] [2022-03-15 15:45:51,014 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128598560] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:45:51,014 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1511387457] [2022-03-15 15:45:51,014 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 15:45:51,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:45:51,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:45:51,016 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) [2022-03-15 15:45:51,016 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2022-03-15 15:45:51,046 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-03-15 15:45:51,046 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:45:51,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-15 15:45:51,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:45:51,175 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-03-15 15:45:51,176 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:45:51,252 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-03-15 15:45:51,252 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1511387457] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:45:51,252 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:45:51,252 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 13 [2022-03-15 15:45:51,252 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684064923] [2022-03-15 15:45:51,252 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:45:51,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-15 15:45:51,252 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:45:51,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-15 15:45:51,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-03-15 15:45:51,253 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) [2022-03-15 15:45:54,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:45:54,302 INFO L93 Difference]: Finished difference Result 149831 states and 983713 transitions. [2022-03-15 15:45:54,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-03-15 15:45:54,302 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 [2022-03-15 15:45:54,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:45:55,672 INFO L225 Difference]: With dead ends: 149831 [2022-03-15 15:45:55,672 INFO L226 Difference]: Without dead ends: 110837 [2022-03-15 15:45:55,672 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 [2022-03-15 15:45:55,672 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 [2022-03-15 15:45:55,672 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] [2022-03-15 15:45:55,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110837 states. [2022-03-15 15:45:59,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110837 to 61559. [2022-03-15 15:45:59,489 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) [2022-03-15 15:46:00,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61559 states to 61559 states and 405203 transitions. [2022-03-15 15:46:00,245 INFO L78 Accepts]: Start accepts. Automaton has 61559 states and 405203 transitions. Word has length 37 [2022-03-15 15:46:00,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:46:00,245 INFO L470 AbstractCegarLoop]: Abstraction has 61559 states and 405203 transitions. [2022-03-15 15:46:00,245 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) [2022-03-15 15:46:00,245 INFO L276 IsEmpty]: Start isEmpty. Operand 61559 states and 405203 transitions. [2022-03-15 15:46:00,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-03-15 15:46:00,810 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:46:00,810 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] [2022-03-15 15:46:00,829 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Forceful destruction successful, exit code 0 [2022-03-15 15:46:01,012 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 [2022-03-15 15:46:01,012 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-03-15 15:46:01,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:46:01,013 INFO L85 PathProgramCache]: Analyzing trace with hash 1844070207, now seen corresponding path program 54 times [2022-03-15 15:46:01,013 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:46:01,013 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140017860] [2022-03-15 15:46:01,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:46:01,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:46:01,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:46:01,076 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-03-15 15:46:01,076 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:46:01,076 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140017860] [2022-03-15 15:46:01,076 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140017860] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:46:01,076 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1273936367] [2022-03-15 15:46:01,076 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 15:46:01,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:46:01,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:46:01,077 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) [2022-03-15 15:46:01,078 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2022-03-15 15:46:01,121 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-15 15:46:01,121 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:46:01,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-15 15:46:01,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:46:01,228 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-03-15 15:46:01,228 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:46:01,302 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-03-15 15:46:01,302 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1273936367] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:46:01,302 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:46:01,302 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 4] total 14 [2022-03-15 15:46:01,302 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13660962] [2022-03-15 15:46:01,302 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:46:01,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-15 15:46:01,303 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:46:01,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-15 15:46:01,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2022-03-15 15:46:01,303 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) [2022-03-15 15:46:04,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:46:04,161 INFO L93 Difference]: Finished difference Result 117825 states and 739142 transitions. [2022-03-15 15:46:04,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-03-15 15:46:04,161 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 [2022-03-15 15:46:04,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:46:05,068 INFO L225 Difference]: With dead ends: 117825 [2022-03-15 15:46:05,068 INFO L226 Difference]: Without dead ends: 97872 [2022-03-15 15:46:05,069 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 [2022-03-15 15:46:05,069 INFO L933 BasicCegarLoop]: 104 mSDtfsCounter, 797 mSDsluCounter, 1798 mSDsCounter, 0 mSdLazyCounter, 2442 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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 [2022-03-15 15:46:05,069 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] [2022-03-15 15:46:05,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97872 states. [2022-03-15 15:46:07,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97872 to 66935. [2022-03-15 15:46:07,677 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) [2022-03-15 15:46:08,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66935 states to 66935 states and 435094 transitions. [2022-03-15 15:46:08,462 INFO L78 Accepts]: Start accepts. Automaton has 66935 states and 435094 transitions. Word has length 37 [2022-03-15 15:46:08,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:46:08,462 INFO L470 AbstractCegarLoop]: Abstraction has 66935 states and 435094 transitions. [2022-03-15 15:46:08,462 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) [2022-03-15 15:46:08,462 INFO L276 IsEmpty]: Start isEmpty. Operand 66935 states and 435094 transitions. [2022-03-15 15:46:08,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-03-15 15:46:08,776 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:46:08,776 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] [2022-03-15 15:46:08,792 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2022-03-15 15:46:08,992 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 [2022-03-15 15:46:08,992 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-03-15 15:46:08,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:46:08,993 INFO L85 PathProgramCache]: Analyzing trace with hash 2083853536, now seen corresponding path program 55 times [2022-03-15 15:46:08,993 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:46:08,993 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041754700] [2022-03-15 15:46:08,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:46:08,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:46:09,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:46:09,038 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-03-15 15:46:09,038 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:46:09,038 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041754700] [2022-03-15 15:46:09,038 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041754700] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:46:09,038 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1204767097] [2022-03-15 15:46:09,038 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 15:46:09,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:46:09,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:46:09,044 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) [2022-03-15 15:46:09,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2022-03-15 15:46:09,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:46:09,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-15 15:46:09,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:46:09,165 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-03-15 15:46:09,165 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:46:09,225 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-03-15 15:46:09,225 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1204767097] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:46:09,225 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:46:09,225 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2022-03-15 15:46:09,225 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545899650] [2022-03-15 15:46:09,225 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:46:09,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-15 15:46:09,225 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:46:09,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-15 15:46:09,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-03-15 15:46:09,226 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) [2022-03-15 15:46:10,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:46:10,924 INFO L93 Difference]: Finished difference Result 111728 states and 696117 transitions. [2022-03-15 15:46:10,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-15 15:46:10,924 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 [2022-03-15 15:46:10,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:46:11,831 INFO L225 Difference]: With dead ends: 111728 [2022-03-15 15:46:11,831 INFO L226 Difference]: Without dead ends: 81803 [2022-03-15 15:46:11,831 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 [2022-03-15 15:46:11,831 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 [2022-03-15 15:46:11,831 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] [2022-03-15 15:46:11,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81803 states. [2022-03-15 15:46:14,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81803 to 66935. [2022-03-15 15:46:14,645 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) [2022-03-15 15:46:15,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66935 states to 66935 states and 427716 transitions. [2022-03-15 15:46:15,492 INFO L78 Accepts]: Start accepts. Automaton has 66935 states and 427716 transitions. Word has length 38 [2022-03-15 15:46:15,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:46:15,492 INFO L470 AbstractCegarLoop]: Abstraction has 66935 states and 427716 transitions. [2022-03-15 15:46:15,492 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) [2022-03-15 15:46:15,492 INFO L276 IsEmpty]: Start isEmpty. Operand 66935 states and 427716 transitions. [2022-03-15 15:46:15,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-03-15 15:46:15,735 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:46:15,735 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] [2022-03-15 15:46:15,753 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2022-03-15 15:46:15,951 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 [2022-03-15 15:46:15,951 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-03-15 15:46:15,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:46:15,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1510049182, now seen corresponding path program 56 times [2022-03-15 15:46:15,951 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:46:15,951 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533035257] [2022-03-15 15:46:15,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:46:15,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:46:15,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:46:15,973 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-03-15 15:46:15,973 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:46:15,973 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533035257] [2022-03-15 15:46:15,973 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533035257] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:46:15,973 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [42045622] [2022-03-15 15:46:15,974 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 15:46:15,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:46:15,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:46:15,981 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) [2022-03-15 15:46:15,981 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2022-03-15 15:46:16,033 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 15:46:16,033 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:46:16,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-15 15:46:16,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:46:16,120 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-03-15 15:46:16,120 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:46:16,180 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-03-15 15:46:16,180 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [42045622] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:46:16,180 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:46:16,180 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 7 [2022-03-15 15:46:16,180 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042494293] [2022-03-15 15:46:16,180 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:46:16,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-15 15:46:16,180 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:46:16,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-15 15:46:16,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-15 15:46:16,181 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) [2022-03-15 15:46:18,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:46:18,071 INFO L93 Difference]: Finished difference Result 104231 states and 642732 transitions. [2022-03-15 15:46:18,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-15 15:46:18,071 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 [2022-03-15 15:46:18,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:46:18,931 INFO L225 Difference]: With dead ends: 104231 [2022-03-15 15:46:18,932 INFO L226 Difference]: Without dead ends: 85380 [2022-03-15 15:46:18,932 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 [2022-03-15 15:46:18,932 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 [2022-03-15 15:46:18,933 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] [2022-03-15 15:46:19,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85380 states. [2022-03-15 15:46:21,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85380 to 59557. [2022-03-15 15:46:21,755 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) [2022-03-15 15:46:22,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59557 states to 59557 states and 370991 transitions. [2022-03-15 15:46:22,593 INFO L78 Accepts]: Start accepts. Automaton has 59557 states and 370991 transitions. Word has length 38 [2022-03-15 15:46:22,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:46:22,594 INFO L470 AbstractCegarLoop]: Abstraction has 59557 states and 370991 transitions. [2022-03-15 15:46:22,594 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) [2022-03-15 15:46:22,594 INFO L276 IsEmpty]: Start isEmpty. Operand 59557 states and 370991 transitions. [2022-03-15 15:46:22,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-03-15 15:46:22,843 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:46:22,843 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] [2022-03-15 15:46:22,863 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2022-03-15 15:46:23,059 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 [2022-03-15 15:46:23,059 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-03-15 15:46:23,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:46:23,060 INFO L85 PathProgramCache]: Analyzing trace with hash 973042700, now seen corresponding path program 57 times [2022-03-15 15:46:23,060 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:46:23,060 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870726055] [2022-03-15 15:46:23,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:46:23,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:46:23,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:46:23,100 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-03-15 15:46:23,100 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:46:23,100 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870726055] [2022-03-15 15:46:23,100 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870726055] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:46:23,101 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1455879797] [2022-03-15 15:46:23,101 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 15:46:23,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:46:23,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:46:23,102 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) [2022-03-15 15:46:23,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2022-03-15 15:46:23,134 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-15 15:46:23,135 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:46:23,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-15 15:46:23,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:46:23,226 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-03-15 15:46:23,226 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:46:23,322 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-03-15 15:46:23,322 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1455879797] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:46:23,322 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:46:23,322 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 7 [2022-03-15 15:46:23,322 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841026215] [2022-03-15 15:46:23,322 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:46:23,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-15 15:46:23,323 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:46:23,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-15 15:46:23,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-15 15:46:23,326 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) [2022-03-15 15:46:24,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:46:24,808 INFO L93 Difference]: Finished difference Result 89300 states and 550787 transitions. [2022-03-15 15:46:24,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-15 15:46:24,808 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 [2022-03-15 15:46:24,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:46:25,738 INFO L225 Difference]: With dead ends: 89300 [2022-03-15 15:46:25,739 INFO L226 Difference]: Without dead ends: 74425 [2022-03-15 15:46:25,739 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 [2022-03-15 15:46:25,739 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 53 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 15:46:25,746 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 130 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 15:46:25,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74425 states. [2022-03-15 15:46:27,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74425 to 55868. [2022-03-15 15:46:27,515 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) [2022-03-15 15:46:28,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55868 states to 55868 states and 344473 transitions. [2022-03-15 15:46:28,150 INFO L78 Accepts]: Start accepts. Automaton has 55868 states and 344473 transitions. Word has length 38 [2022-03-15 15:46:28,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:46:28,150 INFO L470 AbstractCegarLoop]: Abstraction has 55868 states and 344473 transitions. [2022-03-15 15:46:28,150 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) [2022-03-15 15:46:28,150 INFO L276 IsEmpty]: Start isEmpty. Operand 55868 states and 344473 transitions. [2022-03-15 15:46:28,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-03-15 15:46:28,342 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:46:28,342 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] [2022-03-15 15:46:28,358 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Forceful destruction successful, exit code 0 [2022-03-15 15:46:28,558 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 [2022-03-15 15:46:28,558 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-03-15 15:46:28,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:46:28,559 INFO L85 PathProgramCache]: Analyzing trace with hash 580015690, now seen corresponding path program 58 times [2022-03-15 15:46:28,559 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:46:28,559 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072790611] [2022-03-15 15:46:28,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:46:28,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:46:28,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:46:28,604 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-03-15 15:46:28,604 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:46:28,604 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072790611] [2022-03-15 15:46:28,604 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072790611] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:46:28,604 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [564700695] [2022-03-15 15:46:28,604 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 15:46:28,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:46:28,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:46:28,605 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) [2022-03-15 15:46:28,606 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2022-03-15 15:46:28,638 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 15:46:28,638 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:46:28,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-15 15:46:28,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:46:28,717 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-03-15 15:46:28,717 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:46:28,780 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-03-15 15:46:28,780 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [564700695] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:46:28,780 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:46:28,780 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2022-03-15 15:46:28,780 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565411128] [2022-03-15 15:46:28,780 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:46:28,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-15 15:46:28,781 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:46:28,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-15 15:46:28,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-03-15 15:46:28,781 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) [2022-03-15 15:46:30,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:46:30,126 INFO L93 Difference]: Finished difference Result 78177 states and 482076 transitions. [2022-03-15 15:46:30,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-15 15:46:30,126 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 [2022-03-15 15:46:30,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:46:30,797 INFO L225 Difference]: With dead ends: 78177 [2022-03-15 15:46:30,798 INFO L226 Difference]: Without dead ends: 70624 [2022-03-15 15:46:30,798 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 [2022-03-15 15:46:30,798 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 [2022-03-15 15:46:30,798 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] [2022-03-15 15:46:30,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70624 states. [2022-03-15 15:46:32,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70624 to 63246. [2022-03-15 15:46:32,981 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) [2022-03-15 15:46:33,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63246 states to 63246 states and 390131 transitions. [2022-03-15 15:46:33,707 INFO L78 Accepts]: Start accepts. Automaton has 63246 states and 390131 transitions. Word has length 38 [2022-03-15 15:46:33,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:46:33,707 INFO L470 AbstractCegarLoop]: Abstraction has 63246 states and 390131 transitions. [2022-03-15 15:46:33,707 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) [2022-03-15 15:46:33,707 INFO L276 IsEmpty]: Start isEmpty. Operand 63246 states and 390131 transitions. [2022-03-15 15:46:34,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-03-15 15:46:34,011 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:46:34,011 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] [2022-03-15 15:46:34,030 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Ended with exit code 0 [2022-03-15 15:46:34,227 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 [2022-03-15 15:46:34,227 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-03-15 15:46:34,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:46:34,228 INFO L85 PathProgramCache]: Analyzing trace with hash 460340691, now seen corresponding path program 59 times [2022-03-15 15:46:34,228 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:46:34,228 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559155465] [2022-03-15 15:46:34,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:46:34,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:46:34,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:46:34,301 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-03-15 15:46:34,302 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:46:34,302 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559155465] [2022-03-15 15:46:34,302 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559155465] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:46:34,302 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1078856254] [2022-03-15 15:46:34,302 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 15:46:34,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:46:34,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:46:34,303 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) [2022-03-15 15:46:34,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2022-03-15 15:46:34,337 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-03-15 15:46:34,337 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:46:34,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-15 15:46:34,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:46:34,715 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-03-15 15:46:34,716 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:46:34,810 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-03-15 15:46:34,810 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1078856254] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:46:34,810 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:46:34,810 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10, 6] total 10 [2022-03-15 15:46:34,810 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458077517] [2022-03-15 15:46:34,810 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:46:34,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-15 15:46:34,810 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:46:34,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-15 15:46:34,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-03-15 15:46:34,811 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) [2022-03-15 15:46:36,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:46:36,550 INFO L93 Difference]: Finished difference Result 105877 states and 653832 transitions. [2022-03-15 15:46:36,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-15 15:46:36,551 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 [2022-03-15 15:46:36,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:46:37,667 INFO L225 Difference]: With dead ends: 105877 [2022-03-15 15:46:37,667 INFO L226 Difference]: Without dead ends: 104850 [2022-03-15 15:46:37,667 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 [2022-03-15 15:46:37,667 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 131 mSDsluCounter, 751 mSDsCounter, 0 mSdLazyCounter, 723 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 15:46:37,669 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [131 Valid, 322 Invalid, 726 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 723 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 15:46:37,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104850 states. [2022-03-15 15:46:40,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104850 to 91505. [2022-03-15 15:46:41,132 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) [2022-03-15 15:46:42,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91505 states to 91505 states and 578328 transitions. [2022-03-15 15:46:42,233 INFO L78 Accepts]: Start accepts. Automaton has 91505 states and 578328 transitions. Word has length 39 [2022-03-15 15:46:42,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:46:42,233 INFO L470 AbstractCegarLoop]: Abstraction has 91505 states and 578328 transitions. [2022-03-15 15:46:42,233 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) [2022-03-15 15:46:42,233 INFO L276 IsEmpty]: Start isEmpty. Operand 91505 states and 578328 transitions. [2022-03-15 15:46:42,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-03-15 15:46:42,655 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:46:42,655 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] [2022-03-15 15:46:42,671 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0 [2022-03-15 15:46:42,869 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 [2022-03-15 15:46:42,869 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-03-15 15:46:42,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:46:42,869 INFO L85 PathProgramCache]: Analyzing trace with hash -884303883, now seen corresponding path program 60 times [2022-03-15 15:46:42,869 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:46:42,869 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223830546] [2022-03-15 15:46:42,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:46:42,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:46:42,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:46:42,923 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-03-15 15:46:42,923 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:46:42,923 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223830546] [2022-03-15 15:46:42,923 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223830546] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:46:42,923 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [321416153] [2022-03-15 15:46:42,923 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 15:46:42,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:46:42,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:46:42,924 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) [2022-03-15 15:46:42,925 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2022-03-15 15:46:42,956 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-15 15:46:42,956 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:46:42,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-15 15:46:42,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:46:43,342 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-03-15 15:46:43,343 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:46:43,381 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-03-15 15:46:43,381 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [321416153] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:46:43,381 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:46:43,381 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 4] total 11 [2022-03-15 15:46:43,381 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302185440] [2022-03-15 15:46:43,381 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:46:43,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-15 15:46:43,381 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:46:43,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-15 15:46:43,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-03-15 15:46:43,382 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) [2022-03-15 15:46:48,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:46:48,653 INFO L93 Difference]: Finished difference Result 260901 states and 1637289 transitions. [2022-03-15 15:46:48,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-03-15 15:46:48,654 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 [2022-03-15 15:46:48,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:46:51,294 INFO L225 Difference]: With dead ends: 260901 [2022-03-15 15:46:51,294 INFO L226 Difference]: Without dead ends: 251186 [2022-03-15 15:46:51,295 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 [2022-03-15 15:46:51,295 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 [2022-03-15 15:46:51,295 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] [2022-03-15 15:46:52,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251186 states. [2022-03-15 15:47:01,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251186 to 166534. [2022-03-15 15:47:01,454 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) [2022-03-15 15:47:03,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166534 states to 166534 states and 1120509 transitions. [2022-03-15 15:47:03,380 INFO L78 Accepts]: Start accepts. Automaton has 166534 states and 1120509 transitions. Word has length 39 [2022-03-15 15:47:03,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:47:03,381 INFO L470 AbstractCegarLoop]: Abstraction has 166534 states and 1120509 transitions. [2022-03-15 15:47:03,381 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) [2022-03-15 15:47:03,381 INFO L276 IsEmpty]: Start isEmpty. Operand 166534 states and 1120509 transitions. [2022-03-15 15:47:04,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-03-15 15:47:04,747 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:47:04,747 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] [2022-03-15 15:47:04,763 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Ended with exit code 0 [2022-03-15 15:47:04,953 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 [2022-03-15 15:47:04,953 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-03-15 15:47:04,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:47:04,953 INFO L85 PathProgramCache]: Analyzing trace with hash -74024473, now seen corresponding path program 61 times [2022-03-15 15:47:04,953 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:47:04,954 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273287165] [2022-03-15 15:47:04,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:47:04,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:47:04,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:47:05,033 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-03-15 15:47:05,034 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:47:05,034 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273287165] [2022-03-15 15:47:05,034 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273287165] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:47:05,034 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [354670679] [2022-03-15 15:47:05,034 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 15:47:05,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:47:05,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:47:05,035 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) [2022-03-15 15:47:05,074 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2022-03-15 15:47:05,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:47:05,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 15 conjunts are in the unsatisfiable core [2022-03-15 15:47:05,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:47:05,426 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-03-15 15:47:05,426 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:47:05,506 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-03-15 15:47:05,506 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [354670679] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:47:05,506 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:47:05,506 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 5] total 14 [2022-03-15 15:47:05,506 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146557359] [2022-03-15 15:47:05,506 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:47:05,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-15 15:47:05,507 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:47:05,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-15 15:47:05,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2022-03-15 15:47:05,507 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) [2022-03-15 15:47:14,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:47:14,313 INFO L93 Difference]: Finished difference Result 389347 states and 2531806 transitions. [2022-03-15 15:47:14,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-03-15 15:47:14,314 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 [2022-03-15 15:47:14,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:47:21,040 INFO L225 Difference]: With dead ends: 389347 [2022-03-15 15:47:21,040 INFO L226 Difference]: Without dead ends: 363171 [2022-03-15 15:47:21,040 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 68 SyntacticMatches, 5 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 854 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=242, Invalid=2728, Unknown=0, NotChecked=0, Total=2970 [2022-03-15 15:47:21,040 INFO L933 BasicCegarLoop]: 248 mSDtfsCounter, 655 mSDsluCounter, 4195 mSDsCounter, 0 mSdLazyCounter, 4113 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s 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, 1.7s IncrementalHoareTripleChecker+Time [2022-03-15 15:47:21,041 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [655 Valid, 2273 Invalid, 4209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 4113 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-03-15 15:47:21,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363171 states. [2022-03-15 15:47:35,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363171 to 216205. [2022-03-15 15:47:36,157 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) [2022-03-15 15:47:39,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216205 states to 216205 states and 1508341 transitions. [2022-03-15 15:47:39,027 INFO L78 Accepts]: Start accepts. Automaton has 216205 states and 1508341 transitions. Word has length 39 [2022-03-15 15:47:39,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:47:39,028 INFO L470 AbstractCegarLoop]: Abstraction has 216205 states and 1508341 transitions. [2022-03-15 15:47:39,028 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) [2022-03-15 15:47:39,028 INFO L276 IsEmpty]: Start isEmpty. Operand 216205 states and 1508341 transitions. [2022-03-15 15:47:41,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-03-15 15:47:41,377 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:47:41,377 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] [2022-03-15 15:47:41,402 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Forceful destruction successful, exit code 0 [2022-03-15 15:47:41,592 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 [2022-03-15 15:47:41,592 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-03-15 15:47:41,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:47:41,592 INFO L85 PathProgramCache]: Analyzing trace with hash -517660847, now seen corresponding path program 62 times [2022-03-15 15:47:41,592 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:47:41,592 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533358288] [2022-03-15 15:47:41,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:47:41,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:47:41,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:47:41,680 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-03-15 15:47:41,680 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:47:41,680 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533358288] [2022-03-15 15:47:41,680 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533358288] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:47:41,680 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1129644158] [2022-03-15 15:47:41,681 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 15:47:41,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:47:41,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:47:41,696 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) [2022-03-15 15:47:41,696 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2022-03-15 15:47:41,734 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 15:47:41,734 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:47:41,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-15 15:47:41,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:47:42,974 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-03-15 15:47:42,974 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:47:43,072 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-03-15 15:47:43,072 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1129644158] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:47:43,072 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:47:43,072 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10, 6] total 13 [2022-03-15 15:47:43,072 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183225261] [2022-03-15 15:47:43,072 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:47:43,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-15 15:47:43,073 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:47:43,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-15 15:47:43,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-03-15 15:47:43,073 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)