/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-POR-NewStatesSleepPersistentFixedOrder-Uncond-NoLbe-Random521.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/POPL2022/incr-decr25.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2ce48c3f3f8970e6bfb7f04ced506932607c57fe-2ce48c3 [2021-10-22 20:10:57,705 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-22 20:10:57,707 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-22 20:10:57,767 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-22 20:10:57,768 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-22 20:10:57,770 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-22 20:10:57,772 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-22 20:10:57,777 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-22 20:10:57,779 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-22 20:10:57,783 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-22 20:10:57,784 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-22 20:10:57,785 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-22 20:10:57,785 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-22 20:10:57,787 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-22 20:10:57,788 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-22 20:10:57,791 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-22 20:10:57,791 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-22 20:10:57,792 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-22 20:10:57,794 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-22 20:10:57,798 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-22 20:10:57,799 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-22 20:10:57,799 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-22 20:10:57,801 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-22 20:10:57,801 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-22 20:10:57,806 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-22 20:10:57,806 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-22 20:10:57,807 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-22 20:10:57,808 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-22 20:10:57,808 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-22 20:10:57,809 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-22 20:10:57,809 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-22 20:10:57,809 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-22 20:10:57,810 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-22 20:10:57,811 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-22 20:10:57,812 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-22 20:10:57,812 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-22 20:10:57,812 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-22 20:10:57,813 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-22 20:10:57,813 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-22 20:10:57,813 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-22 20:10:57,814 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-22 20:10:57,815 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-POR-NewStatesSleepPersistentFixedOrder-Uncond-NoLbe-Random521.epf [2021-10-22 20:10:57,846 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-22 20:10:57,847 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-22 20:10:57,847 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-22 20:10:57,847 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-22 20:10:57,848 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-22 20:10:57,848 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-22 20:10:57,848 INFO L138 SettingsManager]: * Use SBE=true [2021-10-22 20:10:57,848 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-22 20:10:57,848 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-22 20:10:57,849 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-22 20:10:57,849 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-22 20:10:57,849 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-22 20:10:57,849 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-22 20:10:57,849 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-22 20:10:57,849 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-22 20:10:57,850 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-22 20:10:57,850 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-22 20:10:57,850 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-22 20:10:57,850 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-22 20:10:57,850 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-22 20:10:57,850 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-22 20:10:57,850 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-10-22 20:10:57,850 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-22 20:10:57,850 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-22 20:10:57,850 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-22 20:10:57,850 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-22 20:10:57,851 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-22 20:10:57,851 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-22 20:10:57,851 INFO L138 SettingsManager]: * DFS Order used in POR=RANDOM [2021-10-22 20:10:57,851 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-22 20:10:57,851 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-22 20:10:57,851 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-10-22 20:10:57,851 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-22 20:10:57,851 INFO L138 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2021-10-22 20:10:57,851 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2021-10-22 20:10:57,851 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-22 20:10:57,852 INFO L138 SettingsManager]: * Random seed used by POR DFS order=521 [2021-10-22 20:10:57,852 INFO L138 SettingsManager]: * Use conditional POR in concurrent analysis=false 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-22 20:10:58,064 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-22 20:10:58,081 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-22 20:10:58,083 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-22 20:10:58,084 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-10-22 20:10:58,086 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-10-22 20:10:58,086 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/incr-decr25.bpl [2021-10-22 20:10:58,087 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/incr-decr25.bpl' [2021-10-22 20:10:58,115 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-22 20:10:58,117 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-10-22 20:10:58,117 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-22 20:10:58,118 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-22 20:10:58,118 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-22 20:10:58,126 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "incr-decr25.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.10 08:10:58" (1/1) ... [2021-10-22 20:10:58,131 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "incr-decr25.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.10 08:10:58" (1/1) ... [2021-10-22 20:10:58,138 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-22 20:10:58,139 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-22 20:10:58,139 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-22 20:10:58,139 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-22 20:10:58,145 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "incr-decr25.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.10 08:10:58" (1/1) ... [2021-10-22 20:10:58,145 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "incr-decr25.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.10 08:10:58" (1/1) ... [2021-10-22 20:10:58,145 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "incr-decr25.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.10 08:10:58" (1/1) ... [2021-10-22 20:10:58,145 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "incr-decr25.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.10 08:10:58" (1/1) ... [2021-10-22 20:10:58,151 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "incr-decr25.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.10 08:10:58" (1/1) ... [2021-10-22 20:10:58,153 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "incr-decr25.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.10 08:10:58" (1/1) ... [2021-10-22 20:10:58,153 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "incr-decr25.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.10 08:10:58" (1/1) ... [2021-10-22 20:10:58,154 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-22 20:10:58,155 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-22 20:10:58,155 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-22 20:10:58,155 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-22 20:10:58,167 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "incr-decr25.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.10 08:10:58" (1/1) ... [2021-10-22 20:10:58,173 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-22 20:10:58,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-22 20:10:58,191 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) [2021-10-22 20:10:58,199 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 [2021-10-22 20:10:58,224 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-10-22 20:10:58,224 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-22 20:10:58,224 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-22 20:10:58,224 INFO L124 BoogieDeclarations]: Specification and implementation of procedure Thread given in one single declaration [2021-10-22 20:10:58,224 INFO L130 BoogieDeclarations]: Found specification of procedure Thread [2021-10-22 20:10:58,225 INFO L138 BoogieDeclarations]: Found implementation of procedure Thread [2021-10-22 20:10:58,225 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-22 20:10:58,443 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-22 20:10:58,443 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-10-22 20:10:58,445 INFO L202 PluginConnector]: Adding new model incr-decr25.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:10:58 BoogieIcfgContainer [2021-10-22 20:10:58,445 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-22 20:10:58,446 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-22 20:10:58,446 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-22 20:10:58,454 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-22 20:10:58,454 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "incr-decr25.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.10 08:10:58" (1/2) ... [2021-10-22 20:10:58,455 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c1cfdd1 and model type incr-decr25.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:10:58, skipping insertion in model container [2021-10-22 20:10:58,455 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "incr-decr25.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:10:58" (2/2) ... [2021-10-22 20:10:58,457 INFO L111 eAbstractionObserver]: Analyzing ICFG incr-decr25.bpl [2021-10-22 20:10:58,460 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-22 20:10:58,460 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-22 20:10:58,460 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-22 20:10:58,461 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-22 20:10:58,952 INFO L148 ThreadInstanceAdder]: Constructed 25 joinOtherThreadTransitions. [2021-10-22 20:10:58,994 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-10-22 20:10:58,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-22 20:10:58,998 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) [2021-10-22 20:10:58,999 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 [2021-10-22 20:10:59,022 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2021-10-22 20:10:59,026 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=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 [2021-10-22 20:10:59,026 INFO L340 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2021-10-22 20:11:26,972 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 22 more)] === [2021-10-22 20:11:26,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-22 20:11:26,990 INFO L82 PathProgramCache]: Analyzing trace with hash 1607045807, now seen corresponding path program 1 times [2021-10-22 20:11:26,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-22 20:11:26,997 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096918736] [2021-10-22 20:11:26,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-22 20:11:26,997 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-22 20:11:27,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-22 20:11:27,592 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-22 20:11:27,593 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-22 20:11:27,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096918736] [2021-10-22 20:11:27,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096918736] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-22 20:11:27,594 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-22 20:11:27,594 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-22 20:11:27,595 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201823180] [2021-10-22 20:11:27,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-22 20:11:27,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-22 20:11:27,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-22 20:11:27,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-22 20:11:27,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-22 20:11:27,633 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-10-22 20:11:27,634 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-22 20:11:27,634 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-10-22 20:11:27,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-22 20:11:27,900 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-22 20:11:27,901 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 22 more)] === [2021-10-22 20:11:27,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-22 20:11:27,901 INFO L82 PathProgramCache]: Analyzing trace with hash 1560841517, now seen corresponding path program 1 times [2021-10-22 20:11:27,902 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-22 20:11:27,902 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030317354] [2021-10-22 20:11:27,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-22 20:11:27,907 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-22 20:11:27,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-22 20:11:28,103 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-22 20:11:28,103 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-22 20:11:28,104 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030317354] [2021-10-22 20:11:28,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030317354] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-22 20:11:28,105 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1325680594] [2021-10-22 20:11:28,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-22 20:11:28,105 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-22 20:11:28,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-22 20:11:28,112 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) [2021-10-22 20:11:28,144 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-22 20:11:28,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-22 20:11:28,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 1342 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-22 20:11:28,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-22 20:11:29,588 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-22 20:11:29,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1325680594] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-22 20:11:29,589 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-22 20:11:29,589 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2021-10-22 20:11:29,590 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541303397] [2021-10-22 20:11:29,590 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-22 20:11:29,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-22 20:11:29,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-22 20:11:29,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-22 20:11:29,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-22 20:11:29,591 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-10-22 20:11:29,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-22 20:11:29,592 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-10-22 20:11:29,592 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.