/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-Delay.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/unroll-cond-5.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-87fd7473a0bda1db0ad7f77f2116346063730f21-87fd747 [2021-08-21 17:42:52,717 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-21 17:42:52,719 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-21 17:42:52,748 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-21 17:42:52,748 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-21 17:42:52,750 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-21 17:42:52,752 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-21 17:42:52,756 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-21 17:42:52,759 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-21 17:42:52,763 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-21 17:42:52,764 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-21 17:42:52,765 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-21 17:42:52,765 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-21 17:42:52,766 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-21 17:42:52,767 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-21 17:42:52,770 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-21 17:42:52,771 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-21 17:42:52,771 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-21 17:42:52,773 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-21 17:42:52,779 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-21 17:42:52,780 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-21 17:42:52,781 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-21 17:42:52,781 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-21 17:42:52,783 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-21 17:42:52,787 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-21 17:42:52,787 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-21 17:42:52,787 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-21 17:42:52,788 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-21 17:42:52,789 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-21 17:42:52,789 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-21 17:42:52,789 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-21 17:42:52,790 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-21 17:42:52,791 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-21 17:42:52,791 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-21 17:42:52,792 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-21 17:42:52,792 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-21 17:42:52,792 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-21 17:42:52,793 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-21 17:42:52,793 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-21 17:42:52,793 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-21 17:42:52,794 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-21 17:42:52,797 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-Delay.epf [2021-08-21 17:42:52,823 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-21 17:42:52,823 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-21 17:42:52,825 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-21 17:42:52,825 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-21 17:42:52,826 INFO L138 SettingsManager]: * Use SBE=true [2021-08-21 17:42:52,826 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-21 17:42:52,826 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-21 17:42:52,826 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-21 17:42:52,826 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-21 17:42:52,826 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-21 17:42:52,827 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-21 17:42:52,827 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-21 17:42:52,827 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-21 17:42:52,827 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-21 17:42:52,827 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-21 17:42:52,827 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-21 17:42:52,827 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-21 17:42:52,827 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-21 17:42:52,827 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-21 17:42:52,828 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-21 17:42:52,828 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-21 17:42:52,828 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-21 17:42:52,828 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-21 17:42:52,828 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-21 17:42:52,828 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-21 17:42:52,828 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-21 17:42:52,828 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-21 17:42:52,828 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-21 17:42:52,828 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-21 17:42:52,829 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-08-21 17:42:52,829 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-21 17:42:53,062 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-21 17:42:53,086 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-21 17:42:53,088 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-21 17:42:53,089 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-08-21 17:42:53,090 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-08-21 17:42:53,090 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/unroll-cond-5.wvr.bpl [2021-08-21 17:42:53,091 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/unroll-cond-5.wvr.bpl' [2021-08-21 17:42:53,117 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-21 17:42:53,118 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-08-21 17:42:53,119 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-21 17:42:53,119 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-21 17:42:53,119 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-21 17:42:53,128 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "unroll-cond-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 05:42:53" (1/1) ... [2021-08-21 17:42:53,134 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "unroll-cond-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 05:42:53" (1/1) ... [2021-08-21 17:42:53,139 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-21 17:42:53,140 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-21 17:42:53,140 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-21 17:42:53,140 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-21 17:42:53,145 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "unroll-cond-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 05:42:53" (1/1) ... [2021-08-21 17:42:53,146 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "unroll-cond-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 05:42:53" (1/1) ... [2021-08-21 17:42:53,146 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "unroll-cond-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 05:42:53" (1/1) ... [2021-08-21 17:42:53,146 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "unroll-cond-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 05:42:53" (1/1) ... [2021-08-21 17:42:53,152 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "unroll-cond-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 05:42:53" (1/1) ... [2021-08-21 17:42:53,154 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "unroll-cond-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 05:42:53" (1/1) ... [2021-08-21 17:42:53,157 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "unroll-cond-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 05:42:53" (1/1) ... [2021-08-21 17:42:53,158 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-21 17:42:53,159 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-21 17:42:53,159 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-21 17:42:53,159 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-21 17:42:53,160 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "unroll-cond-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 05:42:53" (1/1) ... [2021-08-21 17:42:53,164 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-21 17:42:53,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 17:42:53,186 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) [2021-08-21 17:42:53,188 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 [2021-08-21 17:42:53,209 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-08-21 17:42:53,209 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-08-21 17:42:53,209 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-08-21 17:42:53,209 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-08-21 17:42:53,209 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-08-21 17:42:53,210 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-08-21 17:42:53,210 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-08-21 17:42:53,210 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-21 17:42:53,210 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-21 17:42:53,210 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-08-21 17:42:53,488 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-21 17:42:53,488 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-08-21 17:42:53,488 WARN L329 CfgBuilder]: Unexpected successor node of atomic block begin: thread1EXIT is neither atomic block end nor error location. [2021-08-21 17:42:53,490 INFO L202 PluginConnector]: Adding new model unroll-cond-5.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 05:42:53 BoogieIcfgContainer [2021-08-21 17:42:53,490 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-21 17:42:53,494 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-21 17:42:53,494 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-21 17:42:53,496 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-21 17:42:53,496 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "unroll-cond-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 05:42:53" (1/2) ... [2021-08-21 17:42:53,497 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1688578d and model type unroll-cond-5.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 05:42:53, skipping insertion in model container [2021-08-21 17:42:53,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "unroll-cond-5.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 05:42:53" (2/2) ... [2021-08-21 17:42:53,498 INFO L111 eAbstractionObserver]: Analyzing ICFG unroll-cond-5.wvr.bpl [2021-08-21 17:42:53,501 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-08-21 17:42:53,501 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-21 17:42:53,501 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-21 17:42:53,501 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-21 17:42:53,525 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-08-21 17:42:53,553 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-21 17:42:53,562 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, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-21 17:42:53,563 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-08-21 17:42:53,635 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 15 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:42:53,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-21 17:42:53,646 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:42:53,647 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 17:42:53,647 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 17:42:53,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:42:53,650 INFO L82 PathProgramCache]: Analyzing trace with hash -2038593608, now seen corresponding path program 1 times [2021-08-21 17:42:53,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:42:53,656 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803420598] [2021-08-21 17:42:53,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:42:53,656 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:42:53,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:42:53,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 17:42:53,828 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:42:53,828 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803420598] [2021-08-21 17:42:53,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803420598] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:42:53,829 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:42:53,829 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-21 17:42:53,830 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583486730] [2021-08-21 17:42:53,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-21 17:42:53,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:42:53,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-21 17:42:53,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-21 17:42:53,844 INFO L87 Difference]: Start difference. First operand has 16 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 15 states have internal predecessors, (19), 0 states have call successors, (0), 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 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:42:53,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:42:53,881 INFO L93 Difference]: Finished difference Result 26 states and 32 transitions. [2021-08-21 17:42:53,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-21 17:42:53,883 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-08-21 17:42:53,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:42:53,889 INFO L225 Difference]: With dead ends: 26 [2021-08-21 17:42:53,889 INFO L226 Difference]: Without dead ends: 13 [2021-08-21 17:42:53,890 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 26.1ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-08-21 17:42:53,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-08-21 17:42:53,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-08-21 17:42:53,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.5) internal successors, (18), 12 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:42:53,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 18 transitions. [2021-08-21 17:42:53,911 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 18 transitions. Word has length 10 [2021-08-21 17:42:53,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:42:53,911 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 18 transitions. [2021-08-21 17:42:53,911 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:42:53,912 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 18 transitions. [2021-08-21 17:42:53,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-21 17:42:53,912 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:42:53,912 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 17:42:53,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-21 17:42:53,912 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-21 17:42:53,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:42:53,914 INFO L82 PathProgramCache]: Analyzing trace with hash 275153163, now seen corresponding path program 1 times [2021-08-21 17:42:53,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:42:53,914 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434998608] [2021-08-21 17:42:53,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:42:53,915 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:42:53,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:42:55,528 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 17:42:55,529 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:42:55,529 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434998608] [2021-08-21 17:42:55,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434998608] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 17:42:55,530 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [834314299] [2021-08-21 17:42:55,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:42:55,531 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 17:42:55,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 17:42:55,540 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) [2021-08-21 17:42:55,575 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-21 17:42:55,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:42:55,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 16 conjunts are in the unsatisfiable core [2021-08-21 17:42:55,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2021-08-21 17:57:40,775 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT [2021-08-21 17:57:40,779 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-08-21 17:57:40,780 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-08-21 17:57:40,797 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-08-21 17:57:40,976 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 17:57:40,976 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was analyzing trace of length 12 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ATOM-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∨-2-1 context. [2021-08-21 17:57:40,978 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION [2021-08-21 17:57:40,979 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION [2021-08-21 17:57:40,982 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-08-21 17:57:40,982 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-21 17:57:40,983 INFO L202 PluginConnector]: Adding new model unroll-cond-5.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 05:57:40 BasicIcfg [2021-08-21 17:57:40,985 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-21 17:57:40,987 INFO L168 Benchmark]: Toolchain (without parser) took 887867.62 ms. Allocated memory was 186.6 MB in the beginning and 5.8 GB in the end (delta: 5.6 GB). Free memory was 166.4 MB in the beginning and 4.9 GB in the end (delta: -4.8 GB). Peak memory consumption was 3.8 GB. Max. memory is 8.0 GB. [2021-08-21 17:57:40,990 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.12 ms. Allocated memory is still 186.6 MB. Free memory is still 167.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-08-21 17:57:40,991 INFO L168 Benchmark]: Boogie Procedure Inliner took 20.19 ms. Allocated memory is still 186.6 MB. Free memory was 166.3 MB in the beginning and 164.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-08-21 17:57:40,992 INFO L168 Benchmark]: Boogie Preprocessor took 18.00 ms. Allocated memory is still 186.6 MB. Free memory was 164.8 MB in the beginning and 163.8 MB in the end (delta: 945.8 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-08-21 17:57:40,993 INFO L168 Benchmark]: RCFGBuilder took 330.98 ms. Allocated memory is still 186.6 MB. Free memory was 163.8 MB in the beginning and 141.0 MB in the end (delta: 22.9 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2021-08-21 17:57:40,994 INFO L168 Benchmark]: TraceAbstraction took 887491.52 ms. Allocated memory was 186.6 MB in the beginning and 5.8 GB in the end (delta: 5.6 GB). Free memory was 140.6 MB in the beginning and 4.9 GB in the end (delta: -4.8 GB). Peak memory consumption was 3.8 GB. Max. memory is 8.0 GB. [2021-08-21 17:57:40,998 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.12 ms. Allocated memory is still 186.6 MB. Free memory is still 167.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 20.19 ms. Allocated memory is still 186.6 MB. Free memory was 166.3 MB in the beginning and 164.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 18.00 ms. Allocated memory is still 186.6 MB. Free memory was 164.8 MB in the beginning and 163.8 MB in the end (delta: 945.8 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 330.98 ms. Allocated memory is still 186.6 MB. Free memory was 163.8 MB in the beginning and 141.0 MB in the end (delta: 22.9 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 887491.52 ms. Allocated memory was 186.6 MB in the beginning and 5.8 GB in the end (delta: 5.6 GB). Free memory was 140.6 MB in the beginning and 4.9 GB in the end (delta: -4.8 GB). Peak memory consumption was 3.8 GB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 15, positive: 11, positive conditional: 11, positive unconditional: 0, negative: 4, negative conditional: 4, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 11, positive: 11, positive conditional: 0, positive unconditional: 11, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 11, positive: 11, positive conditional: 0, positive unconditional: 11, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 11, positive: 11, positive conditional: 0, positive unconditional: 11, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 11, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 11, unknown conditional: 0, unknown unconditional: 11] , Statistics on independence cache: Total cache size (in pairs): 11, Positive cache size: 11, Positive conditional cache size: 0, Positive unconditional cache size: 11, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Independence queries for same thread: 4 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 69]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while BasicCegarLoop was analyzing trace of length 12 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ATOM-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∨-2-1 context. - TimeoutResultAtElement [Line: 64]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 12 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ATOM-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∨-2-1 context. - TimeoutResultAtElement [Line: 64]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 12 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ATOM-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∨-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 22 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 887429.0ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 12.8ms, AutomataDifference: 56.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 70.9ms, PartialOrderReductionTime: 57.6ms, HoareTripleCheckerStatistics: 9 SDtfs, 10 SDslu, 8 SDs, 0 SdLazy, 10 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 11.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 26.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=0, InterpolantAutomatonStates: 4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 12.3ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 2.4ms SsaConstructionTime, 30.1ms SatisfiabilityAnalysisTime, 102.6ms InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 41 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown