/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label10.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 00:23:29,870 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 00:23:29,872 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 00:23:29,933 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 00:23:29,972 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 00:23:29,973 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 00:23:29,973 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 00:23:29,978 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 00:23:30,009 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 00:23:30,010 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 00:23:30,010 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 00:23:30,010 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 00:23:30,011 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 00:23:30,011 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 00:23:30,012 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 00:23:30,012 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 00:23:30,012 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 00:23:30,012 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 00:23:30,013 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 00:23:30,013 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 00:23:30,013 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 00:23:30,013 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 00:23:30,013 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 00:23:30,013 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 00:23:30,013 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 00:23:30,013 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 00:23:30,014 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 00:23:30,014 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 00:23:30,014 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 00:23:30,014 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 00:23:30,014 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 00:23:30,014 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 00:23:30,014 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 00:23:30,015 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 00:23:30,015 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 00:23:30,016 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 00:23:30,016 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 00:23:30,016 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 00:23:30,016 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 00:23:30,215 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 00:23:30,233 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 00:23:30,234 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 00:23:30,235 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 00:23:30,236 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 00:23:30,236 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label10.c [2022-01-10 00:23:30,296 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df32893fc/d42f923130ec4dd1a7e9b693d9d13594/FLAG9aa4efe45 [2022-01-10 00:23:30,857 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 00:23:30,858 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label10.c [2022-01-10 00:23:30,873 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df32893fc/d42f923130ec4dd1a7e9b693d9d13594/FLAG9aa4efe45 [2022-01-10 00:23:31,060 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df32893fc/d42f923130ec4dd1a7e9b693d9d13594 [2022-01-10 00:23:31,063 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 00:23:31,065 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 00:23:31,068 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 00:23:31,068 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 00:23:31,071 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 00:23:31,071 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:23:31" (1/1) ... [2022-01-10 00:23:31,072 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34a76d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:23:31, skipping insertion in model container [2022-01-10 00:23:31,072 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:23:31" (1/1) ... [2022-01-10 00:23:31,078 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 00:23:31,152 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 00:23:31,364 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label10.c[5916,5929] [2022-01-10 00:23:31,837 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 00:23:31,844 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 00:23:31,864 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label10.c[5916,5929] [2022-01-10 00:23:32,168 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 00:23:32,206 INFO L208 MainTranslator]: Completed translation [2022-01-10 00:23:32,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:23:32 WrapperNode [2022-01-10 00:23:32,208 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 00:23:32,209 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 00:23:32,209 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 00:23:32,209 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 00:23:32,214 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:23:32" (1/1) ... [2022-01-10 00:23:32,263 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:23:32" (1/1) ... [2022-01-10 00:23:32,443 INFO L137 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2611 [2022-01-10 00:23:32,443 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 00:23:32,444 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 00:23:32,444 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 00:23:32,444 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 00:23:32,451 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:23:32" (1/1) ... [2022-01-10 00:23:32,451 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:23:32" (1/1) ... [2022-01-10 00:23:32,481 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:23:32" (1/1) ... [2022-01-10 00:23:32,481 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:23:32" (1/1) ... [2022-01-10 00:23:32,705 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:23:32" (1/1) ... [2022-01-10 00:23:32,726 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:23:32" (1/1) ... [2022-01-10 00:23:32,769 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:23:32" (1/1) ... [2022-01-10 00:23:32,846 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 00:23:32,847 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 00:23:32,848 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 00:23:32,848 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 00:23:32,850 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:23:32" (1/1) ... [2022-01-10 00:23:32,855 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 00:23:32,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 00:23:32,874 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 00:23:32,875 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 00:23:32,902 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 00:23:32,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-10 00:23:32,902 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 00:23:32,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 00:23:32,968 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 00:23:32,969 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 00:23:35,690 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 00:23:35,708 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 00:23:35,709 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 00:23:35,711 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:23:35 BoogieIcfgContainer [2022-01-10 00:23:35,711 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 00:23:35,713 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 00:23:35,714 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 00:23:35,717 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 00:23:35,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 12:23:31" (1/3) ... [2022-01-10 00:23:35,718 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3044d232 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:23:35, skipping insertion in model container [2022-01-10 00:23:35,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:23:32" (2/3) ... [2022-01-10 00:23:35,719 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3044d232 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:23:35, skipping insertion in model container [2022-01-10 00:23:35,719 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:23:35" (3/3) ... [2022-01-10 00:23:35,720 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem17_label10.c [2022-01-10 00:23:35,724 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 00:23:35,724 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 00:23:35,767 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 00:23:35,772 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 00:23:35,773 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 00:23:35,794 INFO L276 IsEmpty]: Start isEmpty. Operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:23:35,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-01-10 00:23:35,800 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:23:35,800 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, 1, 1, 1, 1, 1] [2022-01-10 00:23:35,801 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:23:35,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:23:35,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1453294289, now seen corresponding path program 1 times [2022-01-10 00:23:35,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:23:35,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344156629] [2022-01-10 00:23:35,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:23:35,814 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:23:35,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:23:36,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:23:36,099 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:23:36,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344156629] [2022-01-10 00:23:36,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344156629] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:23:36,100 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:23:36,100 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 00:23:36,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619749404] [2022-01-10 00:23:36,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:23:36,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:23:36,106 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:23:36,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:23:36,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:23:36,140 INFO L87 Difference]: Start difference. First operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:23:38,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:23:38,800 INFO L93 Difference]: Finished difference Result 1642 states and 3024 transitions. [2022-01-10 00:23:38,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:23:38,802 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 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 39 [2022-01-10 00:23:38,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:23:38,818 INFO L225 Difference]: With dead ends: 1642 [2022-01-10 00:23:38,818 INFO L226 Difference]: Without dead ends: 975 [2022-01-10 00:23:38,822 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:23:38,825 INFO L933 BasicCegarLoop]: 474 mSDtfsCounter, 451 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 1413 mSolverCounterSat, 372 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 451 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 1785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 372 IncrementalHoareTripleChecker+Valid, 1413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-01-10 00:23:38,826 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [451 Valid, 550 Invalid, 1785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [372 Valid, 1413 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-01-10 00:23:38,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2022-01-10 00:23:38,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 972. [2022-01-10 00:23:38,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 972 states, 971 states have (on average 1.5077239958805355) internal successors, (1464), 971 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:23:38,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 1464 transitions. [2022-01-10 00:23:38,933 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 1464 transitions. Word has length 39 [2022-01-10 00:23:38,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:23:38,934 INFO L470 AbstractCegarLoop]: Abstraction has 972 states and 1464 transitions. [2022-01-10 00:23:38,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:23:38,934 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 1464 transitions. [2022-01-10 00:23:38,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-01-10 00:23:38,937 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:23:38,938 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:23:38,938 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 00:23:38,938 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:23:38,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:23:38,939 INFO L85 PathProgramCache]: Analyzing trace with hash -536581628, now seen corresponding path program 1 times [2022-01-10 00:23:38,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:23:38,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095094945] [2022-01-10 00:23:38,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:23:38,940 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:23:38,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:23:39,089 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:23:39,089 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:23:39,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095094945] [2022-01-10 00:23:39,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095094945] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:23:39,090 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:23:39,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:23:39,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859976501] [2022-01-10 00:23:39,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:23:39,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:23:39,091 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:23:39,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:23:39,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:23:39,092 INFO L87 Difference]: Start difference. First operand 972 states and 1464 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:23:41,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:23:41,057 INFO L93 Difference]: Finished difference Result 2814 states and 4242 transitions. [2022-01-10 00:23:41,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:23:41,058 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 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 109 [2022-01-10 00:23:41,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:23:41,065 INFO L225 Difference]: With dead ends: 2814 [2022-01-10 00:23:41,065 INFO L226 Difference]: Without dead ends: 1844 [2022-01-10 00:23:41,066 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:23:41,067 INFO L933 BasicCegarLoop]: 853 mSDtfsCounter, 452 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 1283 mSolverCounterSat, 414 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 452 SdHoareTripleChecker+Valid, 921 SdHoareTripleChecker+Invalid, 1697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 414 IncrementalHoareTripleChecker+Valid, 1283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-01-10 00:23:41,068 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [452 Valid, 921 Invalid, 1697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [414 Valid, 1283 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-01-10 00:23:41,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1844 states. [2022-01-10 00:23:41,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1844 to 1842. [2022-01-10 00:23:41,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1842 states, 1841 states have (on average 1.3601303639326452) internal successors, (2504), 1841 states have internal predecessors, (2504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:23:41,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1842 states to 1842 states and 2504 transitions. [2022-01-10 00:23:41,108 INFO L78 Accepts]: Start accepts. Automaton has 1842 states and 2504 transitions. Word has length 109 [2022-01-10 00:23:41,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:23:41,108 INFO L470 AbstractCegarLoop]: Abstraction has 1842 states and 2504 transitions. [2022-01-10 00:23:41,109 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:23:41,109 INFO L276 IsEmpty]: Start isEmpty. Operand 1842 states and 2504 transitions. [2022-01-10 00:23:41,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-01-10 00:23:41,112 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:23:41,113 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:23:41,113 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 00:23:41,113 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:23:41,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:23:41,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1533010305, now seen corresponding path program 1 times [2022-01-10 00:23:41,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:23:41,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381975728] [2022-01-10 00:23:41,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:23:41,114 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:23:41,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:23:41,239 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:23:41,240 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:23:41,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381975728] [2022-01-10 00:23:41,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381975728] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:23:41,240 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:23:41,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 00:23:41,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630528501] [2022-01-10 00:23:41,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:23:41,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:23:41,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:23:41,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:23:41,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:23:41,242 INFO L87 Difference]: Start difference. First operand 1842 states and 2504 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:23:43,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:23:43,340 INFO L93 Difference]: Finished difference Result 5395 states and 7326 transitions. [2022-01-10 00:23:43,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:23:43,342 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 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 131 [2022-01-10 00:23:43,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:23:43,350 INFO L225 Difference]: With dead ends: 5395 [2022-01-10 00:23:43,350 INFO L226 Difference]: Without dead ends: 2701 [2022-01-10 00:23:43,353 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:23:43,354 INFO L933 BasicCegarLoop]: 516 mSDtfsCounter, 368 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 1629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 1081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-01-10 00:23:43,354 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [368 Valid, 591 Invalid, 1629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1081 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-01-10 00:23:43,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2701 states. [2022-01-10 00:23:43,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2701 to 2701. [2022-01-10 00:23:43,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2701 states, 2700 states have (on average 1.191851851851852) internal successors, (3218), 2700 states have internal predecessors, (3218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:23:43,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2701 states to 2701 states and 3218 transitions. [2022-01-10 00:23:43,397 INFO L78 Accepts]: Start accepts. Automaton has 2701 states and 3218 transitions. Word has length 131 [2022-01-10 00:23:43,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:23:43,397 INFO L470 AbstractCegarLoop]: Abstraction has 2701 states and 3218 transitions. [2022-01-10 00:23:43,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:23:43,398 INFO L276 IsEmpty]: Start isEmpty. Operand 2701 states and 3218 transitions. [2022-01-10 00:23:43,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2022-01-10 00:23:43,401 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:23:43,401 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:23:43,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 00:23:43,401 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:23:43,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:23:43,402 INFO L85 PathProgramCache]: Analyzing trace with hash -973199442, now seen corresponding path program 1 times [2022-01-10 00:23:43,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:23:43,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914286350] [2022-01-10 00:23:43,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:23:43,403 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:23:43,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:23:43,579 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 141 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:23:43,579 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:23:43,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914286350] [2022-01-10 00:23:43,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914286350] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:23:43,579 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:23:43,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:23:43,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379400371] [2022-01-10 00:23:43,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:23:43,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:23:43,582 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:23:43,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:23:43,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:23:43,583 INFO L87 Difference]: Start difference. First operand 2701 states and 3218 transitions. Second operand has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:23:45,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:23:45,223 INFO L93 Difference]: Finished difference Result 7108 states and 8598 transitions. [2022-01-10 00:23:45,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:23:45,224 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 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 191 [2022-01-10 00:23:45,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:23:45,237 INFO L225 Difference]: With dead ends: 7108 [2022-01-10 00:23:45,237 INFO L226 Difference]: Without dead ends: 4409 [2022-01-10 00:23:45,241 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:23:45,242 INFO L933 BasicCegarLoop]: 726 mSDtfsCounter, 496 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 1136 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 784 SdHoareTripleChecker+Invalid, 1442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 1136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-10 00:23:45,243 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [496 Valid, 784 Invalid, 1442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 1136 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-01-10 00:23:45,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4409 states. [2022-01-10 00:23:45,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4409 to 4409. [2022-01-10 00:23:45,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4409 states, 4408 states have (on average 1.1705989110707804) internal successors, (5160), 4408 states have internal predecessors, (5160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:23:45,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4409 states to 4409 states and 5160 transitions. [2022-01-10 00:23:45,306 INFO L78 Accepts]: Start accepts. Automaton has 4409 states and 5160 transitions. Word has length 191 [2022-01-10 00:23:45,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:23:45,307 INFO L470 AbstractCegarLoop]: Abstraction has 4409 states and 5160 transitions. [2022-01-10 00:23:45,307 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:23:45,307 INFO L276 IsEmpty]: Start isEmpty. Operand 4409 states and 5160 transitions. [2022-01-10 00:23:45,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2022-01-10 00:23:45,312 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:23:45,312 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:23:45,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 00:23:45,312 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:23:45,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:23:45,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1396957395, now seen corresponding path program 1 times [2022-01-10 00:23:45,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:23:45,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345712540] [2022-01-10 00:23:45,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:23:45,314 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:23:45,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:23:45,457 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-01-10 00:23:45,457 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:23:45,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345712540] [2022-01-10 00:23:45,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345712540] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:23:45,458 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:23:45,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:23:45,458 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371110574] [2022-01-10 00:23:45,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:23:45,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:23:45,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:23:45,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:23:45,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:23:45,461 INFO L87 Difference]: Start difference. First operand 4409 states and 5160 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:23:47,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:23:47,155 INFO L93 Difference]: Finished difference Result 10936 states and 12970 transitions. [2022-01-10 00:23:47,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:23:47,156 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 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 193 [2022-01-10 00:23:47,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:23:47,174 INFO L225 Difference]: With dead ends: 10936 [2022-01-10 00:23:47,174 INFO L226 Difference]: Without dead ends: 6528 [2022-01-10 00:23:47,180 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:23:47,181 INFO L933 BasicCegarLoop]: 382 mSDtfsCounter, 412 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1215 mSolverCounterSat, 274 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 412 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 1489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 274 IncrementalHoareTripleChecker+Valid, 1215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-10 00:23:47,181 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [412 Valid, 444 Invalid, 1489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [274 Valid, 1215 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-01-10 00:23:47,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6528 states. [2022-01-10 00:23:47,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6528 to 4382. [2022-01-10 00:23:47,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4382 states, 4381 states have (on average 1.1684546907098836) internal successors, (5119), 4381 states have internal predecessors, (5119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:23:47,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4382 states to 4382 states and 5119 transitions. [2022-01-10 00:23:47,256 INFO L78 Accepts]: Start accepts. Automaton has 4382 states and 5119 transitions. Word has length 193 [2022-01-10 00:23:47,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:23:47,257 INFO L470 AbstractCegarLoop]: Abstraction has 4382 states and 5119 transitions. [2022-01-10 00:23:47,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:23:47,257 INFO L276 IsEmpty]: Start isEmpty. Operand 4382 states and 5119 transitions. [2022-01-10 00:23:47,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2022-01-10 00:23:47,260 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:23:47,260 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:23:47,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 00:23:47,261 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:23:47,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:23:47,261 INFO L85 PathProgramCache]: Analyzing trace with hash -856254131, now seen corresponding path program 1 times [2022-01-10 00:23:47,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:23:47,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037050791] [2022-01-10 00:23:47,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:23:47,265 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:23:47,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:23:47,418 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-01-10 00:23:47,418 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:23:47,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037050791] [2022-01-10 00:23:47,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037050791] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:23:47,418 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:23:47,419 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:23:47,419 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011061297] [2022-01-10 00:23:47,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:23:47,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:23:47,420 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:23:47,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:23:47,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:23:47,422 INFO L87 Difference]: Start difference. First operand 4382 states and 5119 transitions. Second operand has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:23:49,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:23:49,431 INFO L93 Difference]: Finished difference Result 10910 states and 12924 transitions. [2022-01-10 00:23:49,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:23:49,432 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 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 259 [2022-01-10 00:23:49,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:23:49,449 INFO L225 Difference]: With dead ends: 10910 [2022-01-10 00:23:49,450 INFO L226 Difference]: Without dead ends: 6530 [2022-01-10 00:23:49,453 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:23:49,454 INFO L933 BasicCegarLoop]: 367 mSDtfsCounter, 466 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 1294 mSolverCounterSat, 262 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 466 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 1556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 262 IncrementalHoareTripleChecker+Valid, 1294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-01-10 00:23:49,454 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [466 Valid, 413 Invalid, 1556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [262 Valid, 1294 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-01-10 00:23:49,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6530 states. [2022-01-10 00:23:49,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6530 to 6096. [2022-01-10 00:23:49,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6096 states, 6095 states have (on average 1.188515176374077) internal successors, (7244), 6095 states have internal predecessors, (7244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:23:49,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6096 states to 6096 states and 7244 transitions. [2022-01-10 00:23:49,538 INFO L78 Accepts]: Start accepts. Automaton has 6096 states and 7244 transitions. Word has length 259 [2022-01-10 00:23:49,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:23:49,539 INFO L470 AbstractCegarLoop]: Abstraction has 6096 states and 7244 transitions. [2022-01-10 00:23:49,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:23:49,539 INFO L276 IsEmpty]: Start isEmpty. Operand 6096 states and 7244 transitions. [2022-01-10 00:23:49,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2022-01-10 00:23:49,543 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:23:49,543 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:23:49,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 00:23:49,543 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:23:49,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:23:49,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1988884689, now seen corresponding path program 1 times [2022-01-10 00:23:49,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:23:49,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994800990] [2022-01-10 00:23:49,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:23:49,544 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:23:49,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:23:49,681 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 243 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-01-10 00:23:49,681 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:23:49,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994800990] [2022-01-10 00:23:49,682 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994800990] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:23:49,682 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:23:49,682 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:23:49,682 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317500489] [2022-01-10 00:23:49,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:23:49,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:23:49,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:23:49,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:23:49,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:23:49,683 INFO L87 Difference]: Start difference. First operand 6096 states and 7244 transitions. Second operand has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:23:51,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:23:51,589 INFO L93 Difference]: Finished difference Result 15624 states and 18733 transitions. [2022-01-10 00:23:51,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:23:51,591 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 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 271 [2022-01-10 00:23:51,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:23:51,616 INFO L225 Difference]: With dead ends: 15624 [2022-01-10 00:23:51,616 INFO L226 Difference]: Without dead ends: 9093 [2022-01-10 00:23:51,624 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:23:51,625 INFO L933 BasicCegarLoop]: 584 mSDtfsCounter, 494 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 1239 mSolverCounterSat, 349 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 494 SdHoareTripleChecker+Valid, 627 SdHoareTripleChecker+Invalid, 1588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 349 IncrementalHoareTripleChecker+Valid, 1239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-01-10 00:23:51,625 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [494 Valid, 627 Invalid, 1588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [349 Valid, 1239 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-01-10 00:23:51,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9093 states. [2022-01-10 00:23:51,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9093 to 8660. [2022-01-10 00:23:51,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8660 states, 8659 states have (on average 1.1809677791892828) internal successors, (10226), 8659 states have internal predecessors, (10226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:23:51,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8660 states to 8660 states and 10226 transitions. [2022-01-10 00:23:51,766 INFO L78 Accepts]: Start accepts. Automaton has 8660 states and 10226 transitions. Word has length 271 [2022-01-10 00:23:51,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:23:51,767 INFO L470 AbstractCegarLoop]: Abstraction has 8660 states and 10226 transitions. [2022-01-10 00:23:51,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:23:51,768 INFO L276 IsEmpty]: Start isEmpty. Operand 8660 states and 10226 transitions. [2022-01-10 00:23:51,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2022-01-10 00:23:51,772 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:23:51,772 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:23:51,772 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 00:23:51,772 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:23:51,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:23:51,773 INFO L85 PathProgramCache]: Analyzing trace with hash 786678162, now seen corresponding path program 1 times [2022-01-10 00:23:51,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:23:51,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535541618] [2022-01-10 00:23:51,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:23:51,774 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:23:51,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:23:51,899 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 253 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-01-10 00:23:51,900 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:23:51,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535541618] [2022-01-10 00:23:51,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535541618] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:23:51,900 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:23:51,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:23:51,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106027089] [2022-01-10 00:23:51,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:23:51,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:23:51,901 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:23:51,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:23:51,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:23:51,901 INFO L87 Difference]: Start difference. First operand 8660 states and 10226 transitions. Second operand has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:23:53,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:23:53,475 INFO L93 Difference]: Finished difference Result 20718 states and 24610 transitions. [2022-01-10 00:23:53,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:23:53,475 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 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 276 [2022-01-10 00:23:53,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:23:53,493 INFO L225 Difference]: With dead ends: 20718 [2022-01-10 00:23:53,493 INFO L226 Difference]: Without dead ends: 12060 [2022-01-10 00:23:53,502 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:23:53,502 INFO L933 BasicCegarLoop]: 760 mSDtfsCounter, 379 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 1178 mSolverCounterSat, 239 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 826 SdHoareTripleChecker+Invalid, 1417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 239 IncrementalHoareTripleChecker+Valid, 1178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-10 00:23:53,503 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [379 Valid, 826 Invalid, 1417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [239 Valid, 1178 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-10 00:23:53,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12060 states. [2022-01-10 00:23:53,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12060 to 11210. [2022-01-10 00:23:53,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11210 states, 11209 states have (on average 1.157819609242573) internal successors, (12978), 11209 states have internal predecessors, (12978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:23:53,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11210 states to 11210 states and 12978 transitions. [2022-01-10 00:23:53,640 INFO L78 Accepts]: Start accepts. Automaton has 11210 states and 12978 transitions. Word has length 276 [2022-01-10 00:23:53,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:23:53,641 INFO L470 AbstractCegarLoop]: Abstraction has 11210 states and 12978 transitions. [2022-01-10 00:23:53,641 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:23:53,641 INFO L276 IsEmpty]: Start isEmpty. Operand 11210 states and 12978 transitions. [2022-01-10 00:23:53,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2022-01-10 00:23:53,645 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:23:53,646 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:23:53,646 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 00:23:53,647 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:23:53,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:23:53,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1150250055, now seen corresponding path program 1 times [2022-01-10 00:23:53,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:23:53,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523462735] [2022-01-10 00:23:53,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:23:53,650 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:23:53,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:23:53,861 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 253 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-01-10 00:23:53,861 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:23:53,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523462735] [2022-01-10 00:23:53,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523462735] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:23:53,862 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:23:53,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 00:23:53,862 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248520998] [2022-01-10 00:23:53,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:23:53,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 00:23:53,863 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:23:53,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 00:23:53,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 00:23:53,864 INFO L87 Difference]: Start difference. First operand 11210 states and 12978 transitions. Second operand has 4 states, 4 states have (on average 54.5) internal successors, (218), 4 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:23:57,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:23:57,017 INFO L93 Difference]: Finished difference Result 40370 states and 46572 transitions. [2022-01-10 00:23:57,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 00:23:57,017 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 54.5) internal successors, (218), 4 states have internal predecessors, (218), 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 299 [2022-01-10 00:23:57,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:23:57,063 INFO L225 Difference]: With dead ends: 40370 [2022-01-10 00:23:57,064 INFO L226 Difference]: Without dead ends: 27449 [2022-01-10 00:23:57,081 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 00:23:57,081 INFO L933 BasicCegarLoop]: 205 mSDtfsCounter, 876 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 2596 mSolverCounterSat, 477 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 876 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 3073 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 477 IncrementalHoareTripleChecker+Valid, 2596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-01-10 00:23:57,082 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [876 Valid, 295 Invalid, 3073 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [477 Valid, 2596 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-01-10 00:23:57,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27449 states. [2022-01-10 00:23:57,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27449 to 26980. [2022-01-10 00:23:57,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26980 states, 26979 states have (on average 1.1290262796990251) internal successors, (30460), 26979 states have internal predecessors, (30460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:23:57,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26980 states to 26980 states and 30460 transitions. [2022-01-10 00:23:57,418 INFO L78 Accepts]: Start accepts. Automaton has 26980 states and 30460 transitions. Word has length 299 [2022-01-10 00:23:57,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:23:57,418 INFO L470 AbstractCegarLoop]: Abstraction has 26980 states and 30460 transitions. [2022-01-10 00:23:57,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.5) internal successors, (218), 4 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:23:57,418 INFO L276 IsEmpty]: Start isEmpty. Operand 26980 states and 30460 transitions. [2022-01-10 00:23:57,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2022-01-10 00:23:57,427 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:23:57,428 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:23:57,428 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 00:23:57,428 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:23:57,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:23:57,428 INFO L85 PathProgramCache]: Analyzing trace with hash -342445042, now seen corresponding path program 1 times [2022-01-10 00:23:57,429 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:23:57,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699631898] [2022-01-10 00:23:57,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:23:57,429 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:23:57,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:23:57,608 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 216 proven. 82 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-01-10 00:23:57,608 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:23:57,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699631898] [2022-01-10 00:23:57,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699631898] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 00:23:57,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1533737067] [2022-01-10 00:23:57,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:23:57,609 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 00:23:57,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 00:23:57,619 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 00:23:57,654 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-10 00:23:57,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:23:57,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 518 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 00:23:57,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 00:23:58,831 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 182 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:23:58,832 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 00:23:59,573 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 335 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:23:59,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1533737067] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-10 00:23:59,573 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-10 00:23:59,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3, 4] total 7 [2022-01-10 00:23:59,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935619708] [2022-01-10 00:23:59,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:23:59,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 00:23:59,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:23:59,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 00:23:59,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2022-01-10 00:23:59,575 INFO L87 Difference]: Start difference. First operand 26980 states and 30460 transitions. Second operand has 5 states, 5 states have (on average 76.0) internal successors, (380), 4 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:24:02,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:24:02,661 INFO L93 Difference]: Finished difference Result 75670 states and 85245 transitions. [2022-01-10 00:24:02,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 00:24:02,662 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 76.0) internal successors, (380), 4 states have internal predecessors, (380), 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 380 [2022-01-10 00:24:02,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:24:02,751 INFO L225 Difference]: With dead ends: 75670 [2022-01-10 00:24:02,751 INFO L226 Difference]: Without dead ends: 47840 [2022-01-10 00:24:02,783 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 761 GetRequests, 753 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2022-01-10 00:24:02,784 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 1545 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 2674 mSolverCounterSat, 687 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1545 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 3361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 687 IncrementalHoareTripleChecker+Valid, 2674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-01-10 00:24:02,784 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1545 Valid, 165 Invalid, 3361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [687 Valid, 2674 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-01-10 00:24:02,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47840 states. [2022-01-10 00:24:03,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47840 to 46123. [2022-01-10 00:24:03,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46123 states, 46122 states have (on average 1.102012054984606) internal successors, (50827), 46122 states have internal predecessors, (50827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:24:03,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46123 states to 46123 states and 50827 transitions. [2022-01-10 00:24:03,332 INFO L78 Accepts]: Start accepts. Automaton has 46123 states and 50827 transitions. Word has length 380 [2022-01-10 00:24:03,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:24:03,332 INFO L470 AbstractCegarLoop]: Abstraction has 46123 states and 50827 transitions. [2022-01-10 00:24:03,333 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 76.0) internal successors, (380), 4 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:24:03,333 INFO L276 IsEmpty]: Start isEmpty. Operand 46123 states and 50827 transitions. [2022-01-10 00:24:03,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2022-01-10 00:24:03,343 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:24:03,343 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:24:03,376 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-10 00:24:03,555 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,SelfDestructingSolverStorable9 [2022-01-10 00:24:03,556 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:24:03,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:24:03,556 INFO L85 PathProgramCache]: Analyzing trace with hash -60760240, now seen corresponding path program 1 times [2022-01-10 00:24:03,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:24:03,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790511438] [2022-01-10 00:24:03,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:24:03,557 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:24:03,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:24:03,713 INFO L134 CoverageAnalysis]: Checked inductivity of 637 backedges. 519 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2022-01-10 00:24:03,713 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:24:03,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790511438] [2022-01-10 00:24:03,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790511438] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:24:03,714 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:24:03,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:24:03,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223112014] [2022-01-10 00:24:03,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:24:03,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:24:03,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:24:03,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:24:03,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:24:03,716 INFO L87 Difference]: Start difference. First operand 46123 states and 50827 transitions. Second operand has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:24:05,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:24:05,804 INFO L93 Difference]: Finished difference Result 108860 states and 120238 transitions. [2022-01-10 00:24:05,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:24:05,805 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 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 385 [2022-01-10 00:24:05,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:24:05,925 INFO L225 Difference]: With dead ends: 108860 [2022-01-10 00:24:05,926 INFO L226 Difference]: Without dead ends: 62739 [2022-01-10 00:24:05,967 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:24:05,968 INFO L933 BasicCegarLoop]: 285 mSDtfsCounter, 397 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 1188 mSolverCounterSat, 193 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 397 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 1381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 193 IncrementalHoareTripleChecker+Valid, 1188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-10 00:24:05,968 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [397 Valid, 334 Invalid, 1381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [193 Valid, 1188 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-01-10 00:24:06,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62739 states. [2022-01-10 00:24:06,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62739 to 61439. [2022-01-10 00:24:06,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61439 states, 61438 states have (on average 1.0894885901233764) internal successors, (66936), 61438 states have internal predecessors, (66936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:24:06,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61439 states to 61439 states and 66936 transitions. [2022-01-10 00:24:06,777 INFO L78 Accepts]: Start accepts. Automaton has 61439 states and 66936 transitions. Word has length 385 [2022-01-10 00:24:06,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:24:06,779 INFO L470 AbstractCegarLoop]: Abstraction has 61439 states and 66936 transitions. [2022-01-10 00:24:06,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:24:06,780 INFO L276 IsEmpty]: Start isEmpty. Operand 61439 states and 66936 transitions. [2022-01-10 00:24:06,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2022-01-10 00:24:06,789 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:24:06,790 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:24:06,790 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 00:24:06,791 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:24:06,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:24:06,792 INFO L85 PathProgramCache]: Analyzing trace with hash 2071797125, now seen corresponding path program 1 times [2022-01-10 00:24:06,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:24:06,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413475706] [2022-01-10 00:24:06,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:24:06,792 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:24:07,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:24:07,169 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2022-01-10 00:24:07,169 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:24:07,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413475706] [2022-01-10 00:24:07,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413475706] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:24:07,169 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:24:07,169 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:24:07,170 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095530600] [2022-01-10 00:24:07,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:24:07,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:24:07,170 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:24:07,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:24:07,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:24:07,171 INFO L87 Difference]: Start difference. First operand 61439 states and 66936 transitions. Second operand has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:24:09,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:24:09,201 INFO L93 Difference]: Finished difference Result 140364 states and 152848 transitions. [2022-01-10 00:24:09,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:24:09,201 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 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 402 [2022-01-10 00:24:09,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:24:09,280 INFO L225 Difference]: With dead ends: 140364 [2022-01-10 00:24:09,280 INFO L226 Difference]: Without dead ends: 78496 [2022-01-10 00:24:09,308 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:24:09,309 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 460 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 1210 mSolverCounterSat, 260 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 460 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 1470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 260 IncrementalHoareTripleChecker+Valid, 1210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-10 00:24:09,309 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [460 Valid, 203 Invalid, 1470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [260 Valid, 1210 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-01-10 00:24:09,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78496 states. [2022-01-10 00:24:10,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78496 to 73347. [2022-01-10 00:24:10,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73347 states, 73346 states have (on average 1.0878711858860741) internal successors, (79791), 73346 states have internal predecessors, (79791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:24:10,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73347 states to 73347 states and 79791 transitions. [2022-01-10 00:24:10,357 INFO L78 Accepts]: Start accepts. Automaton has 73347 states and 79791 transitions. Word has length 402 [2022-01-10 00:24:10,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:24:10,359 INFO L470 AbstractCegarLoop]: Abstraction has 73347 states and 79791 transitions. [2022-01-10 00:24:10,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:24:10,359 INFO L276 IsEmpty]: Start isEmpty. Operand 73347 states and 79791 transitions. [2022-01-10 00:24:10,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 420 [2022-01-10 00:24:10,390 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:24:10,391 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:24:10,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 00:24:10,391 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:24:10,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:24:10,392 INFO L85 PathProgramCache]: Analyzing trace with hash -496460439, now seen corresponding path program 1 times [2022-01-10 00:24:10,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:24:10,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557556595] [2022-01-10 00:24:10,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:24:10,392 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:24:10,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:24:10,685 INFO L134 CoverageAnalysis]: Checked inductivity of 631 backedges. 325 proven. 37 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2022-01-10 00:24:10,685 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:24:10,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557556595] [2022-01-10 00:24:10,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557556595] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 00:24:10,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1064446705] [2022-01-10 00:24:10,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:24:10,686 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 00:24:10,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 00:24:10,688 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 00:24:10,692 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-10 00:24:10,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:24:10,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 580 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 00:24:10,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 00:24:11,797 INFO L134 CoverageAnalysis]: Checked inductivity of 631 backedges. 403 proven. 82 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2022-01-10 00:24:11,797 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 00:24:13,226 INFO L134 CoverageAnalysis]: Checked inductivity of 631 backedges. 403 proven. 82 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2022-01-10 00:24:13,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1064446705] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 00:24:13,227 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 00:24:13,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 9 [2022-01-10 00:24:13,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812312871] [2022-01-10 00:24:13,227 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 00:24:13,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 00:24:13,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:24:13,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 00:24:13,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-01-10 00:24:13,229 INFO L87 Difference]: Start difference. First operand 73347 states and 79791 transitions. Second operand has 9 states, 9 states have (on average 81.55555555555556) internal successors, (734), 9 states have internal predecessors, (734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:24:25,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:24:25,218 INFO L93 Difference]: Finished difference Result 197395 states and 214294 transitions. [2022-01-10 00:24:25,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-10 00:24:25,218 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 81.55555555555556) internal successors, (734), 9 states have internal predecessors, (734), 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 419 [2022-01-10 00:24:25,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:24:25,368 INFO L225 Difference]: With dead ends: 197395 [2022-01-10 00:24:25,368 INFO L226 Difference]: Without dead ends: 122773 [2022-01-10 00:24:25,398 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 871 GetRequests, 849 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=150, Invalid=402, Unknown=0, NotChecked=0, Total=552 [2022-01-10 00:24:25,400 INFO L933 BasicCegarLoop]: 83 mSDtfsCounter, 10829 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 12694 mSolverCounterSat, 2112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10829 SdHoareTripleChecker+Valid, 375 SdHoareTripleChecker+Invalid, 14806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2112 IncrementalHoareTripleChecker+Valid, 12694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.0s IncrementalHoareTripleChecker+Time [2022-01-10 00:24:25,400 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10829 Valid, 375 Invalid, 14806 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2112 Valid, 12694 Invalid, 0 Unknown, 0 Unchecked, 11.0s Time] [2022-01-10 00:24:25,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122773 states.