/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/Problem13_label46.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 00:11:20,675 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 00:11:20,677 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 00:11:20,721 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 00:11:20,801 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 00:11:20,837 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 00:11:20,837 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 00:11:20,838 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 00:11:20,838 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 00:11:20,839 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 00:11:20,839 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 00:11:20,839 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 00:11:20,840 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 00:11:20,840 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 00:11:20,840 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 00:11:20,841 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 00:11:20,841 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 00:11:20,841 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 00:11:20,841 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 00:11:20,841 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 00:11:20,842 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 00:11:20,842 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 00:11:20,842 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 00:11:20,842 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 00:11:20,842 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 00:11:20,842 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 00:11:20,842 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 00:11:20,842 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 00:11:20,843 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 00:11:20,843 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 00:11:20,843 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 00:11:20,843 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 00:11:20,843 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 00:11:20,843 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 00:11:20,843 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 00:11:20,843 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 00:11:21,109 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 00:11:21,145 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 00:11:21,148 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 00:11:21,149 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 00:11:21,149 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 00:11:21,150 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label46.c [2022-01-10 00:11:21,209 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6cdf1b9c5/782aa99083c946c4a05130d5bf61e8bc/FLAG37cb87e39 [2022-01-10 00:11:21,959 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 00:11:21,960 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label46.c [2022-01-10 00:11:21,996 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6cdf1b9c5/782aa99083c946c4a05130d5bf61e8bc/FLAG37cb87e39 [2022-01-10 00:11:22,201 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6cdf1b9c5/782aa99083c946c4a05130d5bf61e8bc [2022-01-10 00:11:22,206 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 00:11:22,212 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 00:11:22,213 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 00:11:22,214 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 00:11:22,217 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 00:11:22,218 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:11:22" (1/1) ... [2022-01-10 00:11:22,219 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@275b093b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:11:22, skipping insertion in model container [2022-01-10 00:11:22,220 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:11:22" (1/1) ... [2022-01-10 00:11:22,227 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 00:11:22,356 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 00:11:22,698 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/Problem13_label46.c[9366,9379] [2022-01-10 00:11:23,502 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 00:11:23,509 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 00:11:23,544 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/Problem13_label46.c[9366,9379] [2022-01-10 00:11:24,018 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 00:11:24,040 INFO L208 MainTranslator]: Completed translation [2022-01-10 00:11:24,041 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:11:24 WrapperNode [2022-01-10 00:11:24,041 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 00:11:24,042 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 00:11:24,042 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 00:11:24,042 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 00:11:24,049 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:11:24" (1/1) ... [2022-01-10 00:11:24,132 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:11:24" (1/1) ... [2022-01-10 00:11:24,712 INFO L137 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5583 [2022-01-10 00:11:24,712 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 00:11:24,713 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 00:11:24,713 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 00:11:24,713 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 00:11:24,721 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:11:24" (1/1) ... [2022-01-10 00:11:24,721 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:11:24" (1/1) ... [2022-01-10 00:11:24,817 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:11:24" (1/1) ... [2022-01-10 00:11:24,817 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:11:24" (1/1) ... [2022-01-10 00:11:25,053 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:11:24" (1/1) ... [2022-01-10 00:11:25,106 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:11:24" (1/1) ... [2022-01-10 00:11:25,193 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:11:24" (1/1) ... [2022-01-10 00:11:25,326 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 00:11:25,328 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 00:11:25,328 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 00:11:25,328 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 00:11:25,329 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:11:24" (1/1) ... [2022-01-10 00:11:25,335 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 00:11:25,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 00:11:25,361 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 00:11:25,383 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 00:11:25,398 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 00:11:25,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-10 00:11:25,399 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 00:11:25,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 00:11:25,483 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 00:11:25,484 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 00:11:30,091 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 00:11:30,110 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 00:11:30,111 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 00:11:30,113 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:11:30 BoogieIcfgContainer [2022-01-10 00:11:30,114 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 00:11:30,115 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 00:11:30,115 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 00:11:30,118 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 00:11:30,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 12:11:22" (1/3) ... [2022-01-10 00:11:30,119 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6aa857fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:11:30, skipping insertion in model container [2022-01-10 00:11:30,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:11:24" (2/3) ... [2022-01-10 00:11:30,120 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6aa857fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:11:30, skipping insertion in model container [2022-01-10 00:11:30,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:11:30" (3/3) ... [2022-01-10 00:11:30,121 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem13_label46.c [2022-01-10 00:11:30,125 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 00:11:30,125 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 00:11:30,173 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 00:11:30,179 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 00:11:30,179 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 00:11:30,269 INFO L276 IsEmpty]: Start isEmpty. Operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 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 00:11:30,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 00:11:30,279 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:11:30,280 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:11:30,281 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:11:30,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:11:30,286 INFO L85 PathProgramCache]: Analyzing trace with hash -215114758, now seen corresponding path program 1 times [2022-01-10 00:11:30,293 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:11:30,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50124956] [2022-01-10 00:11:30,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:11:30,295 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:11:30,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:11:30,698 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 00:11:30,698 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:11:30,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50124956] [2022-01-10 00:11:30,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50124956] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:11:30,699 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:11:30,700 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:11:30,701 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032838158] [2022-01-10 00:11:30,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:11:30,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 00:11:30,707 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:11:30,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 00:11:30,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 00:11:30,742 INFO L87 Difference]: Start difference. First operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 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 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:11:37,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:11:37,155 INFO L93 Difference]: Finished difference Result 3829 states and 7206 transitions. [2022-01-10 00:11:37,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 00:11:37,158 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-01-10 00:11:37,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:11:37,182 INFO L225 Difference]: With dead ends: 3829 [2022-01-10 00:11:37,183 INFO L226 Difference]: Without dead ends: 2664 [2022-01-10 00:11:37,189 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 00:11:37,193 INFO L933 BasicCegarLoop]: 761 mSDtfsCounter, 2658 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 4246 mSolverCounterSat, 1610 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2658 SdHoareTripleChecker+Valid, 1067 SdHoareTripleChecker+Invalid, 5856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1610 IncrementalHoareTripleChecker+Valid, 4246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-01-10 00:11:37,194 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2658 Valid, 1067 Invalid, 5856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1610 Valid, 4246 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2022-01-10 00:11:37,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2664 states. [2022-01-10 00:11:37,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2664 to 2663. [2022-01-10 00:11:37,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2663 states, 2662 states have (on average 1.460931630353118) internal successors, (3889), 2662 states have internal predecessors, (3889), 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 00:11:37,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2663 states to 2663 states and 3889 transitions. [2022-01-10 00:11:37,329 INFO L78 Accepts]: Start accepts. Automaton has 2663 states and 3889 transitions. Word has length 66 [2022-01-10 00:11:37,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:11:37,330 INFO L470 AbstractCegarLoop]: Abstraction has 2663 states and 3889 transitions. [2022-01-10 00:11:37,331 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:11:37,331 INFO L276 IsEmpty]: Start isEmpty. Operand 2663 states and 3889 transitions. [2022-01-10 00:11:37,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2022-01-10 00:11:37,345 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:11:37,345 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:11:37,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 00:11:37,346 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:11:37,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:11:37,349 INFO L85 PathProgramCache]: Analyzing trace with hash 1130712773, now seen corresponding path program 1 times [2022-01-10 00:11:37,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:11:37,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792636343] [2022-01-10 00:11:37,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:11:37,350 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:11:37,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:11:37,631 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:11:37,632 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:11:37,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792636343] [2022-01-10 00:11:37,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792636343] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:11:37,633 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:11:37,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:11:37,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692241734] [2022-01-10 00:11:37,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:11:37,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 00:11:37,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:11:37,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 00:11:37,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 00:11:37,638 INFO L87 Difference]: Start difference. First operand 2663 states and 3889 transitions. Second operand has 4 states, 4 states have (on average 47.75) 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 00:11:44,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:11:44,082 INFO L93 Difference]: Finished difference Result 7864 states and 12669 transitions. [2022-01-10 00:11:44,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 00:11:44,083 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 47.75) 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 00:11:44,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:11:44,110 INFO L225 Difference]: With dead ends: 7864 [2022-01-10 00:11:44,110 INFO L226 Difference]: Without dead ends: 5990 [2022-01-10 00:11:44,116 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 00:11:44,117 INFO L933 BasicCegarLoop]: 894 mSDtfsCounter, 1613 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 6333 mSolverCounterSat, 831 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1613 SdHoareTripleChecker+Valid, 1191 SdHoareTripleChecker+Invalid, 7164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 831 IncrementalHoareTripleChecker+Valid, 6333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-01-10 00:11:44,118 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1613 Valid, 1191 Invalid, 7164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [831 Valid, 6333 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2022-01-10 00:11:44,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5990 states. [2022-01-10 00:11:44,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5990 to 5859. [2022-01-10 00:11:44,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5859 states, 5858 states have (on average 1.4452031410037556) internal successors, (8466), 5858 states have internal predecessors, (8466), 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 00:11:44,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5859 states to 5859 states and 8466 transitions. [2022-01-10 00:11:44,233 INFO L78 Accepts]: Start accepts. Automaton has 5859 states and 8466 transitions. Word has length 191 [2022-01-10 00:11:44,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:11:44,238 INFO L470 AbstractCegarLoop]: Abstraction has 5859 states and 8466 transitions. [2022-01-10 00:11:44,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.75) 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 00:11:44,239 INFO L276 IsEmpty]: Start isEmpty. Operand 5859 states and 8466 transitions. [2022-01-10 00:11:44,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2022-01-10 00:11:44,242 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:11:44,242 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 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 00:11:44,242 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 00:11:44,243 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:11:44,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:11:44,244 INFO L85 PathProgramCache]: Analyzing trace with hash -705330670, now seen corresponding path program 1 times [2022-01-10 00:11:44,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:11:44,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772215690] [2022-01-10 00:11:44,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:11:44,245 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:11:44,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:11:44,399 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-01-10 00:11:44,399 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:11:44,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772215690] [2022-01-10 00:11:44,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772215690] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:11:44,402 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:11:44,402 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 00:11:44,402 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246997855] [2022-01-10 00:11:44,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:11:44,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:11:44,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:11:44,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:11:44,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:11:44,404 INFO L87 Difference]: Start difference. First operand 5859 states and 8466 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 states have internal predecessors, (164), 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 00:11:47,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:11:47,788 INFO L93 Difference]: Finished difference Result 15687 states and 23390 transitions. [2022-01-10 00:11:47,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:11:47,791 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 states have internal predecessors, (164), 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 233 [2022-01-10 00:11:47,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:11:47,831 INFO L225 Difference]: With dead ends: 15687 [2022-01-10 00:11:47,832 INFO L226 Difference]: Without dead ends: 10617 [2022-01-10 00:11:47,840 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 00:11:47,841 INFO L933 BasicCegarLoop]: 785 mSDtfsCounter, 919 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 2554 mSolverCounterSat, 756 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 919 SdHoareTripleChecker+Valid, 918 SdHoareTripleChecker+Invalid, 3310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 756 IncrementalHoareTripleChecker+Valid, 2554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-01-10 00:11:47,842 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [919 Valid, 918 Invalid, 3310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [756 Valid, 2554 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-01-10 00:11:47,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10617 states. [2022-01-10 00:11:47,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10617 to 10608. [2022-01-10 00:11:48,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10608 states, 10607 states have (on average 1.3551428302064674) internal successors, (14374), 10607 states have internal predecessors, (14374), 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 00:11:48,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10608 states to 10608 states and 14374 transitions. [2022-01-10 00:11:48,025 INFO L78 Accepts]: Start accepts. Automaton has 10608 states and 14374 transitions. Word has length 233 [2022-01-10 00:11:48,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:11:48,026 INFO L470 AbstractCegarLoop]: Abstraction has 10608 states and 14374 transitions. [2022-01-10 00:11:48,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 states have internal predecessors, (164), 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 00:11:48,027 INFO L276 IsEmpty]: Start isEmpty. Operand 10608 states and 14374 transitions. [2022-01-10 00:11:48,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2022-01-10 00:11:48,031 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:11:48,031 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:11:48,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 00:11:48,032 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:11:48,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:11:48,032 INFO L85 PathProgramCache]: Analyzing trace with hash 55372431, now seen corresponding path program 1 times [2022-01-10 00:11:48,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:11:48,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357966558] [2022-01-10 00:11:48,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:11:48,034 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:11:48,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:11:48,162 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-01-10 00:11:48,163 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:11:48,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357966558] [2022-01-10 00:11:48,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357966558] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:11:48,163 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:11:48,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 00:11:48,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043107229] [2022-01-10 00:11:48,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:11:48,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:11:48,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:11:48,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:11:48,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:11:48,165 INFO L87 Difference]: Start difference. First operand 10608 states and 14374 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 states have internal predecessors, (164), 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 00:11:51,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:11:51,371 INFO L93 Difference]: Finished difference Result 28351 states and 39240 transitions. [2022-01-10 00:11:51,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:11:51,371 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 states have internal predecessors, (164), 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 247 [2022-01-10 00:11:51,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:11:51,421 INFO L225 Difference]: With dead ends: 28351 [2022-01-10 00:11:51,421 INFO L226 Difference]: Without dead ends: 18532 [2022-01-10 00:11:51,436 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 00:11:51,437 INFO L933 BasicCegarLoop]: 448 mSDtfsCounter, 909 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 2872 mSolverCounterSat, 544 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 909 SdHoareTripleChecker+Valid, 613 SdHoareTripleChecker+Invalid, 3416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 544 IncrementalHoareTripleChecker+Valid, 2872 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-01-10 00:11:51,438 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [909 Valid, 613 Invalid, 3416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [544 Valid, 2872 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-01-10 00:11:51,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18532 states. [2022-01-10 00:11:51,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18532 to 18523. [2022-01-10 00:11:51,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18523 states, 18522 states have (on average 1.3251268761472843) internal successors, (24544), 18522 states have internal predecessors, (24544), 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 00:11:51,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18523 states to 18523 states and 24544 transitions. [2022-01-10 00:11:51,848 INFO L78 Accepts]: Start accepts. Automaton has 18523 states and 24544 transitions. Word has length 247 [2022-01-10 00:11:51,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:11:51,849 INFO L470 AbstractCegarLoop]: Abstraction has 18523 states and 24544 transitions. [2022-01-10 00:11:51,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 states have internal predecessors, (164), 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 00:11:51,849 INFO L276 IsEmpty]: Start isEmpty. Operand 18523 states and 24544 transitions. [2022-01-10 00:11:51,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2022-01-10 00:11:51,853 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:11:51,853 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-01-10 00:11:51,854 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 00:11:51,855 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:11:51,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:11:51,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1367122238, now seen corresponding path program 1 times [2022-01-10 00:11:51,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:11:51,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829042743] [2022-01-10 00:11:51,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:11:51,857 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:11:51,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:11:51,977 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 222 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:11:51,977 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:11:51,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829042743] [2022-01-10 00:11:51,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829042743] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:11:51,978 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:11:51,978 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:11:51,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687019598] [2022-01-10 00:11:51,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:11:51,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:11:51,980 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:11:51,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:11:51,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:11:51,981 INFO L87 Difference]: Start difference. First operand 18523 states and 24544 transitions. Second operand has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 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 00:11:55,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:11:55,057 INFO L93 Difference]: Finished difference Result 52015 states and 69799 transitions. [2022-01-10 00:11:55,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:11:55,058 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 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 265 [2022-01-10 00:11:55,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:11:55,132 INFO L225 Difference]: With dead ends: 52015 [2022-01-10 00:11:55,132 INFO L226 Difference]: Without dead ends: 34281 [2022-01-10 00:11:55,159 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:11:55,162 INFO L933 BasicCegarLoop]: 833 mSDtfsCounter, 852 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 2393 mSolverCounterSat, 915 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 852 SdHoareTripleChecker+Valid, 951 SdHoareTripleChecker+Invalid, 3308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 915 IncrementalHoareTripleChecker+Valid, 2393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-01-10 00:11:55,163 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [852 Valid, 951 Invalid, 3308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [915 Valid, 2393 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-01-10 00:11:55,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34281 states. [2022-01-10 00:11:55,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34281 to 34271. [2022-01-10 00:11:55,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34271 states, 34270 states have (on average 1.25503355704698) internal successors, (43010), 34270 states have internal predecessors, (43010), 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 00:11:55,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34271 states to 34271 states and 43010 transitions. [2022-01-10 00:11:55,905 INFO L78 Accepts]: Start accepts. Automaton has 34271 states and 43010 transitions. Word has length 265 [2022-01-10 00:11:55,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:11:55,906 INFO L470 AbstractCegarLoop]: Abstraction has 34271 states and 43010 transitions. [2022-01-10 00:11:55,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 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 00:11:55,906 INFO L276 IsEmpty]: Start isEmpty. Operand 34271 states and 43010 transitions. [2022-01-10 00:11:55,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2022-01-10 00:11:55,911 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:11:55,912 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 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 00:11:55,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 00:11:55,912 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:11:55,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:11:55,913 INFO L85 PathProgramCache]: Analyzing trace with hash 1842505555, now seen corresponding path program 1 times [2022-01-10 00:11:55,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:11:55,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653064142] [2022-01-10 00:11:55,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:11:55,916 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:11:55,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:11:56,076 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2022-01-10 00:11:56,077 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:11:56,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653064142] [2022-01-10 00:11:56,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653064142] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:11:56,077 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:11:56,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 00:11:56,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159860991] [2022-01-10 00:11:56,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:11:56,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:11:56,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:11:56,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:11:56,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:11:56,079 INFO L87 Difference]: Start difference. First operand 34271 states and 43010 transitions. Second operand has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 2 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:11:59,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:11:59,501 INFO L93 Difference]: Finished difference Result 92929 states and 117620 transitions. [2022-01-10 00:11:59,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:11:59,501 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 2 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 296 [2022-01-10 00:11:59,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:11:59,601 INFO L225 Difference]: With dead ends: 92929 [2022-01-10 00:11:59,602 INFO L226 Difference]: Without dead ends: 59447 [2022-01-10 00:11:59,629 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 00:11:59,632 INFO L933 BasicCegarLoop]: 839 mSDtfsCounter, 857 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 2308 mSolverCounterSat, 869 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 857 SdHoareTripleChecker+Valid, 986 SdHoareTripleChecker+Invalid, 3177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 869 IncrementalHoareTripleChecker+Valid, 2308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-01-10 00:11:59,634 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [857 Valid, 986 Invalid, 3177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [869 Valid, 2308 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-01-10 00:11:59,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59447 states. [2022-01-10 00:12:00,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59447 to 57869. [2022-01-10 00:12:00,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57869 states, 57868 states have (on average 1.1960496301928527) internal successors, (69213), 57868 states have internal predecessors, (69213), 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 00:12:00,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57869 states to 57869 states and 69213 transitions. [2022-01-10 00:12:00,766 INFO L78 Accepts]: Start accepts. Automaton has 57869 states and 69213 transitions. Word has length 296 [2022-01-10 00:12:00,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:12:00,767 INFO L470 AbstractCegarLoop]: Abstraction has 57869 states and 69213 transitions. [2022-01-10 00:12:00,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 2 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:12:00,767 INFO L276 IsEmpty]: Start isEmpty. Operand 57869 states and 69213 transitions. [2022-01-10 00:12:00,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2022-01-10 00:12:00,774 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:12:00,774 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2022-01-10 00:12:00,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 00:12:00,774 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:12:00,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:12:00,776 INFO L85 PathProgramCache]: Analyzing trace with hash -149242170, now seen corresponding path program 1 times [2022-01-10 00:12:00,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:12:00,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154194188] [2022-01-10 00:12:00,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:12:00,776 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:12:00,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:12:00,904 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 363 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-01-10 00:12:00,904 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:12:00,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154194188] [2022-01-10 00:12:00,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154194188] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:12:00,904 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:12:00,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:12:00,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338371749] [2022-01-10 00:12:00,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:12:00,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 00:12:00,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:12:00,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 00:12:00,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 00:12:00,906 INFO L87 Difference]: Start difference. First operand 57869 states and 69213 transitions. Second operand has 4 states, 4 states have (on average 67.75) internal successors, (271), 3 states have internal predecessors, (271), 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 00:12:07,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:12:07,925 INFO L93 Difference]: Finished difference Result 156098 states and 188760 transitions. [2022-01-10 00:12:07,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 00:12:07,928 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 67.75) internal successors, (271), 3 states have internal predecessors, (271), 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 334 [2022-01-10 00:12:07,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:12:08,097 INFO L225 Difference]: With dead ends: 156098 [2022-01-10 00:12:08,098 INFO L226 Difference]: Without dead ends: 99018 [2022-01-10 00:12:08,152 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 00:12:08,153 INFO L933 BasicCegarLoop]: 501 mSDtfsCounter, 1735 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 6696 mSolverCounterSat, 1118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1735 SdHoareTripleChecker+Valid, 743 SdHoareTripleChecker+Invalid, 7814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1118 IncrementalHoareTripleChecker+Valid, 6696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-01-10 00:12:08,153 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1735 Valid, 743 Invalid, 7814 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1118 Valid, 6696 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2022-01-10 00:12:08,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99018 states. [2022-01-10 00:12:09,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99018 to 98888. [2022-01-10 00:12:09,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98888 states, 98887 states have (on average 1.1899744152416394) internal successors, (117673), 98887 states have internal predecessors, (117673), 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 00:12:10,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98888 states to 98888 states and 117673 transitions. [2022-01-10 00:12:10,174 INFO L78 Accepts]: Start accepts. Automaton has 98888 states and 117673 transitions. Word has length 334 [2022-01-10 00:12:10,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:12:10,174 INFO L470 AbstractCegarLoop]: Abstraction has 98888 states and 117673 transitions. [2022-01-10 00:12:10,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 67.75) internal successors, (271), 3 states have internal predecessors, (271), 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 00:12:10,175 INFO L276 IsEmpty]: Start isEmpty. Operand 98888 states and 117673 transitions. [2022-01-10 00:12:10,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2022-01-10 00:12:10,183 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:12:10,190 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2022-01-10 00:12:10,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 00:12:10,191 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:12:10,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:12:10,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1385907952, now seen corresponding path program 1 times [2022-01-10 00:12:10,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:12:10,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135227135] [2022-01-10 00:12:10,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:12:10,192 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:12:10,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:12:10,332 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 268 proven. 0 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2022-01-10 00:12:10,332 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:12:10,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135227135] [2022-01-10 00:12:10,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135227135] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:12:10,333 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:12:10,333 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 00:12:10,333 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204774564] [2022-01-10 00:12:10,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:12:10,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:12:10,333 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:12:10,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:12:10,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:12:10,421 INFO L87 Difference]: Start difference. First operand 98888 states and 117673 transitions. Second operand has 3 states, 3 states have (on average 64.0) internal successors, (192), 2 states have internal predecessors, (192), 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)