/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/seq-mthreaded/pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 01:13:30,926 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 01:13:30,927 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 01:13:30,950 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 01:13:30,976 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 01:13:30,976 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 01:13:30,977 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 01:13:30,978 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 01:13:31,019 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 01:13:31,019 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 01:13:31,019 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 01:13:31,020 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 01:13:31,020 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 01:13:31,020 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 01:13:31,020 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 01:13:31,021 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 01:13:31,021 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 01:13:31,021 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 01:13:31,021 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 01:13:31,021 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 01:13:31,021 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 01:13:31,021 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 01:13:31,021 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 01:13:31,021 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 01:13:31,021 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 01:13:31,021 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 01:13:31,022 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 01:13:31,022 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 01:13:31,022 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 01:13:31,022 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 01:13:31,022 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 01:13:31,022 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 01:13:31,022 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 01:13:31,022 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 01:13:31,022 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 01:13:31,022 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 01:13:31,023 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 01:13:31,023 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 01:13:31,023 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 01:13:31,170 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 01:13:31,191 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 01:13:31,192 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 01:13:31,193 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 01:13:31,199 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 01:13:31,200 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c [2022-01-10 01:13:31,251 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/92740d173/5ce52e91414247e3ba56cfeb467b4928/FLAGb2a67d4d0 [2022-01-10 01:13:31,628 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 01:13:31,629 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c [2022-01-10 01:13:31,637 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/92740d173/5ce52e91414247e3ba56cfeb467b4928/FLAGb2a67d4d0 [2022-01-10 01:13:31,650 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/92740d173/5ce52e91414247e3ba56cfeb467b4928 [2022-01-10 01:13:31,654 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 01:13:31,656 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 01:13:31,657 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 01:13:31,657 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 01:13:31,660 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 01:13:31,660 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:13:31" (1/1) ... [2022-01-10 01:13:31,661 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54b3bde7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:13:31, skipping insertion in model container [2022-01-10 01:13:31,661 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:13:31" (1/1) ... [2022-01-10 01:13:31,666 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 01:13:31,695 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 01:13:31,862 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c[12820,12833] [2022-01-10 01:13:31,865 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 01:13:31,871 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 01:13:31,906 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c[12820,12833] [2022-01-10 01:13:31,907 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 01:13:31,916 INFO L208 MainTranslator]: Completed translation [2022-01-10 01:13:31,917 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:13:31 WrapperNode [2022-01-10 01:13:31,917 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 01:13:31,917 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 01:13:31,918 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 01:13:31,918 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 01:13:31,933 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:13:31" (1/1) ... [2022-01-10 01:13:31,940 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:13:31" (1/1) ... [2022-01-10 01:13:31,966 INFO L137 Inliner]: procedures = 25, calls = 16, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 389 [2022-01-10 01:13:31,967 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 01:13:31,967 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 01:13:31,967 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 01:13:31,967 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 01:13:31,973 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:13:31" (1/1) ... [2022-01-10 01:13:31,973 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:13:31" (1/1) ... [2022-01-10 01:13:31,977 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:13:31" (1/1) ... [2022-01-10 01:13:31,978 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:13:31" (1/1) ... [2022-01-10 01:13:31,986 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:13:31" (1/1) ... [2022-01-10 01:13:31,990 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:13:31" (1/1) ... [2022-01-10 01:13:31,991 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:13:31" (1/1) ... [2022-01-10 01:13:31,993 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 01:13:31,994 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 01:13:31,994 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 01:13:31,994 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 01:13:31,998 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:13:31" (1/1) ... [2022-01-10 01:13:32,003 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 01:13:32,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 01:13:32,028 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 01:13:32,030 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 01:13:32,054 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 01:13:32,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-10 01:13:32,055 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 01:13:32,055 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 01:13:32,119 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 01:13:32,120 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 01:13:32,436 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 01:13:32,442 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 01:13:32,442 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 01:13:32,444 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:13:32 BoogieIcfgContainer [2022-01-10 01:13:32,444 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 01:13:32,445 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 01:13:32,445 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 01:13:32,454 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 01:13:32,454 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 01:13:31" (1/3) ... [2022-01-10 01:13:32,454 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a00e692 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:13:32, skipping insertion in model container [2022-01-10 01:13:32,455 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:13:31" (2/3) ... [2022-01-10 01:13:32,455 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a00e692 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:13:32, skipping insertion in model container [2022-01-10 01:13:32,455 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:13:32" (3/3) ... [2022-01-10 01:13:32,456 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c [2022-01-10 01:13:32,459 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 01:13:32,460 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 01:13:32,491 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 01:13:32,495 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 01:13:32,495 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 01:13:32,506 INFO L276 IsEmpty]: Start isEmpty. Operand has 124 states, 122 states have (on average 1.7049180327868851) internal successors, (208), 123 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:13:32,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-01-10 01:13:32,511 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:13:32,511 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] [2022-01-10 01:13:32,511 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:13:32,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:13:32,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1522683097, now seen corresponding path program 1 times [2022-01-10 01:13:32,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:13:32,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31031389] [2022-01-10 01:13:32,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:13:32,521 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:13:32,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:13:32,677 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 01:13:32,678 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:13:32,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31031389] [2022-01-10 01:13:32,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31031389] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:13:32,679 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:13:32,679 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 01:13:32,680 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536494819] [2022-01-10 01:13:32,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:13:32,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 01:13:32,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:13:32,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 01:13:32,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 01:13:32,709 INFO L87 Difference]: Start difference. First operand has 124 states, 122 states have (on average 1.7049180327868851) internal successors, (208), 123 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 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 01:13:32,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:13:32,740 INFO L93 Difference]: Finished difference Result 207 states and 343 transitions. [2022-01-10 01:13:32,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 01:13:32,742 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 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 34 [2022-01-10 01:13:32,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:13:32,750 INFO L225 Difference]: With dead ends: 207 [2022-01-10 01:13:32,750 INFO L226 Difference]: Without dead ends: 120 [2022-01-10 01:13:32,753 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 01:13:32,755 INFO L933 BasicCegarLoop]: 201 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:13:32,762 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:13:32,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2022-01-10 01:13:32,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2022-01-10 01:13:32,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 119 states have (on average 1.6890756302521008) internal successors, (201), 119 states have internal predecessors, (201), 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 01:13:32,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 201 transitions. [2022-01-10 01:13:32,797 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 201 transitions. Word has length 34 [2022-01-10 01:13:32,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:13:32,797 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 201 transitions. [2022-01-10 01:13:32,797 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 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 01:13:32,798 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 201 transitions. [2022-01-10 01:13:32,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-01-10 01:13:32,800 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:13:32,800 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] [2022-01-10 01:13:32,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 01:13:32,800 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:13:32,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:13:32,801 INFO L85 PathProgramCache]: Analyzing trace with hash -136479703, now seen corresponding path program 1 times [2022-01-10 01:13:32,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:13:32,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915789137] [2022-01-10 01:13:32,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:13:32,801 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:13:32,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:13:32,891 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 01:13:32,891 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:13:32,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915789137] [2022-01-10 01:13:32,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915789137] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:13:32,892 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:13:32,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 01:13:32,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407178294] [2022-01-10 01:13:32,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:13:32,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 01:13:32,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:13:32,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 01:13:32,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:13:32,894 INFO L87 Difference]: Start difference. First operand 120 states and 201 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 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 01:13:32,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:13:32,966 INFO L93 Difference]: Finished difference Result 206 states and 336 transitions. [2022-01-10 01:13:32,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 01:13:32,967 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 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 34 [2022-01-10 01:13:32,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:13:32,967 INFO L225 Difference]: With dead ends: 206 [2022-01-10 01:13:32,967 INFO L226 Difference]: Without dead ends: 120 [2022-01-10 01:13:32,968 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:13:32,969 INFO L933 BasicCegarLoop]: 199 mSDtfsCounter, 3 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 761 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:13:32,969 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 761 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:13:32,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2022-01-10 01:13:32,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2022-01-10 01:13:32,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 119 states have (on average 1.4201680672268908) internal successors, (169), 119 states have internal predecessors, (169), 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 01:13:32,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 169 transitions. [2022-01-10 01:13:32,975 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 169 transitions. Word has length 34 [2022-01-10 01:13:32,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:13:32,975 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 169 transitions. [2022-01-10 01:13:32,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 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 01:13:32,975 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 169 transitions. [2022-01-10 01:13:32,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 01:13:32,976 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:13:32,977 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:13:32,977 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 01:13:32,977 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:13:32,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:13:32,977 INFO L85 PathProgramCache]: Analyzing trace with hash 958823668, now seen corresponding path program 1 times [2022-01-10 01:13:32,977 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:13:32,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594546420] [2022-01-10 01:13:32,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:13:32,978 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:13:33,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:13:33,087 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 01:13:33,088 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:13:33,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594546420] [2022-01-10 01:13:33,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594546420] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:13:33,088 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:13:33,088 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 01:13:33,088 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477692438] [2022-01-10 01:13:33,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:13:33,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 01:13:33,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:13:33,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 01:13:33,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:13:33,090 INFO L87 Difference]: Start difference. First operand 120 states and 169 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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 01:13:33,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:13:33,113 INFO L93 Difference]: Finished difference Result 272 states and 411 transitions. [2022-01-10 01:13:33,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 01:13:33,118 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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 65 [2022-01-10 01:13:33,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:13:33,120 INFO L225 Difference]: With dead ends: 272 [2022-01-10 01:13:33,120 INFO L226 Difference]: Without dead ends: 190 [2022-01-10 01:13:33,120 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 01:13:33,121 INFO L933 BasicCegarLoop]: 250 mSDtfsCounter, 114 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:13:33,121 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 376 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:13:33,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2022-01-10 01:13:33,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 188. [2022-01-10 01:13:33,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 187 states have (on average 1.4866310160427807) internal successors, (278), 187 states have internal predecessors, (278), 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 01:13:33,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 278 transitions. [2022-01-10 01:13:33,130 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 278 transitions. Word has length 65 [2022-01-10 01:13:33,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:13:33,131 INFO L470 AbstractCegarLoop]: Abstraction has 188 states and 278 transitions. [2022-01-10 01:13:33,131 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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 01:13:33,131 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 278 transitions. [2022-01-10 01:13:33,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 01:13:33,132 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:13:33,132 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:13:33,132 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 01:13:33,132 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:13:33,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:13:33,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1904004827, now seen corresponding path program 1 times [2022-01-10 01:13:33,133 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:13:33,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776255291] [2022-01-10 01:13:33,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:13:33,133 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:13:33,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:13:33,173 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 01:13:33,173 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:13:33,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776255291] [2022-01-10 01:13:33,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776255291] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:13:33,174 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:13:33,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 01:13:33,174 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364882054] [2022-01-10 01:13:33,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:13:33,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 01:13:33,174 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:13:33,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 01:13:33,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:13:33,175 INFO L87 Difference]: Start difference. First operand 188 states and 278 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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 01:13:33,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:13:33,188 INFO L93 Difference]: Finished difference Result 464 states and 718 transitions. [2022-01-10 01:13:33,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 01:13:33,189 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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 66 [2022-01-10 01:13:33,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:13:33,190 INFO L225 Difference]: With dead ends: 464 [2022-01-10 01:13:33,190 INFO L226 Difference]: Without dead ends: 314 [2022-01-10 01:13:33,191 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 01:13:33,192 INFO L933 BasicCegarLoop]: 237 mSDtfsCounter, 109 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 367 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:13:33,192 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 367 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:13:33,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2022-01-10 01:13:33,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 312. [2022-01-10 01:13:33,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 311 states have (on average 1.527331189710611) internal successors, (475), 311 states have internal predecessors, (475), 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 01:13:33,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 475 transitions. [2022-01-10 01:13:33,204 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 475 transitions. Word has length 66 [2022-01-10 01:13:33,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:13:33,204 INFO L470 AbstractCegarLoop]: Abstraction has 312 states and 475 transitions. [2022-01-10 01:13:33,204 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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 01:13:33,205 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 475 transitions. [2022-01-10 01:13:33,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 01:13:33,206 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:13:33,206 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, 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 01:13:33,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 01:13:33,206 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:13:33,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:13:33,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1896694372, now seen corresponding path program 1 times [2022-01-10 01:13:33,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:13:33,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417261994] [2022-01-10 01:13:33,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:13:33,207 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:13:33,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:13:33,243 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 01:13:33,243 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:13:33,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417261994] [2022-01-10 01:13:33,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417261994] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:13:33,243 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:13:33,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 01:13:33,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632243196] [2022-01-10 01:13:33,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:13:33,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 01:13:33,244 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:13:33,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 01:13:33,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:13:33,245 INFO L87 Difference]: Start difference. First operand 312 states and 475 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 01:13:33,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:13:33,264 INFO L93 Difference]: Finished difference Result 812 states and 1269 transitions. [2022-01-10 01:13:33,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 01:13:33,265 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 67 [2022-01-10 01:13:33,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:13:33,268 INFO L225 Difference]: With dead ends: 812 [2022-01-10 01:13:33,268 INFO L226 Difference]: Without dead ends: 538 [2022-01-10 01:13:33,271 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 01:13:33,274 INFO L933 BasicCegarLoop]: 224 mSDtfsCounter, 104 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:13:33,275 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 358 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:13:33,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2022-01-10 01:13:33,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 536. [2022-01-10 01:13:33,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 536 states, 535 states have (on average 1.5457943925233646) internal successors, (827), 535 states have internal predecessors, (827), 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 01:13:33,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 827 transitions. [2022-01-10 01:13:33,301 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 827 transitions. Word has length 67 [2022-01-10 01:13:33,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:13:33,302 INFO L470 AbstractCegarLoop]: Abstraction has 536 states and 827 transitions. [2022-01-10 01:13:33,302 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 01:13:33,302 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 827 transitions. [2022-01-10 01:13:33,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 01:13:33,306 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:13:33,307 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, 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 01:13:33,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 01:13:33,307 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:13:33,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:13:33,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1528655733, now seen corresponding path program 1 times [2022-01-10 01:13:33,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:13:33,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238263944] [2022-01-10 01:13:33,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:13:33,311 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:13:33,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:13:33,379 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 01:13:33,380 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:13:33,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238263944] [2022-01-10 01:13:33,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238263944] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:13:33,380 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:13:33,381 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 01:13:33,381 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49454902] [2022-01-10 01:13:33,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:13:33,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 01:13:33,381 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:13:33,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 01:13:33,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:13:33,382 INFO L87 Difference]: Start difference. First operand 536 states and 827 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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 01:13:33,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:13:33,411 INFO L93 Difference]: Finished difference Result 1436 states and 2245 transitions. [2022-01-10 01:13:33,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 01:13:33,411 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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 68 [2022-01-10 01:13:33,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:13:33,415 INFO L225 Difference]: With dead ends: 1436 [2022-01-10 01:13:33,415 INFO L226 Difference]: Without dead ends: 938 [2022-01-10 01:13:33,415 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 01:13:33,419 INFO L933 BasicCegarLoop]: 211 mSDtfsCounter, 99 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:13:33,422 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 349 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:13:33,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 938 states. [2022-01-10 01:13:33,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 938 to 936. [2022-01-10 01:13:33,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 936 states, 935 states have (on average 1.5475935828877005) internal successors, (1447), 935 states have internal predecessors, (1447), 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 01:13:33,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 936 states to 936 states and 1447 transitions. [2022-01-10 01:13:33,445 INFO L78 Accepts]: Start accepts. Automaton has 936 states and 1447 transitions. Word has length 68 [2022-01-10 01:13:33,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:13:33,445 INFO L470 AbstractCegarLoop]: Abstraction has 936 states and 1447 transitions. [2022-01-10 01:13:33,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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 01:13:33,445 INFO L276 IsEmpty]: Start isEmpty. Operand 936 states and 1447 transitions. [2022-01-10 01:13:33,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 01:13:33,447 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:13:33,447 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, 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 01:13:33,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 01:13:33,448 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:13:33,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:13:33,448 INFO L85 PathProgramCache]: Analyzing trace with hash -571662380, now seen corresponding path program 1 times [2022-01-10 01:13:33,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:13:33,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761156045] [2022-01-10 01:13:33,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:13:33,449 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:13:33,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:13:33,574 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 01:13:33,574 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:13:33,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761156045] [2022-01-10 01:13:33,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761156045] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:13:33,575 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:13:33,575 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 01:13:33,575 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905250122] [2022-01-10 01:13:33,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:13:33,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 01:13:33,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:13:33,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 01:13:33,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:13:33,576 INFO L87 Difference]: Start difference. First operand 936 states and 1447 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 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 01:13:33,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:13:33,788 INFO L93 Difference]: Finished difference Result 6324 states and 9901 transitions. [2022-01-10 01:13:33,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 01:13:33,788 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 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 69 [2022-01-10 01:13:33,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:13:33,805 INFO L225 Difference]: With dead ends: 6324 [2022-01-10 01:13:33,805 INFO L226 Difference]: Without dead ends: 5426 [2022-01-10 01:13:33,809 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-01-10 01:13:33,810 INFO L933 BasicCegarLoop]: 167 mSDtfsCounter, 1237 mSDsluCounter, 1847 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1237 SdHoareTripleChecker+Valid, 2014 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:13:33,810 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1237 Valid, 2014 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 01:13:33,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5426 states. [2022-01-10 01:13:33,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5426 to 1832. [2022-01-10 01:13:33,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1832 states, 1831 states have (on average 1.5417804478427088) internal successors, (2823), 1831 states have internal predecessors, (2823), 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 01:13:33,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1832 states to 1832 states and 2823 transitions. [2022-01-10 01:13:33,893 INFO L78 Accepts]: Start accepts. Automaton has 1832 states and 2823 transitions. Word has length 69 [2022-01-10 01:13:33,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:13:33,894 INFO L470 AbstractCegarLoop]: Abstraction has 1832 states and 2823 transitions. [2022-01-10 01:13:33,895 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 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 01:13:33,895 INFO L276 IsEmpty]: Start isEmpty. Operand 1832 states and 2823 transitions. [2022-01-10 01:13:33,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-10 01:13:33,895 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:13:33,896 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, 1, 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 01:13:33,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 01:13:33,896 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:13:33,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:13:33,898 INFO L85 PathProgramCache]: Analyzing trace with hash -924987803, now seen corresponding path program 1 times [2022-01-10 01:13:33,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:13:33,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554070605] [2022-01-10 01:13:33,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:13:33,898 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:13:33,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:13:34,000 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 01:13:34,000 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:13:34,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554070605] [2022-01-10 01:13:34,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554070605] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:13:34,000 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:13:34,000 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 01:13:34,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592722041] [2022-01-10 01:13:34,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:13:34,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 01:13:34,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:13:34,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 01:13:34,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:13:34,002 INFO L87 Difference]: Start difference. First operand 1832 states and 2823 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 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 01:13:34,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:13:34,449 INFO L93 Difference]: Finished difference Result 9874 states and 15148 transitions. [2022-01-10 01:13:34,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 01:13:34,450 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 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 70 [2022-01-10 01:13:34,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:13:34,471 INFO L225 Difference]: With dead ends: 9874 [2022-01-10 01:13:34,472 INFO L226 Difference]: Without dead ends: 8080 [2022-01-10 01:13:34,475 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:13:34,476 INFO L933 BasicCegarLoop]: 374 mSDtfsCounter, 552 mSDsluCounter, 605 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 552 SdHoareTripleChecker+Valid, 979 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:13:34,476 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [552 Valid, 979 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 01:13:34,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8080 states. [2022-01-10 01:13:34,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8080 to 8072. [2022-01-10 01:13:34,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8072 states, 8071 states have (on average 1.5273200346921076) internal successors, (12327), 8071 states have internal predecessors, (12327), 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 01:13:34,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8072 states to 8072 states and 12327 transitions. [2022-01-10 01:13:34,868 INFO L78 Accepts]: Start accepts. Automaton has 8072 states and 12327 transitions. Word has length 70 [2022-01-10 01:13:34,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:13:34,868 INFO L470 AbstractCegarLoop]: Abstraction has 8072 states and 12327 transitions. [2022-01-10 01:13:34,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 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 01:13:34,868 INFO L276 IsEmpty]: Start isEmpty. Operand 8072 states and 12327 transitions. [2022-01-10 01:13:34,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-01-10 01:13:34,872 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:13:34,872 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, 1, 1, 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 01:13:34,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 01:13:34,872 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:13:34,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:13:34,875 INFO L85 PathProgramCache]: Analyzing trace with hash 810353873, now seen corresponding path program 1 times [2022-01-10 01:13:34,875 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:13:34,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207446862] [2022-01-10 01:13:34,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:13:34,877 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:13:34,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:13:34,912 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 01:13:34,912 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:13:34,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207446862] [2022-01-10 01:13:34,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207446862] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:13:34,913 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:13:34,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 01:13:34,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948027952] [2022-01-10 01:13:34,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:13:34,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 01:13:34,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:13:34,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 01:13:34,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:13:34,914 INFO L87 Difference]: Start difference. First operand 8072 states and 12327 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:13:35,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:13:35,478 INFO L93 Difference]: Finished difference Result 21996 states and 33385 transitions. [2022-01-10 01:13:35,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 01:13:35,478 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2022-01-10 01:13:35,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:13:35,553 INFO L225 Difference]: With dead ends: 21996 [2022-01-10 01:13:35,553 INFO L226 Difference]: Without dead ends: 13962 [2022-01-10 01:13:35,562 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 01:13:35,564 INFO L933 BasicCegarLoop]: 273 mSDtfsCounter, 116 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:13:35,564 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 395 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:13:35,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13962 states. [2022-01-10 01:13:36,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13962 to 13960. [2022-01-10 01:13:36,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13960 states, 13959 states have (on average 1.4997492657067124) internal successors, (20935), 13959 states have internal predecessors, (20935), 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 01:13:36,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13960 states to 13960 states and 20935 transitions. [2022-01-10 01:13:36,308 INFO L78 Accepts]: Start accepts. Automaton has 13960 states and 20935 transitions. Word has length 71 [2022-01-10 01:13:36,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:13:36,309 INFO L470 AbstractCegarLoop]: Abstraction has 13960 states and 20935 transitions. [2022-01-10 01:13:36,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:13:36,309 INFO L276 IsEmpty]: Start isEmpty. Operand 13960 states and 20935 transitions. [2022-01-10 01:13:36,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-01-10 01:13:36,310 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:13:36,310 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, 1, 1, 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 01:13:36,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 01:13:36,310 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:13:36,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:13:36,311 INFO L85 PathProgramCache]: Analyzing trace with hash -241201943, now seen corresponding path program 1 times [2022-01-10 01:13:36,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:13:36,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697329550] [2022-01-10 01:13:36,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:13:36,311 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:13:36,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:13:36,375 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 01:13:36,375 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:13:36,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697329550] [2022-01-10 01:13:36,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697329550] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:13:36,375 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:13:36,375 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 01:13:36,375 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993609255] [2022-01-10 01:13:36,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:13:36,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 01:13:36,376 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:13:36,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 01:13:36,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:13:36,376 INFO L87 Difference]: Start difference. First operand 13960 states and 20935 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:13:37,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:13:37,699 INFO L93 Difference]: Finished difference Result 29162 states and 43112 transitions. [2022-01-10 01:13:37,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 01:13:37,700 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2022-01-10 01:13:37,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:13:37,753 INFO L225 Difference]: With dead ends: 29162 [2022-01-10 01:13:37,754 INFO L226 Difference]: Without dead ends: 29160 [2022-01-10 01:13:37,762 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 01:13:37,763 INFO L933 BasicCegarLoop]: 236 mSDtfsCounter, 372 mSDsluCounter, 501 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 737 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:13:37,764 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [372 Valid, 737 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:13:37,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29160 states. [2022-01-10 01:13:38,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29160 to 14920. [2022-01-10 01:13:38,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14920 states, 14919 states have (on average 1.4675916616395202) internal successors, (21895), 14919 states have internal predecessors, (21895), 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 01:13:38,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14920 states to 14920 states and 21895 transitions. [2022-01-10 01:13:38,692 INFO L78 Accepts]: Start accepts. Automaton has 14920 states and 21895 transitions. Word has length 71 [2022-01-10 01:13:38,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:13:38,692 INFO L470 AbstractCegarLoop]: Abstraction has 14920 states and 21895 transitions. [2022-01-10 01:13:38,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:13:38,693 INFO L276 IsEmpty]: Start isEmpty. Operand 14920 states and 21895 transitions. [2022-01-10 01:13:38,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 01:13:38,693 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:13:38,693 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, 1, 1, 1, 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 01:13:38,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 01:13:38,694 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:13:38,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:13:38,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1165253064, now seen corresponding path program 1 times [2022-01-10 01:13:38,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:13:38,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398528760] [2022-01-10 01:13:38,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:13:38,694 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:13:38,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:13:38,770 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 01:13:38,770 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:13:38,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398528760] [2022-01-10 01:13:38,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398528760] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:13:38,770 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:13:38,770 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 01:13:38,771 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713914211] [2022-01-10 01:13:38,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:13:38,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 01:13:38,771 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:13:38,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 01:13:38,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:13:38,771 INFO L87 Difference]: Start difference. First operand 14920 states and 21895 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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 01:13:39,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:13:39,553 INFO L93 Difference]: Finished difference Result 36446 states and 53547 transitions. [2022-01-10 01:13:39,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 01:13:39,553 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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 72 [2022-01-10 01:13:39,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:13:39,592 INFO L225 Difference]: With dead ends: 36446 [2022-01-10 01:13:39,592 INFO L226 Difference]: Without dead ends: 21564 [2022-01-10 01:13:39,603 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 01:13:39,604 INFO L933 BasicCegarLoop]: 168 mSDtfsCounter, 89 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:13:39,604 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 294 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:13:39,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21564 states. [2022-01-10 01:13:40,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21564 to 21418. [2022-01-10 01:13:40,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21418 states, 21417 states have (on average 1.4594481019750665) internal successors, (31257), 21417 states have internal predecessors, (31257), 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 01:13:40,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21418 states to 21418 states and 31257 transitions. [2022-01-10 01:13:40,771 INFO L78 Accepts]: Start accepts. Automaton has 21418 states and 31257 transitions. Word has length 72 [2022-01-10 01:13:40,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:13:40,771 INFO L470 AbstractCegarLoop]: Abstraction has 21418 states and 31257 transitions. [2022-01-10 01:13:40,772 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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 01:13:40,772 INFO L276 IsEmpty]: Start isEmpty. Operand 21418 states and 31257 transitions. [2022-01-10 01:13:40,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-01-10 01:13:40,780 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:13:40,781 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 01:13:40,781 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 01:13:40,781 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:13:40,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:13:40,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1893321424, now seen corresponding path program 1 times [2022-01-10 01:13:40,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:13:40,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346977896] [2022-01-10 01:13:40,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:13:40,782 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:13:40,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:13:40,896 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:13:40,897 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:13:40,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346977896] [2022-01-10 01:13:40,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346977896] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 01:13:40,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [628575068] [2022-01-10 01:13:40,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:13:40,897 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 01:13:40,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 01:13:40,899 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 01:13:40,902 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 01:13:41,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:13:41,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 01:13:41,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 01:13:41,400 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 01:13:41,400 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 01:13:41,626 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 01:13:41,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [628575068] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 01:13:41,626 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 01:13:41,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 4, 4] total 14 [2022-01-10 01:13:41,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199616331] [2022-01-10 01:13:41,626 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 01:13:41,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-10 01:13:41,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:13:41,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-10 01:13:41,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2022-01-10 01:13:41,628 INFO L87 Difference]: Start difference. First operand 21418 states and 31257 transitions. Second operand has 14 states, 14 states have (on average 20.642857142857142) internal successors, (289), 14 states have internal predecessors, (289), 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 01:13:57,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:13:57,774 INFO L93 Difference]: Finished difference Result 281370 states and 409511 transitions. [2022-01-10 01:13:57,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2022-01-10 01:13:57,775 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 20.642857142857142) internal successors, (289), 14 states have internal predecessors, (289), 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 101 [2022-01-10 01:13:57,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:13:58,314 INFO L225 Difference]: With dead ends: 281370 [2022-01-10 01:13:58,314 INFO L226 Difference]: Without dead ends: 260600 [2022-01-10 01:13:58,410 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3662 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1776, Invalid=7344, Unknown=0, NotChecked=0, Total=9120 [2022-01-10 01:13:58,410 INFO L933 BasicCegarLoop]: 675 mSDtfsCounter, 7291 mSDsluCounter, 3658 mSDsCounter, 0 mSdLazyCounter, 2946 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7291 SdHoareTripleChecker+Valid, 4333 SdHoareTripleChecker+Invalid, 3119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 2946 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-10 01:13:58,410 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7291 Valid, 4333 Invalid, 3119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 2946 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-01-10 01:13:58,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260600 states. [2022-01-10 01:14:07,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260600 to 146770. [2022-01-10 01:14:07,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146770 states, 146769 states have (on average 1.4430635897226254) internal successors, (211797), 146769 states have internal predecessors, (211797), 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 01:14:08,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146770 states to 146770 states and 211797 transitions. [2022-01-10 01:14:08,085 INFO L78 Accepts]: Start accepts. Automaton has 146770 states and 211797 transitions. Word has length 101 [2022-01-10 01:14:08,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:14:08,086 INFO L470 AbstractCegarLoop]: Abstraction has 146770 states and 211797 transitions. [2022-01-10 01:14:08,086 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 20.642857142857142) internal successors, (289), 14 states have internal predecessors, (289), 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 01:14:08,086 INFO L276 IsEmpty]: Start isEmpty. Operand 146770 states and 211797 transitions. [2022-01-10 01:14:08,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-01-10 01:14:08,099 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:14:08,099 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 01:14:08,121 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 01:14:08,305 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,SelfDestructingSolverStorable11 [2022-01-10 01:14:08,305 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:14:08,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:14:08,306 INFO L85 PathProgramCache]: Analyzing trace with hash 467391681, now seen corresponding path program 1 times [2022-01-10 01:14:08,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:14:08,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768958337] [2022-01-10 01:14:08,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:14:08,306 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:14:08,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:14:08,332 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:14:08,333 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:14:08,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768958337] [2022-01-10 01:14:08,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768958337] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:14:08,333 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:14:08,333 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 01:14:08,333 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671553361] [2022-01-10 01:14:08,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:14:08,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 01:14:08,333 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:14:08,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 01:14:08,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:14:08,334 INFO L87 Difference]: Start difference. First operand 146770 states and 211797 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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 01:14:19,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:14:19,589 INFO L93 Difference]: Finished difference Result 315430 states and 455515 transitions. [2022-01-10 01:14:19,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 01:14:19,589 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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 101 [2022-01-10 01:14:19,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:14:20,134 INFO L225 Difference]: With dead ends: 315430 [2022-01-10 01:14:20,134 INFO L226 Difference]: Without dead ends: 219632 [2022-01-10 01:14:20,209 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 01:14:20,209 INFO L933 BasicCegarLoop]: 196 mSDtfsCounter, 90 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:14:20,210 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 353 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:14:20,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219632 states. [2022-01-10 01:14:32,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219632 to 209874. [2022-01-10 01:14:32,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209874 states, 209873 states have (on average 1.4299552586564255) internal successors, (300109), 209873 states have internal predecessors, (300109), 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 01:14:32,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209874 states to 209874 states and 300109 transitions. [2022-01-10 01:14:32,804 INFO L78 Accepts]: Start accepts. Automaton has 209874 states and 300109 transitions. Word has length 101 [2022-01-10 01:14:32,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:14:32,804 INFO L470 AbstractCegarLoop]: Abstraction has 209874 states and 300109 transitions. [2022-01-10 01:14:32,804 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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 01:14:32,804 INFO L276 IsEmpty]: Start isEmpty. Operand 209874 states and 300109 transitions. [2022-01-10 01:14:32,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-01-10 01:14:32,824 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:14:32,824 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 01:14:32,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 01:14:32,825 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:14:32,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:14:32,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1876248243, now seen corresponding path program 1 times [2022-01-10 01:14:32,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:14:32,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526046878] [2022-01-10 01:14:32,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:14:32,825 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:14:32,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:14:32,878 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-01-10 01:14:32,878 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:14:32,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526046878] [2022-01-10 01:14:32,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526046878] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:14:32,878 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:14:32,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 01:14:32,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218389537] [2022-01-10 01:14:32,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:14:32,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 01:14:32,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:14:32,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 01:14:32,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:14:32,880 INFO L87 Difference]: Start difference. First operand 209874 states and 300109 transitions. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 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)