/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label26.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 00:05:32,320 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 00:05:32,333 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 00:05:32,382 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 00:05:32,427 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Default.epf [2022-01-10 00:05:32,447 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 00:05:32,447 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 00:05:32,451 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 00:05:32,451 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 00:05:32,451 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 00:05:32,452 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 00:05:32,452 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 00:05:32,452 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 00:05:32,452 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 00:05:32,452 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 00:05:32,453 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 00:05:32,453 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 00:05:32,453 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 00:05:32,453 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 00:05:32,453 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 00:05:32,454 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 00:05:32,454 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 00:05:32,454 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 00:05:32,454 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 00:05:32,454 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 00:05:32,454 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 00:05:32,454 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 00:05:32,454 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 00:05:32,454 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 00:05:32,455 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 00:05:32,455 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 00:05:32,455 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 00:05:32,455 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 00:05:32,455 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 00:05:32,455 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 00:05:32,455 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 00:05:32,640 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 00:05:32,652 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 00:05:32,654 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 00:05:32,654 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 00:05:32,655 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 00:05:32,655 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label26.c [2022-01-10 00:05:32,692 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/684efa88b/c2dab3e1a25c42cd922ba6bb5abb7aa3/FLAGd15ab2b4f [2022-01-10 00:05:33,252 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 00:05:33,252 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label26.c [2022-01-10 00:05:33,278 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/684efa88b/c2dab3e1a25c42cd922ba6bb5abb7aa3/FLAGd15ab2b4f [2022-01-10 00:05:33,441 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/684efa88b/c2dab3e1a25c42cd922ba6bb5abb7aa3 [2022-01-10 00:05:33,443 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 00:05:33,445 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 00:05:33,456 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 00:05:33,456 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 00:05:33,472 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 00:05:33,472 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:05:33" (1/1) ... [2022-01-10 00:05:33,473 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19367a83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:05:33, skipping insertion in model container [2022-01-10 00:05:33,473 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:05:33" (1/1) ... [2022-01-10 00:05:33,478 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 00:05:33,567 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 00:05:33,773 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label26.c[5703,5716] [2022-01-10 00:05:34,344 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 00:05:34,349 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 00:05:34,372 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label26.c[5703,5716] [2022-01-10 00:05:34,620 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 00:05:34,635 INFO L208 MainTranslator]: Completed translation [2022-01-10 00:05:34,636 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:05:34 WrapperNode [2022-01-10 00:05:34,637 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 00:05:34,638 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 00:05:34,638 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 00:05:34,638 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 00:05:34,643 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:05:34" (1/1) ... [2022-01-10 00:05:34,684 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:05:34" (1/1) ... [2022-01-10 00:05:34,965 INFO L137 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 4757 [2022-01-10 00:05:34,966 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 00:05:34,966 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 00:05:34,966 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 00:05:34,966 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 00:05:34,972 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:05:34" (1/1) ... [2022-01-10 00:05:34,973 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:05:34" (1/1) ... [2022-01-10 00:05:35,023 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:05:34" (1/1) ... [2022-01-10 00:05:35,024 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:05:34" (1/1) ... [2022-01-10 00:05:35,146 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:05:34" (1/1) ... [2022-01-10 00:05:35,227 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:05:34" (1/1) ... [2022-01-10 00:05:35,268 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:05:34" (1/1) ... [2022-01-10 00:05:35,330 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 00:05:35,332 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 00:05:35,332 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 00:05:35,332 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 00:05:35,333 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:05:34" (1/1) ... [2022-01-10 00:05:35,337 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 00:05:35,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 00:05:35,355 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 00:05:35,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 00:05:35,432 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 00:05:35,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-10 00:05:35,433 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 00:05:35,433 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 00:05:35,494 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 00:05:35,496 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 00:05:38,271 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 00:05:38,284 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 00:05:38,284 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 00:05:38,287 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:05:38 BoogieIcfgContainer [2022-01-10 00:05:38,287 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 00:05:38,289 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 00:05:38,289 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 00:05:38,291 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 00:05:38,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 12:05:33" (1/3) ... [2022-01-10 00:05:38,292 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68657270 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:05:38, skipping insertion in model container [2022-01-10 00:05:38,292 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:05:34" (2/3) ... [2022-01-10 00:05:38,293 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68657270 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:05:38, skipping insertion in model container [2022-01-10 00:05:38,293 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:05:38" (3/3) ... [2022-01-10 00:05:38,295 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem12_label26.c [2022-01-10 00:05:38,301 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 00:05:38,301 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 00:05:38,343 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 00:05:38,350 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 00:05:38,350 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 00:05:38,372 INFO L276 IsEmpty]: Start isEmpty. Operand has 818 states, 816 states have (on average 1.9178921568627452) internal successors, (1565), 817 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:05:38,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-01-10 00:05:38,380 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:05:38,381 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:05:38,381 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:05:38,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:05:38,385 INFO L85 PathProgramCache]: Analyzing trace with hash -2068820151, now seen corresponding path program 1 times [2022-01-10 00:05:38,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:05:38,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929343207] [2022-01-10 00:05:38,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:05:38,391 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:05:38,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:05:38,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:05:38,599 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:05:38,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929343207] [2022-01-10 00:05:38,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929343207] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:05:38,600 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:05:38,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 00:05:38,602 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809910327] [2022-01-10 00:05:38,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:05:38,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:05:38,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:05:38,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:05:38,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:05:38,633 INFO L87 Difference]: Start difference. First operand has 818 states, 816 states have (on average 1.9178921568627452) internal successors, (1565), 817 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 2 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:05:41,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:05:41,561 INFO L93 Difference]: Finished difference Result 2388 states and 4629 transitions. [2022-01-10 00:05:41,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:05:41,563 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 2 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2022-01-10 00:05:41,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:05:41,579 INFO L225 Difference]: With dead ends: 2388 [2022-01-10 00:05:41,579 INFO L226 Difference]: Without dead ends: 1506 [2022-01-10 00:05:41,584 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:05:41,586 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 852 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 2437 mSolverCounterSat, 771 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 852 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 3208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 771 IncrementalHoareTripleChecker+Valid, 2437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-01-10 00:05:41,587 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [852 Valid, 156 Invalid, 3208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [771 Valid, 2437 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-01-10 00:05:41,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1506 states. [2022-01-10 00:05:41,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1506 to 1506. [2022-01-10 00:05:41,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1506 states, 1505 states have (on average 1.8458471760797341) internal successors, (2778), 1505 states have internal predecessors, (2778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:05:41,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1506 states to 1506 states and 2778 transitions. [2022-01-10 00:05:41,654 INFO L78 Accepts]: Start accepts. Automaton has 1506 states and 2778 transitions. Word has length 45 [2022-01-10 00:05:41,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:05:41,655 INFO L470 AbstractCegarLoop]: Abstraction has 1506 states and 2778 transitions. [2022-01-10 00:05:41,655 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 2 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:05:41,655 INFO L276 IsEmpty]: Start isEmpty. Operand 1506 states and 2778 transitions. [2022-01-10 00:05:41,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-01-10 00:05:41,657 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:05:41,657 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:05:41,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 00:05:41,658 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:05:41,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:05:41,658 INFO L85 PathProgramCache]: Analyzing trace with hash -1199481514, now seen corresponding path program 1 times [2022-01-10 00:05:41,658 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:05:41,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728773677] [2022-01-10 00:05:41,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:05:41,659 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:05:41,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:05:41,723 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:05:41,723 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:05:41,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728773677] [2022-01-10 00:05:41,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728773677] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:05:41,724 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:05:41,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 00:05:41,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966849562] [2022-01-10 00:05:41,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:05:41,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:05:41,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:05:41,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:05:41,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:05:41,726 INFO L87 Difference]: Start difference. First operand 1506 states and 2778 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:05:44,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:05:44,382 INFO L93 Difference]: Finished difference Result 3761 states and 6893 transitions. [2022-01-10 00:05:44,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:05:44,383 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2022-01-10 00:05:44,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:05:44,390 INFO L225 Difference]: With dead ends: 3761 [2022-01-10 00:05:44,390 INFO L226 Difference]: Without dead ends: 2257 [2022-01-10 00:05:44,391 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:05:44,392 INFO L933 BasicCegarLoop]: 442 mSDtfsCounter, 780 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1995 mSolverCounterSat, 864 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 780 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 2859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 864 IncrementalHoareTripleChecker+Valid, 1995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-01-10 00:05:44,393 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [780 Valid, 448 Invalid, 2859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [864 Valid, 1995 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-01-10 00:05:44,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2257 states. [2022-01-10 00:05:44,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2257 to 2257. [2022-01-10 00:05:44,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2257 states, 2256 states have (on average 1.4419326241134751) internal successors, (3253), 2256 states have internal predecessors, (3253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:05:44,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2257 states to 2257 states and 3253 transitions. [2022-01-10 00:05:44,424 INFO L78 Accepts]: Start accepts. Automaton has 2257 states and 3253 transitions. Word has length 114 [2022-01-10 00:05:44,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:05:44,426 INFO L470 AbstractCegarLoop]: Abstraction has 2257 states and 3253 transitions. [2022-01-10 00:05:44,427 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:05:44,427 INFO L276 IsEmpty]: Start isEmpty. Operand 2257 states and 3253 transitions. [2022-01-10 00:05:44,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-01-10 00:05:44,432 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:05:44,432 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:05:44,432 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 00:05:44,433 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:05:44,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:05:44,433 INFO L85 PathProgramCache]: Analyzing trace with hash 937002619, now seen corresponding path program 1 times [2022-01-10 00:05:44,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:05:44,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035224904] [2022-01-10 00:05:44,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:05:44,434 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:05:44,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:05:44,574 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:05:44,575 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:05:44,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035224904] [2022-01-10 00:05:44,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035224904] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:05:44,575 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:05:44,575 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:05:44,575 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840059675] [2022-01-10 00:05:44,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:05:44,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 00:05:44,576 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:05:44,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 00:05:44,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 00:05:44,577 INFO L87 Difference]: Start difference. First operand 2257 states and 3253 transitions. Second operand has 4 states, 4 states have (on average 29.0) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:05:47,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:05:47,506 INFO L93 Difference]: Finished difference Result 6802 states and 9791 transitions. [2022-01-10 00:05:47,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 00:05:47,507 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2022-01-10 00:05:47,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:05:47,521 INFO L225 Difference]: With dead ends: 6802 [2022-01-10 00:05:47,522 INFO L226 Difference]: Without dead ends: 4510 [2022-01-10 00:05:47,525 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 00:05:47,530 INFO L933 BasicCegarLoop]: 686 mSDtfsCounter, 705 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 3105 mSolverCounterSat, 729 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 705 SdHoareTripleChecker+Valid, 700 SdHoareTripleChecker+Invalid, 3834 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 729 IncrementalHoareTripleChecker+Valid, 3105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-01-10 00:05:47,532 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [705 Valid, 700 Invalid, 3834 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [729 Valid, 3105 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-01-10 00:05:47,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4510 states. [2022-01-10 00:05:47,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4510 to 3759. [2022-01-10 00:05:47,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3759 states, 3758 states have (on average 1.2714209686003193) internal successors, (4778), 3758 states have internal predecessors, (4778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:05:47,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3759 states to 3759 states and 4778 transitions. [2022-01-10 00:05:47,583 INFO L78 Accepts]: Start accepts. Automaton has 3759 states and 4778 transitions. Word has length 116 [2022-01-10 00:05:47,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:05:47,585 INFO L470 AbstractCegarLoop]: Abstraction has 3759 states and 4778 transitions. [2022-01-10 00:05:47,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:05:47,585 INFO L276 IsEmpty]: Start isEmpty. Operand 3759 states and 4778 transitions. [2022-01-10 00:05:47,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2022-01-10 00:05:47,591 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:05:47,591 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:05:47,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 00:05:47,592 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:05:47,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:05:47,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1321864166, now seen corresponding path program 1 times [2022-01-10 00:05:47,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:05:47,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419924401] [2022-01-10 00:05:47,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:05:47,593 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:05:47,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:05:47,744 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-01-10 00:05:47,744 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:05:47,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419924401] [2022-01-10 00:05:47,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419924401] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:05:47,744 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:05:47,744 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:05:47,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043203824] [2022-01-10 00:05:47,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:05:47,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 00:05:47,745 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:05:47,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 00:05:47,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 00:05:47,746 INFO L87 Difference]: Start difference. First operand 3759 states and 4778 transitions. Second operand has 4 states, 4 states have (on average 47.0) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:05:50,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:05:50,638 INFO L93 Difference]: Finished difference Result 9808 states and 12774 transitions. [2022-01-10 00:05:50,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 00:05:50,639 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 47.0) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 257 [2022-01-10 00:05:50,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:05:50,654 INFO L225 Difference]: With dead ends: 9808 [2022-01-10 00:05:50,655 INFO L226 Difference]: Without dead ends: 6014 [2022-01-10 00:05:50,659 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 00:05:50,660 INFO L933 BasicCegarLoop]: 311 mSDtfsCounter, 776 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 3718 mSolverCounterSat, 542 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 776 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 4260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 542 IncrementalHoareTripleChecker+Valid, 3718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-01-10 00:05:50,660 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [776 Valid, 327 Invalid, 4260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [542 Valid, 3718 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-01-10 00:05:50,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6014 states. [2022-01-10 00:05:50,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6014 to 6012. [2022-01-10 00:05:50,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6012 states, 6011 states have (on average 1.222758276493096) internal successors, (7350), 6011 states have internal predecessors, (7350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:05:50,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6012 states to 6012 states and 7350 transitions. [2022-01-10 00:05:50,822 INFO L78 Accepts]: Start accepts. Automaton has 6012 states and 7350 transitions. Word has length 257 [2022-01-10 00:05:50,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:05:50,823 INFO L470 AbstractCegarLoop]: Abstraction has 6012 states and 7350 transitions. [2022-01-10 00:05:50,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.0) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:05:50,823 INFO L276 IsEmpty]: Start isEmpty. Operand 6012 states and 7350 transitions. [2022-01-10 00:05:50,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2022-01-10 00:05:50,825 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:05:50,825 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:05:50,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 00:05:50,825 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:05:50,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:05:50,827 INFO L85 PathProgramCache]: Analyzing trace with hash 352413707, now seen corresponding path program 1 times [2022-01-10 00:05:50,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:05:50,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095929152] [2022-01-10 00:05:50,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:05:50,828 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:05:50,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:05:50,965 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-01-10 00:05:50,965 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:05:50,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095929152] [2022-01-10 00:05:50,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095929152] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:05:50,966 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:05:50,966 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:05:50,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427648085] [2022-01-10 00:05:50,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:05:50,967 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 00:05:50,967 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:05:50,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 00:05:50,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 00:05:50,968 INFO L87 Difference]: Start difference. First operand 6012 states and 7350 transitions. Second operand has 4 states, 4 states have (on average 54.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:05:53,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:05:53,907 INFO L93 Difference]: Finished difference Result 18030 states and 22021 transitions. [2022-01-10 00:05:53,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 00:05:53,908 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 54.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 258 [2022-01-10 00:05:53,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:05:53,944 INFO L225 Difference]: With dead ends: 18030 [2022-01-10 00:05:53,944 INFO L226 Difference]: Without dead ends: 12020 [2022-01-10 00:05:53,967 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 00:05:53,967 INFO L933 BasicCegarLoop]: 585 mSDtfsCounter, 2026 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 4470 mSolverCounterSat, 550 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2026 SdHoareTripleChecker+Valid, 605 SdHoareTripleChecker+Invalid, 5020 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 550 IncrementalHoareTripleChecker+Valid, 4470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-01-10 00:05:53,968 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2026 Valid, 605 Invalid, 5020 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [550 Valid, 4470 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-01-10 00:05:53,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12020 states. [2022-01-10 00:05:54,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12020 to 10518. [2022-01-10 00:05:54,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10518 states, 10517 states have (on average 1.156223257582961) internal successors, (12160), 10517 states have internal predecessors, (12160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:05:54,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10518 states to 10518 states and 12160 transitions. [2022-01-10 00:05:54,122 INFO L78 Accepts]: Start accepts. Automaton has 10518 states and 12160 transitions. Word has length 258 [2022-01-10 00:05:54,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:05:54,123 INFO L470 AbstractCegarLoop]: Abstraction has 10518 states and 12160 transitions. [2022-01-10 00:05:54,123 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:05:54,123 INFO L276 IsEmpty]: Start isEmpty. Operand 10518 states and 12160 transitions. [2022-01-10 00:05:54,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2022-01-10 00:05:54,128 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:05:54,129 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:05:54,129 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 00:05:54,129 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:05:54,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:05:54,130 INFO L85 PathProgramCache]: Analyzing trace with hash -373708990, now seen corresponding path program 1 times [2022-01-10 00:05:54,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:05:54,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75437453] [2022-01-10 00:05:54,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:05:54,134 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:05:54,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:05:54,337 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 306 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-01-10 00:05:54,337 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:05:54,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75437453] [2022-01-10 00:05:54,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75437453] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:05:54,338 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:05:54,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:05:54,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415881467] [2022-01-10 00:05:54,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:05:54,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:05:54,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:05:54,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:05:54,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:05:54,340 INFO L87 Difference]: Start difference. First operand 10518 states and 12160 transitions. Second operand has 3 states, 3 states have (on average 99.33333333333333) internal successors, (298), 3 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:05:57,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:05:57,197 INFO L93 Difference]: Finished difference Result 30797 states and 35716 transitions. [2022-01-10 00:05:57,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:05:57,198 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 99.33333333333333) internal successors, (298), 3 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 340 [2022-01-10 00:05:57,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:05:57,232 INFO L225 Difference]: With dead ends: 30797 [2022-01-10 00:05:57,232 INFO L226 Difference]: Without dead ends: 20281 [2022-01-10 00:05:57,244 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:05:57,245 INFO L933 BasicCegarLoop]: 1378 mSDtfsCounter, 667 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2720 mSolverCounterSat, 361 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 667 SdHoareTripleChecker+Valid, 1386 SdHoareTripleChecker+Invalid, 3081 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 361 IncrementalHoareTripleChecker+Valid, 2720 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-01-10 00:05:57,245 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [667 Valid, 1386 Invalid, 3081 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [361 Valid, 2720 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-01-10 00:05:57,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20281 states. [2022-01-10 00:05:57,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20281 to 18779. [2022-01-10 00:05:57,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18779 states, 18778 states have (on average 1.1468207476834593) internal successors, (21535), 18778 states have internal predecessors, (21535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:05:57,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18779 states to 18779 states and 21535 transitions. [2022-01-10 00:05:57,495 INFO L78 Accepts]: Start accepts. Automaton has 18779 states and 21535 transitions. Word has length 340 [2022-01-10 00:05:57,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:05:57,504 INFO L470 AbstractCegarLoop]: Abstraction has 18779 states and 21535 transitions. [2022-01-10 00:05:57,505 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.33333333333333) internal successors, (298), 3 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:05:57,505 INFO L276 IsEmpty]: Start isEmpty. Operand 18779 states and 21535 transitions. [2022-01-10 00:05:57,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2022-01-10 00:05:57,508 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:05:57,509 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:05:57,509 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 00:05:57,509 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:05:57,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:05:57,509 INFO L85 PathProgramCache]: Analyzing trace with hash 1967947020, now seen corresponding path program 1 times [2022-01-10 00:05:57,510 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:05:57,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759176088] [2022-01-10 00:05:57,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:05:57,510 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:05:57,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:05:57,629 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 265 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-01-10 00:05:57,629 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:05:57,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759176088] [2022-01-10 00:05:57,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759176088] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:05:57,629 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:05:57,630 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:05:57,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342453925] [2022-01-10 00:05:57,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:05:57,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:05:57,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:05:57,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:05:57,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:05:57,631 INFO L87 Difference]: Start difference. First operand 18779 states and 21535 transitions. Second operand has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:06:00,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:06:00,090 INFO L93 Difference]: Finished difference Result 45817 states and 53206 transitions. [2022-01-10 00:06:00,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:06:00,090 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 344 [2022-01-10 00:06:00,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:06:00,140 INFO L225 Difference]: With dead ends: 45817 [2022-01-10 00:06:00,140 INFO L226 Difference]: Without dead ends: 27040 [2022-01-10 00:06:00,159 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:06:00,162 INFO L933 BasicCegarLoop]: 1196 mSDtfsCounter, 704 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2238 mSolverCounterSat, 433 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 704 SdHoareTripleChecker+Valid, 1204 SdHoareTripleChecker+Invalid, 2671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 433 IncrementalHoareTripleChecker+Valid, 2238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-10 00:06:00,162 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [704 Valid, 1204 Invalid, 2671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [433 Valid, 2238 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-01-10 00:06:00,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27040 states. [2022-01-10 00:06:00,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27040 to 27040. [2022-01-10 00:06:00,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27040 states, 27039 states have (on average 1.1243759014756463) internal successors, (30402), 27039 states have internal predecessors, (30402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:06:00,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27040 states to 27040 states and 30402 transitions. [2022-01-10 00:06:00,484 INFO L78 Accepts]: Start accepts. Automaton has 27040 states and 30402 transitions. Word has length 344 [2022-01-10 00:06:00,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:06:00,485 INFO L470 AbstractCegarLoop]: Abstraction has 27040 states and 30402 transitions. [2022-01-10 00:06:00,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:06:00,485 INFO L276 IsEmpty]: Start isEmpty. Operand 27040 states and 30402 transitions. [2022-01-10 00:06:00,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2022-01-10 00:06:00,491 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:06:00,492 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:06:00,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 00:06:00,492 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:06:00,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:06:00,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1114951868, now seen corresponding path program 1 times [2022-01-10 00:06:00,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:06:00,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023809859] [2022-01-10 00:06:00,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:06:00,494 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:06:00,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:06:00,711 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2022-01-10 00:06:00,711 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:06:00,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023809859] [2022-01-10 00:06:00,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023809859] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:06:00,712 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:06:00,712 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:06:00,712 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982317172] [2022-01-10 00:06:00,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:06:00,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:06:00,713 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:06:00,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:06:00,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:06:00,713 INFO L87 Difference]: Start difference. First operand 27040 states and 30402 transitions. Second operand has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:06:03,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:06:03,448 INFO L93 Difference]: Finished difference Result 66845 states and 75537 transitions. [2022-01-10 00:06:03,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:06:03,448 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 376 [2022-01-10 00:06:03,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:06:03,509 INFO L225 Difference]: With dead ends: 66845 [2022-01-10 00:06:03,509 INFO L226 Difference]: Without dead ends: 39807 [2022-01-10 00:06:03,536 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:06:03,537 INFO L933 BasicCegarLoop]: 397 mSDtfsCounter, 731 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2520 mSolverCounterSat, 436 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 731 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 2956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 436 IncrementalHoareTripleChecker+Valid, 2520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-01-10 00:06:03,537 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [731 Valid, 404 Invalid, 2956 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [436 Valid, 2520 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-01-10 00:06:03,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39807 states. [2022-01-10 00:06:03,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39807 to 38305. [2022-01-10 00:06:03,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38305 states, 38304 states have (on average 1.1223370927318295) internal successors, (42990), 38304 states have internal predecessors, (42990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:06:03,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38305 states to 38305 states and 42990 transitions. [2022-01-10 00:06:03,943 INFO L78 Accepts]: Start accepts. Automaton has 38305 states and 42990 transitions. Word has length 376 [2022-01-10 00:06:03,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:06:03,946 INFO L470 AbstractCegarLoop]: Abstraction has 38305 states and 42990 transitions. [2022-01-10 00:06:03,946 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:06:03,946 INFO L276 IsEmpty]: Start isEmpty. Operand 38305 states and 42990 transitions. [2022-01-10 00:06:03,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2022-01-10 00:06:03,952 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:06:03,952 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:06:03,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 00:06:03,954 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:06:03,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:06:03,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1038900828, now seen corresponding path program 1 times [2022-01-10 00:06:03,957 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:06:03,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737788289] [2022-01-10 00:06:03,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:06:03,957 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:06:04,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:06:04,078 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 320 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-01-10 00:06:04,078 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:06:04,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737788289] [2022-01-10 00:06:04,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737788289] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:06:04,079 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:06:04,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:06:04,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588167170] [2022-01-10 00:06:04,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:06:04,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:06:04,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:06:04,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:06:04,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:06:04,081 INFO L87 Difference]: Start difference. First operand 38305 states and 42990 transitions. Second operand has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:06:06,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:06:06,747 INFO L93 Difference]: Finished difference Result 94632 states and 107674 transitions. [2022-01-10 00:06:06,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:06:06,747 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 383 [2022-01-10 00:06:06,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:06:06,818 INFO L225 Difference]: With dead ends: 94632 [2022-01-10 00:06:06,819 INFO L226 Difference]: Without dead ends: 56329 [2022-01-10 00:06:06,847 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:06:06,848 INFO L933 BasicCegarLoop]: 1251 mSDtfsCounter, 704 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2128 mSolverCounterSat, 688 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 704 SdHoareTripleChecker+Valid, 1259 SdHoareTripleChecker+Invalid, 2816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 688 IncrementalHoareTripleChecker+Valid, 2128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-01-10 00:06:06,848 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [704 Valid, 1259 Invalid, 2816 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [688 Valid, 2128 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-01-10 00:06:06,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56329 states. [2022-01-10 00:06:08,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56329 to 54076. [2022-01-10 00:06:08,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54076 states, 54075 states have (on average 1.1104761904761904) internal successors, (60049), 54075 states have internal predecessors, (60049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:06:08,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54076 states to 54076 states and 60049 transitions. [2022-01-10 00:06:08,265 INFO L78 Accepts]: Start accepts. Automaton has 54076 states and 60049 transitions. Word has length 383 [2022-01-10 00:06:08,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:06:08,265 INFO L470 AbstractCegarLoop]: Abstraction has 54076 states and 60049 transitions. [2022-01-10 00:06:08,265 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:06:08,265 INFO L276 IsEmpty]: Start isEmpty. Operand 54076 states and 60049 transitions. [2022-01-10 00:06:08,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 467 [2022-01-10 00:06:08,273 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:06:08,273 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:06:08,273 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 00:06:08,273 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:06:08,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:06:08,274 INFO L85 PathProgramCache]: Analyzing trace with hash 301269280, now seen corresponding path program 1 times [2022-01-10 00:06:08,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:06:08,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107894193] [2022-01-10 00:06:08,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:06:08,274 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:06:08,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:06:08,455 INFO L134 CoverageAnalysis]: Checked inductivity of 672 backedges. 419 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2022-01-10 00:06:08,456 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:06:08,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107894193] [2022-01-10 00:06:08,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107894193] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:06:08,456 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:06:08,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:06:08,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759130701] [2022-01-10 00:06:08,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:06:08,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:06:08,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:06:08,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:06:08,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:06:08,458 INFO L87 Difference]: Start difference. First operand 54076 states and 60049 transitions. Second operand has 3 states, 3 states have (on average 94.33333333333333) internal successors, (283), 3 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:06:11,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:06:11,271 INFO L93 Difference]: Finished difference Result 137439 states and 153697 transitions. [2022-01-10 00:06:11,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:06:11,271 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 94.33333333333333) internal successors, (283), 3 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 466 [2022-01-10 00:06:11,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:06:11,362 INFO L225 Difference]: With dead ends: 137439 [2022-01-10 00:06:11,362 INFO L226 Difference]: Without dead ends: 79610 [2022-01-10 00:06:11,399 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:06:11,400 INFO L933 BasicCegarLoop]: 1279 mSDtfsCounter, 705 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2206 mSolverCounterSat, 611 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 705 SdHoareTripleChecker+Valid, 1287 SdHoareTripleChecker+Invalid, 2817 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 611 IncrementalHoareTripleChecker+Valid, 2206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-01-10 00:06:11,400 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [705 Valid, 1287 Invalid, 2817 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [611 Valid, 2206 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-01-10 00:06:11,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79610 states. [2022-01-10 00:06:12,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79610 to 78108. [2022-01-10 00:06:12,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78108 states, 78107 states have (on average 1.0931542627421358) internal successors, (85383), 78107 states have internal predecessors, (85383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:06:12,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78108 states to 78108 states and 85383 transitions. [2022-01-10 00:06:12,599 INFO L78 Accepts]: Start accepts. Automaton has 78108 states and 85383 transitions. Word has length 466 [2022-01-10 00:06:12,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:06:12,599 INFO L470 AbstractCegarLoop]: Abstraction has 78108 states and 85383 transitions. [2022-01-10 00:06:12,600 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.33333333333333) internal successors, (283), 3 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:06:12,600 INFO L276 IsEmpty]: Start isEmpty. Operand 78108 states and 85383 transitions. [2022-01-10 00:06:12,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 533 [2022-01-10 00:06:12,643 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:06:12,644 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:06:12,644 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 00:06:12,644 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:06:12,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:06:12,645 INFO L85 PathProgramCache]: Analyzing trace with hash -2086807197, now seen corresponding path program 1 times [2022-01-10 00:06:12,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:06:12,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385822836] [2022-01-10 00:06:12,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:06:12,645 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:06:12,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:06:12,853 INFO L134 CoverageAnalysis]: Checked inductivity of 754 backedges. 414 proven. 108 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2022-01-10 00:06:12,853 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:06:12,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385822836] [2022-01-10 00:06:12,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385822836] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 00:06:12,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [709230634] [2022-01-10 00:06:12,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:06:12,853 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 00:06:12,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 00:06:12,855 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 00:06:12,869 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-10 00:06:13,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:06:13,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 697 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 00:06:13,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 00:06:13,927 INFO L134 CoverageAnalysis]: Checked inductivity of 754 backedges. 457 proven. 0 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2022-01-10 00:06:13,928 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 00:06:13,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [709230634] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:06:13,928 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 00:06:13,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-01-10 00:06:13,928 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047416205] [2022-01-10 00:06:13,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:06:13,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:06:13,929 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:06:13,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:06:13,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 00:06:13,930 INFO L87 Difference]: Start difference. First operand 78108 states and 85383 transitions. Second operand has 3 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:06:16,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:06:16,859 INFO L93 Difference]: Finished difference Result 166728 states and 184598 transitions. [2022-01-10 00:06:16,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:06:16,860 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 532 [2022-01-10 00:06:16,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:06:17,179 INFO L225 Difference]: With dead ends: 166728 [2022-01-10 00:06:17,180 INFO L226 Difference]: Without dead ends: 88622 [2022-01-10 00:06:17,222 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 535 GetRequests, 531 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 00:06:17,230 INFO L933 BasicCegarLoop]: 1367 mSDtfsCounter, 650 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2120 mSolverCounterSat, 581 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 650 SdHoareTripleChecker+Valid, 1375 SdHoareTripleChecker+Invalid, 2701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 581 IncrementalHoareTripleChecker+Valid, 2120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-01-10 00:06:17,230 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [650 Valid, 1375 Invalid, 2701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [581 Valid, 2120 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-01-10 00:06:17,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88622 states. [2022-01-10 00:06:18,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88622 to 85618. [2022-01-10 00:06:18,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85618 states, 85617 states have (on average 1.0882067813635143) internal successors, (93169), 85617 states have internal predecessors, (93169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:06:18,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85618 states to 85618 states and 93169 transitions. [2022-01-10 00:06:18,487 INFO L78 Accepts]: Start accepts. Automaton has 85618 states and 93169 transitions. Word has length 532 [2022-01-10 00:06:18,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:06:18,488 INFO L470 AbstractCegarLoop]: Abstraction has 85618 states and 93169 transitions. [2022-01-10 00:06:18,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:06:18,488 INFO L276 IsEmpty]: Start isEmpty. Operand 85618 states and 93169 transitions. [2022-01-10 00:06:18,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 630 [2022-01-10 00:06:18,522 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:06:18,523 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:06:18,556 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-10 00:06:18,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-01-10 00:06:18,741 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:06:18,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:06:18,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1856492439, now seen corresponding path program 1 times [2022-01-10 00:06:18,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:06:18,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935806319] [2022-01-10 00:06:18,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:06:18,742 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:06:18,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:06:19,116 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 383 proven. 0 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2022-01-10 00:06:19,117 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:06:19,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935806319] [2022-01-10 00:06:19,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935806319] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:06:19,117 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:06:19,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:06:19,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459369872] [2022-01-10 00:06:19,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:06:19,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:06:19,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:06:19,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:06:19,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:06:19,118 INFO L87 Difference]: Start difference. First operand 85618 states and 93169 transitions. Second operand has 3 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:06:22,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:06:22,280 INFO L93 Difference]: Finished difference Result 216296 states and 235562 transitions. [2022-01-10 00:06:22,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:06:22,281 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 629 [2022-01-10 00:06:22,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:06:22,483 INFO L225 Difference]: With dead ends: 216296 [2022-01-10 00:06:22,483 INFO L226 Difference]: Without dead ends: 130680 [2022-01-10 00:06:22,553 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:06:22,554 INFO L933 BasicCegarLoop]: 528 mSDtfsCounter, 475 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2380 mSolverCounterSat, 528 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 475 SdHoareTripleChecker+Valid, 535 SdHoareTripleChecker+Invalid, 2908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 528 IncrementalHoareTripleChecker+Valid, 2380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-01-10 00:06:22,554 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [475 Valid, 535 Invalid, 2908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [528 Valid, 2380 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-01-10 00:06:22,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130680 states. [2022-01-10 00:06:23,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130680 to 125421. [2022-01-10 00:06:24,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125421 states, 125420 states have (on average 1.0795008770531016) internal successors, (135391), 125420 states have internal predecessors, (135391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:06:24,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125421 states to 125421 states and 135391 transitions. [2022-01-10 00:06:24,376 INFO L78 Accepts]: Start accepts. Automaton has 125421 states and 135391 transitions. Word has length 629 [2022-01-10 00:06:24,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:06:24,376 INFO L470 AbstractCegarLoop]: Abstraction has 125421 states and 135391 transitions. [2022-01-10 00:06:24,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:06:24,377 INFO L276 IsEmpty]: Start isEmpty. Operand 125421 states and 135391 transitions. [2022-01-10 00:06:24,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 632 [2022-01-10 00:06:24,397 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:06:24,399 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:06:24,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 00:06:24,399 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:06:24,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:06:24,399 INFO L85 PathProgramCache]: Analyzing trace with hash 697090894, now seen corresponding path program 1 times [2022-01-10 00:06:24,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:06:24,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592446382] [2022-01-10 00:06:24,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:06:24,400 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:06:24,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:06:24,662 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 385 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-01-10 00:06:24,662 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:06:24,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592446382] [2022-01-10 00:06:24,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592446382] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:06:24,662 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:06:24,663 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:06:24,663 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425717499] [2022-01-10 00:06:24,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:06:24,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:06:24,663 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:06:24,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:06:24,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:06:24,664 INFO L87 Difference]: Start difference. First operand 125421 states and 135391 transitions. Second operand has 3 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:06:28,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:06:28,010 INFO L93 Difference]: Finished difference Result 295900 states and 319953 transitions. [2022-01-10 00:06:28,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:06:28,010 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 631 [2022-01-10 00:06:28,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:06:28,233 INFO L225 Difference]: With dead ends: 295900 [2022-01-10 00:06:28,233 INFO L226 Difference]: Without dead ends: 170481 [2022-01-10 00:06:28,274 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:06:28,275 INFO L933 BasicCegarLoop]: 1288 mSDtfsCounter, 436 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2325 mSolverCounterSat, 482 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 436 SdHoareTripleChecker+Valid, 1296 SdHoareTripleChecker+Invalid, 2807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 482 IncrementalHoareTripleChecker+Valid, 2325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-01-10 00:06:28,275 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [436 Valid, 1296 Invalid, 2807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [482 Valid, 2325 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-01-10 00:06:28,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170481 states. [2022-01-10 00:06:30,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170481 to 159967. [2022-01-10 00:06:30,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159967 states, 159966 states have (on average 1.072165335133716) internal successors, (171510), 159966 states have internal predecessors, (171510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:06:30,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159967 states to 159967 states and 171510 transitions. [2022-01-10 00:06:30,407 INFO L78 Accepts]: Start accepts. Automaton has 159967 states and 171510 transitions. Word has length 631 [2022-01-10 00:06:30,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:06:30,407 INFO L470 AbstractCegarLoop]: Abstraction has 159967 states and 171510 transitions. [2022-01-10 00:06:30,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:06:30,408 INFO L276 IsEmpty]: Start isEmpty. Operand 159967 states and 171510 transitions. [2022-01-10 00:06:30,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 775 [2022-01-10 00:06:30,441 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:06:30,441 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:06:30,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 00:06:30,442 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:06:30,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:06:30,442 INFO L85 PathProgramCache]: Analyzing trace with hash 269841937, now seen corresponding path program 1 times [2022-01-10 00:06:30,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:06:30,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034679207] [2022-01-10 00:06:30,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:06:30,443 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:06:30,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:06:30,864 INFO L134 CoverageAnalysis]: Checked inductivity of 859 backedges. 700 proven. 0 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2022-01-10 00:06:30,864 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:06:30,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034679207] [2022-01-10 00:06:30,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034679207] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:06:30,865 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:06:30,865 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:06:30,865 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481895049] [2022-01-10 00:06:30,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:06:30,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:06:30,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:06:30,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:06:30,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:06:30,867 INFO L87 Difference]: Start difference. First operand 159967 states and 171510 transitions. Second operand has 3 states, 3 states have (on average 205.66666666666666) internal successors, (617), 3 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:06:34,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:06:34,735 INFO L93 Difference]: Finished difference Result 319932 states and 343018 transitions. [2022-01-10 00:06:34,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:06:34,736 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 205.66666666666666) internal successors, (617), 3 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 774 [2022-01-10 00:06:34,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:06:35,051 INFO L225 Difference]: With dead ends: 319932 [2022-01-10 00:06:35,051 INFO L226 Difference]: Without dead ends: 159967 [2022-01-10 00:06:35,203 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:06:35,203 INFO L933 BasicCegarLoop]: 1254 mSDtfsCounter, 405 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2214 mSolverCounterSat, 429 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 1262 SdHoareTripleChecker+Invalid, 2643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 429 IncrementalHoareTripleChecker+Valid, 2214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-01-10 00:06:35,204 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [405 Valid, 1262 Invalid, 2643 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [429 Valid, 2214 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-01-10 00:06:35,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159967 states.