/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/thin002_power.oepc.line1141.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.por-optimizations-5c708e3-m [2022-10-04 14:40:26,937 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-04 14:40:26,938 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-04 14:40:26,959 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-04 14:40:26,960 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-04 14:40:26,960 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-04 14:40:26,961 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-04 14:40:26,962 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-04 14:40:26,964 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-04 14:40:26,967 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-04 14:40:26,968 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-04 14:40:26,969 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-04 14:40:26,969 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-04 14:40:26,971 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-04 14:40:26,972 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-04 14:40:26,973 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-04 14:40:26,974 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-04 14:40:26,974 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-04 14:40:26,978 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-04 14:40:26,983 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-04 14:40:26,984 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-04 14:40:26,984 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-04 14:40:26,986 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-04 14:40:26,986 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-04 14:40:26,991 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-10-04 14:40:26,996 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-04 14:40:26,996 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-04 14:40:26,997 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-04 14:40:27,001 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/gemcutter/NewStatesSleep-VarAbsGlobalSyntactic.epf [2022-10-04 14:40:27,024 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-04 14:40:27,024 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-04 14:40:27,024 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-04 14:40:27,024 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-04 14:40:27,025 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-04 14:40:27,025 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-04 14:40:27,026 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-04 14:40:27,026 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-04 14:40:27,026 INFO L138 SettingsManager]: * Use SBE=true [2022-10-04 14:40:27,026 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-04 14:40:27,026 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-04 14:40:27,027 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-04 14:40:27,027 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-04 14:40:27,027 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-04 14:40:27,027 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-04 14:40:27,027 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-04 14:40:27,027 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-04 14:40:27,027 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-04 14:40:27,027 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-04 14:40:27,027 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-04 14:40:27,027 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-04 14:40:27,027 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-04 14:40:27,028 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-04 14:40:27,029 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-10-04 14:40:27,029 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-04 14:40:27,029 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-04 14:40:27,029 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-04 14:40:27,029 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-04 14:40:27,029 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-04 14:40:27,029 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-04 14:40:27,029 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-04 14:40:27,029 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-04 14:40:27,029 INFO L138 SettingsManager]: * Abstraction used for commutativity in POR=VARIABLES_GLOBAL [2022-10-04 14:40:27,030 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-10-04 14:40:27,030 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-04 14:40:27,030 INFO L138 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_ERROR_LOCATION [2022-10-04 14:40:27,030 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_NEW_STATES [2022-10-04 14:40:27,030 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-10-04 14:40:27,030 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-04 14:40:27,197 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-04 14:40:27,215 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-04 14:40:27,217 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-04 14:40:27,218 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-10-04 14:40:27,218 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-10-04 14:40:27,219 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/boogie-benchmarks-from-svcomp-memsafety-concurrent/thin002_power.oepc.line1141.bpl [2022-10-04 14:40:27,220 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/boogie-benchmarks-from-svcomp-memsafety-concurrent/thin002_power.oepc.line1141.bpl' [2022-10-04 14:40:27,268 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-04 14:40:27,269 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2022-10-04 14:40:27,270 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-04 14:40:27,271 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-04 14:40:27,271 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-04 14:40:27,281 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "thin002_power.oepc.line1141.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:40:27" (1/1) ... [2022-10-04 14:40:27,282 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "thin002_power.oepc.line1141.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:40:27" (1/1) ... [2022-10-04 14:40:27,310 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "thin002_power.oepc.line1141.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:40:27" (1/1) ... [2022-10-04 14:40:27,311 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "thin002_power.oepc.line1141.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:40:27" (1/1) ... [2022-10-04 14:40:27,325 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "thin002_power.oepc.line1141.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:40:27" (1/1) ... [2022-10-04 14:40:27,329 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "thin002_power.oepc.line1141.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:40:27" (1/1) ... [2022-10-04 14:40:27,332 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "thin002_power.oepc.line1141.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:40:27" (1/1) ... [2022-10-04 14:40:27,337 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-04 14:40:27,338 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-04 14:40:27,338 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-04 14:40:27,338 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-04 14:40:27,352 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "thin002_power.oepc.line1141.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:40:27" (1/1) ... [2022-10-04 14:40:27,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-04 14:40:27,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-04 14:40:27,384 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) [2022-10-04 14:40:27,386 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 [2022-10-04 14:40:27,424 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-10-04 14:40:27,424 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-10-04 14:40:27,424 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-10-04 14:40:27,424 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-10-04 14:40:27,424 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-10-04 14:40:27,424 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-10-04 14:40:27,424 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-10-04 14:40:27,424 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-10-04 14:40:27,425 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-04 14:40:27,425 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-04 14:40:27,426 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-10-04 14:40:27,611 INFO L234 CfgBuilder]: Building ICFG [2022-10-04 14:40:27,612 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-04 14:40:28,240 INFO L275 CfgBuilder]: Performing block encoding [2022-10-04 14:40:28,271 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-04 14:40:28,271 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-04 14:40:28,274 INFO L202 PluginConnector]: Adding new model thin002_power.oepc.line1141.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.10 02:40:28 BoogieIcfgContainer [2022-10-04 14:40:28,274 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-04 14:40:28,275 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-04 14:40:28,276 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-04 14:40:28,279 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-04 14:40:28,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "thin002_power.oepc.line1141.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:40:27" (1/2) ... [2022-10-04 14:40:28,280 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11f5fe84 and model type thin002_power.oepc.line1141.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.10 02:40:28, skipping insertion in model container [2022-10-04 14:40:28,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "thin002_power.oepc.line1141.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.10 02:40:28" (2/2) ... [2022-10-04 14:40:28,281 INFO L112 eAbstractionObserver]: Analyzing ICFG thin002_power.oepc.line1141.bpl [2022-10-04 14:40:28,290 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-10-04 14:40:28,297 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-04 14:40:28,298 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-04 14:40:28,302 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-10-04 14:40:28,443 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-10-04 14:40:28,514 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=<UNSUPPORTED>, UseSemiCommutativity=<UNSUPPORTED>, Solver=<NOT_USED>, SolverTimeout=<NOT_USED>] [2022-10-04 14:40:28,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-10-04 14:40:28,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-04 14:40:28,517 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) [2022-10-04 14:40:28,522 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 [2022-10-04 14:40:28,546 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-10-04 14:40:28,551 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0ASSERT_VIOLATIONASSERT ======== [2022-10-04 14:40:28,557 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;@4286de66, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-04 14:40:28,557 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-04 14:40:28,744 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-04 14:40:28,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-04 14:40:28,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1972512272, now seen corresponding path program 1 times [2022-10-04 14:40:28,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-04 14:40:28,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012675984] [2022-10-04 14:40:28,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-04 14:40:28,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-04 14:40:28,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-04 14:40:29,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-04 14:40:29,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-04 14:40:29,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012675984] [2022-10-04 14:40:29,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012675984] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-04 14:40:29,054 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-04 14:40:29,054 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-04 14:40:29,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34280038] [2022-10-04 14:40:29,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-04 14:40:29,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-04 14:40:29,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-04 14:40:29,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-04 14:40:29,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-04 14:40:29,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-04 14:40:29,080 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-04 14:40:29,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 104.0) internal successors, (208), 2 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-04 14:40:29,081 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.