/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/gemcutter/NewStatesSleep-VarAbsGlobalSyntactic.epf -tc ../../../trunk/examples/toolchains/AutomizerBpl.xml -i ../../../trunk/examples/boogie-benchmarks-from-svcomp-memsafety-concurrent/reorder_c11_bad-40.line389.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.por-optimizations-5c708e3-m [2022-09-30 06:44:48,907 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-30 06:44:48,909 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-30 06:44:48,942 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-30 06:44:48,942 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-30 06:44:48,946 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-30 06:44:48,950 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-30 06:44:48,957 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-30 06:44:48,959 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-30 06:44:48,965 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-30 06:44:48,966 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-30 06:44:48,967 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-30 06:44:48,967 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-30 06:44:48,968 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-30 06:44:48,968 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-30 06:44:48,969 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-30 06:44:48,970 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-30 06:44:48,970 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-30 06:44:48,971 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-30 06:44:48,980 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-30 06:44:48,982 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-30 06:44:48,983 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-30 06:44:48,985 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-30 06:44:48,987 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-30 06:44:48,992 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-09-30 06:44:49,001 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-30 06:44:49,002 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-30 06:44:49,002 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-30 06:44:49,003 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/gemcutter/NewStatesSleep-VarAbsGlobalSyntactic.epf [2022-09-30 06:44:49,042 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-30 06:44:49,042 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-30 06:44:49,043 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-09-30 06:44:49,043 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-09-30 06:44:49,044 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-30 06:44:49,044 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-30 06:44:49,044 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-30 06:44:49,045 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-30 06:44:49,045 INFO L138 SettingsManager]: * Use SBE=true [2022-09-30 06:44:49,045 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-30 06:44:49,046 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-30 06:44:49,046 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-30 06:44:49,046 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-30 06:44:49,046 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-30 06:44:49,046 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-30 06:44:49,046 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-30 06:44:49,047 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-30 06:44:49,047 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-30 06:44:49,047 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-30 06:44:49,047 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-30 06:44:49,047 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-30 06:44:49,047 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-30 06:44:49,047 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-30 06:44:49,049 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-30 06:44:49,049 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-30 06:44:49,049 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-30 06:44:49,049 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-30 06:44:49,049 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-30 06:44:49,049 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-30 06:44:49,049 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-30 06:44:49,050 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-30 06:44:49,050 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-30 06:44:49,050 INFO L138 SettingsManager]: * Abstraction used for commutativity in POR=VARIABLES_GLOBAL [2022-09-30 06:44:49,050 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-09-30 06:44:49,050 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-09-30 06:44:49,050 INFO L138 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_ERROR_LOCATION [2022-09-30 06:44:49,050 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_NEW_STATES [2022-09-30 06:44:49,051 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-09-30 06:44:49,051 INFO L138 SettingsManager]: * Independence relation used for POR in concurrent analysis=SYNTACTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-09-30 06:44:49,303 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-30 06:44:49,336 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-30 06:44:49,338 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-30 06:44:49,339 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-09-30 06:44:49,340 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-09-30 06:44:49,341 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/boogie-benchmarks-from-svcomp-memsafety-concurrent/reorder_c11_bad-40.line389.bpl [2022-09-30 06:44:49,342 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/boogie-benchmarks-from-svcomp-memsafety-concurrent/reorder_c11_bad-40.line389.bpl' [2022-09-30 06:44:49,382 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-30 06:44:49,383 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2022-09-30 06:44:49,384 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-30 06:44:49,384 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-30 06:44:49,384 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-30 06:44:49,398 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "reorder_c11_bad-40.line389.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 06:44:49" (1/1) ... [2022-09-30 06:44:49,399 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "reorder_c11_bad-40.line389.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 06:44:49" (1/1) ... [2022-09-30 06:44:49,421 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "reorder_c11_bad-40.line389.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 06:44:49" (1/1) ... [2022-09-30 06:44:49,421 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "reorder_c11_bad-40.line389.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 06:44:49" (1/1) ... [2022-09-30 06:44:49,430 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "reorder_c11_bad-40.line389.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 06:44:49" (1/1) ... [2022-09-30 06:44:49,443 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "reorder_c11_bad-40.line389.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 06:44:49" (1/1) ... [2022-09-30 06:44:49,450 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "reorder_c11_bad-40.line389.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 06:44:49" (1/1) ... [2022-09-30 06:44:49,453 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-30 06:44:49,455 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-30 06:44:49,456 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-30 06:44:49,456 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-30 06:44:49,457 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "reorder_c11_bad-40.line389.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 06:44:49" (1/1) ... [2022-09-30 06:44:49,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-30 06:44:49,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-30 06:44:49,497 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) [2022-09-30 06:44:49,504 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 [2022-09-30 06:44:49,532 INFO L130 BoogieDeclarations]: Found specification of procedure setThread [2022-09-30 06:44:49,533 INFO L138 BoogieDeclarations]: Found implementation of procedure setThread [2022-09-30 06:44:49,533 INFO L130 BoogieDeclarations]: Found specification of procedure checkThread [2022-09-30 06:44:49,533 INFO L138 BoogieDeclarations]: Found implementation of procedure checkThread [2022-09-30 06:44:49,533 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-30 06:44:49,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-30 06:44:49,534 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-09-30 06:44:49,636 INFO L234 CfgBuilder]: Building ICFG [2022-09-30 06:44:49,638 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-30 06:44:50,023 INFO L275 CfgBuilder]: Performing block encoding [2022-09-30 06:44:50,034 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-30 06:44:50,034 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-09-30 06:44:50,037 INFO L202 PluginConnector]: Adding new model reorder_c11_bad-40.line389.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.09 06:44:50 BoogieIcfgContainer [2022-09-30 06:44:50,037 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-30 06:44:50,042 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-30 06:44:50,042 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-30 06:44:50,046 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-30 06:44:50,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "reorder_c11_bad-40.line389.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 06:44:49" (1/2) ... [2022-09-30 06:44:50,048 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@857dfd8 and model type reorder_c11_bad-40.line389.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.09 06:44:50, skipping insertion in model container [2022-09-30 06:44:50,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "reorder_c11_bad-40.line389.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.09 06:44:50" (2/2) ... [2022-09-30 06:44:50,052 INFO L112 eAbstractionObserver]: Analyzing ICFG reorder_c11_bad-40.line389.bpl [2022-09-30 06:44:50,059 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-09-30 06:44:50,067 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-30 06:44:50,067 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-09-30 06:44:50,067 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-30 06:44:50,178 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-09-30 06:44:50,231 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-09-30 06:44:50,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-09-30 06:44:50,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-30 06:44:50,237 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) [2022-09-30 06:44:50,238 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 [2022-09-30 06:44:50,275 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-09-30 06:44:50,284 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0ASSERT_VIOLATIONASSERT ======== [2022-09-30 06:44:50,293 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3f5d8c99, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-30 06:44:50,293 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-09-30 06:44:50,367 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-09-30 06:44:50,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-30 06:44:50,374 INFO L85 PathProgramCache]: Analyzing trace with hash 94382033, now seen corresponding path program 1 times [2022-09-30 06:44:50,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-30 06:44:50,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901091592] [2022-09-30 06:44:50,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 06:44:50,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-30 06:44:50,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-30 06:44:50,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-30 06:44:50,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-30 06:44:50,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901091592] [2022-09-30 06:44:50,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901091592] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-30 06:44:50,562 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-30 06:44:50,562 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-30 06:44:50,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484342803] [2022-09-30 06:44:50,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-30 06:44:50,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-09-30 06:44:50,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-30 06:44:50,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-09-30 06:44:50,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-09-30 06:44:50,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:44:50,598 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-09-30 06:44:50,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 35.5) internal successors, (71), 2 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-30 06:44:50,599 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:44:50,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:44:50,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-30 06:44:50,626 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-09-30 06:44:50,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-30 06:44:50,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1865821519, now seen corresponding path program 1 times [2022-09-30 06:44:50,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-30 06:44:50,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367054237] [2022-09-30 06:44:50,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 06:44:50,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-30 06:44:50,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-30 06:44:50,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-30 06:44:50,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-30 06:44:50,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367054237] [2022-09-30 06:44:50,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367054237] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-30 06:44:50,767 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-30 06:44:50,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-30 06:44:50,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891042796] [2022-09-30 06:44:50,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-30 06:44:50,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-30 06:44:50,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-30 06:44:50,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-30 06:44:50,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-30 06:44:50,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:44:50,779 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-09-30 06:44:50,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-30 06:44:50,780 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:44:50,780 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:44:50,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:44:50,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-30 06:44:50,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-09-30 06:44:50,922 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-09-30 06:44:50,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-30 06:44:50,923 INFO L85 PathProgramCache]: Analyzing trace with hash -555444586, now seen corresponding path program 1 times [2022-09-30 06:44:50,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-30 06:44:50,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803650205] [2022-09-30 06:44:50,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 06:44:50,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-30 06:44:50,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-30 06:44:51,036 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-30 06:44:51,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-30 06:44:51,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803650205] [2022-09-30 06:44:51,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803650205] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-30 06:44:51,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1998763673] [2022-09-30 06:44:51,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 06:44:51,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-30 06:44:51,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-30 06:44:51,043 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) [2022-09-30 06:44:51,044 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-09-30 06:44:51,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-30 06:44:51,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 4 conjunts are in the unsatisfiable core [2022-09-30 06:44:51,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-30 06:44:51,236 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-30 06:44:51,237 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-30 06:44:51,332 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-30 06:44:51,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1998763673] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-30 06:44:51,333 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-30 06:44:51,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-09-30 06:44:51,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601872894] [2022-09-30 06:44:51,334 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-30 06:44:51,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-30 06:44:51,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-30 06:44:51,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-30 06:44:51,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-09-30 06:44:51,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:44:51,336 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-09-30 06:44:51,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.1) internal successors, (141), 10 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-30 06:44:51,337 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:44:51,337 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-09-30 06:44:51,337 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:44:51,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:44:51,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-30 06:44:51,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-30 06:44:51,498 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (0 of 1 remaining) [2022-09-30 06:44:51,530 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-09-30 06:44:51,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-09-30 06:44:51,717 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-09-30 06:44:51,719 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT was SAFE (1/3) [2022-09-30 06:44:51,725 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-09-30 06:44:51,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-09-30 06:44:51,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-30 06:44:51,728 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-09-30 06:44:51,730 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (4)] Waiting until timeout for monitored process [2022-09-30 06:44:51,734 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-09-30 06:44:51,734 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES ======== [2022-09-30 06:44:51,735 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3f5d8c99, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-30 06:44:51,735 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-09-30 06:44:51,811 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-30 06:44:51,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-30 06:44:51,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1486164825, now seen corresponding path program 1 times [2022-09-30 06:44:51,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-30 06:44:51,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978131596] [2022-09-30 06:44:51,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 06:44:51,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-30 06:44:51,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-30 06:44:51,864 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-09-30 06:44:51,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-30 06:44:51,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978131596] [2022-09-30 06:44:51,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978131596] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-30 06:44:51,865 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-30 06:44:51,866 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-30 06:44:51,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656092629] [2022-09-30 06:44:51,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-30 06:44:51,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-09-30 06:44:51,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-30 06:44:51,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-09-30 06:44:51,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-09-30 06:44:51,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:44:51,868 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-09-30 06:44:51,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 41.5) internal successors, (83), 2 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) [2022-09-30 06:44:51,868 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:44:51,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:44:51,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-09-30 06:44:51,874 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-30 06:44:51,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-30 06:44:51,874 INFO L85 PathProgramCache]: Analyzing trace with hash 1836964762, now seen corresponding path program 1 times [2022-09-30 06:44:51,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-30 06:44:51,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501169646] [2022-09-30 06:44:51,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 06:44:51,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-30 06:44:51,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-30 06:44:51,929 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-09-30 06:44:51,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-30 06:44:51,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501169646] [2022-09-30 06:44:51,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501169646] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-30 06:44:51,930 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-30 06:44:51,930 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-30 06:44:51,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090836221] [2022-09-30 06:44:51,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-30 06:44:51,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-30 06:44:51,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-30 06:44:51,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-30 06:44:51,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-30 06:44:51,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:44:51,932 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-09-30 06:44:51,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 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) [2022-09-30 06:44:51,933 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:44:51,933 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:44:51,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:44:51,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-30 06:44:51,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-09-30 06:44:51,972 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-30 06:44:51,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-30 06:44:51,973 INFO L85 PathProgramCache]: Analyzing trace with hash -1813010114, now seen corresponding path program 1 times [2022-09-30 06:44:51,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-30 06:44:51,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823850499] [2022-09-30 06:44:51,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 06:44:51,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-30 06:44:51,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-30 06:44:52,038 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-09-30 06:44:52,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-30 06:44:52,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823850499] [2022-09-30 06:44:52,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823850499] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-30 06:44:52,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1072272763] [2022-09-30 06:44:52,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 06:44:52,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-30 06:44:52,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-30 06:44:52,041 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) [2022-09-30 06:44:52,061 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-09-30 06:44:52,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-30 06:44:52,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 4 conjunts are in the unsatisfiable core [2022-09-30 06:44:52,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-30 06:44:52,227 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-09-30 06:44:52,227 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-30 06:44:52,304 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-09-30 06:44:52,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1072272763] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-30 06:44:52,305 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-30 06:44:52,305 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-09-30 06:44:52,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495172932] [2022-09-30 06:44:52,305 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-30 06:44:52,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-30 06:44:52,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-30 06:44:52,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-30 06:44:52,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-09-30 06:44:52,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:44:52,312 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-09-30 06:44:52,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.6) internal successors, (136), 10 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-30 06:44:52,312 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:44:52,312 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-09-30 06:44:52,312 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:44:52,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:44:52,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-30 06:44:52,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-30 06:44:52,424 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2022-09-30 06:44:52,451 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-09-30 06:44:52,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-30 06:44:52,635 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-09-30 06:44:52,635 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES was SAFE (2/3) [2022-09-30 06:44:52,639 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-09-30 06:44:52,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-09-30 06:44:52,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-30 06:44:52,641 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-09-30 06:44:52,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (6)] Waiting until timeout for monitored process [2022-09-30 06:44:52,646 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-09-30 06:44:52,646 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES ======== [2022-09-30 06:44:52,647 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3f5d8c99, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-30 06:44:52,647 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-09-30 06:44:52,687 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-30 06:44:52,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-30 06:44:52,688 INFO L85 PathProgramCache]: Analyzing trace with hash -1754142027, now seen corresponding path program 1 times [2022-09-30 06:44:52,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-30 06:44:52,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359006711] [2022-09-30 06:44:52,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 06:44:52,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-30 06:44:52,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-30 06:44:52,723 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-09-30 06:44:52,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-30 06:44:52,765 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-09-30 06:44:52,765 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-09-30 06:44:52,765 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2022-09-30 06:44:52,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-09-30 06:44:52,766 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-09-30 06:44:52,766 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES was UNSAFE (3/3) [2022-09-30 06:44:52,767 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-09-30 06:44:52,767 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-09-30 06:44:52,786 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2022-09-30 06:44:52,790 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-09-30 06:44:52,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-09-30 06:44:52,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-30 06:44:52,793 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-09-30 06:44:52,795 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (7)] Waiting until timeout for monitored process [2022-09-30 06:44:52,799 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-09-30 06:44:52,799 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0ASSERT_VIOLATIONASSERT ======== [2022-09-30 06:44:52,800 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3f5d8c99, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-30 06:44:52,800 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-09-30 06:44:52,819 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-09-30 06:44:52,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-30 06:44:52,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1956019180, now seen corresponding path program 1 times [2022-09-30 06:44:52,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-30 06:44:52,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118169551] [2022-09-30 06:44:52,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 06:44:52,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-30 06:44:52,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-30 06:44:52,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-30 06:44:52,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-30 06:44:52,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118169551] [2022-09-30 06:44:52,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118169551] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-30 06:44:52,859 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-30 06:44:52,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-30 06:44:52,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750877998] [2022-09-30 06:44:52,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-30 06:44:52,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-09-30 06:44:52,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-30 06:44:52,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-09-30 06:44:52,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-09-30 06:44:52,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:44:52,860 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-09-30 06:44:52,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 35.5) internal successors, (71), 2 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-30 06:44:52,861 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:44:52,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:44:52,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-09-30 06:44:52,863 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-09-30 06:44:52,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-30 06:44:52,863 INFO L85 PathProgramCache]: Analyzing trace with hash -184579694, now seen corresponding path program 1 times [2022-09-30 06:44:52,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-30 06:44:52,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395751815] [2022-09-30 06:44:52,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 06:44:52,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-30 06:44:52,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-30 06:44:52,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-30 06:44:52,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-30 06:44:52,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395751815] [2022-09-30 06:44:52,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395751815] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-30 06:44:52,910 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-30 06:44:52,911 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-30 06:44:52,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594585373] [2022-09-30 06:44:52,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-30 06:44:52,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-30 06:44:52,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-30 06:44:52,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-30 06:44:52,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-30 06:44:52,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:44:52,912 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-09-30 06:44:52,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-30 06:44:52,912 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:44:52,912 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:44:52,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:44:52,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-30 06:44:52,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-09-30 06:44:52,989 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-09-30 06:44:52,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-30 06:44:52,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1768205626, now seen corresponding path program 1 times [2022-09-30 06:44:52,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-30 06:44:52,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430548217] [2022-09-30 06:44:52,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 06:44:52,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-30 06:44:53,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-30 06:44:53,052 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-30 06:44:53,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-30 06:44:53,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430548217] [2022-09-30 06:44:53,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430548217] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-30 06:44:53,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [296938691] [2022-09-30 06:44:53,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 06:44:53,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-30 06:44:53,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-30 06:44:53,055 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-30 06:44:53,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-09-30 06:44:53,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-30 06:44:53,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 4 conjunts are in the unsatisfiable core [2022-09-30 06:44:53,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-30 06:44:53,218 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-30 06:44:53,218 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-30 06:44:53,260 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-30 06:44:53,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [296938691] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-30 06:44:53,260 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-30 06:44:53,260 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-09-30 06:44:53,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776518113] [2022-09-30 06:44:53,261 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-30 06:44:53,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-30 06:44:53,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-30 06:44:53,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-30 06:44:53,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-09-30 06:44:53,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:44:53,265 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-09-30 06:44:53,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.1) internal successors, (141), 10 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-30 06:44:53,266 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:44:53,267 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-09-30 06:44:53,267 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:44:53,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:44:53,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-30 06:44:53,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-09-30 06:44:53,603 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (0 of 1 remaining) [2022-09-30 06:44:53,629 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-09-30 06:44:53,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-30 06:44:53,829 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-09-30 06:44:53,829 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT was SAFE (1/3) [2022-09-30 06:44:53,833 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-09-30 06:44:53,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-09-30 06:44:53,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-30 06:44:53,836 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-09-30 06:44:53,846 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (9)] Waiting until timeout for monitored process [2022-09-30 06:44:53,849 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-09-30 06:44:53,849 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES ======== [2022-09-30 06:44:53,850 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3f5d8c99, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-30 06:44:53,850 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-09-30 06:44:53,909 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-30 06:44:53,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-30 06:44:53,910 INFO L85 PathProgramCache]: Analyzing trace with hash 232378384, now seen corresponding path program 1 times [2022-09-30 06:44:53,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-30 06:44:53,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160099402] [2022-09-30 06:44:53,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 06:44:53,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-30 06:44:53,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-30 06:44:53,944 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-09-30 06:44:53,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-30 06:44:53,997 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-09-30 06:44:54,003 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-09-30 06:44:54,003 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2022-09-30 06:44:54,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-09-30 06:44:54,006 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-09-30 06:44:54,006 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES was UNSAFE (2/3) [2022-09-30 06:44:54,007 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-09-30 06:44:54,007 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-09-30 06:44:54,043 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2022-09-30 06:44:54,046 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-09-30 06:44:54,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-09-30 06:44:54,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-30 06:44:54,053 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-09-30 06:44:54,054 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (10)] Waiting until timeout for monitored process [2022-09-30 06:44:54,057 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-09-30 06:44:54,057 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0ASSERT_VIOLATIONASSERT ======== [2022-09-30 06:44:54,058 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3f5d8c99, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-30 06:44:54,058 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-09-30 06:44:54,073 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-09-30 06:44:54,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-30 06:44:54,073 INFO L85 PathProgramCache]: Analyzing trace with hash 403515521, now seen corresponding path program 1 times [2022-09-30 06:44:54,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-30 06:44:54,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028019009] [2022-09-30 06:44:54,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 06:44:54,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-30 06:44:54,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-30 06:44:54,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-30 06:44:54,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-30 06:44:54,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028019009] [2022-09-30 06:44:54,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028019009] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-30 06:44:54,092 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-30 06:44:54,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-30 06:44:54,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426566570] [2022-09-30 06:44:54,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-30 06:44:54,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-09-30 06:44:54,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-30 06:44:54,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-09-30 06:44:54,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-09-30 06:44:54,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:44:54,094 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-09-30 06:44:54,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 35.5) internal successors, (71), 2 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-30 06:44:54,094 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:44:54,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:44:54,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-09-30 06:44:54,096 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-09-30 06:44:54,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-30 06:44:54,097 INFO L85 PathProgramCache]: Analyzing trace with hash -2120012289, now seen corresponding path program 1 times [2022-09-30 06:44:54,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-30 06:44:54,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569465578] [2022-09-30 06:44:54,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 06:44:54,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-30 06:44:54,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-30 06:44:54,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-30 06:44:54,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-30 06:44:54,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569465578] [2022-09-30 06:44:54,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569465578] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-30 06:44:54,119 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-30 06:44:54,119 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-30 06:44:54,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17420063] [2022-09-30 06:44:54,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-30 06:44:54,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-30 06:44:54,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-30 06:44:54,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-30 06:44:54,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-30 06:44:54,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:44:54,121 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-09-30 06:44:54,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-30 06:44:54,121 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:44:54,121 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:44:54,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:44:54,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-30 06:44:54,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-09-30 06:44:54,180 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-09-30 06:44:54,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-30 06:44:54,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1600246472, now seen corresponding path program 1 times [2022-09-30 06:44:54,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-30 06:44:54,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076270765] [2022-09-30 06:44:54,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 06:44:54,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-30 06:44:54,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-30 06:44:54,221 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-30 06:44:54,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-30 06:44:54,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076270765] [2022-09-30 06:44:54,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076270765] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-30 06:44:54,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [237101078] [2022-09-30 06:44:54,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 06:44:54,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-30 06:44:54,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-30 06:44:54,227 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-30 06:44:54,253 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-09-30 06:44:54,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-30 06:44:54,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 4 conjunts are in the unsatisfiable core [2022-09-30 06:44:54,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-30 06:44:54,364 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-30 06:44:54,364 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-30 06:44:54,403 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-30 06:44:54,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [237101078] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-30 06:44:54,404 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-30 06:44:54,404 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-09-30 06:44:54,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657888824] [2022-09-30 06:44:54,404 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-30 06:44:54,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-30 06:44:54,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-30 06:44:54,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-30 06:44:54,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-09-30 06:44:54,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:44:54,406 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-09-30 06:44:54,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.1) internal successors, (141), 10 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-30 06:44:54,406 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:44:54,406 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-09-30 06:44:54,406 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:44:54,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:44:54,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-30 06:44:54,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-09-30 06:44:54,551 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-09-30 06:44:54,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-09-30 06:44:54,740 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-09-30 06:44:54,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-30 06:44:54,740 INFO L85 PathProgramCache]: Analyzing trace with hash 405143913, now seen corresponding path program 1 times [2022-09-30 06:44:54,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-30 06:44:54,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62904326] [2022-09-30 06:44:54,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 06:44:54,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-30 06:44:54,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-30 06:44:54,821 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 13 proven. 8 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-09-30 06:44:54,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-30 06:44:54,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62904326] [2022-09-30 06:44:54,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62904326] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-30 06:44:54,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [964557319] [2022-09-30 06:44:54,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 06:44:54,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-30 06:44:54,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-30 06:44:54,823 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-30 06:44:54,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-09-30 06:44:54,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-30 06:44:54,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 8 conjunts are in the unsatisfiable core [2022-09-30 06:44:54,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-30 06:44:55,049 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-30 06:44:55,049 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-30 06:44:55,173 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-30 06:44:55,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [964557319] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-30 06:44:55,173 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-30 06:44:55,174 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 20 [2022-09-30 06:44:55,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647275406] [2022-09-30 06:44:55,174 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-30 06:44:55,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-09-30 06:44:55,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-30 06:44:55,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-09-30 06:44:55,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2022-09-30 06:44:55,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:44:55,176 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-09-30 06:44:55,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 12.35) internal successors, (247), 20 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-30 06:44:55,176 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:44:55,176 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-09-30 06:44:55,176 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2022-09-30 06:44:55,176 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:44:58,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:44:58,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-30 06:44:58,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-09-30 06:44:58,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-09-30 06:44:58,672 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (0 of 1 remaining) [2022-09-30 06:44:58,701 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-09-30 06:44:58,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-09-30 06:44:58,893 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-09-30 06:44:58,893 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT was SAFE (1/3) [2022-09-30 06:44:58,897 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-09-30 06:44:58,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-09-30 06:44:58,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-30 06:44:58,901 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-09-30 06:44:58,903 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (13)] Waiting until timeout for monitored process [2022-09-30 06:44:58,907 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-09-30 06:44:58,907 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES ======== [2022-09-30 06:44:58,908 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3f5d8c99, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-30 06:44:58,908 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-09-30 06:44:58,963 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-30 06:44:58,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-30 06:44:58,963 INFO L85 PathProgramCache]: Analyzing trace with hash -24564936, now seen corresponding path program 1 times [2022-09-30 06:44:58,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-30 06:44:58,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090991462] [2022-09-30 06:44:58,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 06:44:58,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-30 06:44:58,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-30 06:44:58,994 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-09-30 06:44:58,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-30 06:44:58,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090991462] [2022-09-30 06:44:58,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090991462] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-30 06:44:58,995 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-30 06:44:58,995 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-30 06:44:58,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060309575] [2022-09-30 06:44:58,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-30 06:44:58,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-09-30 06:44:58,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-30 06:44:58,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-09-30 06:44:58,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-09-30 06:44:58,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:44:58,996 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-09-30 06:44:58,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 42.5) internal successors, (85), 2 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-30 06:44:58,997 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:44:59,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:44:59,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-09-30 06:44:59,003 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-30 06:44:59,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-30 06:44:59,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1279828793, now seen corresponding path program 1 times [2022-09-30 06:44:59,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-30 06:44:59,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116416613] [2022-09-30 06:44:59,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 06:44:59,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-30 06:44:59,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-30 06:44:59,045 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-09-30 06:44:59,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-30 06:44:59,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116416613] [2022-09-30 06:44:59,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116416613] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-30 06:44:59,046 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-30 06:44:59,046 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-30 06:44:59,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634159747] [2022-09-30 06:44:59,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-30 06:44:59,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-30 06:44:59,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-30 06:44:59,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-30 06:44:59,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-30 06:44:59,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:44:59,047 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-09-30 06:44:59,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-30 06:44:59,047 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:44:59,047 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:44:59,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:44:59,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-30 06:44:59,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-09-30 06:44:59,086 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-30 06:44:59,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-30 06:44:59,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1526742217, now seen corresponding path program 1 times [2022-09-30 06:44:59,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-30 06:44:59,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139678429] [2022-09-30 06:44:59,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 06:44:59,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-30 06:44:59,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-30 06:44:59,150 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-09-30 06:44:59,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-30 06:44:59,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139678429] [2022-09-30 06:44:59,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139678429] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-30 06:44:59,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1576572073] [2022-09-30 06:44:59,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 06:44:59,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-30 06:44:59,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-30 06:44:59,153 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-30 06:44:59,154 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-09-30 06:44:59,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-30 06:44:59,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 4 conjunts are in the unsatisfiable core [2022-09-30 06:44:59,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-30 06:44:59,297 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-09-30 06:44:59,297 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-30 06:44:59,335 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-09-30 06:44:59,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1576572073] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-30 06:44:59,335 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-30 06:44:59,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-09-30 06:44:59,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209468523] [2022-09-30 06:44:59,336 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-30 06:44:59,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-30 06:44:59,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-30 06:44:59,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-30 06:44:59,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-09-30 06:44:59,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:44:59,338 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-09-30 06:44:59,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.8) internal successors, (138), 10 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-30 06:44:59,339 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:44:59,339 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-09-30 06:44:59,339 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:44:59,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:44:59,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-30 06:44:59,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-09-30 06:44:59,480 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-09-30 06:44:59,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-09-30 06:44:59,672 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-30 06:44:59,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-30 06:44:59,673 INFO L85 PathProgramCache]: Analyzing trace with hash -2110194472, now seen corresponding path program 1 times [2022-09-30 06:44:59,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-30 06:44:59,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498232755] [2022-09-30 06:44:59,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 06:44:59,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-30 06:44:59,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-30 06:44:59,740 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 47 proven. 1 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2022-09-30 06:44:59,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-30 06:44:59,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498232755] [2022-09-30 06:44:59,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498232755] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-30 06:44:59,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1187663625] [2022-09-30 06:44:59,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 06:44:59,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-30 06:44:59,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-30 06:44:59,743 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-30 06:44:59,744 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-09-30 06:44:59,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-30 06:44:59,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 8 conjunts are in the unsatisfiable core [2022-09-30 06:44:59,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-30 06:44:59,985 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-09-30 06:44:59,985 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-30 06:45:00,137 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-09-30 06:45:00,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1187663625] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-30 06:45:00,137 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-30 06:45:00,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2022-09-30 06:45:00,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387514130] [2022-09-30 06:45:00,138 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-30 06:45:00,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-09-30 06:45:00,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-30 06:45:00,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-09-30 06:45:00,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2022-09-30 06:45:00,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:45:00,140 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-09-30 06:45:00,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 12.052631578947368) internal successors, (229), 19 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-30 06:45:00,140 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:45:00,140 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-09-30 06:45:00,140 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2022-09-30 06:45:00,140 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:45:02,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:45:02,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-30 06:45:02,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-09-30 06:45:02,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-09-30 06:45:02,216 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2022-09-30 06:45:02,246 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-09-30 06:45:02,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-30 06:45:02,425 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-09-30 06:45:02,425 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES was SAFE (2/3) [2022-09-30 06:45:02,428 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-09-30 06:45:02,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-09-30 06:45:02,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-30 06:45:02,430 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-09-30 06:45:02,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (16)] Waiting until timeout for monitored process [2022-09-30 06:45:02,435 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-09-30 06:45:02,435 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES ======== [2022-09-30 06:45:02,436 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3f5d8c99, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-30 06:45:02,436 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-09-30 06:45:02,489 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-30 06:45:02,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-30 06:45:02,489 INFO L85 PathProgramCache]: Analyzing trace with hash 68917172, now seen corresponding path program 1 times [2022-09-30 06:45:02,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-30 06:45:02,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182294792] [2022-09-30 06:45:02,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 06:45:02,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-30 06:45:02,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-30 06:45:02,534 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-09-30 06:45:02,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-30 06:45:02,592 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-09-30 06:45:02,592 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-09-30 06:45:02,592 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2022-09-30 06:45:02,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-09-30 06:45:02,593 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-09-30 06:45:02,593 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES was UNSAFE (3/3) [2022-09-30 06:45:02,593 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-09-30 06:45:02,593 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-09-30 06:45:02,628 INFO L144 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2022-09-30 06:45:02,631 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-09-30 06:45:02,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-09-30 06:45:02,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-30 06:45:02,634 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-09-30 06:45:02,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (17)] Waiting until timeout for monitored process [2022-09-30 06:45:02,639 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-09-30 06:45:02,639 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0ASSERT_VIOLATIONASSERT ======== [2022-09-30 06:45:02,640 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3f5d8c99, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-30 06:45:02,640 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-09-30 06:45:02,655 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-09-30 06:45:02,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-30 06:45:02,655 INFO L85 PathProgramCache]: Analyzing trace with hash -1493084100, now seen corresponding path program 1 times [2022-09-30 06:45:02,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-30 06:45:02,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329269383] [2022-09-30 06:45:02,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 06:45:02,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-30 06:45:02,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-30 06:45:02,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-30 06:45:02,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-30 06:45:02,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329269383] [2022-09-30 06:45:02,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329269383] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-30 06:45:02,674 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-30 06:45:02,674 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-30 06:45:02,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751612771] [2022-09-30 06:45:02,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-30 06:45:02,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-09-30 06:45:02,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-30 06:45:02,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-09-30 06:45:02,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-09-30 06:45:02,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:45:02,675 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-09-30 06:45:02,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 35.5) internal successors, (71), 2 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-30 06:45:02,675 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:45:02,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:45:02,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-09-30 06:45:02,677 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-09-30 06:45:02,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-30 06:45:02,677 INFO L85 PathProgramCache]: Analyzing trace with hash 278355386, now seen corresponding path program 1 times [2022-09-30 06:45:02,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-30 06:45:02,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711932554] [2022-09-30 06:45:02,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 06:45:02,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-30 06:45:02,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-30 06:45:02,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-30 06:45:02,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-30 06:45:02,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711932554] [2022-09-30 06:45:02,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711932554] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-30 06:45:02,702 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-30 06:45:02,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-30 06:45:02,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885651397] [2022-09-30 06:45:02,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-30 06:45:02,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-30 06:45:02,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-30 06:45:02,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-30 06:45:02,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-30 06:45:02,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:45:02,704 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-09-30 06:45:02,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-30 06:45:02,705 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:45:02,705 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:45:02,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:45:02,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-30 06:45:02,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-09-30 06:45:02,759 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-09-30 06:45:02,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-30 06:45:02,759 INFO L85 PathProgramCache]: Analyzing trace with hash -1617633820, now seen corresponding path program 1 times [2022-09-30 06:45:02,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-30 06:45:02,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336105490] [2022-09-30 06:45:02,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 06:45:02,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-30 06:45:02,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-30 06:45:02,802 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-30 06:45:02,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-30 06:45:02,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336105490] [2022-09-30 06:45:02,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336105490] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-30 06:45:02,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1660400675] [2022-09-30 06:45:02,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 06:45:02,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-30 06:45:02,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-30 06:45:02,805 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-30 06:45:02,807 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-09-30 06:45:03,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-30 06:45:03,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 4 conjunts are in the unsatisfiable core [2022-09-30 06:45:03,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-30 06:45:03,095 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-30 06:45:03,095 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-30 06:45:03,133 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-30 06:45:03,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1660400675] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-30 06:45:03,134 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-30 06:45:03,134 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-09-30 06:45:03,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402421433] [2022-09-30 06:45:03,134 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-30 06:45:03,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-30 06:45:03,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-30 06:45:03,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-30 06:45:03,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-09-30 06:45:03,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:45:03,135 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-09-30 06:45:03,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.1) internal successors, (141), 10 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-30 06:45:03,136 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:45:03,136 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-09-30 06:45:03,136 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:45:03,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:45:03,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-30 06:45:03,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-09-30 06:45:03,263 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-09-30 06:45:03,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-30 06:45:03,463 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-09-30 06:45:03,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-30 06:45:03,463 INFO L85 PathProgramCache]: Analyzing trace with hash -561379707, now seen corresponding path program 1 times [2022-09-30 06:45:03,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-30 06:45:03,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788372729] [2022-09-30 06:45:03,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 06:45:03,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-30 06:45:03,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-30 06:45:03,534 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 13 proven. 8 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-09-30 06:45:03,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-30 06:45:03,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788372729] [2022-09-30 06:45:03,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788372729] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-30 06:45:03,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1225653644] [2022-09-30 06:45:03,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 06:45:03,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-30 06:45:03,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-30 06:45:03,537 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-30 06:45:03,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-09-30 06:45:03,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-30 06:45:03,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 8 conjunts are in the unsatisfiable core [2022-09-30 06:45:03,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-30 06:45:03,760 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-30 06:45:03,760 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-30 06:45:03,895 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-30 06:45:03,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1225653644] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-30 06:45:03,895 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-30 06:45:03,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 20 [2022-09-30 06:45:03,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487809705] [2022-09-30 06:45:03,896 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-30 06:45:03,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-09-30 06:45:03,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-30 06:45:03,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-09-30 06:45:03,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2022-09-30 06:45:03,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:45:03,897 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-09-30 06:45:03,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 12.35) internal successors, (247), 20 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-30 06:45:03,898 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:45:03,898 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-09-30 06:45:03,898 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2022-09-30 06:45:03,898 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:45:48,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:45:48,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-30 06:45:48,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-09-30 06:45:48,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-09-30 06:45:48,433 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (0 of 1 remaining) [2022-09-30 06:45:48,450 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-09-30 06:45:48,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-30 06:45:48,634 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-09-30 06:45:48,634 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT was SAFE (1/3) [2022-09-30 06:45:48,637 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-09-30 06:45:48,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-09-30 06:45:48,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-30 06:45:48,641 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-09-30 06:45:48,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (20)] Waiting until timeout for monitored process [2022-09-30 06:45:48,650 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-09-30 06:45:48,651 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES ======== [2022-09-30 06:45:48,651 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3f5d8c99, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-30 06:45:48,651 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-09-30 06:45:48,691 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-30 06:45:48,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-30 06:45:48,691 INFO L85 PathProgramCache]: Analyzing trace with hash -561035135, now seen corresponding path program 1 times [2022-09-30 06:45:48,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-30 06:45:48,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135485885] [2022-09-30 06:45:48,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 06:45:48,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-30 06:45:48,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-30 06:45:48,721 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-09-30 06:45:48,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-30 06:45:48,782 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-09-30 06:45:48,782 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-09-30 06:45:48,783 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2022-09-30 06:45:48,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-09-30 06:45:48,783 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-09-30 06:45:48,784 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES was UNSAFE (2/3) [2022-09-30 06:45:48,784 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2022-09-30 06:45:48,784 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2022-09-30 06:45:48,819 INFO L144 ThreadInstanceAdder]: Constructed 20 joinOtherThreadTransitions. [2022-09-30 06:45:48,822 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-09-30 06:45:48,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-09-30 06:45:48,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-30 06:45:48,827 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-09-30 06:45:48,841 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-09-30 06:45:48,841 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0ASSERT_VIOLATIONASSERT ======== [2022-09-30 06:45:48,842 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3f5d8c99, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-30 06:45:48,842 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-09-30 06:45:48,856 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-09-30 06:45:48,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-30 06:45:48,856 INFO L85 PathProgramCache]: Analyzing trace with hash 406576129, now seen corresponding path program 1 times [2022-09-30 06:45:48,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-30 06:45:48,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889620778] [2022-09-30 06:45:48,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 06:45:48,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-30 06:45:48,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (21)] Waiting until timeout for monitored process [2022-09-30 06:45:48,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-30 06:45:48,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-30 06:45:48,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-30 06:45:48,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889620778] [2022-09-30 06:45:48,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889620778] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-30 06:45:48,874 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-30 06:45:48,874 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-30 06:45:48,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234085525] [2022-09-30 06:45:48,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-30 06:45:48,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-09-30 06:45:48,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-30 06:45:48,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-09-30 06:45:48,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-09-30 06:45:48,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:45:48,876 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-09-30 06:45:48,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 35.5) internal successors, (71), 2 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-30 06:45:48,876 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:45:48,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:45:48,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-09-30 06:45:48,877 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-09-30 06:45:48,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-30 06:45:48,878 INFO L85 PathProgramCache]: Analyzing trace with hash -2116951681, now seen corresponding path program 1 times [2022-09-30 06:45:48,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-30 06:45:48,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980013654] [2022-09-30 06:45:48,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 06:45:48,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-30 06:45:48,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-30 06:45:49,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-30 06:45:49,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-30 06:45:49,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980013654] [2022-09-30 06:45:49,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980013654] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-30 06:45:49,526 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-30 06:45:49,526 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-30 06:45:49,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751168410] [2022-09-30 06:45:49,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-30 06:45:49,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-30 06:45:49,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-30 06:45:49,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-30 06:45:49,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-30 06:45:49,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:45:49,527 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-09-30 06:45:49,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-30 06:45:49,528 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:45:49,528 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:45:49,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:45:49,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-30 06:45:49,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-09-30 06:45:49,612 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-09-30 06:45:49,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-30 06:45:49,612 INFO L85 PathProgramCache]: Analyzing trace with hash -409090102, now seen corresponding path program 1 times [2022-09-30 06:45:49,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-30 06:45:49,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806689311] [2022-09-30 06:45:49,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 06:45:49,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-30 06:45:49,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-30 06:45:49,680 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-30 06:45:49,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-30 06:45:49,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806689311] [2022-09-30 06:45:49,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806689311] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-30 06:45:49,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [956566516] [2022-09-30 06:45:49,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 06:45:49,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-30 06:45:49,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-30 06:45:49,707 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-30 06:45:49,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-09-30 06:45:49,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-30 06:45:49,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 4 conjunts are in the unsatisfiable core [2022-09-30 06:45:49,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-30 06:45:49,843 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-30 06:45:49,843 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-30 06:45:49,883 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-30 06:45:49,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [956566516] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-30 06:45:49,883 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-30 06:45:49,884 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-09-30 06:45:49,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192739250] [2022-09-30 06:45:49,884 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-30 06:45:49,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-30 06:45:49,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-30 06:45:49,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-30 06:45:49,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-09-30 06:45:49,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:45:49,886 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-09-30 06:45:49,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.1) internal successors, (141), 10 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-30 06:45:49,886 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:45:49,886 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-09-30 06:45:49,886 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:45:49,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:45:49,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-30 06:45:49,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-09-30 06:45:50,020 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-09-30 06:45:50,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-09-30 06:45:50,212 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-09-30 06:45:50,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-30 06:45:50,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1467955925, now seen corresponding path program 1 times [2022-09-30 06:45:50,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-30 06:45:50,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472304673] [2022-09-30 06:45:50,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 06:45:50,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-30 06:45:50,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-30 06:45:50,279 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 13 proven. 8 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-09-30 06:45:50,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-30 06:45:50,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472304673] [2022-09-30 06:45:50,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472304673] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-30 06:45:50,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2057697615] [2022-09-30 06:45:50,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 06:45:50,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-30 06:45:50,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-30 06:45:50,281 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-30 06:45:50,283 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-09-30 06:45:50,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-30 06:45:50,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 8 conjunts are in the unsatisfiable core [2022-09-30 06:45:50,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-30 06:45:50,510 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-30 06:45:50,510 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-30 06:45:50,650 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-30 06:45:50,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2057697615] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-30 06:45:50,651 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-30 06:45:50,651 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 20 [2022-09-30 06:45:50,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071782947] [2022-09-30 06:45:50,651 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-30 06:45:50,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-09-30 06:45:50,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-30 06:45:50,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-09-30 06:45:50,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2022-09-30 06:45:50,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:45:50,653 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-09-30 06:45:50,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 12.35) internal successors, (247), 20 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-30 06:45:50,654 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:45:50,654 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-09-30 06:45:50,654 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2022-09-30 06:45:50,654 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.