/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/Problem16_label46.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 00:22:09,379 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 00:22:09,381 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 00:22:09,427 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 00:22:09,487 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 00:22:09,507 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 00:22:09,507 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 00:22:09,507 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 00:22:09,507 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 00:22:09,508 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 00:22:09,508 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 00:22:09,509 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 00:22:09,509 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 00:22:09,509 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 00:22:09,509 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 00:22:09,509 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 00:22:09,509 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 00:22:09,509 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 00:22:09,509 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 00:22:09,510 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 00:22:09,510 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 00:22:09,510 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 00:22:09,510 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 00:22:09,510 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 00:22:09,510 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 00:22:09,510 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 00:22:09,510 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 00:22:09,511 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 00:22:09,511 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 00:22:09,511 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 00:22:09,511 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 00:22:09,511 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 00:22:09,511 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 00:22:09,511 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 00:22:09,511 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 00:22:09,512 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 00:22:09,724 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 00:22:09,742 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 00:22:09,744 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 00:22:09,745 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 00:22:09,746 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 00:22:09,747 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label46.c [2022-01-10 00:22:09,808 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ed26ab26/2a5e6714fb8f4096aea88197c09d0b70/FLAGf183d28a8 [2022-01-10 00:22:10,421 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 00:22:10,421 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label46.c [2022-01-10 00:22:10,439 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ed26ab26/2a5e6714fb8f4096aea88197c09d0b70/FLAGf183d28a8 [2022-01-10 00:22:10,809 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ed26ab26/2a5e6714fb8f4096aea88197c09d0b70 [2022-01-10 00:22:10,812 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 00:22:10,813 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 00:22:10,814 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 00:22:10,814 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 00:22:10,818 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 00:22:10,819 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:22:10" (1/1) ... [2022-01-10 00:22:10,819 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a94e618 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:22:10, skipping insertion in model container [2022-01-10 00:22:10,820 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:22:10" (1/1) ... [2022-01-10 00:22:10,828 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 00:22:10,878 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 00:22:11,110 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/Problem16_label46.c[1899,1912] [2022-01-10 00:22:11,452 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 00:22:11,459 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 00:22:11,487 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/Problem16_label46.c[1899,1912] [2022-01-10 00:22:11,676 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 00:22:11,692 INFO L208 MainTranslator]: Completed translation [2022-01-10 00:22:11,692 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:22:11 WrapperNode [2022-01-10 00:22:11,694 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 00:22:11,695 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 00:22:11,696 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 00:22:11,696 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 00:22:11,702 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:22:11" (1/1) ... [2022-01-10 00:22:11,737 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:22:11" (1/1) ... [2022-01-10 00:22:11,853 INFO L137 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1768 [2022-01-10 00:22:11,853 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 00:22:11,854 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 00:22:11,854 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 00:22:11,854 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 00:22:11,861 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:22:11" (1/1) ... [2022-01-10 00:22:11,862 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:22:11" (1/1) ... [2022-01-10 00:22:11,878 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:22:11" (1/1) ... [2022-01-10 00:22:11,879 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:22:11" (1/1) ... [2022-01-10 00:22:11,930 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:22:11" (1/1) ... [2022-01-10 00:22:11,956 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:22:11" (1/1) ... [2022-01-10 00:22:11,976 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:22:11" (1/1) ... [2022-01-10 00:22:11,996 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 00:22:11,997 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 00:22:11,998 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 00:22:11,998 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 00:22:11,999 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:22:11" (1/1) ... [2022-01-10 00:22:12,017 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 00:22:12,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 00:22:12,048 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 00:22:12,055 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 00:22:12,080 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 00:22:12,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-10 00:22:12,081 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 00:22:12,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 00:22:12,141 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 00:22:12,142 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 00:22:13,875 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 00:22:13,891 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 00:22:13,891 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 00:22:13,894 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:22:13 BoogieIcfgContainer [2022-01-10 00:22:13,894 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 00:22:13,896 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 00:22:13,896 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 00:22:13,898 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 00:22:13,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 12:22:10" (1/3) ... [2022-01-10 00:22:13,900 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d45168d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:22:13, skipping insertion in model container [2022-01-10 00:22:13,900 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:22:11" (2/3) ... [2022-01-10 00:22:13,901 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d45168d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:22:13, skipping insertion in model container [2022-01-10 00:22:13,901 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:22:13" (3/3) ... [2022-01-10 00:22:13,902 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem16_label46.c [2022-01-10 00:22:13,907 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 00:22:13,907 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 00:22:13,963 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 00:22:13,973 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 00:22:13,973 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 00:22:14,000 INFO L276 IsEmpty]: Start isEmpty. Operand has 396 states, 394 states have (on average 1.8350253807106598) internal successors, (723), 395 states have internal predecessors, (723), 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 00:22:14,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-01-10 00:22:14,016 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:22:14,016 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:22:14,017 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:22:14,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:22:14,022 INFO L85 PathProgramCache]: Analyzing trace with hash -1657508526, now seen corresponding path program 1 times [2022-01-10 00:22:14,030 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:22:14,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721980350] [2022-01-10 00:22:14,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:22:14,031 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:22:14,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:22:14,209 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 00:22:14,210 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:22:14,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721980350] [2022-01-10 00:22:14,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721980350] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:22:14,211 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:22:14,211 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 00:22:14,213 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302841598] [2022-01-10 00:22:14,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:22:14,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:22:14,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:22:14,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:22:14,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:22:14,248 INFO L87 Difference]: Start difference. First operand has 396 states, 394 states have (on average 1.8350253807106598) internal successors, (723), 395 states have internal predecessors, (723), 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 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 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 00:22:15,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:22:15,865 INFO L93 Difference]: Finished difference Result 1122 states and 2103 transitions. [2022-01-10 00:22:15,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:22:15,868 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 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 16 [2022-01-10 00:22:15,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:22:15,897 INFO L225 Difference]: With dead ends: 1122 [2022-01-10 00:22:15,897 INFO L226 Difference]: Without dead ends: 662 [2022-01-10 00:22:15,918 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 00:22:15,921 INFO L933 BasicCegarLoop]: 246 mSDtfsCounter, 371 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 864 mSolverCounterSat, 450 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 1314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 450 IncrementalHoareTripleChecker+Valid, 864 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-10 00:22:15,921 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [371 Valid, 254 Invalid, 1314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [450 Valid, 864 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-10 00:22:15,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2022-01-10 00:22:16,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 662. [2022-01-10 00:22:16,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 662 states, 661 states have (on average 1.518910741301059) internal successors, (1004), 661 states have internal predecessors, (1004), 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 00:22:16,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 1004 transitions. [2022-01-10 00:22:16,031 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 1004 transitions. Word has length 16 [2022-01-10 00:22:16,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:22:16,031 INFO L470 AbstractCegarLoop]: Abstraction has 662 states and 1004 transitions. [2022-01-10 00:22:16,032 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 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 00:22:16,032 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 1004 transitions. [2022-01-10 00:22:16,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-10 00:22:16,034 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:22:16,034 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:22:16,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 00:22:16,035 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:22:16,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:22:16,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1382957460, now seen corresponding path program 1 times [2022-01-10 00:22:16,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:22:16,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086735330] [2022-01-10 00:22:16,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:22:16,036 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:22:16,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:22:16,225 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:22:16,225 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:22:16,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086735330] [2022-01-10 00:22:16,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086735330] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:22:16,226 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:22:16,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 00:22:16,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459236926] [2022-01-10 00:22:16,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:22:16,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:22:16,227 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:22:16,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:22:16,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:22:16,228 INFO L87 Difference]: Start difference. First operand 662 states and 1004 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 2 states have internal predecessors, (84), 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 00:22:17,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:22:17,732 INFO L93 Difference]: Finished difference Result 1980 states and 3007 transitions. [2022-01-10 00:22:17,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:22:17,732 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 2 states have internal predecessors, (84), 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 84 [2022-01-10 00:22:17,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:22:17,738 INFO L225 Difference]: With dead ends: 1980 [2022-01-10 00:22:17,738 INFO L226 Difference]: Without dead ends: 1320 [2022-01-10 00:22:17,741 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 00:22:17,742 INFO L933 BasicCegarLoop]: 212 mSDtfsCounter, 268 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 961 mSolverCounterSat, 299 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 1260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 299 IncrementalHoareTripleChecker+Valid, 961 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-10 00:22:17,742 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [268 Valid, 217 Invalid, 1260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [299 Valid, 961 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-10 00:22:17,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1320 states. [2022-01-10 00:22:17,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1320 to 1320. [2022-01-10 00:22:17,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1320 states, 1319 states have (on average 1.4556482183472328) internal successors, (1920), 1319 states have internal predecessors, (1920), 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 00:22:17,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1320 states to 1320 states and 1920 transitions. [2022-01-10 00:22:17,790 INFO L78 Accepts]: Start accepts. Automaton has 1320 states and 1920 transitions. Word has length 84 [2022-01-10 00:22:17,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:22:17,791 INFO L470 AbstractCegarLoop]: Abstraction has 1320 states and 1920 transitions. [2022-01-10 00:22:17,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 2 states have internal predecessors, (84), 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 00:22:17,791 INFO L276 IsEmpty]: Start isEmpty. Operand 1320 states and 1920 transitions. [2022-01-10 00:22:17,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-01-10 00:22:17,793 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:22:17,794 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:22:17,794 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 00:22:17,794 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:22:17,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:22:17,795 INFO L85 PathProgramCache]: Analyzing trace with hash 1999977813, now seen corresponding path program 1 times [2022-01-10 00:22:17,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:22:17,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681625180] [2022-01-10 00:22:17,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:22:17,795 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:22:17,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:22:17,862 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:22:17,863 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:22:17,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681625180] [2022-01-10 00:22:17,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681625180] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:22:17,869 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:22:17,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 00:22:17,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098712469] [2022-01-10 00:22:17,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:22:17,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:22:17,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:22:17,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:22:17,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:22:17,870 INFO L87 Difference]: Start difference. First operand 1320 states and 1920 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:22:19,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:22:19,267 INFO L93 Difference]: Finished difference Result 3954 states and 5755 transitions. [2022-01-10 00:22:19,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:22:19,267 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2022-01-10 00:22:19,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:22:19,282 INFO L225 Difference]: With dead ends: 3954 [2022-01-10 00:22:19,282 INFO L226 Difference]: Without dead ends: 2636 [2022-01-10 00:22:19,285 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 00:22:19,291 INFO L933 BasicCegarLoop]: 151 mSDtfsCounter, 369 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 811 mSolverCounterSat, 368 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 1179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 368 IncrementalHoareTripleChecker+Valid, 811 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-10 00:22:19,293 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [369 Valid, 155 Invalid, 1179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [368 Valid, 811 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-10 00:22:19,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2636 states. [2022-01-10 00:22:19,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2636 to 2636. [2022-01-10 00:22:19,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2636 states, 2635 states have (on average 1.3240986717267553) internal successors, (3489), 2635 states have internal predecessors, (3489), 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 00:22:19,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2636 states to 2636 states and 3489 transitions. [2022-01-10 00:22:19,348 INFO L78 Accepts]: Start accepts. Automaton has 2636 states and 3489 transitions. Word has length 95 [2022-01-10 00:22:19,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:22:19,349 INFO L470 AbstractCegarLoop]: Abstraction has 2636 states and 3489 transitions. [2022-01-10 00:22:19,349 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:22:19,349 INFO L276 IsEmpty]: Start isEmpty. Operand 2636 states and 3489 transitions. [2022-01-10 00:22:19,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2022-01-10 00:22:19,359 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:22:19,360 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-01-10 00:22:19,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 00:22:19,360 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:22:19,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:22:19,361 INFO L85 PathProgramCache]: Analyzing trace with hash 153262354, now seen corresponding path program 1 times [2022-01-10 00:22:19,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:22:19,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438189540] [2022-01-10 00:22:19,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:22:19,361 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:22:19,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:22:19,557 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-01-10 00:22:19,557 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:22:19,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438189540] [2022-01-10 00:22:19,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438189540] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:22:19,558 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:22:19,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 00:22:19,558 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989007993] [2022-01-10 00:22:19,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:22:19,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:22:19,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:22:19,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:22:19,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:22:19,559 INFO L87 Difference]: Start difference. First operand 2636 states and 3489 transitions. Second operand has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 2 states have internal predecessors, (200), 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 00:22:20,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:22:20,848 INFO L93 Difference]: Finished difference Result 6586 states and 8545 transitions. [2022-01-10 00:22:20,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:22:20,849 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 2 states have internal predecessors, (200), 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 213 [2022-01-10 00:22:20,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:22:20,865 INFO L225 Difference]: With dead ends: 6586 [2022-01-10 00:22:20,866 INFO L226 Difference]: Without dead ends: 3952 [2022-01-10 00:22:20,869 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 00:22:20,879 INFO L933 BasicCegarLoop]: 80 mSDtfsCounter, 277 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 883 mSolverCounterSat, 264 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 1147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 264 IncrementalHoareTripleChecker+Valid, 883 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-10 00:22:20,880 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [277 Valid, 84 Invalid, 1147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [264 Valid, 883 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-10 00:22:20,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3952 states. [2022-01-10 00:22:20,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3952 to 3952. [2022-01-10 00:22:20,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3952 states, 3951 states have (on average 1.216400911161731) internal successors, (4806), 3951 states have internal predecessors, (4806), 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 00:22:20,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3952 states to 3952 states and 4806 transitions. [2022-01-10 00:22:20,946 INFO L78 Accepts]: Start accepts. Automaton has 3952 states and 4806 transitions. Word has length 213 [2022-01-10 00:22:20,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:22:20,947 INFO L470 AbstractCegarLoop]: Abstraction has 3952 states and 4806 transitions. [2022-01-10 00:22:20,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 2 states have internal predecessors, (200), 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 00:22:20,948 INFO L276 IsEmpty]: Start isEmpty. Operand 3952 states and 4806 transitions. [2022-01-10 00:22:20,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-01-10 00:22:20,951 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:22:20,951 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:22:20,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 00:22:20,952 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:22:20,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:22:20,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1979397430, now seen corresponding path program 1 times [2022-01-10 00:22:20,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:22:20,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770835335] [2022-01-10 00:22:20,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:22:20,953 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:22:21,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:22:21,239 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:22:21,240 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:22:21,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770835335] [2022-01-10 00:22:21,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770835335] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:22:21,240 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:22:21,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:22:21,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715751651] [2022-01-10 00:22:21,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:22:21,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 00:22:21,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:22:21,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 00:22:21,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 00:22:21,242 INFO L87 Difference]: Start difference. First operand 3952 states and 4806 transitions. Second operand has 4 states, 4 states have (on average 65.25) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:22:22,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:22:22,521 INFO L93 Difference]: Finished difference Result 8269 states and 9989 transitions. [2022-01-10 00:22:22,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 00:22:22,522 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 65.25) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 261 [2022-01-10 00:22:22,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:22:22,537 INFO L225 Difference]: With dead ends: 8269 [2022-01-10 00:22:22,537 INFO L226 Difference]: Without dead ends: 4319 [2022-01-10 00:22:22,543 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 00:22:22,543 INFO L933 BasicCegarLoop]: 271 mSDtfsCounter, 175 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 1238 mSolverCounterSat, 197 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 1435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 197 IncrementalHoareTripleChecker+Valid, 1238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-10 00:22:22,544 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [175 Valid, 371 Invalid, 1435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [197 Valid, 1238 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-10 00:22:22,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4319 states. [2022-01-10 00:22:22,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4319 to 4281. [2022-01-10 00:22:22,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4281 states, 4280 states have (on average 1.2011682242990653) internal successors, (5141), 4280 states have internal predecessors, (5141), 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 00:22:22,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4281 states to 4281 states and 5141 transitions. [2022-01-10 00:22:22,624 INFO L78 Accepts]: Start accepts. Automaton has 4281 states and 5141 transitions. Word has length 261 [2022-01-10 00:22:22,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:22:22,625 INFO L470 AbstractCegarLoop]: Abstraction has 4281 states and 5141 transitions. [2022-01-10 00:22:22,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 65.25) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:22:22,626 INFO L276 IsEmpty]: Start isEmpty. Operand 4281 states and 5141 transitions. [2022-01-10 00:22:22,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2022-01-10 00:22:22,630 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:22:22,631 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:22:22,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 00:22:22,631 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:22:22,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:22:22,632 INFO L85 PathProgramCache]: Analyzing trace with hash 506567335, now seen corresponding path program 1 times [2022-01-10 00:22:22,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:22:22,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231121160] [2022-01-10 00:22:22,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:22:22,637 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:22:22,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:22:22,888 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:22:22,889 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:22:22,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231121160] [2022-01-10 00:22:22,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231121160] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:22:22,889 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:22:22,889 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 00:22:22,889 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506360002] [2022-01-10 00:22:22,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:22:22,890 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 00:22:22,890 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:22:22,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 00:22:22,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-01-10 00:22:22,891 INFO L87 Difference]: Start difference. First operand 4281 states and 5141 transitions. Second operand has 7 states, 7 states have (on average 49.714285714285715) internal successors, (348), 6 states have internal predecessors, (348), 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 00:22:24,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:22:24,453 INFO L93 Difference]: Finished difference Result 8090 states and 9792 transitions. [2022-01-10 00:22:24,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 00:22:24,454 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 49.714285714285715) internal successors, (348), 6 states have internal predecessors, (348), 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 348 [2022-01-10 00:22:24,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:22:24,469 INFO L225 Difference]: With dead ends: 8090 [2022-01-10 00:22:24,469 INFO L226 Difference]: Without dead ends: 3952 [2022-01-10 00:22:24,474 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-01-10 00:22:24,475 INFO L933 BasicCegarLoop]: 263 mSDtfsCounter, 392 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 1526 mSolverCounterSat, 485 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 392 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 2011 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 485 IncrementalHoareTripleChecker+Valid, 1526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-10 00:22:24,475 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [392 Valid, 286 Invalid, 2011 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [485 Valid, 1526 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-10 00:22:24,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3952 states. [2022-01-10 00:22:24,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3952 to 3952. [2022-01-10 00:22:24,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3952 states, 3951 states have (on average 1.0802328524424196) internal successors, (4268), 3951 states have internal predecessors, (4268), 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 00:22:24,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3952 states to 3952 states and 4268 transitions. [2022-01-10 00:22:24,538 INFO L78 Accepts]: Start accepts. Automaton has 3952 states and 4268 transitions. Word has length 348 [2022-01-10 00:22:24,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:22:24,539 INFO L470 AbstractCegarLoop]: Abstraction has 3952 states and 4268 transitions. [2022-01-10 00:22:24,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 49.714285714285715) internal successors, (348), 6 states have internal predecessors, (348), 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 00:22:24,539 INFO L276 IsEmpty]: Start isEmpty. Operand 3952 states and 4268 transitions. [2022-01-10 00:22:24,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2022-01-10 00:22:24,543 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:22:24,543 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:22:24,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 00:22:24,544 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:22:24,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:22:24,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1776511055, now seen corresponding path program 1 times [2022-01-10 00:22:24,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:22:24,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546939344] [2022-01-10 00:22:24,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:22:24,544 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:22:24,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:22:24,691 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-01-10 00:22:24,691 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:22:24,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546939344] [2022-01-10 00:22:24,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546939344] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:22:24,691 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:22:24,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:22:24,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068662290] [2022-01-10 00:22:24,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:22:24,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:22:24,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:22:24,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:22:24,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:22:24,693 INFO L87 Difference]: Start difference. First operand 3952 states and 4268 transitions. Second operand has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:22:25,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:22:25,482 INFO L93 Difference]: Finished difference Result 9218 states and 10060 transitions. [2022-01-10 00:22:25,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:22:25,482 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 355 [2022-01-10 00:22:25,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:22:25,498 INFO L225 Difference]: With dead ends: 9218 [2022-01-10 00:22:25,498 INFO L226 Difference]: Without dead ends: 5597 [2022-01-10 00:22:25,503 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 00:22:25,503 INFO L933 BasicCegarLoop]: 400 mSDtfsCounter, 319 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 759 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 883 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 759 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-10 00:22:25,504 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [319 Valid, 406 Invalid, 883 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 759 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-10 00:22:25,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5597 states. [2022-01-10 00:22:25,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5597 to 5597. [2022-01-10 00:22:25,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5597 states, 5596 states have (on average 1.0748749106504647) internal successors, (6015), 5596 states have internal predecessors, (6015), 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 00:22:25,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5597 states to 5597 states and 6015 transitions. [2022-01-10 00:22:25,586 INFO L78 Accepts]: Start accepts. Automaton has 5597 states and 6015 transitions. Word has length 355 [2022-01-10 00:22:25,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:22:25,587 INFO L470 AbstractCegarLoop]: Abstraction has 5597 states and 6015 transitions. [2022-01-10 00:22:25,587 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:22:25,587 INFO L276 IsEmpty]: Start isEmpty. Operand 5597 states and 6015 transitions. [2022-01-10 00:22:25,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2022-01-10 00:22:25,593 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:22:25,593 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:22:25,593 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 00:22:25,593 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:22:25,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:22:25,594 INFO L85 PathProgramCache]: Analyzing trace with hash 1589778288, now seen corresponding path program 1 times [2022-01-10 00:22:25,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:22:25,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765949329] [2022-01-10 00:22:25,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:22:25,594 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:22:25,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:22:25,762 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 185 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:22:25,762 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:22:25,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765949329] [2022-01-10 00:22:25,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765949329] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:22:25,763 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:22:25,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:22:25,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970297001] [2022-01-10 00:22:25,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:22:25,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:22:25,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:22:25,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:22:25,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:22:25,765 INFO L87 Difference]: Start difference. First operand 5597 states and 6015 transitions. Second operand has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 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 00:22:26,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:22:26,517 INFO L93 Difference]: Finished difference Result 10863 states and 11697 transitions. [2022-01-10 00:22:26,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:22:26,517 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 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 410 [2022-01-10 00:22:26,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:22:26,559 INFO L225 Difference]: With dead ends: 10863 [2022-01-10 00:22:26,559 INFO L226 Difference]: Without dead ends: 5597 [2022-01-10 00:22:26,563 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 00:22:26,564 INFO L933 BasicCegarLoop]: 412 mSDtfsCounter, 178 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 767 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-10 00:22:26,564 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [178 Valid, 417 Invalid, 855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 767 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-10 00:22:26,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5597 states. [2022-01-10 00:22:26,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5597 to 5597. [2022-01-10 00:22:26,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5597 states, 5596 states have (on average 1.0491422444603289) internal successors, (5871), 5596 states have internal predecessors, (5871), 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 00:22:26,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5597 states to 5597 states and 5871 transitions. [2022-01-10 00:22:26,634 INFO L78 Accepts]: Start accepts. Automaton has 5597 states and 5871 transitions. Word has length 410 [2022-01-10 00:22:26,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:22:26,635 INFO L470 AbstractCegarLoop]: Abstraction has 5597 states and 5871 transitions. [2022-01-10 00:22:26,635 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 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 00:22:26,635 INFO L276 IsEmpty]: Start isEmpty. Operand 5597 states and 5871 transitions. [2022-01-10 00:22:26,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 495 [2022-01-10 00:22:26,643 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:22:26,644 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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] [2022-01-10 00:22:26,644 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 00:22:26,644 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:22:26,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:22:26,644 INFO L85 PathProgramCache]: Analyzing trace with hash -1166363706, now seen corresponding path program 1 times [2022-01-10 00:22:26,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:22:26,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590323863] [2022-01-10 00:22:26,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:22:26,645 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:22:26,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:22:26,851 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 261 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:22:26,851 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:22:26,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590323863] [2022-01-10 00:22:26,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590323863] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:22:26,852 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:22:26,852 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:22:26,852 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627161632] [2022-01-10 00:22:26,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:22:26,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 00:22:26,853 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:22:26,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 00:22:26,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 00:22:26,854 INFO L87 Difference]: Start difference. First operand 5597 states and 5871 transitions. Second operand has 4 states, 4 states have (on average 123.5) internal successors, (494), 3 states have internal predecessors, (494), 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 00:22:28,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:22:28,340 INFO L93 Difference]: Finished difference Result 16456 states and 17283 transitions. [2022-01-10 00:22:28,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 00:22:28,341 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 123.5) internal successors, (494), 3 states have internal predecessors, (494), 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 494 [2022-01-10 00:22:28,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:22:28,370 INFO L225 Difference]: With dead ends: 16456 [2022-01-10 00:22:28,370 INFO L226 Difference]: Without dead ends: 11190 [2022-01-10 00:22:28,375 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 00:22:28,377 INFO L933 BasicCegarLoop]: 89 mSDtfsCounter, 186 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 1740 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 1828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1740 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-10 00:22:28,377 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [186 Valid, 98 Invalid, 1828 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1740 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-10 00:22:28,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11190 states. [2022-01-10 00:22:28,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11190 to 9216. [2022-01-10 00:22:28,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9216 states, 9215 states have (on average 1.0493760173629951) internal successors, (9670), 9215 states have internal predecessors, (9670), 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 00:22:28,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9216 states to 9216 states and 9670 transitions. [2022-01-10 00:22:28,520 INFO L78 Accepts]: Start accepts. Automaton has 9216 states and 9670 transitions. Word has length 494 [2022-01-10 00:22:28,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:22:28,521 INFO L470 AbstractCegarLoop]: Abstraction has 9216 states and 9670 transitions. [2022-01-10 00:22:28,521 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 123.5) internal successors, (494), 3 states have internal predecessors, (494), 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 00:22:28,521 INFO L276 IsEmpty]: Start isEmpty. Operand 9216 states and 9670 transitions. [2022-01-10 00:22:28,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 515 [2022-01-10 00:22:28,525 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:22:28,526 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:22:28,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 00:22:28,526 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:22:28,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:22:28,527 INFO L85 PathProgramCache]: Analyzing trace with hash -1835428368, now seen corresponding path program 1 times [2022-01-10 00:22:28,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:22:28,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153905763] [2022-01-10 00:22:28,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:22:28,527 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:22:28,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:22:28,709 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 295 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-01-10 00:22:28,709 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:22:28,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153905763] [2022-01-10 00:22:28,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153905763] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:22:28,709 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:22:28,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:22:28,710 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778279631] [2022-01-10 00:22:28,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:22:28,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:22:28,710 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:22:28,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:22:28,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:22:28,711 INFO L87 Difference]: Start difference. First operand 9216 states and 9670 transitions. Second operand has 3 states, 3 states have (on average 140.0) internal successors, (420), 3 states have internal predecessors, (420), 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 00:22:29,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:22:29,571 INFO L93 Difference]: Finished difference Result 21062 states and 22144 transitions. [2022-01-10 00:22:29,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:22:29,572 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 140.0) internal successors, (420), 3 states have internal predecessors, (420), 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 514 [2022-01-10 00:22:29,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:22:29,590 INFO L225 Difference]: With dead ends: 21062 [2022-01-10 00:22:29,591 INFO L226 Difference]: Without dead ends: 12177 [2022-01-10 00:22:29,598 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 00:22:29,598 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 190 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 769 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 769 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-10 00:22:29,599 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [190 Valid, 38 Invalid, 855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 769 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-10 00:22:29,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12177 states. [2022-01-10 00:22:29,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12177 to 11519. [2022-01-10 00:22:29,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11519 states, 11518 states have (on average 1.0467963188053482) internal successors, (12057), 11518 states have internal predecessors, (12057), 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 00:22:29,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11519 states to 11519 states and 12057 transitions. [2022-01-10 00:22:29,762 INFO L78 Accepts]: Start accepts. Automaton has 11519 states and 12057 transitions. Word has length 514 [2022-01-10 00:22:29,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:22:29,762 INFO L470 AbstractCegarLoop]: Abstraction has 11519 states and 12057 transitions. [2022-01-10 00:22:29,763 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.0) internal successors, (420), 3 states have internal predecessors, (420), 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 00:22:29,763 INFO L276 IsEmpty]: Start isEmpty. Operand 11519 states and 12057 transitions. [2022-01-10 00:22:29,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 569 [2022-01-10 00:22:29,767 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:22:29,768 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:22:29,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 00:22:29,768 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:22:29,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:22:29,769 INFO L85 PathProgramCache]: Analyzing trace with hash -1856985161, now seen corresponding path program 1 times [2022-01-10 00:22:29,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:22:29,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733559205] [2022-01-10 00:22:29,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:22:29,769 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:22:29,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:22:30,074 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 344 proven. 156 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-01-10 00:22:30,074 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:22:30,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733559205] [2022-01-10 00:22:30,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733559205] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 00:22:30,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [984528261] [2022-01-10 00:22:30,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:22:30,075 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 00:22:30,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 00:22:30,080 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 00:22:30,082 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 00:22:30,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:22:30,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 697 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 00:22:30,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 00:22:31,329 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 357 proven. 0 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2022-01-10 00:22:31,329 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 00:22:31,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [984528261] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:22:31,330 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 00:22:31,330 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2022-01-10 00:22:31,330 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423012613] [2022-01-10 00:22:31,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:22:31,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:22:31,332 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:22:31,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:22:31,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-01-10 00:22:31,333 INFO L87 Difference]: Start difference. First operand 11519 states and 12057 transitions. Second operand has 3 states, 3 states have (on average 137.33333333333334) internal successors, (412), 3 states have internal predecessors, (412), 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 00:22:32,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:22:32,135 INFO L93 Difference]: Finished difference Result 25668 states and 26946 transitions. [2022-01-10 00:22:32,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:22:32,135 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 137.33333333333334) internal successors, (412), 3 states have internal predecessors, (412), 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 568 [2022-01-10 00:22:32,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:22:32,164 INFO L225 Difference]: With dead ends: 25668 [2022-01-10 00:22:32,164 INFO L226 Difference]: Without dead ends: 14480 [2022-01-10 00:22:32,177 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 572 GetRequests, 567 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-01-10 00:22:32,178 INFO L933 BasicCegarLoop]: 436 mSDtfsCounter, 173 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 779 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 779 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-10 00:22:32,178 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [173 Valid, 442 Invalid, 825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 779 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-10 00:22:32,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14480 states. [2022-01-10 00:22:32,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14480 to 13822. [2022-01-10 00:22:32,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13822 states, 13821 states have (on average 1.0451486867809854) internal successors, (14445), 13821 states have internal predecessors, (14445), 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 00:22:32,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13822 states to 13822 states and 14445 transitions. [2022-01-10 00:22:32,350 INFO L78 Accepts]: Start accepts. Automaton has 13822 states and 14445 transitions. Word has length 568 [2022-01-10 00:22:32,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:22:32,351 INFO L470 AbstractCegarLoop]: Abstraction has 13822 states and 14445 transitions. [2022-01-10 00:22:32,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 137.33333333333334) internal successors, (412), 3 states have internal predecessors, (412), 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 00:22:32,351 INFO L276 IsEmpty]: Start isEmpty. Operand 13822 states and 14445 transitions. [2022-01-10 00:22:32,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 630 [2022-01-10 00:22:32,357 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:22:32,358 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 00:22:32,388 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 00:22:32,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-01-10 00:22:32,572 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:22:32,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:22:32,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1055686267, now seen corresponding path program 1 times [2022-01-10 00:22:32,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:22:32,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385363545] [2022-01-10 00:22:32,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:22:32,572 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:22:32,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:22:32,835 INFO L134 CoverageAnalysis]: Checked inductivity of 576 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 535 trivial. 0 not checked. [2022-01-10 00:22:32,836 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:22:32,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385363545] [2022-01-10 00:22:32,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385363545] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:22:32,836 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:22:32,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:22:32,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777851507] [2022-01-10 00:22:32,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:22:32,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:22:32,838 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:22:32,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:22:32,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:22:32,838 INFO L87 Difference]: Start difference. First operand 13822 states and 14445 transitions. Second operand has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 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 00:22:33,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:22:33,618 INFO L93 Difference]: Finished difference Result 27313 states and 28557 transitions. [2022-01-10 00:22:33,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:22:33,619 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 629 [2022-01-10 00:22:33,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:22:33,642 INFO L225 Difference]: With dead ends: 27313 [2022-01-10 00:22:33,642 INFO L226 Difference]: Without dead ends: 13822 [2022-01-10 00:22:33,656 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 00:22:33,657 INFO L933 BasicCegarLoop]: 421 mSDtfsCounter, 331 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 744 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 744 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-10 00:22:33,657 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [331 Valid, 427 Invalid, 774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 744 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-10 00:22:33,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13822 states. [2022-01-10 00:22:33,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13822 to 12835. [2022-01-10 00:22:33,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12835 states, 12834 states have (on average 1.0424653264765467) internal successors, (13379), 12834 states have internal predecessors, (13379), 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 00:22:33,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12835 states to 12835 states and 13379 transitions. [2022-01-10 00:22:33,827 INFO L78 Accepts]: Start accepts. Automaton has 12835 states and 13379 transitions. Word has length 629 [2022-01-10 00:22:33,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:22:33,828 INFO L470 AbstractCegarLoop]: Abstraction has 12835 states and 13379 transitions. [2022-01-10 00:22:33,828 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 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 00:22:33,828 INFO L276 IsEmpty]: Start isEmpty. Operand 12835 states and 13379 transitions. [2022-01-10 00:22:33,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 828 [2022-01-10 00:22:33,840 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:22:33,840 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:22:33,840 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 00:22:33,840 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:22:33,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:22:33,841 INFO L85 PathProgramCache]: Analyzing trace with hash -1860868068, now seen corresponding path program 1 times [2022-01-10 00:22:33,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:22:33,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059568395] [2022-01-10 00:22:33,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:22:33,841 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:22:33,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:22:34,241 INFO L134 CoverageAnalysis]: Checked inductivity of 978 backedges. 42 proven. 561 refuted. 0 times theorem prover too weak. 375 trivial. 0 not checked. [2022-01-10 00:22:34,242 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:22:34,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059568395] [2022-01-10 00:22:34,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059568395] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 00:22:34,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1635104673] [2022-01-10 00:22:34,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:22:34,242 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 00:22:34,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 00:22:34,244 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 00:22:34,280 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 00:22:34,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:22:34,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 978 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 00:22:34,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 00:22:35,539 INFO L134 CoverageAnalysis]: Checked inductivity of 978 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 923 trivial. 0 not checked. [2022-01-10 00:22:35,539 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 00:22:35,540 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1635104673] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:22:35,540 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 00:22:35,540 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-01-10 00:22:35,540 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042123143] [2022-01-10 00:22:35,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:22:35,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:22:35,541 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:22:35,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:22:35,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-10 00:22:35,542 INFO L87 Difference]: Start difference. First operand 12835 states and 13379 transitions. Second operand has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:22:36,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:22:36,329 INFO L93 Difference]: Finished difference Result 25339 states and 26425 transitions. [2022-01-10 00:22:36,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:22:36,330 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 827 [2022-01-10 00:22:36,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:22:36,346 INFO L225 Difference]: With dead ends: 25339 [2022-01-10 00:22:36,346 INFO L226 Difference]: Without dead ends: 12835 [2022-01-10 00:22:36,356 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 831 GetRequests, 827 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-10 00:22:36,359 INFO L933 BasicCegarLoop]: 371 mSDtfsCounter, 351 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 786 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 786 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-10 00:22:36,359 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [351 Valid, 377 Invalid, 804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 786 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-10 00:22:36,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12835 states. [2022-01-10 00:22:36,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12835 to 12835. [2022-01-10 00:22:36,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12835 states, 12834 states have (on average 1.0363098020882031) internal successors, (13300), 12834 states have internal predecessors, (13300), 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 00:22:36,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12835 states to 12835 states and 13300 transitions. [2022-01-10 00:22:36,537 INFO L78 Accepts]: Start accepts. Automaton has 12835 states and 13300 transitions. Word has length 827 [2022-01-10 00:22:36,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:22:36,537 INFO L470 AbstractCegarLoop]: Abstraction has 12835 states and 13300 transitions. [2022-01-10 00:22:36,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:22:36,538 INFO L276 IsEmpty]: Start isEmpty. Operand 12835 states and 13300 transitions. [2022-01-10 00:22:36,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 845 [2022-01-10 00:22:36,552 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:22:36,553 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:22:36,583 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-10 00:22:36,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-01-10 00:22:36,778 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:22:36,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:22:36,779 INFO L85 PathProgramCache]: Analyzing trace with hash -1506735645, now seen corresponding path program 1 times [2022-01-10 00:22:36,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:22:36,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804820540] [2022-01-10 00:22:36,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:22:36,779 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:22:36,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:22:37,092 INFO L134 CoverageAnalysis]: Checked inductivity of 987 backedges. 258 proven. 0 refuted. 0 times theorem prover too weak. 729 trivial. 0 not checked. [2022-01-10 00:22:37,093 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:22:37,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804820540] [2022-01-10 00:22:37,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804820540] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:22:37,093 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:22:37,093 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:22:37,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791490375] [2022-01-10 00:22:37,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:22:37,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:22:37,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:22:37,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:22:37,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:22:37,096 INFO L87 Difference]: Start difference. First operand 12835 states and 13300 transitions. Second operand has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 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 00:22:38,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:22:38,027 INFO L93 Difference]: Finished difference Result 30274 states and 31426 transitions. [2022-01-10 00:22:38,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:22:38,027 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 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 844 [2022-01-10 00:22:38,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:22:38,045 INFO L225 Difference]: With dead ends: 30274 [2022-01-10 00:22:38,045 INFO L226 Difference]: Without dead ends: 16125 [2022-01-10 00:22:38,052 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 00:22:38,053 INFO L933 BasicCegarLoop]: 424 mSDtfsCounter, 269 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 747 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-10 00:22:38,053 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [269 Valid, 430 Invalid, 835 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 747 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-10 00:22:38,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16125 states. [2022-01-10 00:22:38,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16125 to 15796. [2022-01-10 00:22:38,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15796 states, 15795 states have (on average 1.0291231402342513) internal successors, (16255), 15795 states have internal predecessors, (16255), 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 00:22:38,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15796 states to 15796 states and 16255 transitions. [2022-01-10 00:22:38,243 INFO L78 Accepts]: Start accepts. Automaton has 15796 states and 16255 transitions. Word has length 844 [2022-01-10 00:22:38,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:22:38,243 INFO L470 AbstractCegarLoop]: Abstraction has 15796 states and 16255 transitions. [2022-01-10 00:22:38,243 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 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 00:22:38,243 INFO L276 IsEmpty]: Start isEmpty. Operand 15796 states and 16255 transitions. [2022-01-10 00:22:38,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1101 [2022-01-10 00:22:38,265 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:22:38,265 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:22:38,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 00:22:38,266 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:22:38,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:22:38,266 INFO L85 PathProgramCache]: Analyzing trace with hash -201519572, now seen corresponding path program 1 times [2022-01-10 00:22:38,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:22:38,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906655938] [2022-01-10 00:22:38,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:22:38,267 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:22:38,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:22:38,621 INFO L134 CoverageAnalysis]: Checked inductivity of 2309 backedges. 1654 proven. 0 refuted. 0 times theorem prover too weak. 655 trivial. 0 not checked. [2022-01-10 00:22:38,621 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:22:38,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906655938] [2022-01-10 00:22:38,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906655938] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:22:38,621 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:22:38,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:22:38,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643929179] [2022-01-10 00:22:38,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:22:38,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:22:38,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:22:38,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:22:38,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:22:38,623 INFO L87 Difference]: Start difference. First operand 15796 states and 16255 transitions. Second operand has 3 states, 3 states have (on average 203.33333333333334) internal successors, (610), 3 states have internal predecessors, (610), 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 00:22:39,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:22:39,367 INFO L93 Difference]: Finished difference Result 31261 states and 32177 transitions. [2022-01-10 00:22:39,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:22:39,367 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 203.33333333333334) internal successors, (610), 3 states have internal predecessors, (610), 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 1100 [2022-01-10 00:22:39,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:22:39,388 INFO L225 Difference]: With dead ends: 31261 [2022-01-10 00:22:39,388 INFO L226 Difference]: Without dead ends: 15796 [2022-01-10 00:22:39,400 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 00:22:39,402 INFO L933 BasicCegarLoop]: 423 mSDtfsCounter, 220 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 751 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 751 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-10 00:22:39,402 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [220 Valid, 429 Invalid, 800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 751 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-10 00:22:39,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15796 states. [2022-01-10 00:22:39,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15796 to 14480. [2022-01-10 00:22:39,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14480 states, 14479 states have (on average 1.0232750880585675) internal successors, (14816), 14479 states have internal predecessors, (14816), 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 00:22:39,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14480 states to 14480 states and 14816 transitions. [2022-01-10 00:22:39,568 INFO L78 Accepts]: Start accepts. Automaton has 14480 states and 14816 transitions. Word has length 1100 [2022-01-10 00:22:39,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:22:39,569 INFO L470 AbstractCegarLoop]: Abstraction has 14480 states and 14816 transitions. [2022-01-10 00:22:39,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 203.33333333333334) internal successors, (610), 3 states have internal predecessors, (610), 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 00:22:39,569 INFO L276 IsEmpty]: Start isEmpty. Operand 14480 states and 14816 transitions. [2022-01-10 00:22:39,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1102 [2022-01-10 00:22:39,591 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:22:39,591 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:22:39,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 00:22:39,592 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:22:39,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:22:39,592 INFO L85 PathProgramCache]: Analyzing trace with hash -398407459, now seen corresponding path program 1 times [2022-01-10 00:22:39,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:22:39,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364902617] [2022-01-10 00:22:39,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:22:39,593 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:22:39,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:22:40,050 INFO L134 CoverageAnalysis]: Checked inductivity of 2315 backedges. 502 proven. 0 refuted. 0 times theorem prover too weak. 1813 trivial. 0 not checked. [2022-01-10 00:22:40,050 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:22:40,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364902617] [2022-01-10 00:22:40,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364902617] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:22:40,050 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:22:40,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:22:40,051 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985848595] [2022-01-10 00:22:40,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:22:40,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:22:40,052 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:22:40,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:22:40,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:22:40,052 INFO L87 Difference]: Start difference. First operand 14480 states and 14816 transitions. Second operand has 3 states, 3 states have (on average 112.0) internal successors, (336), 3 states have internal predecessors, (336), 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 00:22:40,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:22:40,804 INFO L93 Difference]: Finished difference Result 31919 states and 32699 transitions. [2022-01-10 00:22:40,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:22:40,804 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 112.0) internal successors, (336), 3 states have internal predecessors, (336), 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 1101 [2022-01-10 00:22:40,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:22:40,819 INFO L225 Difference]: With dead ends: 31919 [2022-01-10 00:22:40,819 INFO L226 Difference]: Without dead ends: 15467 [2022-01-10 00:22:40,829 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 00:22:40,830 INFO L933 BasicCegarLoop]: 406 mSDtfsCounter, 273 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 756 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 817 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 756 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-10 00:22:40,830 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [273 Valid, 412 Invalid, 817 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 756 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-10 00:22:40,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15467 states. [2022-01-10 00:22:40,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15467 to 12835. [2022-01-10 00:22:40,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12835 states, 12834 states have (on average 1.0201807698301386) internal successors, (13093), 12834 states have internal predecessors, (13093), 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 00:22:40,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12835 states to 12835 states and 13093 transitions. [2022-01-10 00:22:40,967 INFO L78 Accepts]: Start accepts. Automaton has 12835 states and 13093 transitions. Word has length 1101 [2022-01-10 00:22:40,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:22:40,968 INFO L470 AbstractCegarLoop]: Abstraction has 12835 states and 13093 transitions. [2022-01-10 00:22:40,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.0) internal successors, (336), 3 states have internal predecessors, (336), 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 00:22:40,968 INFO L276 IsEmpty]: Start isEmpty. Operand 12835 states and 13093 transitions. [2022-01-10 00:22:41,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1357 [2022-01-10 00:22:41,000 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:22:41,001 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:22:41,001 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 00:22:41,001 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:22:41,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:22:41,001 INFO L85 PathProgramCache]: Analyzing trace with hash -630961702, now seen corresponding path program 1 times [2022-01-10 00:22:41,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:22:41,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974307626] [2022-01-10 00:22:41,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:22:41,002 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:22:41,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:22:41,493 INFO L134 CoverageAnalysis]: Checked inductivity of 3790 backedges. 2299 proven. 0 refuted. 0 times theorem prover too weak. 1491 trivial. 0 not checked. [2022-01-10 00:22:41,493 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:22:41,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974307626] [2022-01-10 00:22:41,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974307626] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:22:41,493 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:22:41,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:22:41,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371200816] [2022-01-10 00:22:41,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:22:41,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:22:41,496 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:22:41,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:22:41,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:22:41,496 INFO L87 Difference]: Start difference. First operand 12835 states and 13093 transitions. Second operand has 3 states, 3 states have (on average 190.33333333333334) internal successors, (571), 3 states have internal predecessors, (571), 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 00:22:42,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:22:42,293 INFO L93 Difference]: Finished difference Result 25997 states and 26519 transitions. [2022-01-10 00:22:42,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:22:42,293 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 190.33333333333334) internal successors, (571), 3 states have internal predecessors, (571), 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 1356 [2022-01-10 00:22:42,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:22:42,306 INFO L225 Difference]: With dead ends: 25997 [2022-01-10 00:22:42,306 INFO L226 Difference]: Without dead ends: 13493 [2022-01-10 00:22:42,314 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 00:22:42,317 INFO L933 BasicCegarLoop]: 424 mSDtfsCounter, 224 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 747 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-10 00:22:42,318 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [224 Valid, 430 Invalid, 752 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 747 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-10 00:22:42,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13493 states. [2022-01-10 00:22:42,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13493 to 13493. [2022-01-10 00:22:42,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13493 states, 13492 states have (on average 1.0194930329083902) internal successors, (13755), 13492 states have internal predecessors, (13755), 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 00:22:42,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13493 states to 13493 states and 13755 transitions. [2022-01-10 00:22:42,455 INFO L78 Accepts]: Start accepts. Automaton has 13493 states and 13755 transitions. Word has length 1356 [2022-01-10 00:22:42,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:22:42,455 INFO L470 AbstractCegarLoop]: Abstraction has 13493 states and 13755 transitions. [2022-01-10 00:22:42,456 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 190.33333333333334) internal successors, (571), 3 states have internal predecessors, (571), 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 00:22:42,456 INFO L276 IsEmpty]: Start isEmpty. Operand 13493 states and 13755 transitions. [2022-01-10 00:22:42,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1395 [2022-01-10 00:22:42,480 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:22:42,481 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:22:42,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 00:22:42,481 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:22:42,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:22:42,482 INFO L85 PathProgramCache]: Analyzing trace with hash 2131087934, now seen corresponding path program 1 times [2022-01-10 00:22:42,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:22:42,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021152770] [2022-01-10 00:22:42,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:22:42,482 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:22:42,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:22:42,963 INFO L134 CoverageAnalysis]: Checked inductivity of 3551 backedges. 2549 proven. 0 refuted. 0 times theorem prover too weak. 1002 trivial. 0 not checked. [2022-01-10 00:22:42,963 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:22:42,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021152770] [2022-01-10 00:22:42,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021152770] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:22:42,963 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:22:42,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 00:22:42,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087642543] [2022-01-10 00:22:42,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:22:42,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 00:22:42,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:22:42,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 00:22:42,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-10 00:22:42,965 INFO L87 Difference]: Start difference. First operand 13493 states and 13755 transitions. Second operand has 6 states, 6 states have (on average 122.33333333333333) internal successors, (734), 6 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 00:22:44,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:22:44,190 INFO L93 Difference]: Finished difference Result 26758 states and 27280 transitions. [2022-01-10 00:22:44,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 00:22:44,191 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 122.33333333333333) internal successors, (734), 6 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 1394 [2022-01-10 00:22:44,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:22:44,207 INFO L225 Difference]: With dead ends: 26758 [2022-01-10 00:22:44,207 INFO L226 Difference]: Without dead ends: 13596 [2022-01-10 00:22:44,216 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-10 00:22:44,217 INFO L933 BasicCegarLoop]: 425 mSDtfsCounter, 319 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 2098 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 569 SdHoareTripleChecker+Invalid, 2169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 2098 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-10 00:22:44,217 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [319 Valid, 569 Invalid, 2169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 2098 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-10 00:22:44,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13596 states. [2022-01-10 00:22:44,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13596 to 13493. [2022-01-10 00:22:44,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13493 states, 13492 states have (on average 1.0191965609249927) internal successors, (13751), 13492 states have internal predecessors, (13751), 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 00:22:44,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13493 states to 13493 states and 13751 transitions. [2022-01-10 00:22:44,354 INFO L78 Accepts]: Start accepts. Automaton has 13493 states and 13751 transitions. Word has length 1394 [2022-01-10 00:22:44,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:22:44,355 INFO L470 AbstractCegarLoop]: Abstraction has 13493 states and 13751 transitions. [2022-01-10 00:22:44,355 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 122.33333333333333) internal successors, (734), 6 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 00:22:44,355 INFO L276 IsEmpty]: Start isEmpty. Operand 13493 states and 13751 transitions. [2022-01-10 00:22:44,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1409 [2022-01-10 00:22:44,377 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:22:44,377 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:22:44,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 00:22:44,378 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:22:44,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:22:44,378 INFO L85 PathProgramCache]: Analyzing trace with hash -2061978553, now seen corresponding path program 1 times [2022-01-10 00:22:44,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:22:44,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427009404] [2022-01-10 00:22:44,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:22:44,379 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:22:44,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:22:44,883 INFO L134 CoverageAnalysis]: Checked inductivity of 3451 backedges. 2486 proven. 0 refuted. 0 times theorem prover too weak. 965 trivial. 0 not checked. [2022-01-10 00:22:44,883 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:22:44,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427009404] [2022-01-10 00:22:44,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427009404] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:22:44,883 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:22:44,883 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 00:22:44,884 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833841910] [2022-01-10 00:22:44,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:22:44,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 00:22:44,885 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:22:44,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 00:22:44,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 00:22:44,885 INFO L87 Difference]: Start difference. First operand 13493 states and 13751 transitions. Second operand has 5 states, 5 states have (on average 146.6) internal successors, (733), 5 states have internal predecessors, (733), 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 00:22:46,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:22:46,229 INFO L93 Difference]: Finished difference Result 27322 states and 27843 transitions. [2022-01-10 00:22:46,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 00:22:46,230 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 146.6) internal successors, (733), 5 states have internal predecessors, (733), 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 1408 [2022-01-10 00:22:46,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:22:46,245 INFO L225 Difference]: With dead ends: 27322 [2022-01-10 00:22:46,245 INFO L226 Difference]: Without dead ends: 14160 [2022-01-10 00:22:46,252 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-10 00:22:46,253 INFO L933 BasicCegarLoop]: 414 mSDtfsCounter, 600 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 2051 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 600 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 2097 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 2051 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-10 00:22:46,253 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [600 Valid, 434 Invalid, 2097 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 2051 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-10 00:22:46,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14160 states. [2022-01-10 00:22:46,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14160 to 13822. [2022-01-10 00:22:46,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13822 states, 13821 states have (on average 1.018450184501845) internal successors, (14076), 13821 states have internal predecessors, (14076), 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 00:22:46,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13822 states to 13822 states and 14076 transitions. [2022-01-10 00:22:46,406 INFO L78 Accepts]: Start accepts. Automaton has 13822 states and 14076 transitions. Word has length 1408 [2022-01-10 00:22:46,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:22:46,406 INFO L470 AbstractCegarLoop]: Abstraction has 13822 states and 14076 transitions. [2022-01-10 00:22:46,406 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 146.6) internal successors, (733), 5 states have internal predecessors, (733), 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 00:22:46,406 INFO L276 IsEmpty]: Start isEmpty. Operand 13822 states and 14076 transitions. [2022-01-10 00:22:46,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1411 [2022-01-10 00:22:46,424 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:22:46,424 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:22:46,424 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 00:22:46,424 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:22:46,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:22:46,425 INFO L85 PathProgramCache]: Analyzing trace with hash -635808705, now seen corresponding path program 1 times [2022-01-10 00:22:46,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:22:46,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327030431] [2022-01-10 00:22:46,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:22:46,425 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:22:46,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:22:46,901 INFO L134 CoverageAnalysis]: Checked inductivity of 3785 backedges. 2349 proven. 66 refuted. 0 times theorem prover too weak. 1370 trivial. 0 not checked. [2022-01-10 00:22:46,901 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:22:46,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327030431] [2022-01-10 00:22:46,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327030431] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 00:22:46,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1189055932] [2022-01-10 00:22:46,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:22:46,902 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 00:22:46,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 00:22:46,904 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 00:22:46,921 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-10 00:22:47,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:22:47,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 1658 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 00:22:47,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 00:22:52,131 INFO L134 CoverageAnalysis]: Checked inductivity of 3785 backedges. 1829 proven. 201 refuted. 0 times theorem prover too weak. 1755 trivial. 0 not checked. [2022-01-10 00:22:52,131 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 00:22:59,024 INFO L134 CoverageAnalysis]: Checked inductivity of 3785 backedges. 1829 proven. 201 refuted. 0 times theorem prover too weak. 1755 trivial. 0 not checked. [2022-01-10 00:22:59,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1189055932] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 00:22:59,024 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 00:22:59,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 8 [2022-01-10 00:22:59,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428082660] [2022-01-10 00:22:59,025 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 00:22:59,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 00:22:59,027 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:22:59,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 00:22:59,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-01-10 00:22:59,028 INFO L87 Difference]: Start difference. First operand 13822 states and 14076 transitions. Second operand has 9 states, 9 states have (on average 189.55555555555554) internal successors, (1706), 8 states have internal predecessors, (1706), 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)