/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-MCRwithDepranks.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/bench/exp1x3.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-?-bc289cb [2022-01-29 07:05:40,519 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-29 07:05:40,520 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-29 07:05:40,551 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-29 07:05:40,597 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-29 07:05:40,598 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-29 07:05:40,599 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-29 07:05:40,605 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-MCRwithDepranks.epf [2022-01-29 07:05:40,639 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-29 07:05:40,639 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-29 07:05:40,639 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-29 07:05:40,640 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-29 07:05:40,640 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-29 07:05:40,640 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-29 07:05:40,641 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-29 07:05:40,641 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-29 07:05:40,641 INFO L138 SettingsManager]: * Use SBE=true [2022-01-29 07:05:40,641 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-29 07:05:40,642 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-29 07:05:40,642 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-29 07:05:40,642 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-29 07:05:40,642 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-29 07:05:40,642 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-29 07:05:40,642 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-29 07:05:40,642 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-29 07:05:40,643 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-29 07:05:40,643 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-29 07:05:40,643 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-29 07:05:40,643 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-29 07:05:40,643 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-29 07:05:40,643 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-29 07:05:40,643 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-29 07:05:40,644 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-29 07:05:40,644 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-29 07:05:40,644 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-29 07:05:40,644 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-29 07:05:40,644 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-29 07:05:40,644 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-29 07:05:40,645 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-29 07:05:40,645 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-29 07:05:40,645 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-01-29 07:05:40,645 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-29 07:05:40,645 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=MCR_WITH_DEPRANKS [2022-01-29 07:05:40,645 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-29 07:05:40,876 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-29 07:05:40,891 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-29 07:05:40,893 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-29 07:05:40,893 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-01-29 07:05:40,894 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-01-29 07:05:40,895 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/bench/exp1x3.wvr.bpl [2022-01-29 07:05:40,896 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/bench/exp1x3.wvr.bpl' [2022-01-29 07:05:40,920 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-29 07:05:40,921 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-29 07:05:40,924 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-29 07:05:40,924 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-29 07:05:40,924 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-29 07:05:40,935 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "exp1x3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.01 07:05:40" (1/1) ... [2022-01-29 07:05:40,940 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "exp1x3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.01 07:05:40" (1/1) ... [2022-01-29 07:05:40,945 INFO L137 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-01-29 07:05:40,946 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-29 07:05:40,947 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-29 07:05:40,947 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-29 07:05:40,947 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-29 07:05:40,952 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "exp1x3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.01 07:05:40" (1/1) ... [2022-01-29 07:05:40,952 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "exp1x3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.01 07:05:40" (1/1) ... [2022-01-29 07:05:40,953 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "exp1x3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.01 07:05:40" (1/1) ... [2022-01-29 07:05:40,953 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "exp1x3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.01 07:05:40" (1/1) ... [2022-01-29 07:05:40,955 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "exp1x3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.01 07:05:40" (1/1) ... [2022-01-29 07:05:40,957 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "exp1x3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.01 07:05:40" (1/1) ... [2022-01-29 07:05:40,957 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "exp1x3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.01 07:05:40" (1/1) ... [2022-01-29 07:05:40,958 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-29 07:05:40,958 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-29 07:05:40,958 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-29 07:05:40,959 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-29 07:05:40,960 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "exp1x3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.01 07:05:40" (1/1) ... [2022-01-29 07:05:40,965 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-29 07:05:40,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-29 07:05:40,985 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-29 07:05:40,988 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-29 07:05:41,016 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2022-01-29 07:05:41,017 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-01-29 07:05:41,017 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-01-29 07:05:41,017 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2022-01-29 07:05:41,017 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-01-29 07:05:41,017 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-01-29 07:05:41,018 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-01-29 07:05:41,018 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-29 07:05:41,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-29 07:05:41,018 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-29 07:05:41,051 INFO L234 CfgBuilder]: Building ICFG [2022-01-29 07:05:41,052 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-29 07:05:41,139 INFO L275 CfgBuilder]: Performing block encoding [2022-01-29 07:05:41,150 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-29 07:05:41,151 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-29 07:05:41,155 INFO L202 PluginConnector]: Adding new model exp1x3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.01 07:05:41 BoogieIcfgContainer [2022-01-29 07:05:41,157 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-29 07:05:41,160 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-29 07:05:41,160 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-29 07:05:41,163 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-29 07:05:41,163 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "exp1x3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.01 07:05:40" (1/2) ... [2022-01-29 07:05:41,164 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2515497f and model type exp1x3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.01 07:05:41, skipping insertion in model container [2022-01-29 07:05:41,164 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "exp1x3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.01 07:05:41" (2/2) ... [2022-01-29 07:05:41,166 INFO L111 eAbstractionObserver]: Analyzing ICFG exp1x3.wvr.bpl [2022-01-29 07:05:41,170 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-01-29 07:05:41,170 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-29 07:05:41,170 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-29 07:05:41,170 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-29 07:05:41,215 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-01-29 07:05:41,264 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-01-29 07:05:41,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-29 07:05:41,274 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-01-29 07:05:41,302 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2022-01-29 07:05:41,320 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-29 07:05:41,340 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=PARTIAL_ORDER_FA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-29 07:05:41,340 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-01-29 07:05:41,430 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-29 07:05:41,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-29 07:05:41,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1850875559, now seen corresponding path program 1 times [2022-01-29 07:05:41,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-29 07:05:41,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205236870] [2022-01-29 07:05:41,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-29 07:05:41,451 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-29 07:05:41,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-29 07:05:41,658 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-29 07:05:41,659 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-29 07:05:41,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205236870] [2022-01-29 07:05:41,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205236870] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-29 07:05:41,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [918249384] [2022-01-29 07:05:41,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-29 07:05:41,660 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-29 07:05:41,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-29 07:05:41,671 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-29 07:05:41,676 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-29 07:05:41,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-29 07:05:41,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-29 07:05:41,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-29 07:05:42,079 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-29 07:05:42,079 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-29 07:05:42,239 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-29 07:05:42,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [918249384] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-29 07:05:42,240 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-29 07:05:42,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 6 [2022-01-29 07:05:42,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444946428] [2022-01-29 07:05:42,243 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-29 07:05:42,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-29 07:05:42,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-29 07:05:42,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-29 07:05:42,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-29 07:05:42,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-29 07:05:42,280 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-01-29 07:05:42,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-29 07:05:42,282 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-01-29 07:05:42,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-29 07:05:42,410 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-29 07:05:42,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-01-29 07:05:42,604 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-29 07:05:42,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-29 07:05:42,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1640087063, now seen corresponding path program 2 times [2022-01-29 07:05:42,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-29 07:05:42,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783205162] [2022-01-29 07:05:42,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-29 07:05:42,606 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-29 07:05:42,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-29 07:05:42,691 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-29 07:05:42,691 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-29 07:05:42,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783205162] [2022-01-29 07:05:42,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783205162] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-29 07:05:42,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1278000024] [2022-01-29 07:05:42,691 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-29 07:05:42,692 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-29 07:05:42,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-29 07:05:42,693 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-29 07:05:42,693 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-29 07:05:42,722 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-29 07:05:42,722 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-29 07:05:42,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-29 07:05:42,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-29 07:05:42,833 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-29 07:05:42,833 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-29 07:05:42,893 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-29 07:05:42,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1278000024] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-29 07:05:42,894 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-29 07:05:42,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2022-01-29 07:05:42,894 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751285725] [2022-01-29 07:05:42,894 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-29 07:05:42,896 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-29 07:05:42,896 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-29 07:05:42,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-29 07:05:42,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-01-29 07:05:42,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-29 07:05:42,898 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-01-29 07:05:42,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.5) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-29 07:05:42,898 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2022-01-29 07:05:42,899 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-01-29 07:05:43,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-29 07:05:43,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-29 07:05:43,261 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-29 07:05:43,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-29 07:05:43,444 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-29 07:05:43,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-29 07:05:43,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1330052633, now seen corresponding path program 3 times [2022-01-29 07:05:43,445 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-29 07:05:43,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989168490] [2022-01-29 07:05:43,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-29 07:05:43,445 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-29 07:05:43,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-29 07:05:43,556 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-29 07:05:43,556 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-29 07:05:43,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989168490] [2022-01-29 07:05:43,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989168490] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-29 07:05:43,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [759030830] [2022-01-29 07:05:43,557 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-29 07:05:43,557 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-29 07:05:43,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-29 07:05:43,558 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-29 07:05:43,581 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-29 07:05:43,582 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-01-29 07:05:43,582 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-29 07:05:43,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-29 07:05:43,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-29 07:05:43,914 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-29 07:05:43,915 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-29 07:05:44,023 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-29 07:05:44,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [759030830] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-29 07:05:44,023 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-29 07:05:44,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 5] total 8 [2022-01-29 07:05:44,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502125286] [2022-01-29 07:05:44,024 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-29 07:05:44,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-29 07:05:44,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-29 07:05:44,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-29 07:05:44,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-01-29 07:05:44,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-29 07:05:44,025 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-01-29 07:05:44,025 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 8 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-29 07:05:44,025 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2022-01-29 07:05:44,026 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2022-01-29 07:05:44,026 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-01-29 07:05:44,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-29 07:05:44,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-29 07:05:44,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-29 07:05:44,138 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-01-29 07:05:44,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-29 07:05:44,328 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-29 07:05:44,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-29 07:05:44,328 INFO L85 PathProgramCache]: Analyzing trace with hash 75647959, now seen corresponding path program 4 times [2022-01-29 07:05:44,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-29 07:05:44,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656856763] [2022-01-29 07:05:44,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-29 07:05:44,329 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-29 07:05:44,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-29 07:05:44,402 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-29 07:05:44,403 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-29 07:05:44,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656856763] [2022-01-29 07:05:44,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656856763] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-29 07:05:44,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1846882634] [2022-01-29 07:05:44,403 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-29 07:05:44,403 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-29 07:05:44,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-29 07:05:44,405 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-29 07:05:44,406 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-29 07:05:44,437 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-29 07:05:44,437 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-29 07:05:44,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-29 07:05:44,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-29 07:05:44,577 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-29 07:05:44,577 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-29 07:05:44,660 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-29 07:05:44,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1846882634] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-29 07:05:44,661 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-29 07:05:44,661 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2022-01-29 07:05:44,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693521161] [2022-01-29 07:05:44,661 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-29 07:05:44,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-29 07:05:44,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-29 07:05:44,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-29 07:05:44,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-01-29 07:05:44,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-29 07:05:44,662 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-01-29 07:05:44,663 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 12 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-29 07:05:44,663 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2022-01-29 07:05:44,663 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2022-01-29 07:05:44,663 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2022-01-29 07:05:44,663 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-01-29 07:05:45,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-29 07:05:45,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-29 07:05:45,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-29 07:05:45,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-29 07:05:45,177 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-01-29 07:05:45,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-29 07:05:45,353 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-29 07:05:45,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-29 07:05:45,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1142627289, now seen corresponding path program 5 times [2022-01-29 07:05:45,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-29 07:05:45,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15724100] [2022-01-29 07:05:45,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-29 07:05:45,354 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-29 07:05:45,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-29 07:05:45,456 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-29 07:05:45,457 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-29 07:05:45,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15724100] [2022-01-29 07:05:45,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15724100] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-29 07:05:45,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2144046402] [2022-01-29 07:05:45,457 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-29 07:05:45,457 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-29 07:05:45,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-29 07:05:45,459 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-29 07:05:45,460 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-29 07:05:45,482 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-01-29 07:05:45,483 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-29 07:05:45,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-29 07:05:45,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2022-01-29 07:20:00,957 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-01-29 07:20:00,957 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-01-29 07:20:00,957 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-01-29 07:20:01,305 WARN L243 SmtUtils]: Removed 1 from assertion stack [2022-01-29 07:20:01,306 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (2 of 3 remaining) [2022-01-29 07:20:01,323 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-01-29 07:20:01,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-29 07:20:01,507 WARN L594 AbstractCegarLoop]: Verification canceled: while PartialOrderCegarLoop was analyzing trace of length 28 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-879-1 term,while PolyPacSimplificationTermWalker was simplifying 879 xjuncts wrt. a ATOM-1 context. [2022-01-29 07:20:01,509 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-01-29 07:20:01,509 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-01-29 07:20:01,522 INFO L732 BasicCegarLoop]: Path program histogram: [5] [2022-01-29 07:20:01,526 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-29 07:20:01,526 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-29 07:20:01,528 INFO L202 PluginConnector]: Adding new model exp1x3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.01 07:20:01 BasicIcfg [2022-01-29 07:20:01,528 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-29 07:20:01,529 INFO L158 Benchmark]: Toolchain (without parser) took 860607.21ms. Allocated memory was 186.6MB in the beginning and 1.4GB in the end (delta: 1.2GB). Free memory was 144.8MB in the beginning and 1.3GB in the end (delta: -1.2GB). Peak memory consumption was 1.4GB. Max. memory is 8.0GB. [2022-01-29 07:20:01,529 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.11ms. Allocated memory is still 186.6MB. Free memory is still 145.9MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-29 07:20:01,529 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.33ms. Allocated memory is still 186.6MB. Free memory was 144.8MB in the beginning and 143.2MB in the end (delta: 1.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-01-29 07:20:01,530 INFO L158 Benchmark]: Boogie Preprocessor took 10.96ms. Allocated memory is still 186.6MB. Free memory was 143.2MB in the beginning and 142.3MB in the end (delta: 920.9kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-29 07:20:01,530 INFO L158 Benchmark]: RCFGBuilder took 198.50ms. Allocated memory is still 186.6MB. Free memory was 142.3MB in the beginning and 134.0MB in the end (delta: 8.3MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2022-01-29 07:20:01,531 INFO L158 Benchmark]: TraceAbstraction took 860368.23ms. Allocated memory was 186.6MB in the beginning and 1.4GB in the end (delta: 1.2GB). Free memory was 133.5MB in the beginning and 1.3GB in the end (delta: -1.2GB). Peak memory consumption was 1.4GB. Max. memory is 8.0GB. [2022-01-29 07:20:01,532 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 0.11ms. Allocated memory is still 186.6MB. Free memory is still 145.9MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 22.33ms. Allocated memory is still 186.6MB. Free memory was 144.8MB in the beginning and 143.2MB in the end (delta: 1.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 10.96ms. Allocated memory is still 186.6MB. Free memory was 143.2MB in the beginning and 142.3MB in the end (delta: 920.9kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 198.50ms. Allocated memory is still 186.6MB. Free memory was 142.3MB in the beginning and 134.0MB in the end (delta: 8.3MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * TraceAbstraction took 860368.23ms. Allocated memory was 186.6MB in the beginning and 1.4GB in the end (delta: 1.2GB). Free memory was 133.5MB in the beginning and 1.3GB in the end (delta: -1.2GB). Peak memory consumption was 1.4GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.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] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.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] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.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] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.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] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1, Independence queries for same thread: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 38]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while PartialOrderCegarLoop was analyzing trace of length 28 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-879-1 term,while PolyPacSimplificationTermWalker was simplifying 879 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 33]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while PartialOrderCegarLoop was analyzing trace of length 28 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-879-1 term,while PolyPacSimplificationTermWalker was simplifying 879 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 33]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while PartialOrderCegarLoop was analyzing trace of length 28 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-879-1 term,while PolyPacSimplificationTermWalker was simplifying 879 xjuncts wrt. a ATOM-1 context. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 28 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 860.3s, OverallIterations: 5, TraceHistogramMax: 0, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 1.1s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 54, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 176 NumberOfCodeBlocks, 176 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 252 ConstructedInterpolants, 0 QuantifiedInterpolants, 2064 SizeOfPredicates, 12 NumberOfNonLiveVariables, 158 ConjunctsInSsa, 42 ConjunctsInUnsatCore, 12 InterpolantComputations, 0 PerfectInterpolantSequences, 6/192 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