/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/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/array-crafted/mapavg2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-31 19:17:24,025 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 19:17:24,026 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 19:17:24,045 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-31 19:17:24,079 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-31 19:17:24,080 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-31 19:17:24,081 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-31 19:17:24,081 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-31 19:17:24,081 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-31 19:17:24,082 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-31 19:17:24,083 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-31 19:17:24,084 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-31 19:17:24,085 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-31 19:17:24,088 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-31 19:17:24,090 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-31 19:17:24,092 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-31 19:17:24,097 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-31 19:17:24,105 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-31 19:17:24,105 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-31 19:17:24,106 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-31 19:17:24,106 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2022-01-31 19:17:24,115 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 19:17:24,115 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 19:17:24,116 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 19:17:24,116 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-31 19:17:24,117 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 19:17:24,117 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-31 19:17:24,117 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 19:17:24,117 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 19:17:24,117 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 19:17:24,117 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 19:17:24,118 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-31 19:17:24,118 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 19:17:24,118 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 19:17:24,118 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 19:17:24,118 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 19:17:24,118 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 19:17:24,118 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-31 19:17:24,118 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 19:17:24,118 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 19:17:24,118 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 19:17:24,118 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-01-31 19:17:24,119 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-31 19:17:24,119 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-01-31 19:17:24,119 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 19:17:24,303 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 19:17:24,323 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 19:17:24,325 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 19:17:24,325 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 19:17:24,326 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 19:17:24,326 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/mapavg2.i [2022-01-31 19:17:24,371 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41519b4e6/cfe1f046f753468b84746613ace398d9/FLAG5ca2df222 [2022-01-31 19:17:24,753 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 19:17:24,753 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-crafted/mapavg2.i [2022-01-31 19:17:24,760 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41519b4e6/cfe1f046f753468b84746613ace398d9/FLAG5ca2df222 [2022-01-31 19:17:24,773 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41519b4e6/cfe1f046f753468b84746613ace398d9 [2022-01-31 19:17:24,774 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 19:17:24,776 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-31 19:17:24,779 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 19:17:24,779 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 19:17:24,781 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 19:17:24,782 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 07:17:24" (1/1) ... [2022-01-31 19:17:24,782 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fa77178 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:17:24, skipping insertion in model container [2022-01-31 19:17:24,782 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 07:17:24" (1/1) ... [2022-01-31 19:17:24,787 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 19:17:24,800 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 19:17:24,970 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-crafted/mapavg2.i[1313,1326] [2022-01-31 19:17:24,975 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 19:17:24,980 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 19:17:25,005 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-crafted/mapavg2.i[1313,1326] [2022-01-31 19:17:25,010 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 19:17:25,018 INFO L208 MainTranslator]: Completed translation [2022-01-31 19:17:25,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:17:25 WrapperNode [2022-01-31 19:17:25,019 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 19:17:25,020 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 19:17:25,020 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 19:17:25,021 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 19:17:25,028 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:17:25" (1/1) ... [2022-01-31 19:17:25,028 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:17:25" (1/1) ... [2022-01-31 19:17:25,039 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:17:25" (1/1) ... [2022-01-31 19:17:25,039 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:17:25" (1/1) ... [2022-01-31 19:17:25,050 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:17:25" (1/1) ... [2022-01-31 19:17:25,054 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:17:25" (1/1) ... [2022-01-31 19:17:25,058 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:17:25" (1/1) ... [2022-01-31 19:17:25,059 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 19:17:25,060 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 19:17:25,060 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 19:17:25,060 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 19:17:25,062 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:17:25" (1/1) ... [2022-01-31 19:17:25,067 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 19:17:25,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 19:17:25,090 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) [2022-01-31 19:17:25,108 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 [2022-01-31 19:17:25,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 19:17:25,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 19:17:25,118 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 19:17:25,118 INFO L138 BoogieDeclarations]: Found implementation of procedure mapavg [2022-01-31 19:17:25,119 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 19:17:25,119 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 19:17:25,119 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 19:17:25,119 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-01-31 19:17:25,119 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-01-31 19:17:25,120 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 19:17:25,120 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 19:17:25,120 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-01-31 19:17:25,120 INFO L130 BoogieDeclarations]: Found specification of procedure mapavg [2022-01-31 19:17:25,120 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 19:17:25,121 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 19:17:25,121 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-31 19:17:25,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 19:17:25,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 19:17:25,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 19:17:25,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 19:17:25,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 19:17:25,188 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 19:17:25,189 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 19:17:25,371 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 19:17:25,374 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 19:17:25,375 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-01-31 19:17:25,385 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 07:17:25 BoogieIcfgContainer [2022-01-31 19:17:25,386 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 19:17:25,387 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 19:17:25,387 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 19:17:25,390 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 19:17:25,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 07:17:24" (1/3) ... [2022-01-31 19:17:25,390 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e94b2ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 07:17:25, skipping insertion in model container [2022-01-31 19:17:25,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:17:25" (2/3) ... [2022-01-31 19:17:25,391 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e94b2ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 07:17:25, skipping insertion in model container [2022-01-31 19:17:25,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 07:17:25" (3/3) ... [2022-01-31 19:17:25,391 INFO L111 eAbstractionObserver]: Analyzing ICFG mapavg2.i [2022-01-31 19:17:25,394 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-01-31 19:17:25,395 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 19:17:25,428 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 19:17:25,433 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=AcceleratedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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=JORDAN [2022-01-31 19:17:25,433 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 19:17:25,447 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 21 states have (on average 1.380952380952381) internal successors, (29), 22 states have internal predecessors, (29), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-01-31 19:17:25,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-01-31 19:17:25,457 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:17:25,457 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:17:25,458 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:17:25,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:17:25,461 INFO L85 PathProgramCache]: Analyzing trace with hash -1373981706, now seen corresponding path program 1 times [2022-01-31 19:17:25,466 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:17:25,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [678888393] [2022-01-31 19:17:25,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:17:25,476 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:17:25,512 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:17:25,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:25,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:17:25,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:25,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 19:17:25,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:25,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-01-31 19:17:25,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:25,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-01-31 19:17:25,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:25,659 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-01-31 19:17:25,660 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:17:25,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [678888393] [2022-01-31 19:17:25,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [678888393] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:17:25,661 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:17:25,661 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-31 19:17:25,662 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069727853] [2022-01-31 19:17:25,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:17:25,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-31 19:17:25,666 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:17:25,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-31 19:17:25,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-31 19:17:25,686 INFO L87 Difference]: Start difference. First operand has 31 states, 21 states have (on average 1.380952380952381) internal successors, (29), 22 states have internal predecessors, (29), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:17:25,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:17:25,717 INFO L93 Difference]: Finished difference Result 54 states and 71 transitions. [2022-01-31 19:17:25,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-31 19:17:25,718 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 32 [2022-01-31 19:17:25,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:17:25,722 INFO L225 Difference]: With dead ends: 54 [2022-01-31 19:17:25,722 INFO L226 Difference]: Without dead ends: 26 [2022-01-31 19:17:25,724 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-31 19:17:25,726 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 22 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 19:17:25,727 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 35 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 19:17:25,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-01-31 19:17:25,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-01-31 19:17:25,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:17:25,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2022-01-31 19:17:25,755 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 32 [2022-01-31 19:17:25,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:17:25,755 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2022-01-31 19:17:25,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:17:25,755 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2022-01-31 19:17:25,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-01-31 19:17:25,757 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:17:25,757 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:17:25,757 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 19:17:25,757 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:17:25,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:17:25,758 INFO L85 PathProgramCache]: Analyzing trace with hash -508796304, now seen corresponding path program 1 times [2022-01-31 19:17:25,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:17:25,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [701633406] [2022-01-31 19:17:25,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:17:25,760 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:17:25,764 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:17:25,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:25,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:17:25,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:25,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 19:17:25,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:25,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-01-31 19:17:25,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:25,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-01-31 19:17:25,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:25,886 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-01-31 19:17:25,886 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:17:25,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [701633406] [2022-01-31 19:17:25,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [701633406] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:17:25,887 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:17:25,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-31 19:17:25,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589619694] [2022-01-31 19:17:25,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:17:25,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-31 19:17:25,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:17:25,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-31 19:17:25,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-31 19:17:25,889 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:17:25,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:17:25,973 INFO L93 Difference]: Finished difference Result 48 states and 60 transitions. [2022-01-31 19:17:25,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-31 19:17:25,973 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 32 [2022-01-31 19:17:25,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:17:25,974 INFO L225 Difference]: With dead ends: 48 [2022-01-31 19:17:25,974 INFO L226 Difference]: Without dead ends: 30 [2022-01-31 19:17:25,978 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-31 19:17:25,979 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 23 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:17:25,980 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 35 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:17:25,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-01-31 19:17:25,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2022-01-31 19:17:25,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 20 states have (on average 1.15) internal successors, (23), 20 states have internal predecessors, (23), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:17:25,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2022-01-31 19:17:25,998 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 32 [2022-01-31 19:17:25,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:17:25,999 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2022-01-31 19:17:25,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:17:25,999 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2022-01-31 19:17:26,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-01-31 19:17:26,001 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:17:26,001 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:17:26,001 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-31 19:17:26,001 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:17:26,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:17:26,001 INFO L85 PathProgramCache]: Analyzing trace with hash -587035376, now seen corresponding path program 1 times [2022-01-31 19:17:26,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:17:26,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1501865230] [2022-01-31 19:17:26,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:17:26,014 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:17:26,015 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:17:26,015 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:17:26,016 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:17:26,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:26,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:17:26,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:26,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-31 19:17:26,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:26,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-01-31 19:17:26,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:26,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-01-31 19:17:26,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:26,131 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-01-31 19:17:26,131 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:17:26,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1501865230] [2022-01-31 19:17:26,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1501865230] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:17:26,131 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:17:26,132 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-31 19:17:26,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707024575] [2022-01-31 19:17:26,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:17:26,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-31 19:17:26,132 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:17:26,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-31 19:17:26,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-31 19:17:26,133 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:17:26,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:17:26,204 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2022-01-31 19:17:26,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-31 19:17:26,205 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 40 [2022-01-31 19:17:26,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:17:26,206 INFO L225 Difference]: With dead ends: 50 [2022-01-31 19:17:26,206 INFO L226 Difference]: Without dead ends: 31 [2022-01-31 19:17:26,207 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-31 19:17:26,211 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 23 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 19:17:26,212 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 37 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 19:17:26,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-01-31 19:17:26,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2022-01-31 19:17:26,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 22 states have internal predecessors, (25), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:17:26,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2022-01-31 19:17:26,217 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 40 [2022-01-31 19:17:26,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:17:26,218 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2022-01-31 19:17:26,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:17:26,218 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2022-01-31 19:17:26,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-01-31 19:17:26,219 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:17:26,219 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-31 19:17:26,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-31 19:17:26,219 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:17:26,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:17:26,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1001584754, now seen corresponding path program 2 times [2022-01-31 19:17:26,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:17:26,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [396222024] [2022-01-31 19:17:26,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:17:26,222 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:17:26,222 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:17:26,222 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:17:26,223 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:17:26,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:26,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:17:26,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:26,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-01-31 19:17:26,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:26,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 19:17:26,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:26,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-01-31 19:17:26,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:26,280 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-31 19:17:26,280 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:17:26,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [396222024] [2022-01-31 19:17:26,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [396222024] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:17:26,281 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:17:26,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-31 19:17:26,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689180920] [2022-01-31 19:17:26,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:17:26,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-31 19:17:26,282 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:17:26,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-31 19:17:26,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-31 19:17:26,282 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:17:26,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:17:26,338 INFO L93 Difference]: Finished difference Result 51 states and 61 transitions. [2022-01-31 19:17:26,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-31 19:17:26,338 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 42 [2022-01-31 19:17:26,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:17:26,339 INFO L225 Difference]: With dead ends: 51 [2022-01-31 19:17:26,339 INFO L226 Difference]: Without dead ends: 33 [2022-01-31 19:17:26,339 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-31 19:17:26,340 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 23 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 19:17:26,340 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 37 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 19:17:26,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-01-31 19:17:26,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2022-01-31 19:17:26,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 24 states have (on average 1.125) internal successors, (27), 24 states have internal predecessors, (27), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:17:26,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2022-01-31 19:17:26,344 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 42 [2022-01-31 19:17:26,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:17:26,345 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2022-01-31 19:17:26,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:17:26,345 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2022-01-31 19:17:26,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-01-31 19:17:26,345 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:17:26,345 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 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] [2022-01-31 19:17:26,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-31 19:17:26,346 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:17:26,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:17:26,346 INFO L85 PathProgramCache]: Analyzing trace with hash 149126576, now seen corresponding path program 3 times [2022-01-31 19:17:26,346 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:17:26,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [736218086] [2022-01-31 19:17:26,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:17:26,348 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:17:26,348 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:17:26,348 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:17:26,349 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:17:26,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:26,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:17:26,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:26,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-01-31 19:17:26,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:26,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-01-31 19:17:26,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:26,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:17:26,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:26,394 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:17:26,394 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:17:26,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [736218086] [2022-01-31 19:17:26,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [736218086] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:17:26,394 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:17:26,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-31 19:17:26,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955753790] [2022-01-31 19:17:26,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:17:26,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-31 19:17:26,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:17:26,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-31 19:17:26,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-31 19:17:26,395 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:17:26,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:17:26,431 INFO L93 Difference]: Finished difference Result 49 states and 54 transitions. [2022-01-31 19:17:26,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-31 19:17:26,431 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 48 [2022-01-31 19:17:26,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:17:26,432 INFO L225 Difference]: With dead ends: 49 [2022-01-31 19:17:26,432 INFO L226 Difference]: Without dead ends: 34 [2022-01-31 19:17:26,432 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-31 19:17:26,432 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 21 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 19:17:26,433 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 32 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 19:17:26,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-01-31 19:17:26,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2022-01-31 19:17:26,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 25 states have (on average 1.12) internal successors, (28), 25 states have internal predecessors, (28), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:17:26,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2022-01-31 19:17:26,436 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 48 [2022-01-31 19:17:26,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:17:26,437 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2022-01-31 19:17:26,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:17:26,437 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2022-01-31 19:17:26,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-01-31 19:17:26,438 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:17:26,438 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 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] [2022-01-31 19:17:26,438 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-31 19:17:26,438 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:17:26,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:17:26,438 INFO L85 PathProgramCache]: Analyzing trace with hash -168552914, now seen corresponding path program 1 times [2022-01-31 19:17:26,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:17:26,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1531590559] [2022-01-31 19:17:26,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:17:26,440 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:17:26,440 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:17:26,440 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:17:26,441 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:17:26,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:26,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:17:26,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:26,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-01-31 19:17:26,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:26,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-01-31 19:17:26,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:26,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-01-31 19:17:26,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:26,488 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:17:26,489 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:17:26,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1531590559] [2022-01-31 19:17:26,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1531590559] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:17:26,489 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:17:26,489 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-31 19:17:26,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195113345] [2022-01-31 19:17:26,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:17:26,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-31 19:17:26,490 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:17:26,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-31 19:17:26,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-31 19:17:26,490 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:17:26,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:17:26,535 INFO L93 Difference]: Finished difference Result 51 states and 56 transitions. [2022-01-31 19:17:26,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-31 19:17:26,536 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 50 [2022-01-31 19:17:26,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:17:26,536 INFO L225 Difference]: With dead ends: 51 [2022-01-31 19:17:26,536 INFO L226 Difference]: Without dead ends: 36 [2022-01-31 19:17:26,537 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-31 19:17:26,537 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 23 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 19:17:26,538 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 32 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 19:17:26,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-01-31 19:17:26,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2022-01-31 19:17:26,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 27 states have internal predecessors, (30), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:17:26,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2022-01-31 19:17:26,542 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 50 [2022-01-31 19:17:26,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:17:26,542 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2022-01-31 19:17:26,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:17:26,542 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2022-01-31 19:17:26,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-01-31 19:17:26,543 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:17:26,543 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:17:26,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-31 19:17:26,543 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:17:26,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:17:26,543 INFO L85 PathProgramCache]: Analyzing trace with hash -515864788, now seen corresponding path program 2 times [2022-01-31 19:17:26,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:17:26,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1158365976] [2022-01-31 19:17:26,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:17:26,545 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:17:26,546 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:17:26,546 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:17:26,547 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:17:26,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:26,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:17:26,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:26,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-01-31 19:17:26,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:26,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-01-31 19:17:26,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:26,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-31 19:17:26,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:26,633 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:17:26,633 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:17:26,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1158365976] [2022-01-31 19:17:26,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1158365976] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:17:26,634 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:17:26,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-31 19:17:26,634 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411816371] [2022-01-31 19:17:26,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:17:26,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-31 19:17:26,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:17:26,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-31 19:17:26,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-31 19:17:26,638 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 5 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:17:26,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:17:26,695 INFO L93 Difference]: Finished difference Result 62 states and 70 transitions. [2022-01-31 19:17:26,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-31 19:17:26,695 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 5 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 52 [2022-01-31 19:17:26,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:17:26,697 INFO L225 Difference]: With dead ends: 62 [2022-01-31 19:17:26,697 INFO L226 Difference]: Without dead ends: 38 [2022-01-31 19:17:26,697 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-01-31 19:17:26,698 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 25 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 19:17:26,698 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 32 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 19:17:26,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-01-31 19:17:26,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2022-01-31 19:17:26,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 29 states have (on average 1.103448275862069) internal successors, (32), 29 states have internal predecessors, (32), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:17:26,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2022-01-31 19:17:26,705 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 52 [2022-01-31 19:17:26,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:17:26,706 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2022-01-31 19:17:26,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 5 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:17:26,706 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2022-01-31 19:17:26,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-01-31 19:17:26,707 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:17:26,707 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 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] [2022-01-31 19:17:26,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-31 19:17:26,707 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:17:26,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:17:26,707 INFO L85 PathProgramCache]: Analyzing trace with hash -909054066, now seen corresponding path program 3 times [2022-01-31 19:17:26,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:17:26,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [37048065] [2022-01-31 19:17:26,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:17:26,711 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:17:26,711 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:17:26,711 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:17:26,712 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:17:26,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:26,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:17:26,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:26,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-01-31 19:17:26,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:26,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-01-31 19:17:26,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:26,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-01-31 19:17:26,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:26,811 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:17:26,811 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:17:26,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [37048065] [2022-01-31 19:17:26,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [37048065] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:17:26,812 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:17:26,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-31 19:17:26,812 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690773573] [2022-01-31 19:17:26,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:17:26,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-31 19:17:26,812 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:17:26,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-31 19:17:26,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-31 19:17:26,813 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:17:26,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:17:26,885 INFO L93 Difference]: Finished difference Result 64 states and 72 transitions. [2022-01-31 19:17:26,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-31 19:17:26,886 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 54 [2022-01-31 19:17:26,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:17:26,886 INFO L225 Difference]: With dead ends: 64 [2022-01-31 19:17:26,886 INFO L226 Difference]: Without dead ends: 40 [2022-01-31 19:17:26,887 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2022-01-31 19:17:26,887 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 27 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 19:17:26,887 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 42 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 19:17:26,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-01-31 19:17:26,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2022-01-31 19:17:26,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 31 states have (on average 1.096774193548387) internal successors, (34), 31 states have internal predecessors, (34), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:17:26,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2022-01-31 19:17:26,891 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 54 [2022-01-31 19:17:26,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:17:26,892 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2022-01-31 19:17:26,892 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:17:26,892 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2022-01-31 19:17:26,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-01-31 19:17:26,892 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:17:26,893 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 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] [2022-01-31 19:17:26,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-31 19:17:26,893 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:17:26,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:17:26,893 INFO L85 PathProgramCache]: Analyzing trace with hash -806828176, now seen corresponding path program 4 times [2022-01-31 19:17:26,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:17:26,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1594361036] [2022-01-31 19:17:26,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:17:26,895 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:17:26,895 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:17:26,895 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:17:26,896 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:17:26,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:26,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:17:26,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:26,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-31 19:17:26,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:26,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-01-31 19:17:26,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:26,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:17:26,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:26,954 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:17:26,954 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:17:26,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1594361036] [2022-01-31 19:17:26,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1594361036] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:17:26,954 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:17:26,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-31 19:17:26,955 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157596240] [2022-01-31 19:17:26,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:17:26,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-31 19:17:26,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:17:26,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-31 19:17:26,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-31 19:17:26,956 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:17:27,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:17:27,027 INFO L93 Difference]: Finished difference Result 66 states and 74 transitions. [2022-01-31 19:17:27,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-31 19:17:27,027 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 56 [2022-01-31 19:17:27,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:17:27,028 INFO L225 Difference]: With dead ends: 66 [2022-01-31 19:17:27,028 INFO L226 Difference]: Without dead ends: 42 [2022-01-31 19:17:27,028 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2022-01-31 19:17:27,029 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 29 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 19:17:27,029 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 37 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 19:17:27,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-01-31 19:17:27,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2022-01-31 19:17:27,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 33 states have (on average 1.0909090909090908) internal successors, (36), 33 states have internal predecessors, (36), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:17:27,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2022-01-31 19:17:27,033 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 56 [2022-01-31 19:17:27,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:17:27,033 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2022-01-31 19:17:27,034 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:17:27,034 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2022-01-31 19:17:27,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-01-31 19:17:27,034 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:17:27,034 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 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] [2022-01-31 19:17:27,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-31 19:17:27,035 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:17:27,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:17:27,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1351995694, now seen corresponding path program 5 times [2022-01-31 19:17:27,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:17:27,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [149487415] [2022-01-31 19:17:27,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:17:27,037 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:17:27,037 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:17:27,037 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:17:27,038 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:17:27,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:27,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:17:27,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:27,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 19:17:27,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:27,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-01-31 19:17:27,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:27,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-01-31 19:17:27,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:27,114 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:17:27,115 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:17:27,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [149487415] [2022-01-31 19:17:27,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [149487415] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:17:27,115 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:17:27,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-31 19:17:27,115 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746262506] [2022-01-31 19:17:27,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:17:27,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-31 19:17:27,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:17:27,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-31 19:17:27,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-01-31 19:17:27,116 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 8 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:17:27,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:17:27,191 INFO L93 Difference]: Finished difference Result 68 states and 76 transitions. [2022-01-31 19:17:27,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-31 19:17:27,191 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 8 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 58 [2022-01-31 19:17:27,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:17:27,192 INFO L225 Difference]: With dead ends: 68 [2022-01-31 19:17:27,192 INFO L226 Difference]: Without dead ends: 44 [2022-01-31 19:17:27,192 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2022-01-31 19:17:27,193 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 31 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 19:17:27,193 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 32 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 19:17:27,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-01-31 19:17:27,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2022-01-31 19:17:27,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 35 states have (on average 1.0857142857142856) internal successors, (38), 35 states have internal predecessors, (38), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:17:27,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2022-01-31 19:17:27,197 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 58 [2022-01-31 19:17:27,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:17:27,197 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2022-01-31 19:17:27,197 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 8 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:17:27,197 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2022-01-31 19:17:27,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-01-31 19:17:27,198 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:17:27,198 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 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] [2022-01-31 19:17:27,198 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-31 19:17:27,198 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:17:27,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:17:27,198 INFO L85 PathProgramCache]: Analyzing trace with hash -1271970380, now seen corresponding path program 6 times [2022-01-31 19:17:27,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:17:27,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1507915844] [2022-01-31 19:17:27,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:17:27,200 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:17:27,200 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:17:27,200 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:17:27,201 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:17:27,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:27,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:17:27,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:27,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:17:27,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:27,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 19:17:27,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:27,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-31 19:17:27,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:27,271 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:17:27,271 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:17:27,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1507915844] [2022-01-31 19:17:27,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1507915844] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:17:27,271 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:17:27,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-31 19:17:27,271 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805564232] [2022-01-31 19:17:27,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:17:27,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-31 19:17:27,272 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:17:27,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-31 19:17:27,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2022-01-31 19:17:27,272 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand has 10 states, 10 states have (on average 3.1) internal successors, (31), 9 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:17:27,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:17:27,374 INFO L93 Difference]: Finished difference Result 70 states and 78 transitions. [2022-01-31 19:17:27,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-31 19:17:27,374 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 9 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 60 [2022-01-31 19:17:27,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:17:27,375 INFO L225 Difference]: With dead ends: 70 [2022-01-31 19:17:27,375 INFO L226 Difference]: Without dead ends: 46 [2022-01-31 19:17:27,375 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2022-01-31 19:17:27,376 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 33 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:17:27,376 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 42 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:17:27,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-01-31 19:17:27,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2022-01-31 19:17:27,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 37 states have (on average 1.0810810810810811) internal successors, (40), 37 states have internal predecessors, (40), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:17:27,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2022-01-31 19:17:27,380 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 60 [2022-01-31 19:17:27,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:17:27,380 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2022-01-31 19:17:27,380 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 9 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:17:27,380 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2022-01-31 19:17:27,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-31 19:17:27,380 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:17:27,381 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 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] [2022-01-31 19:17:27,381 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-31 19:17:27,381 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:17:27,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:17:27,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1677054954, now seen corresponding path program 7 times [2022-01-31 19:17:27,381 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:17:27,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1245708142] [2022-01-31 19:17:27,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:17:27,383 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:17:27,383 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:17:27,383 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:17:27,384 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:17:27,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:27,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:17:27,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:27,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-31 19:17:27,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:27,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-01-31 19:17:27,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:27,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-01-31 19:17:27,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:27,484 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:17:27,484 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:17:27,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1245708142] [2022-01-31 19:17:27,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1245708142] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:17:27,485 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:17:27,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-31 19:17:27,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520402090] [2022-01-31 19:17:27,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:17:27,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-31 19:17:27,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:17:27,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-31 19:17:27,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2022-01-31 19:17:27,486 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand has 11 states, 11 states have (on average 3.0) internal successors, (33), 10 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:17:27,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:17:27,623 INFO L93 Difference]: Finished difference Result 72 states and 80 transitions. [2022-01-31 19:17:27,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-31 19:17:27,623 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 10 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 62 [2022-01-31 19:17:27,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:17:27,624 INFO L225 Difference]: With dead ends: 72 [2022-01-31 19:17:27,624 INFO L226 Difference]: Without dead ends: 48 [2022-01-31 19:17:27,624 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=135, Invalid=207, Unknown=0, NotChecked=0, Total=342 [2022-01-31 19:17:27,624 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 35 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:17:27,625 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 52 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:17:27,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-01-31 19:17:27,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2022-01-31 19:17:27,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 39 states have (on average 1.0769230769230769) internal successors, (42), 39 states have internal predecessors, (42), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:17:27,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2022-01-31 19:17:27,628 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 62 [2022-01-31 19:17:27,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:17:27,629 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2022-01-31 19:17:27,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 10 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:17:27,629 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2022-01-31 19:17:27,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-31 19:17:27,629 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:17:27,629 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 6, 6, 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] [2022-01-31 19:17:27,629 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-31 19:17:27,629 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:17:27,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:17:27,630 INFO L85 PathProgramCache]: Analyzing trace with hash -121306632, now seen corresponding path program 8 times [2022-01-31 19:17:27,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:17:27,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1725433985] [2022-01-31 19:17:27,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:17:27,631 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:17:27,631 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:17:27,632 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:17:27,632 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:17:27,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:27,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:17:27,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:27,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-01-31 19:17:27,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:27,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-01-31 19:17:27,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:27,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:17:27,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:27,723 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:17:27,723 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:17:27,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1725433985] [2022-01-31 19:17:27,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1725433985] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:17:27,724 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:17:27,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-01-31 19:17:27,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608498699] [2022-01-31 19:17:27,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:17:27,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-31 19:17:27,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:17:27,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-31 19:17:27,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2022-01-31 19:17:27,725 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 11 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:17:27,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:17:27,857 INFO L93 Difference]: Finished difference Result 74 states and 82 transitions. [2022-01-31 19:17:27,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-31 19:17:27,857 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 11 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 64 [2022-01-31 19:17:27,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:17:27,857 INFO L225 Difference]: With dead ends: 74 [2022-01-31 19:17:27,857 INFO L226 Difference]: Without dead ends: 50 [2022-01-31 19:17:27,858 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420 [2022-01-31 19:17:27,858 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 37 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 19:17:27,858 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 37 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 19:17:27,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-01-31 19:17:27,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2022-01-31 19:17:27,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 41 states have (on average 1.0731707317073171) internal successors, (44), 41 states have internal predecessors, (44), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:17:27,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2022-01-31 19:17:27,862 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 64 [2022-01-31 19:17:27,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:17:27,862 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2022-01-31 19:17:27,862 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 11 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:17:27,863 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2022-01-31 19:17:27,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-31 19:17:27,863 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:17:27,863 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 6, 6, 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] [2022-01-31 19:17:27,863 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-31 19:17:27,863 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:17:27,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:17:27,864 INFO L85 PathProgramCache]: Analyzing trace with hash 304211802, now seen corresponding path program 9 times [2022-01-31 19:17:27,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:17:27,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [180427695] [2022-01-31 19:17:27,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:17:27,865 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:17:27,865 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:17:27,865 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:17:27,866 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:17:27,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:27,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:17:27,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:27,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-01-31 19:17:27,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:27,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-01-31 19:17:27,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:27,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-01-31 19:17:27,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:27,953 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:17:27,953 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:17:27,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [180427695] [2022-01-31 19:17:27,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [180427695] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:17:27,953 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:17:27,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-01-31 19:17:27,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329902052] [2022-01-31 19:17:27,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:17:27,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-31 19:17:27,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:17:27,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-31 19:17:27,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2022-01-31 19:17:27,954 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 12 states have internal predecessors, (37), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:17:28,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:17:28,070 INFO L93 Difference]: Finished difference Result 76 states and 84 transitions. [2022-01-31 19:17:28,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-31 19:17:28,070 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 12 states have internal predecessors, (37), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 66 [2022-01-31 19:17:28,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:17:28,071 INFO L225 Difference]: With dead ends: 76 [2022-01-31 19:17:28,071 INFO L226 Difference]: Without dead ends: 52 [2022-01-31 19:17:28,071 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2022-01-31 19:17:28,072 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 39 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:17:28,072 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 42 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:17:28,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-01-31 19:17:28,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2022-01-31 19:17:28,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 43 states have (on average 1.069767441860465) internal successors, (46), 43 states have internal predecessors, (46), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:17:28,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2022-01-31 19:17:28,076 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 66 [2022-01-31 19:17:28,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:17:28,076 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2022-01-31 19:17:28,076 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 12 states have internal predecessors, (37), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:17:28,076 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2022-01-31 19:17:28,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-31 19:17:28,076 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:17:28,077 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 6, 6, 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] [2022-01-31 19:17:28,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-31 19:17:28,077 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:17:28,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:17:28,077 INFO L85 PathProgramCache]: Analyzing trace with hash 1205533756, now seen corresponding path program 10 times [2022-01-31 19:17:28,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:17:28,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1790537457] [2022-01-31 19:17:28,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:17:28,078 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:17:28,079 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:17:28,079 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:17:28,082 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:17:28,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:28,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:17:28,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:28,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:17:28,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:28,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-01-31 19:17:28,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:28,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-01-31 19:17:28,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:28,195 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:17:28,195 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:17:28,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1790537457] [2022-01-31 19:17:28,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1790537457] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:17:28,195 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:17:28,195 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-31 19:17:28,196 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091126255] [2022-01-31 19:17:28,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:17:28,196 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-31 19:17:28,197 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:17:28,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-31 19:17:28,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2022-01-31 19:17:28,197 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 13 states have internal predecessors, (39), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:17:28,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:17:28,334 INFO L93 Difference]: Finished difference Result 78 states and 86 transitions. [2022-01-31 19:17:28,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-31 19:17:28,335 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 13 states have internal predecessors, (39), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 68 [2022-01-31 19:17:28,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:17:28,335 INFO L225 Difference]: With dead ends: 78 [2022-01-31 19:17:28,335 INFO L226 Difference]: Without dead ends: 54 [2022-01-31 19:17:28,337 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=234, Invalid=366, Unknown=0, NotChecked=0, Total=600 [2022-01-31 19:17:28,338 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 41 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:17:28,338 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 52 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:17:28,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-01-31 19:17:28,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2022-01-31 19:17:28,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 45 states have (on average 1.0666666666666667) internal successors, (48), 45 states have internal predecessors, (48), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:17:28,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2022-01-31 19:17:28,342 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 68 [2022-01-31 19:17:28,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:17:28,342 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2022-01-31 19:17:28,343 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 13 states have internal predecessors, (39), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:17:28,343 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2022-01-31 19:17:28,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-31 19:17:28,343 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:17:28,343 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 6, 6, 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] [2022-01-31 19:17:28,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-31 19:17:28,343 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:17:28,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:17:28,344 INFO L85 PathProgramCache]: Analyzing trace with hash -207462242, now seen corresponding path program 11 times [2022-01-31 19:17:28,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:17:28,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [11206582] [2022-01-31 19:17:28,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:17:28,346 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:17:28,346 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:17:28,346 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:17:28,347 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:17:28,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:28,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:17:28,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:28,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-01-31 19:17:28,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:28,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 19:17:28,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:28,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-01-31 19:17:28,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:28,459 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:17:28,460 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:17:28,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [11206582] [2022-01-31 19:17:28,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [11206582] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:17:28,460 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:17:28,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-01-31 19:17:28,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758108132] [2022-01-31 19:17:28,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:17:28,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-31 19:17:28,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:17:28,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-31 19:17:28,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2022-01-31 19:17:28,461 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 14 states have internal predecessors, (41), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:17:28,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:17:28,601 INFO L93 Difference]: Finished difference Result 80 states and 88 transitions. [2022-01-31 19:17:28,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-31 19:17:28,602 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 14 states have internal predecessors, (41), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 70 [2022-01-31 19:17:28,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:17:28,602 INFO L225 Difference]: With dead ends: 80 [2022-01-31 19:17:28,602 INFO L226 Difference]: Without dead ends: 56 [2022-01-31 19:17:28,603 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=273, Invalid=429, Unknown=0, NotChecked=0, Total=702 [2022-01-31 19:17:28,603 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 43 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:17:28,603 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 42 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:17:28,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-01-31 19:17:28,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2022-01-31 19:17:28,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 47 states have (on average 1.0638297872340425) internal successors, (50), 47 states have internal predecessors, (50), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:17:28,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2022-01-31 19:17:28,613 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 70 [2022-01-31 19:17:28,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:17:28,614 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2022-01-31 19:17:28,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 14 states have internal predecessors, (41), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:17:28,614 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2022-01-31 19:17:28,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-31 19:17:28,614 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:17:28,614 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 6, 6, 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] [2022-01-31 19:17:28,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-31 19:17:28,615 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:17:28,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:17:28,615 INFO L85 PathProgramCache]: Analyzing trace with hash -886950784, now seen corresponding path program 12 times [2022-01-31 19:17:28,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:17:28,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1215991645] [2022-01-31 19:17:28,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:17:28,617 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:17:28,617 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:17:28,617 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:17:28,618 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:17:28,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:28,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:17:28,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:28,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-01-31 19:17:28,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:28,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-01-31 19:17:28,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:28,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:17:28,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:28,742 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:17:28,742 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:17:28,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1215991645] [2022-01-31 19:17:28,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1215991645] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:17:28,742 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:17:28,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-01-31 19:17:28,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141728755] [2022-01-31 19:17:28,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:17:28,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-31 19:17:28,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:17:28,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-31 19:17:28,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2022-01-31 19:17:28,743 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand has 16 states, 16 states have (on average 2.6875) internal successors, (43), 15 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:17:28,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:17:28,929 INFO L93 Difference]: Finished difference Result 82 states and 90 transitions. [2022-01-31 19:17:28,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-31 19:17:28,930 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 15 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 72 [2022-01-31 19:17:28,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:17:28,930 INFO L225 Difference]: With dead ends: 82 [2022-01-31 19:17:28,930 INFO L226 Difference]: Without dead ends: 58 [2022-01-31 19:17:28,931 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=315, Invalid=497, Unknown=0, NotChecked=0, Total=812 [2022-01-31 19:17:28,931 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 45 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:17:28,931 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 37 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:17:28,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2022-01-31 19:17:28,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2022-01-31 19:17:28,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 49 states have (on average 1.0612244897959184) internal successors, (52), 49 states have internal predecessors, (52), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:17:28,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 61 transitions. [2022-01-31 19:17:28,936 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 61 transitions. Word has length 72 [2022-01-31 19:17:28,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:17:28,937 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 61 transitions. [2022-01-31 19:17:28,937 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 15 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:17:28,937 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 61 transitions. [2022-01-31 19:17:28,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-31 19:17:28,937 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:17:28,938 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 6, 6, 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] [2022-01-31 19:17:28,938 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-31 19:17:28,938 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:17:28,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:17:28,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1040410654, now seen corresponding path program 13 times [2022-01-31 19:17:28,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:17:28,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [556344637] [2022-01-31 19:17:28,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:17:28,941 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:17:28,941 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:17:28,941 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:17:28,942 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:17:28,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:29,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:17:29,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:29,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-01-31 19:17:29,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:29,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 19:17:29,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:29,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-01-31 19:17:29,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:29,135 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:17:29,136 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:17:29,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [556344637] [2022-01-31 19:17:29,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [556344637] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:17:29,136 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:17:29,136 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-01-31 19:17:29,136 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934569565] [2022-01-31 19:17:29,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:17:29,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-31 19:17:29,157 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:17:29,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-31 19:17:29,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2022-01-31 19:17:29,158 INFO L87 Difference]: Start difference. First operand 57 states and 61 transitions. Second operand has 17 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 16 states have internal predecessors, (45), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:17:29,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:17:29,332 INFO L93 Difference]: Finished difference Result 84 states and 92 transitions. [2022-01-31 19:17:29,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-31 19:17:29,333 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 16 states have internal predecessors, (45), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 74 [2022-01-31 19:17:29,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:17:29,334 INFO L225 Difference]: With dead ends: 84 [2022-01-31 19:17:29,334 INFO L226 Difference]: Without dead ends: 60 [2022-01-31 19:17:29,334 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=360, Invalid=570, Unknown=0, NotChecked=0, Total=930 [2022-01-31 19:17:29,335 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 47 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:17:29,335 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 37 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:17:29,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-01-31 19:17:29,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2022-01-31 19:17:29,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 51 states have (on average 1.0588235294117647) internal successors, (54), 51 states have internal predecessors, (54), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:17:29,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2022-01-31 19:17:29,341 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 74 [2022-01-31 19:17:29,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:17:29,341 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2022-01-31 19:17:29,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 16 states have internal predecessors, (45), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:17:29,342 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2022-01-31 19:17:29,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-31 19:17:29,342 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:17:29,342 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 6, 6, 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] [2022-01-31 19:17:29,342 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-31 19:17:29,342 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:17:29,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:17:29,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1808509636, now seen corresponding path program 14 times [2022-01-31 19:17:29,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:17:29,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [30888705] [2022-01-31 19:17:29,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:17:29,345 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:17:29,345 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:17:29,345 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:17:29,346 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:17:29,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:29,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:17:29,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:29,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:17:29,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:29,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-01-31 19:17:29,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:29,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-01-31 19:17:29,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:29,476 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:17:29,476 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:17:29,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [30888705] [2022-01-31 19:17:29,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [30888705] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:17:29,476 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:17:29,476 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-01-31 19:17:29,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826226434] [2022-01-31 19:17:29,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:17:29,477 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-31 19:17:29,477 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:17:29,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-31 19:17:29,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2022-01-31 19:17:29,477 INFO L87 Difference]: Start difference. First operand 59 states and 63 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:17:29,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:17:29,672 INFO L93 Difference]: Finished difference Result 86 states and 94 transitions. [2022-01-31 19:17:29,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-31 19:17:29,673 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 76 [2022-01-31 19:17:29,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:17:29,673 INFO L225 Difference]: With dead ends: 86 [2022-01-31 19:17:29,673 INFO L226 Difference]: Without dead ends: 62 [2022-01-31 19:17:29,674 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=408, Invalid=648, Unknown=0, NotChecked=0, Total=1056 [2022-01-31 19:17:29,674 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 49 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:17:29,674 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 47 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:17:29,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-01-31 19:17:29,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2022-01-31 19:17:29,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 53 states have (on average 1.0566037735849056) internal successors, (56), 53 states have internal predecessors, (56), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:17:29,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions. [2022-01-31 19:17:29,679 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 76 [2022-01-31 19:17:29,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:17:29,679 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 65 transitions. [2022-01-31 19:17:29,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:17:29,679 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 65 transitions. [2022-01-31 19:17:29,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-31 19:17:29,679 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:17:29,680 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 6, 6, 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] [2022-01-31 19:17:29,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-31 19:17:29,680 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:17:29,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:17:29,680 INFO L85 PathProgramCache]: Analyzing trace with hash -568226522, now seen corresponding path program 15 times [2022-01-31 19:17:29,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:17:29,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [160137122] [2022-01-31 19:17:29,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:17:29,681 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:17:29,682 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:17:29,682 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:17:29,683 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:17:29,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:29,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:17:29,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:29,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-01-31 19:17:29,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:29,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-01-31 19:17:29,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:29,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-01-31 19:17:29,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:29,817 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:17:29,818 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:17:29,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [160137122] [2022-01-31 19:17:29,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [160137122] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:17:29,818 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:17:29,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-31 19:17:29,818 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930684381] [2022-01-31 19:17:29,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:17:29,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-31 19:17:29,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:17:29,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-31 19:17:29,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2022-01-31 19:17:29,819 INFO L87 Difference]: Start difference. First operand 61 states and 65 transitions. Second operand has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:17:30,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:17:30,034 INFO L93 Difference]: Finished difference Result 88 states and 96 transitions. [2022-01-31 19:17:30,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-31 19:17:30,035 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 78 [2022-01-31 19:17:30,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:17:30,035 INFO L225 Difference]: With dead ends: 88 [2022-01-31 19:17:30,035 INFO L226 Difference]: Without dead ends: 64 [2022-01-31 19:17:30,036 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=459, Invalid=731, Unknown=0, NotChecked=0, Total=1190 [2022-01-31 19:17:30,036 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 51 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:17:30,036 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 47 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:17:30,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-01-31 19:17:30,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2022-01-31 19:17:30,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 55 states have (on average 1.0545454545454545) internal successors, (58), 55 states have internal predecessors, (58), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:17:30,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 67 transitions. [2022-01-31 19:17:30,041 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 67 transitions. Word has length 78 [2022-01-31 19:17:30,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:17:30,041 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 67 transitions. [2022-01-31 19:17:30,041 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:17:30,041 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 67 transitions. [2022-01-31 19:17:30,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-01-31 19:17:30,042 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:17:30,042 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 6, 6, 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] [2022-01-31 19:17:30,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-31 19:17:30,042 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:17:30,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:17:30,043 INFO L85 PathProgramCache]: Analyzing trace with hash 310927112, now seen corresponding path program 16 times [2022-01-31 19:17:30,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:17:30,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [170075824] [2022-01-31 19:17:30,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:17:30,044 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:17:30,044 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:17:30,044 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:17:30,045 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:17:30,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:30,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:17:30,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:30,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-31 19:17:30,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:30,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 19:17:30,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:30,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:17:30,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:30,214 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:17:30,214 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:17:30,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [170075824] [2022-01-31 19:17:30,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [170075824] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:17:30,215 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:17:30,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-31 19:17:30,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116796589] [2022-01-31 19:17:30,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:17:30,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-31 19:17:30,215 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:17:30,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-31 19:17:30,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2022-01-31 19:17:30,216 INFO L87 Difference]: Start difference. First operand 63 states and 67 transitions. Second operand has 20 states, 20 states have (on average 2.55) internal successors, (51), 19 states have internal predecessors, (51), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:17:30,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:17:30,520 INFO L93 Difference]: Finished difference Result 90 states and 98 transitions. [2022-01-31 19:17:30,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-31 19:17:30,521 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.55) internal successors, (51), 19 states have internal predecessors, (51), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 80 [2022-01-31 19:17:30,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:17:30,521 INFO L225 Difference]: With dead ends: 90 [2022-01-31 19:17:30,521 INFO L226 Difference]: Without dead ends: 66 [2022-01-31 19:17:30,522 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=513, Invalid=819, Unknown=0, NotChecked=0, Total=1332 [2022-01-31 19:17:30,522 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 53 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:17:30,522 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 62 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:17:30,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2022-01-31 19:17:30,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2022-01-31 19:17:30,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 57 states have (on average 1.0526315789473684) internal successors, (60), 57 states have internal predecessors, (60), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:17:30,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2022-01-31 19:17:30,541 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 80 [2022-01-31 19:17:30,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:17:30,541 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2022-01-31 19:17:30,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.55) internal successors, (51), 19 states have internal predecessors, (51), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:17:30,542 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2022-01-31 19:17:30,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-01-31 19:17:30,542 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:17:30,542 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 6, 6, 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] [2022-01-31 19:17:30,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-31 19:17:30,542 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:17:30,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:17:30,543 INFO L85 PathProgramCache]: Analyzing trace with hash -930987926, now seen corresponding path program 17 times [2022-01-31 19:17:30,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:17:30,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1290996973] [2022-01-31 19:17:30,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:17:30,544 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:17:30,544 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:17:30,544 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:17:30,545 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:17:30,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:30,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:17:30,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:30,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-01-31 19:17:30,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:30,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-01-31 19:17:30,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:30,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-01-31 19:17:30,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:30,753 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:17:30,754 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:17:30,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1290996973] [2022-01-31 19:17:30,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1290996973] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:17:30,754 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:17:30,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-31 19:17:30,754 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175209421] [2022-01-31 19:17:30,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:17:30,754 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-31 19:17:30,754 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:17:30,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-31 19:17:30,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2022-01-31 19:17:30,755 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand has 21 states, 21 states have (on average 2.5238095238095237) internal successors, (53), 20 states have internal predecessors, (53), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:17:31,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:17:31,075 INFO L93 Difference]: Finished difference Result 92 states and 100 transitions. [2022-01-31 19:17:31,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-31 19:17:31,076 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.5238095238095237) internal successors, (53), 20 states have internal predecessors, (53), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 82 [2022-01-31 19:17:31,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:17:31,077 INFO L225 Difference]: With dead ends: 92 [2022-01-31 19:17:31,077 INFO L226 Difference]: Without dead ends: 68 [2022-01-31 19:17:31,078 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=570, Invalid=912, Unknown=0, NotChecked=0, Total=1482 [2022-01-31 19:17:31,078 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 55 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:17:31,078 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 47 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:17:31,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2022-01-31 19:17:31,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2022-01-31 19:17:31,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 59 states have (on average 1.0508474576271187) internal successors, (62), 59 states have internal predecessors, (62), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:17:31,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2022-01-31 19:17:31,084 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 82 [2022-01-31 19:17:31,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:17:31,084 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2022-01-31 19:17:31,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.5238095238095237) internal successors, (53), 20 states have internal predecessors, (53), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:17:31,084 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2022-01-31 19:17:31,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-31 19:17:31,085 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:17:31,085 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 6, 6, 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] [2022-01-31 19:17:31,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-31 19:17:31,085 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:17:31,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:17:31,085 INFO L85 PathProgramCache]: Analyzing trace with hash -410431156, now seen corresponding path program 18 times [2022-01-31 19:17:31,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:17:31,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [124881718] [2022-01-31 19:17:31,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:17:31,087 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:17:31,087 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:17:31,087 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:17:31,088 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:17:31,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:31,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:17:31,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:31,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:17:31,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:31,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-01-31 19:17:31,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:31,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-01-31 19:17:31,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:31,284 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:17:31,284 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:17:31,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [124881718] [2022-01-31 19:17:31,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [124881718] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:17:31,284 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:17:31,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-31 19:17:31,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127711894] [2022-01-31 19:17:31,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:17:31,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-31 19:17:31,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:17:31,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-31 19:17:31,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2022-01-31 19:17:31,285 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand has 22 states, 22 states have (on average 2.5) internal successors, (55), 21 states have internal predecessors, (55), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:17:31,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:17:31,606 INFO L93 Difference]: Finished difference Result 94 states and 102 transitions. [2022-01-31 19:17:31,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-31 19:17:31,607 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.5) internal successors, (55), 21 states have internal predecessors, (55), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 84 [2022-01-31 19:17:31,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:17:31,607 INFO L225 Difference]: With dead ends: 94 [2022-01-31 19:17:31,607 INFO L226 Difference]: Without dead ends: 70 [2022-01-31 19:17:31,608 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=630, Invalid=1010, Unknown=0, NotChecked=0, Total=1640 [2022-01-31 19:17:31,609 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 57 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:17:31,609 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 47 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:17:31,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-01-31 19:17:31,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 69. [2022-01-31 19:17:31,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 61 states have (on average 1.0491803278688525) internal successors, (64), 61 states have internal predecessors, (64), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:17:31,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2022-01-31 19:17:31,615 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 84 [2022-01-31 19:17:31,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:17:31,615 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2022-01-31 19:17:31,615 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.5) internal successors, (55), 21 states have internal predecessors, (55), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:17:31,616 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2022-01-31 19:17:31,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-01-31 19:17:31,616 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:17:31,616 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 6, 6, 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] [2022-01-31 19:17:31,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-31 19:17:31,616 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:17:31,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:17:31,617 INFO L85 PathProgramCache]: Analyzing trace with hash 1628418478, now seen corresponding path program 19 times [2022-01-31 19:17:31,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:17:31,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [623584821] [2022-01-31 19:17:31,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:17:31,618 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:17:31,618 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:17:31,618 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:17:31,619 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:17:31,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:31,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:17:31,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:31,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-01-31 19:17:31,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:31,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-01-31 19:17:31,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:31,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-01-31 19:17:31,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:31,839 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:17:31,839 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:17:31,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [623584821] [2022-01-31 19:17:31,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [623584821] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:17:31,839 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:17:31,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-01-31 19:17:31,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351472451] [2022-01-31 19:17:31,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:17:31,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-01-31 19:17:31,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:17:31,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-01-31 19:17:31,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2022-01-31 19:17:31,840 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand has 23 states, 23 states have (on average 2.4782608695652173) internal successors, (57), 22 states have internal predecessors, (57), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:17:32,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:17:32,175 INFO L93 Difference]: Finished difference Result 96 states and 104 transitions. [2022-01-31 19:17:32,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-31 19:17:32,176 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.4782608695652173) internal successors, (57), 22 states have internal predecessors, (57), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 86 [2022-01-31 19:17:32,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:17:32,176 INFO L225 Difference]: With dead ends: 96 [2022-01-31 19:17:32,176 INFO L226 Difference]: Without dead ends: 72 [2022-01-31 19:17:32,177 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=693, Invalid=1113, Unknown=0, NotChecked=0, Total=1806 [2022-01-31 19:17:32,177 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 59 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:17:32,177 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 42 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:17:32,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2022-01-31 19:17:32,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2022-01-31 19:17:32,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 63 states have (on average 1.0476190476190477) internal successors, (66), 63 states have internal predecessors, (66), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:17:32,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2022-01-31 19:17:32,185 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 86 [2022-01-31 19:17:32,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:17:32,185 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2022-01-31 19:17:32,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.4782608695652173) internal successors, (57), 22 states have internal predecessors, (57), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:17:32,185 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2022-01-31 19:17:32,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-31 19:17:32,186 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:17:32,186 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 6, 6, 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] [2022-01-31 19:17:32,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-31 19:17:32,186 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:17:32,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:17:32,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1837137520, now seen corresponding path program 20 times [2022-01-31 19:17:32,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:17:32,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [82792981] [2022-01-31 19:17:32,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:17:32,188 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:17:32,188 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:17:32,188 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:17:32,190 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:17:32,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:32,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:17:32,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:32,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-31 19:17:32,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:32,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-01-31 19:17:32,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:32,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:17:32,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:32,429 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:17:32,429 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:17:32,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [82792981] [2022-01-31 19:17:32,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [82792981] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:17:32,429 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:17:32,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-01-31 19:17:32,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781112361] [2022-01-31 19:17:32,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:17:32,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-31 19:17:32,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:17:32,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-31 19:17:32,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2022-01-31 19:17:32,431 INFO L87 Difference]: Start difference. First operand 71 states and 75 transitions. Second operand has 24 states, 24 states have (on average 2.4583333333333335) internal successors, (59), 23 states have internal predecessors, (59), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:17:32,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:17:32,762 INFO L93 Difference]: Finished difference Result 98 states and 106 transitions. [2022-01-31 19:17:32,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-31 19:17:32,763 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.4583333333333335) internal successors, (59), 23 states have internal predecessors, (59), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 88 [2022-01-31 19:17:32,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:17:32,764 INFO L225 Difference]: With dead ends: 98 [2022-01-31 19:17:32,764 INFO L226 Difference]: Without dead ends: 74 [2022-01-31 19:17:32,765 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=759, Invalid=1221, Unknown=0, NotChecked=0, Total=1980 [2022-01-31 19:17:32,765 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 61 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:17:32,769 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 42 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:17:32,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-01-31 19:17:32,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2022-01-31 19:17:32,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 65 states have (on average 1.0461538461538462) internal successors, (68), 65 states have internal predecessors, (68), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:17:32,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2022-01-31 19:17:32,775 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 88 [2022-01-31 19:17:32,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:17:32,775 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2022-01-31 19:17:32,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.4583333333333335) internal successors, (59), 23 states have internal predecessors, (59), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:17:32,775 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2022-01-31 19:17:32,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-31 19:17:32,776 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:17:32,776 INFO L514 BasicCegarLoop]: trace histogram [21, 21, 6, 6, 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] [2022-01-31 19:17:32,776 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-31 19:17:32,776 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:17:32,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:17:32,776 INFO L85 PathProgramCache]: Analyzing trace with hash 658170098, now seen corresponding path program 21 times [2022-01-31 19:17:32,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:17:32,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1328409926] [2022-01-31 19:17:32,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:17:32,778 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:17:32,779 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:17:32,779 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:17:32,780 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:17:32,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:33,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:17:33,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:33,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-01-31 19:17:33,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:33,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-31 19:17:33,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:33,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-01-31 19:17:33,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:33,036 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:17:33,037 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:17:33,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1328409926] [2022-01-31 19:17:33,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1328409926] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:17:33,037 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:17:33,037 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-01-31 19:17:33,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240752297] [2022-01-31 19:17:33,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:17:33,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-31 19:17:33,037 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:17:33,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-31 19:17:33,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2022-01-31 19:17:33,038 INFO L87 Difference]: Start difference. First operand 73 states and 77 transitions. Second operand has 25 states, 25 states have (on average 2.44) internal successors, (61), 24 states have internal predecessors, (61), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:17:33,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:17:33,361 INFO L93 Difference]: Finished difference Result 100 states and 108 transitions. [2022-01-31 19:17:33,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-01-31 19:17:33,361 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.44) internal successors, (61), 24 states have internal predecessors, (61), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 90 [2022-01-31 19:17:33,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:17:33,361 INFO L225 Difference]: With dead ends: 100 [2022-01-31 19:17:33,361 INFO L226 Difference]: Without dead ends: 76 [2022-01-31 19:17:33,362 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=828, Invalid=1334, Unknown=0, NotChecked=0, Total=2162 [2022-01-31 19:17:33,363 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 63 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:17:33,363 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 42 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:17:33,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-01-31 19:17:33,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2022-01-31 19:17:33,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 67 states have (on average 1.044776119402985) internal successors, (70), 67 states have internal predecessors, (70), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:17:33,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2022-01-31 19:17:33,369 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 90 [2022-01-31 19:17:33,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:17:33,369 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 79 transitions. [2022-01-31 19:17:33,369 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.44) internal successors, (61), 24 states have internal predecessors, (61), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:17:33,370 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 79 transitions. [2022-01-31 19:17:33,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-01-31 19:17:33,370 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:17:33,370 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 6, 6, 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] [2022-01-31 19:17:33,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-31 19:17:33,370 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:17:33,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:17:33,371 INFO L85 PathProgramCache]: Analyzing trace with hash 2057039828, now seen corresponding path program 22 times [2022-01-31 19:17:33,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:17:33,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [273857997] [2022-01-31 19:17:33,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:17:33,372 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:17:33,372 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:17:33,372 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:17:33,376 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:17:33,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:33,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:17:33,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:33,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:17:33,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:33,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-01-31 19:17:33,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:33,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-01-31 19:17:33,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:33,604 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:17:33,604 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:17:33,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [273857997] [2022-01-31 19:17:33,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [273857997] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:17:33,604 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:17:33,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-01-31 19:17:33,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609802088] [2022-01-31 19:17:33,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:17:33,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-31 19:17:33,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:17:33,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-31 19:17:33,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2022-01-31 19:17:33,605 INFO L87 Difference]: Start difference. First operand 75 states and 79 transitions. Second operand has 26 states, 26 states have (on average 2.423076923076923) internal successors, (63), 25 states have internal predecessors, (63), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:17:33,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:17:33,949 INFO L93 Difference]: Finished difference Result 102 states and 110 transitions. [2022-01-31 19:17:33,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-01-31 19:17:33,950 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.423076923076923) internal successors, (63), 25 states have internal predecessors, (63), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 92 [2022-01-31 19:17:33,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:17:33,950 INFO L225 Difference]: With dead ends: 102 [2022-01-31 19:17:33,950 INFO L226 Difference]: Without dead ends: 78 [2022-01-31 19:17:33,951 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=900, Invalid=1452, Unknown=0, NotChecked=0, Total=2352 [2022-01-31 19:17:33,951 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 65 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:17:33,951 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 42 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:17:33,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-01-31 19:17:33,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2022-01-31 19:17:33,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 69 states have (on average 1.0434782608695652) internal successors, (72), 69 states have internal predecessors, (72), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:17:33,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 81 transitions. [2022-01-31 19:17:33,958 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 81 transitions. Word has length 92 [2022-01-31 19:17:33,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:17:33,958 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 81 transitions. [2022-01-31 19:17:33,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.423076923076923) internal successors, (63), 25 states have internal predecessors, (63), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:17:33,959 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 81 transitions. [2022-01-31 19:17:33,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-01-31 19:17:33,959 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:17:33,959 INFO L514 BasicCegarLoop]: trace histogram [23, 23, 6, 6, 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] [2022-01-31 19:17:33,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-31 19:17:33,959 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:17:33,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:17:33,960 INFO L85 PathProgramCache]: Analyzing trace with hash 2046086710, now seen corresponding path program 23 times [2022-01-31 19:17:33,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:17:33,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [766331918] [2022-01-31 19:17:33,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:17:33,961 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:17:33,961 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:17:33,961 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:17:33,962 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:17:33,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:34,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:17:34,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:34,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-01-31 19:17:34,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:34,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-01-31 19:17:34,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:34,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 19:17:34,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:34,293 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:17:34,293 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:17:34,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [766331918] [2022-01-31 19:17:34,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [766331918] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:17:34,293 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:17:34,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-01-31 19:17:34,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679460893] [2022-01-31 19:17:34,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:17:34,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-31 19:17:34,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:17:34,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-31 19:17:34,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2022-01-31 19:17:34,294 INFO L87 Difference]: Start difference. First operand 77 states and 81 transitions. Second operand has 27 states, 27 states have (on average 2.4074074074074074) internal successors, (65), 26 states have internal predecessors, (65), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:17:34,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:17:34,612 INFO L93 Difference]: Finished difference Result 104 states and 112 transitions. [2022-01-31 19:17:34,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-31 19:17:34,613 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.4074074074074074) internal successors, (65), 26 states have internal predecessors, (65), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 94 [2022-01-31 19:17:34,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:17:34,626 INFO L225 Difference]: With dead ends: 104 [2022-01-31 19:17:34,626 INFO L226 Difference]: Without dead ends: 80 [2022-01-31 19:17:34,628 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=975, Invalid=1575, Unknown=0, NotChecked=0, Total=2550 [2022-01-31 19:17:34,628 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 67 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:17:34,629 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 62 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:17:34,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-01-31 19:17:34,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 79. [2022-01-31 19:17:34,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 71 states have (on average 1.0422535211267605) internal successors, (74), 71 states have internal predecessors, (74), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:17:34,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 83 transitions. [2022-01-31 19:17:34,637 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 83 transitions. Word has length 94 [2022-01-31 19:17:34,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:17:34,637 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 83 transitions. [2022-01-31 19:17:34,637 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.4074074074074074) internal successors, (65), 26 states have internal predecessors, (65), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:17:34,637 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 83 transitions. [2022-01-31 19:17:34,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-01-31 19:17:34,638 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:17:34,638 INFO L514 BasicCegarLoop]: trace histogram [24, 24, 6, 6, 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] [2022-01-31 19:17:34,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-01-31 19:17:34,638 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:17:34,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:17:34,638 INFO L85 PathProgramCache]: Analyzing trace with hash 110074904, now seen corresponding path program 24 times [2022-01-31 19:17:34,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:17:34,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [667269561] [2022-01-31 19:17:34,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:17:34,640 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:17:34,640 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:17:34,640 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:17:34,656 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:17:34,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:34,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:17:34,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:34,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-01-31 19:17:34,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:34,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-01-31 19:17:34,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:34,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:17:34,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:34,938 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:17:34,938 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:17:34,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [667269561] [2022-01-31 19:17:34,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [667269561] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:17:34,938 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:17:34,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-01-31 19:17:34,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001735885] [2022-01-31 19:17:34,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:17:34,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-31 19:17:34,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:17:34,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-31 19:17:34,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2022-01-31 19:17:34,942 INFO L87 Difference]: Start difference. First operand 79 states and 83 transitions. Second operand has 28 states, 28 states have (on average 2.392857142857143) internal successors, (67), 27 states have internal predecessors, (67), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:17:35,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:17:35,323 INFO L93 Difference]: Finished difference Result 106 states and 114 transitions. [2022-01-31 19:17:35,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-31 19:17:35,324 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.392857142857143) internal successors, (67), 27 states have internal predecessors, (67), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 96 [2022-01-31 19:17:35,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:17:35,324 INFO L225 Difference]: With dead ends: 106 [2022-01-31 19:17:35,324 INFO L226 Difference]: Without dead ends: 82 [2022-01-31 19:17:35,325 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1053, Invalid=1703, Unknown=0, NotChecked=0, Total=2756 [2022-01-31 19:17:35,326 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 69 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:17:35,327 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 42 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:17:35,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2022-01-31 19:17:35,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 81. [2022-01-31 19:17:35,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 73 states have (on average 1.0410958904109588) internal successors, (76), 73 states have internal predecessors, (76), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:17:35,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 85 transitions. [2022-01-31 19:17:35,334 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 85 transitions. Word has length 96 [2022-01-31 19:17:35,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:17:35,334 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 85 transitions. [2022-01-31 19:17:35,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.392857142857143) internal successors, (67), 27 states have internal predecessors, (67), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:17:35,335 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 85 transitions. [2022-01-31 19:17:35,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-01-31 19:17:35,335 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:17:35,335 INFO L514 BasicCegarLoop]: trace histogram [25, 25, 6, 6, 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] [2022-01-31 19:17:35,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-01-31 19:17:35,335 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:17:35,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:17:35,336 INFO L85 PathProgramCache]: Analyzing trace with hash -676431494, now seen corresponding path program 25 times [2022-01-31 19:17:35,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:17:35,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [493024097] [2022-01-31 19:17:35,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:17:35,337 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:17:35,337 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:17:35,337 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:17:35,339 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:17:35,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:35,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:17:35,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:35,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-01-31 19:17:35,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:35,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-01-31 19:17:35,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:35,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-01-31 19:17:35,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:35,658 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:17:35,658 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:17:35,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [493024097] [2022-01-31 19:17:35,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [493024097] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:17:35,659 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:17:35,659 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2022-01-31 19:17:35,659 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265254519] [2022-01-31 19:17:35,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:17:35,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-01-31 19:17:35,659 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:17:35,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-01-31 19:17:35,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2022-01-31 19:17:35,660 INFO L87 Difference]: Start difference. First operand 81 states and 85 transitions. Second operand has 29 states, 29 states have (on average 2.3793103448275863) internal successors, (69), 28 states have internal predecessors, (69), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:17:36,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:17:36,067 INFO L93 Difference]: Finished difference Result 108 states and 116 transitions. [2022-01-31 19:17:36,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-31 19:17:36,067 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.3793103448275863) internal successors, (69), 28 states have internal predecessors, (69), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 98 [2022-01-31 19:17:36,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:17:36,067 INFO L225 Difference]: With dead ends: 108 [2022-01-31 19:17:36,068 INFO L226 Difference]: Without dead ends: 84 [2022-01-31 19:17:36,068 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1134, Invalid=1836, Unknown=0, NotChecked=0, Total=2970 [2022-01-31 19:17:36,069 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 71 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:17:36,069 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 42 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:17:36,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2022-01-31 19:17:36,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 83. [2022-01-31 19:17:36,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 75 states have (on average 1.04) internal successors, (78), 75 states have internal predecessors, (78), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:17:36,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 87 transitions. [2022-01-31 19:17:36,076 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 87 transitions. Word has length 98 [2022-01-31 19:17:36,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:17:36,077 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 87 transitions. [2022-01-31 19:17:36,077 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.3793103448275863) internal successors, (69), 28 states have internal predecessors, (69), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:17:36,077 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 87 transitions. [2022-01-31 19:17:36,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-01-31 19:17:36,079 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:17:36,079 INFO L514 BasicCegarLoop]: trace histogram [26, 26, 6, 6, 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] [2022-01-31 19:17:36,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-01-31 19:17:36,079 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:17:36,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:17:36,079 INFO L85 PathProgramCache]: Analyzing trace with hash -594835876, now seen corresponding path program 26 times [2022-01-31 19:17:36,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:17:36,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [605616113] [2022-01-31 19:17:36,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:17:36,082 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:17:36,082 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:17:36,082 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:17:36,084 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:17:36,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:36,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:17:36,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:36,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:17:36,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:36,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-01-31 19:17:36,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:36,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-31 19:17:36,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:36,429 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:17:36,429 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:17:36,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [605616113] [2022-01-31 19:17:36,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [605616113] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:17:36,429 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:17:36,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-01-31 19:17:36,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225990122] [2022-01-31 19:17:36,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:17:36,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-01-31 19:17:36,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:17:36,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-01-31 19:17:36,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2022-01-31 19:17:36,431 INFO L87 Difference]: Start difference. First operand 83 states and 87 transitions. Second operand has 30 states, 30 states have (on average 2.3666666666666667) internal successors, (71), 29 states have internal predecessors, (71), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:17:36,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:17:36,839 INFO L93 Difference]: Finished difference Result 110 states and 118 transitions. [2022-01-31 19:17:36,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-31 19:17:36,840 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.3666666666666667) internal successors, (71), 29 states have internal predecessors, (71), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 100 [2022-01-31 19:17:36,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:17:36,840 INFO L225 Difference]: With dead ends: 110 [2022-01-31 19:17:36,840 INFO L226 Difference]: Without dead ends: 86 [2022-01-31 19:17:36,841 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 377 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1218, Invalid=1974, Unknown=0, NotChecked=0, Total=3192 [2022-01-31 19:17:36,842 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 73 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:17:36,842 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 52 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:17:36,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2022-01-31 19:17:36,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85. [2022-01-31 19:17:36,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 77 states have (on average 1.0389610389610389) internal successors, (80), 77 states have internal predecessors, (80), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:17:36,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 89 transitions. [2022-01-31 19:17:36,849 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 89 transitions. Word has length 100 [2022-01-31 19:17:36,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:17:36,849 INFO L470 AbstractCegarLoop]: Abstraction has 85 states and 89 transitions. [2022-01-31 19:17:36,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.3666666666666667) internal successors, (71), 29 states have internal predecessors, (71), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:17:36,849 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 89 transitions. [2022-01-31 19:17:36,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-01-31 19:17:36,850 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:17:36,850 INFO L514 BasicCegarLoop]: trace histogram [27, 27, 6, 6, 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] [2022-01-31 19:17:36,850 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-01-31 19:17:36,850 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:17:36,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:17:36,850 INFO L85 PathProgramCache]: Analyzing trace with hash 509141694, now seen corresponding path program 27 times [2022-01-31 19:17:36,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:17:36,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1685851534] [2022-01-31 19:17:36,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:17:36,860 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:17:36,860 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:17:36,860 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:17:36,861 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:17:36,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:37,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:17:37,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:37,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-01-31 19:17:37,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:37,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-01-31 19:17:37,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:37,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-01-31 19:17:37,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:37,239 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:17:37,239 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:17:37,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1685851534] [2022-01-31 19:17:37,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1685851534] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:17:37,239 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:17:37,239 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2022-01-31 19:17:37,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725127277] [2022-01-31 19:17:37,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:17:37,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-31 19:17:37,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:17:37,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-31 19:17:37,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2022-01-31 19:17:37,240 INFO L87 Difference]: Start difference. First operand 85 states and 89 transitions. Second operand has 31 states, 31 states have (on average 2.3548387096774195) internal successors, (73), 30 states have internal predecessors, (73), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:17:37,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:17:37,740 INFO L93 Difference]: Finished difference Result 112 states and 120 transitions. [2022-01-31 19:17:37,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-01-31 19:17:37,741 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.3548387096774195) internal successors, (73), 30 states have internal predecessors, (73), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 102 [2022-01-31 19:17:37,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:17:37,741 INFO L225 Difference]: With dead ends: 112 [2022-01-31 19:17:37,741 INFO L226 Difference]: Without dead ends: 88 [2022-01-31 19:17:37,742 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 405 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1305, Invalid=2117, Unknown=0, NotChecked=0, Total=3422 [2022-01-31 19:17:37,742 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 75 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:17:37,742 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 37 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:17:37,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2022-01-31 19:17:37,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 87. [2022-01-31 19:17:37,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 79 states have (on average 1.0379746835443038) internal successors, (82), 79 states have internal predecessors, (82), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:17:37,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 91 transitions. [2022-01-31 19:17:37,753 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 91 transitions. Word has length 102 [2022-01-31 19:17:37,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:17:37,754 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 91 transitions. [2022-01-31 19:17:37,754 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.3548387096774195) internal successors, (73), 30 states have internal predecessors, (73), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:17:37,754 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 91 transitions. [2022-01-31 19:17:37,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-01-31 19:17:37,754 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:17:37,754 INFO L514 BasicCegarLoop]: trace histogram [28, 28, 6, 6, 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] [2022-01-31 19:17:37,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-01-31 19:17:37,755 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:17:37,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:17:37,755 INFO L85 PathProgramCache]: Analyzing trace with hash 574664352, now seen corresponding path program 28 times [2022-01-31 19:17:37,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:17:37,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [521555286] [2022-01-31 19:17:37,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:17:37,757 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:17:37,757 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:17:37,757 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:17:37,758 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:17:37,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:38,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:17:38,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:38,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-01-31 19:17:38,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:38,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-01-31 19:17:38,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:38,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 19:17:38,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:38,132 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:17:38,133 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:17:38,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [521555286] [2022-01-31 19:17:38,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [521555286] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:17:38,133 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:17:38,133 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-01-31 19:17:38,133 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186828019] [2022-01-31 19:17:38,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:17:38,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-31 19:17:38,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:17:38,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-31 19:17:38,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2022-01-31 19:17:38,134 INFO L87 Difference]: Start difference. First operand 87 states and 91 transitions. Second operand has 32 states, 32 states have (on average 2.34375) internal successors, (75), 31 states have internal predecessors, (75), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:17:38,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:17:38,590 INFO L93 Difference]: Finished difference Result 114 states and 122 transitions. [2022-01-31 19:17:38,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-01-31 19:17:38,590 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.34375) internal successors, (75), 31 states have internal predecessors, (75), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 104 [2022-01-31 19:17:38,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:17:38,591 INFO L225 Difference]: With dead ends: 114 [2022-01-31 19:17:38,591 INFO L226 Difference]: Without dead ends: 90 [2022-01-31 19:17:38,592 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 434 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1395, Invalid=2265, Unknown=0, NotChecked=0, Total=3660 [2022-01-31 19:17:38,593 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 77 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:17:38,593 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 47 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:17:38,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2022-01-31 19:17:38,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 89. [2022-01-31 19:17:38,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 81 states have (on average 1.037037037037037) internal successors, (84), 81 states have internal predecessors, (84), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:17:38,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 93 transitions. [2022-01-31 19:17:38,602 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 93 transitions. Word has length 104 [2022-01-31 19:17:38,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:17:38,602 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 93 transitions. [2022-01-31 19:17:38,602 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.34375) internal successors, (75), 31 states have internal predecessors, (75), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:17:38,602 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 93 transitions. [2022-01-31 19:17:38,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-01-31 19:17:38,603 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:17:38,604 INFO L514 BasicCegarLoop]: trace histogram [29, 29, 6, 6, 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] [2022-01-31 19:17:38,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-01-31 19:17:38,604 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:17:38,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:17:38,604 INFO L85 PathProgramCache]: Analyzing trace with hash -882570750, now seen corresponding path program 29 times [2022-01-31 19:17:38,604 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:17:38,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1657443757] [2022-01-31 19:17:38,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:17:38,606 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:17:38,606 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:17:38,606 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:17:38,607 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:17:38,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:38,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:17:38,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:38,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-01-31 19:17:38,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:38,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-01-31 19:17:38,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:38,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-01-31 19:17:38,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:38,922 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:17:38,922 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:17:38,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1657443757] [2022-01-31 19:17:38,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1657443757] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:17:38,922 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:17:38,922 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-01-31 19:17:38,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918708604] [2022-01-31 19:17:38,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:17:38,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-31 19:17:38,923 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:17:38,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-31 19:17:38,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2022-01-31 19:17:38,924 INFO L87 Difference]: Start difference. First operand 89 states and 93 transitions. Second operand has 33 states, 33 states have (on average 2.3333333333333335) internal successors, (77), 32 states have internal predecessors, (77), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:17:39,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:17:39,420 INFO L93 Difference]: Finished difference Result 116 states and 124 transitions. [2022-01-31 19:17:39,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-01-31 19:17:39,420 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.3333333333333335) internal successors, (77), 32 states have internal predecessors, (77), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 106 [2022-01-31 19:17:39,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:17:39,421 INFO L225 Difference]: With dead ends: 116 [2022-01-31 19:17:39,421 INFO L226 Difference]: Without dead ends: 92 [2022-01-31 19:17:39,422 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 464 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1488, Invalid=2418, Unknown=0, NotChecked=0, Total=3906 [2022-01-31 19:17:39,422 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 79 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:17:39,423 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 47 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:17:39,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2022-01-31 19:17:39,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 91. [2022-01-31 19:17:39,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 83 states have (on average 1.036144578313253) internal successors, (86), 83 states have internal predecessors, (86), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:17:39,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 95 transitions. [2022-01-31 19:17:39,437 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 95 transitions. Word has length 106 [2022-01-31 19:17:39,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:17:39,437 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 95 transitions. [2022-01-31 19:17:39,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.3333333333333335) internal successors, (77), 32 states have internal predecessors, (77), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:17:39,437 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 95 transitions. [2022-01-31 19:17:39,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-01-31 19:17:39,438 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:17:39,438 INFO L514 BasicCegarLoop]: trace histogram [30, 30, 6, 6, 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] [2022-01-31 19:17:39,438 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-01-31 19:17:39,438 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:17:39,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:17:39,439 INFO L85 PathProgramCache]: Analyzing trace with hash -1126165276, now seen corresponding path program 30 times [2022-01-31 19:17:39,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:17:39,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1645090509] [2022-01-31 19:17:39,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:17:39,440 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:17:39,441 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:17:39,441 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:17:39,442 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:17:39,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:39,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:17:39,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:39,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:17:39,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:39,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-01-31 19:17:39,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:39,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-31 19:17:39,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:39,882 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:17:39,882 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:17:39,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1645090509] [2022-01-31 19:17:39,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1645090509] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:17:39,883 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:17:39,883 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2022-01-31 19:17:39,883 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117112748] [2022-01-31 19:17:39,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:17:39,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-31 19:17:39,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:17:39,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-31 19:17:39,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2022-01-31 19:17:39,884 INFO L87 Difference]: Start difference. First operand 91 states and 95 transitions. Second operand has 34 states, 34 states have (on average 2.323529411764706) internal successors, (79), 33 states have internal predecessors, (79), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:17:40,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:17:40,325 INFO L93 Difference]: Finished difference Result 118 states and 126 transitions. [2022-01-31 19:17:40,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-01-31 19:17:40,326 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.323529411764706) internal successors, (79), 33 states have internal predecessors, (79), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 108 [2022-01-31 19:17:40,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:17:40,326 INFO L225 Difference]: With dead ends: 118 [2022-01-31 19:17:40,326 INFO L226 Difference]: Without dead ends: 94 [2022-01-31 19:17:40,327 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 495 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1584, Invalid=2576, Unknown=0, NotChecked=0, Total=4160 [2022-01-31 19:17:40,328 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 81 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:17:40,328 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 42 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:17:40,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-01-31 19:17:40,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 93. [2022-01-31 19:17:40,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 85 states have (on average 1.035294117647059) internal successors, (88), 85 states have internal predecessors, (88), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:17:40,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 97 transitions. [2022-01-31 19:17:40,336 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 97 transitions. Word has length 108 [2022-01-31 19:17:40,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:17:40,337 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 97 transitions. [2022-01-31 19:17:40,337 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.323529411764706) internal successors, (79), 33 states have internal predecessors, (79), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:17:40,337 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 97 transitions. [2022-01-31 19:17:40,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 19:17:40,337 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:17:40,337 INFO L514 BasicCegarLoop]: trace histogram [31, 31, 6, 6, 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] [2022-01-31 19:17:40,337 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-01-31 19:17:40,338 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:17:40,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:17:40,338 INFO L85 PathProgramCache]: Analyzing trace with hash 1002696518, now seen corresponding path program 31 times [2022-01-31 19:17:40,338 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:17:40,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [781767304] [2022-01-31 19:17:40,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:17:40,339 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:17:40,339 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:17:40,340 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:17:40,341 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:17:40,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:40,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:17:40,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:40,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-01-31 19:17:40,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:40,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-01-31 19:17:40,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:40,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-01-31 19:17:40,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:40,781 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:17:40,781 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:17:40,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [781767304] [2022-01-31 19:17:40,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [781767304] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:17:40,782 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:17:40,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2022-01-31 19:17:40,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553245621] [2022-01-31 19:17:40,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:17:40,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-01-31 19:17:40,782 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:17:40,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-01-31 19:17:40,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2022-01-31 19:17:40,784 INFO L87 Difference]: Start difference. First operand 93 states and 97 transitions. Second operand has 35 states, 35 states have (on average 2.3142857142857145) internal successors, (81), 34 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:17:41,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:17:41,202 INFO L93 Difference]: Finished difference Result 120 states and 128 transitions. [2022-01-31 19:17:41,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-31 19:17:41,202 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.3142857142857145) internal successors, (81), 34 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 110 [2022-01-31 19:17:41,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:17:41,203 INFO L225 Difference]: With dead ends: 120 [2022-01-31 19:17:41,203 INFO L226 Difference]: Without dead ends: 96 [2022-01-31 19:17:41,206 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 527 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1683, Invalid=2739, Unknown=0, NotChecked=0, Total=4422 [2022-01-31 19:17:41,206 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 83 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:17:41,206 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 42 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:17:41,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2022-01-31 19:17:41,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 95. [2022-01-31 19:17:41,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 87 states have (on average 1.0344827586206897) internal successors, (90), 87 states have internal predecessors, (90), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:17:41,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 99 transitions. [2022-01-31 19:17:41,219 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 99 transitions. Word has length 110 [2022-01-31 19:17:41,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:17:41,219 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 99 transitions. [2022-01-31 19:17:41,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.3142857142857145) internal successors, (81), 34 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:17:41,219 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 99 transitions. [2022-01-31 19:17:41,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-01-31 19:17:41,220 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:17:41,220 INFO L514 BasicCegarLoop]: trace histogram [32, 32, 6, 6, 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] [2022-01-31 19:17:41,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-01-31 19:17:41,220 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:17:41,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:17:41,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1860519640, now seen corresponding path program 32 times [2022-01-31 19:17:41,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:17:41,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1158404051] [2022-01-31 19:17:41,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:17:41,222 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:17:41,222 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:17:41,222 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:17:41,224 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:17:41,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:41,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:17:41,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:41,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-01-31 19:17:41,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:41,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-01-31 19:17:41,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:41,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 19:17:41,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:41,702 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:17:41,703 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:17:41,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1158404051] [2022-01-31 19:17:41,703 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1158404051] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:17:41,703 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:17:41,703 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2022-01-31 19:17:41,703 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581241405] [2022-01-31 19:17:41,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:17:41,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-31 19:17:41,703 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:17:41,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-31 19:17:41,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2022-01-31 19:17:41,704 INFO L87 Difference]: Start difference. First operand 95 states and 99 transitions. Second operand has 36 states, 36 states have (on average 2.3055555555555554) internal successors, (83), 35 states have internal predecessors, (83), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:17:42,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:17:42,354 INFO L93 Difference]: Finished difference Result 122 states and 130 transitions. [2022-01-31 19:17:42,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-31 19:17:42,355 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.3055555555555554) internal successors, (83), 35 states have internal predecessors, (83), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 112 [2022-01-31 19:17:42,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:17:42,356 INFO L225 Difference]: With dead ends: 122 [2022-01-31 19:17:42,356 INFO L226 Difference]: Without dead ends: 98 [2022-01-31 19:17:42,357 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 560 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1785, Invalid=2907, Unknown=0, NotChecked=0, Total=4692 [2022-01-31 19:17:42,357 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 85 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:17:42,357 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 47 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:17:42,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2022-01-31 19:17:42,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 97. [2022-01-31 19:17:42,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 89 states have (on average 1.0337078651685394) internal successors, (92), 89 states have internal predecessors, (92), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:17:42,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 101 transitions. [2022-01-31 19:17:42,371 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 101 transitions. Word has length 112 [2022-01-31 19:17:42,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:17:42,371 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 101 transitions. [2022-01-31 19:17:42,371 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.3055555555555554) internal successors, (83), 35 states have internal predecessors, (83), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:17:42,371 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 101 transitions. [2022-01-31 19:17:42,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-01-31 19:17:42,372 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:17:42,372 INFO L514 BasicCegarLoop]: trace histogram [33, 33, 6, 6, 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] [2022-01-31 19:17:42,372 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-01-31 19:17:42,372 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:17:42,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:17:42,373 INFO L85 PathProgramCache]: Analyzing trace with hash -337210742, now seen corresponding path program 33 times [2022-01-31 19:17:42,373 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:17:42,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [540763535] [2022-01-31 19:17:42,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:17:42,374 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:17:42,374 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:17:42,374 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:17:42,376 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:17:42,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:42,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:17:42,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:42,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-01-31 19:17:42,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:42,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-01-31 19:17:42,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:42,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-01-31 19:17:42,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:42,869 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:17:42,870 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:17:42,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [540763535] [2022-01-31 19:17:42,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [540763535] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:17:42,870 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:17:42,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2022-01-31 19:17:42,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018197321] [2022-01-31 19:17:42,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:17:42,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-31 19:17:42,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:17:42,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-31 19:17:42,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2022-01-31 19:17:42,871 INFO L87 Difference]: Start difference. First operand 97 states and 101 transitions. Second operand has 37 states, 37 states have (on average 2.2972972972972974) internal successors, (85), 36 states have internal predecessors, (85), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:17:43,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:17:43,447 INFO L93 Difference]: Finished difference Result 124 states and 132 transitions. [2022-01-31 19:17:43,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-31 19:17:43,447 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.2972972972972974) internal successors, (85), 36 states have internal predecessors, (85), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 114 [2022-01-31 19:17:43,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:17:43,473 INFO L225 Difference]: With dead ends: 124 [2022-01-31 19:17:43,473 INFO L226 Difference]: Without dead ends: 100 [2022-01-31 19:17:43,473 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 594 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1890, Invalid=3080, Unknown=0, NotChecked=0, Total=4970 [2022-01-31 19:17:43,474 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 87 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:17:43,474 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 42 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:17:43,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-01-31 19:17:43,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 99. [2022-01-31 19:17:43,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 91 states have (on average 1.032967032967033) internal successors, (94), 91 states have internal predecessors, (94), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:17:43,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 103 transitions. [2022-01-31 19:17:43,499 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 103 transitions. Word has length 114 [2022-01-31 19:17:43,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:17:43,499 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 103 transitions. [2022-01-31 19:17:43,499 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.2972972972972974) internal successors, (85), 36 states have internal predecessors, (85), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:17:43,499 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 103 transitions. [2022-01-31 19:17:43,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-01-31 19:17:43,500 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:17:43,500 INFO L514 BasicCegarLoop]: trace histogram [34, 34, 6, 6, 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] [2022-01-31 19:17:43,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-01-31 19:17:43,500 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:17:43,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:17:43,501 INFO L85 PathProgramCache]: Analyzing trace with hash -1021207700, now seen corresponding path program 34 times [2022-01-31 19:17:43,501 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:17:43,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1297529546] [2022-01-31 19:17:43,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:17:43,503 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:17:43,504 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:17:43,504 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:17:43,506 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:17:43,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:43,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:17:43,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:43,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:17:43,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:43,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-01-31 19:17:43,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:43,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-01-31 19:17:43,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:43,969 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:17:43,969 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:17:43,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1297529546] [2022-01-31 19:17:43,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1297529546] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:17:43,969 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:17:43,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [38] imperfect sequences [] total 38 [2022-01-31 19:17:43,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316662273] [2022-01-31 19:17:43,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:17:43,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-31 19:17:43,971 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:17:43,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-31 19:17:43,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2022-01-31 19:17:43,972 INFO L87 Difference]: Start difference. First operand 99 states and 103 transitions. Second operand has 38 states, 38 states have (on average 2.289473684210526) internal successors, (87), 37 states have internal predecessors, (87), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:17:44,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:17:44,562 INFO L93 Difference]: Finished difference Result 126 states and 134 transitions. [2022-01-31 19:17:44,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-31 19:17:44,562 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.289473684210526) internal successors, (87), 37 states have internal predecessors, (87), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 116 [2022-01-31 19:17:44,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:17:44,563 INFO L225 Difference]: With dead ends: 126 [2022-01-31 19:17:44,563 INFO L226 Difference]: Without dead ends: 102 [2022-01-31 19:17:44,564 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 629 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1998, Invalid=3258, Unknown=0, NotChecked=0, Total=5256 [2022-01-31 19:17:44,564 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 89 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:17:44,564 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 42 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:17:44,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2022-01-31 19:17:44,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 101. [2022-01-31 19:17:44,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 93 states have (on average 1.032258064516129) internal successors, (96), 93 states have internal predecessors, (96), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:17:44,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 105 transitions. [2022-01-31 19:17:44,575 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 105 transitions. Word has length 116 [2022-01-31 19:17:44,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:17:44,575 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 105 transitions. [2022-01-31 19:17:44,575 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.289473684210526) internal successors, (87), 37 states have internal predecessors, (87), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:17:44,576 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 105 transitions. [2022-01-31 19:17:44,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-01-31 19:17:44,576 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:17:44,576 INFO L514 BasicCegarLoop]: trace histogram [35, 35, 6, 6, 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] [2022-01-31 19:17:44,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-01-31 19:17:44,576 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:17:44,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:17:44,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1212288050, now seen corresponding path program 35 times [2022-01-31 19:17:44,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:17:44,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2109843993] [2022-01-31 19:17:44,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:17:44,579 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:17:44,579 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:17:44,579 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:17:44,581 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:17:44,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:44,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:17:44,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:44,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-01-31 19:17:44,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:44,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-01-31 19:17:44,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:44,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-01-31 19:17:44,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:44,956 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:17:44,956 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:17:44,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2109843993] [2022-01-31 19:17:44,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2109843993] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:17:44,956 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:17:44,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [39] imperfect sequences [] total 39 [2022-01-31 19:17:44,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895979002] [2022-01-31 19:17:44,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:17:44,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-01-31 19:17:44,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:17:44,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-01-31 19:17:44,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2022-01-31 19:17:44,958 INFO L87 Difference]: Start difference. First operand 101 states and 105 transitions. Second operand has 39 states, 39 states have (on average 2.282051282051282) internal successors, (89), 38 states have internal predecessors, (89), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:17:45,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:17:45,425 INFO L93 Difference]: Finished difference Result 128 states and 136 transitions. [2022-01-31 19:17:45,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-31 19:17:45,425 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.282051282051282) internal successors, (89), 38 states have internal predecessors, (89), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 118 [2022-01-31 19:17:45,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:17:45,426 INFO L225 Difference]: With dead ends: 128 [2022-01-31 19:17:45,426 INFO L226 Difference]: Without dead ends: 104 [2022-01-31 19:17:45,426 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 665 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=2109, Invalid=3441, Unknown=0, NotChecked=0, Total=5550 [2022-01-31 19:17:45,427 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 91 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:17:45,427 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 52 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:17:45,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2022-01-31 19:17:45,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 103. [2022-01-31 19:17:45,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 95 states have (on average 1.0315789473684212) internal successors, (98), 95 states have internal predecessors, (98), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:17:45,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 107 transitions. [2022-01-31 19:17:45,444 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 107 transitions. Word has length 118 [2022-01-31 19:17:45,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:17:45,444 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 107 transitions. [2022-01-31 19:17:45,444 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.282051282051282) internal successors, (89), 38 states have internal predecessors, (89), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:17:45,444 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 107 transitions. [2022-01-31 19:17:45,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-01-31 19:17:45,444 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:17:45,444 INFO L514 BasicCegarLoop]: trace histogram [36, 36, 6, 6, 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] [2022-01-31 19:17:45,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-01-31 19:17:45,445 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:17:45,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:17:45,459 INFO L85 PathProgramCache]: Analyzing trace with hash -156910672, now seen corresponding path program 36 times [2022-01-31 19:17:45,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:17:45,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [345368022] [2022-01-31 19:17:45,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:17:45,462 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:17:45,462 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:17:45,462 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:17:45,464 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:17:45,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:46,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:17:46,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:46,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-01-31 19:17:46,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:46,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-01-31 19:17:46,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:46,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 19:17:46,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:46,057 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:17:46,057 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:17:46,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [345368022] [2022-01-31 19:17:46,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [345368022] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:17:46,057 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:17:46,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [40] imperfect sequences [] total 40 [2022-01-31 19:17:46,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363991483] [2022-01-31 19:17:46,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:17:46,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-01-31 19:17:46,058 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:17:46,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-01-31 19:17:46,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2022-01-31 19:17:46,058 INFO L87 Difference]: Start difference. First operand 103 states and 107 transitions. Second operand has 40 states, 40 states have (on average 2.275) internal successors, (91), 39 states have internal predecessors, (91), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:17:46,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:17:46,534 INFO L93 Difference]: Finished difference Result 130 states and 138 transitions. [2022-01-31 19:17:46,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-01-31 19:17:46,535 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.275) internal successors, (91), 39 states have internal predecessors, (91), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 120 [2022-01-31 19:17:46,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:17:46,535 INFO L225 Difference]: With dead ends: 130 [2022-01-31 19:17:46,535 INFO L226 Difference]: Without dead ends: 106 [2022-01-31 19:17:46,536 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 702 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=2223, Invalid=3629, Unknown=0, NotChecked=0, Total=5852 [2022-01-31 19:17:46,537 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 93 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:17:46,537 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 42 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:17:46,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2022-01-31 19:17:46,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 105. [2022-01-31 19:17:46,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 97 states have (on average 1.0309278350515463) internal successors, (100), 97 states have internal predecessors, (100), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:17:46,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 109 transitions. [2022-01-31 19:17:46,553 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 109 transitions. Word has length 120 [2022-01-31 19:17:46,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:17:46,553 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 109 transitions. [2022-01-31 19:17:46,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 2.275) internal successors, (91), 39 states have internal predecessors, (91), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:17:46,554 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 109 transitions. [2022-01-31 19:17:46,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-01-31 19:17:46,554 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:17:46,554 INFO L514 BasicCegarLoop]: trace histogram [37, 37, 6, 6, 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] [2022-01-31 19:17:46,554 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-01-31 19:17:46,554 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:17:46,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:17:46,555 INFO L85 PathProgramCache]: Analyzing trace with hash 448467730, now seen corresponding path program 37 times [2022-01-31 19:17:46,555 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:17:46,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1657217860] [2022-01-31 19:17:46,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:17:46,557 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:17:46,557 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:17:46,557 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:17:46,562 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:17:46,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:47,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:17:47,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:47,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 19:17:47,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:47,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-01-31 19:17:47,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:47,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-01-31 19:17:47,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:47,052 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:17:47,052 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:17:47,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1657217860] [2022-01-31 19:17:47,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1657217860] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:17:47,053 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:17:47,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [41] imperfect sequences [] total 41 [2022-01-31 19:17:47,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182296280] [2022-01-31 19:17:47,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:17:47,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-01-31 19:17:47,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:17:47,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-01-31 19:17:47,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=782, Invalid=858, Unknown=0, NotChecked=0, Total=1640 [2022-01-31 19:17:47,054 INFO L87 Difference]: Start difference. First operand 105 states and 109 transitions. Second operand has 41 states, 41 states have (on average 2.268292682926829) internal successors, (93), 40 states have internal predecessors, (93), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:17:47,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:17:47,615 INFO L93 Difference]: Finished difference Result 132 states and 140 transitions. [2022-01-31 19:17:47,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-01-31 19:17:47,616 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.268292682926829) internal successors, (93), 40 states have internal predecessors, (93), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 122 [2022-01-31 19:17:47,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:17:47,616 INFO L225 Difference]: With dead ends: 132 [2022-01-31 19:17:47,616 INFO L226 Difference]: Without dead ends: 108 [2022-01-31 19:17:47,617 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 740 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=2340, Invalid=3822, Unknown=0, NotChecked=0, Total=6162 [2022-01-31 19:17:47,617 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 95 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:17:47,618 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 72 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:17:47,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2022-01-31 19:17:47,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 107. [2022-01-31 19:17:47,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 99 states have (on average 1.0303030303030303) internal successors, (102), 99 states have internal predecessors, (102), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:17:47,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 111 transitions. [2022-01-31 19:17:47,629 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 111 transitions. Word has length 122 [2022-01-31 19:17:47,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:17:47,629 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 111 transitions. [2022-01-31 19:17:47,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.268292682926829) internal successors, (93), 40 states have internal predecessors, (93), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:17:47,630 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 111 transitions. [2022-01-31 19:17:47,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-31 19:17:47,630 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:17:47,630 INFO L514 BasicCegarLoop]: trace histogram [38, 38, 6, 6, 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] [2022-01-31 19:17:47,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-01-31 19:17:47,630 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:17:47,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:17:47,631 INFO L85 PathProgramCache]: Analyzing trace with hash -1898440204, now seen corresponding path program 38 times [2022-01-31 19:17:47,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:17:47,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1266570998] [2022-01-31 19:17:47,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:17:47,633 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:17:47,633 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:17:47,633 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:17:47,634 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:17:47,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:48,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:17:48,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:48,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:17:48,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:48,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-01-31 19:17:48,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:48,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-01-31 19:17:48,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:48,240 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:17:48,240 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:17:48,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1266570998] [2022-01-31 19:17:48,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1266570998] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:17:48,241 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:17:48,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [42] imperfect sequences [] total 42 [2022-01-31 19:17:48,241 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922336871] [2022-01-31 19:17:48,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:17:48,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-01-31 19:17:48,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:17:48,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-01-31 19:17:48,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=822, Invalid=900, Unknown=0, NotChecked=0, Total=1722 [2022-01-31 19:17:48,243 INFO L87 Difference]: Start difference. First operand 107 states and 111 transitions. Second operand has 42 states, 42 states have (on average 2.261904761904762) internal successors, (95), 41 states have internal predecessors, (95), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:17:48,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:17:48,978 INFO L93 Difference]: Finished difference Result 134 states and 142 transitions. [2022-01-31 19:17:48,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-01-31 19:17:48,979 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.261904761904762) internal successors, (95), 41 states have internal predecessors, (95), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 124 [2022-01-31 19:17:48,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:17:48,979 INFO L225 Difference]: With dead ends: 134 [2022-01-31 19:17:48,979 INFO L226 Difference]: Without dead ends: 110 [2022-01-31 19:17:48,980 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 779 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2460, Invalid=4020, Unknown=0, NotChecked=0, Total=6480 [2022-01-31 19:17:48,986 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 97 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:17:48,987 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 62 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:17:48,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2022-01-31 19:17:48,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 109. [2022-01-31 19:17:48,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 101 states have (on average 1.0297029702970297) internal successors, (104), 101 states have internal predecessors, (104), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:17:49,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 113 transitions. [2022-01-31 19:17:49,000 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 113 transitions. Word has length 124 [2022-01-31 19:17:49,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:17:49,001 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 113 transitions. [2022-01-31 19:17:49,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.261904761904762) internal successors, (95), 41 states have internal predecessors, (95), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:17:49,001 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 113 transitions. [2022-01-31 19:17:49,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-01-31 19:17:49,002 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:17:49,002 INFO L514 BasicCegarLoop]: trace histogram [39, 39, 6, 6, 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] [2022-01-31 19:17:49,002 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-01-31 19:17:49,002 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:17:49,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:17:49,002 INFO L85 PathProgramCache]: Analyzing trace with hash 1875832918, now seen corresponding path program 39 times [2022-01-31 19:17:49,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:17:49,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [878733280] [2022-01-31 19:17:49,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:17:49,004 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:17:49,004 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:17:49,005 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:17:49,006 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:17:49,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:49,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:17:49,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:49,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-01-31 19:17:49,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:49,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-01-31 19:17:49,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:49,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-01-31 19:17:49,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:49,702 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:17:49,702 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:17:49,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [878733280] [2022-01-31 19:17:49,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [878733280] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:17:49,702 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:17:49,703 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [43] imperfect sequences [] total 43 [2022-01-31 19:17:49,703 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589463214] [2022-01-31 19:17:49,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:17:49,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-01-31 19:17:49,703 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:17:49,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-01-31 19:17:49,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=863, Invalid=943, Unknown=0, NotChecked=0, Total=1806 [2022-01-31 19:17:49,704 INFO L87 Difference]: Start difference. First operand 109 states and 113 transitions. Second operand has 43 states, 43 states have (on average 2.255813953488372) internal successors, (97), 42 states have internal predecessors, (97), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:17:50,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:17:50,324 INFO L93 Difference]: Finished difference Result 136 states and 144 transitions. [2022-01-31 19:17:50,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-01-31 19:17:50,325 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.255813953488372) internal successors, (97), 42 states have internal predecessors, (97), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 126 [2022-01-31 19:17:50,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:17:50,326 INFO L225 Difference]: With dead ends: 136 [2022-01-31 19:17:50,326 INFO L226 Difference]: Without dead ends: 112 [2022-01-31 19:17:50,336 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 819 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=2583, Invalid=4223, Unknown=0, NotChecked=0, Total=6806 [2022-01-31 19:17:50,336 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 99 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:17:50,345 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 52 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:17:50,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2022-01-31 19:17:50,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 111. [2022-01-31 19:17:50,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 103 states have (on average 1.029126213592233) internal successors, (106), 103 states have internal predecessors, (106), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:17:50,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 115 transitions. [2022-01-31 19:17:50,363 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 115 transitions. Word has length 126 [2022-01-31 19:17:50,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:17:50,363 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 115 transitions. [2022-01-31 19:17:50,363 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.255813953488372) internal successors, (97), 42 states have internal predecessors, (97), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:17:50,363 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 115 transitions. [2022-01-31 19:17:50,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-01-31 19:17:50,364 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:17:50,364 INFO L514 BasicCegarLoop]: trace histogram [40, 40, 6, 6, 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] [2022-01-31 19:17:50,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-01-31 19:17:50,365 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:17:50,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:17:50,365 INFO L85 PathProgramCache]: Analyzing trace with hash -295061960, now seen corresponding path program 40 times [2022-01-31 19:17:50,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:17:50,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [931654501] [2022-01-31 19:17:50,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:17:50,367 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:17:50,367 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:17:50,367 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:17:50,369 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:17:50,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:51,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:17:51,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:51,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-31 19:17:51,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:51,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-01-31 19:17:51,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:51,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 19:17:51,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:51,113 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:17:51,113 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:17:51,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [931654501] [2022-01-31 19:17:51,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [931654501] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:17:51,113 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:17:51,113 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [44] imperfect sequences [] total 44 [2022-01-31 19:17:51,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473590968] [2022-01-31 19:17:51,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:17:51,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-01-31 19:17:51,113 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:17:51,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-01-31 19:17:51,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=905, Invalid=987, Unknown=0, NotChecked=0, Total=1892 [2022-01-31 19:17:51,114 INFO L87 Difference]: Start difference. First operand 111 states and 115 transitions. Second operand has 44 states, 44 states have (on average 2.25) internal successors, (99), 43 states have internal predecessors, (99), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:17:51,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:17:51,959 INFO L93 Difference]: Finished difference Result 138 states and 146 transitions. [2022-01-31 19:17:51,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-01-31 19:17:51,959 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.25) internal successors, (99), 43 states have internal predecessors, (99), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 128 [2022-01-31 19:17:51,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:17:51,960 INFO L225 Difference]: With dead ends: 138 [2022-01-31 19:17:51,960 INFO L226 Difference]: Without dead ends: 114 [2022-01-31 19:17:51,961 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 860 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=2709, Invalid=4431, Unknown=0, NotChecked=0, Total=7140 [2022-01-31 19:17:51,962 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 101 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:17:51,962 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 42 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:17:51,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2022-01-31 19:17:51,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 113. [2022-01-31 19:17:51,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 105 states have (on average 1.0285714285714285) internal successors, (108), 105 states have internal predecessors, (108), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:17:51,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 117 transitions. [2022-01-31 19:17:51,983 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 117 transitions. Word has length 128 [2022-01-31 19:17:51,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:17:51,983 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 117 transitions. [2022-01-31 19:17:51,983 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.25) internal successors, (99), 43 states have internal predecessors, (99), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:17:51,983 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 117 transitions. [2022-01-31 19:17:51,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-01-31 19:17:51,984 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:17:51,984 INFO L514 BasicCegarLoop]: trace histogram [41, 41, 6, 6, 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] [2022-01-31 19:17:51,984 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-01-31 19:17:51,984 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:17:51,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:17:51,984 INFO L85 PathProgramCache]: Analyzing trace with hash 829066138, now seen corresponding path program 41 times [2022-01-31 19:17:51,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:17:51,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [796448618] [2022-01-31 19:17:51,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:17:51,987 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:17:51,987 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:17:51,987 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:17:51,989 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:17:52,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:52,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:17:52,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:52,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-01-31 19:17:52,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:52,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-01-31 19:17:52,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:52,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-01-31 19:17:52,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:52,604 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:17:52,604 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:17:52,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [796448618] [2022-01-31 19:17:52,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [796448618] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:17:52,604 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:17:52,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [45] imperfect sequences [] total 45 [2022-01-31 19:17:52,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785378402] [2022-01-31 19:17:52,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:17:52,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-01-31 19:17:52,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:17:52,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-01-31 19:17:52,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=948, Invalid=1032, Unknown=0, NotChecked=0, Total=1980 [2022-01-31 19:17:52,606 INFO L87 Difference]: Start difference. First operand 113 states and 117 transitions. Second operand has 45 states, 45 states have (on average 2.2444444444444445) internal successors, (101), 44 states have internal predecessors, (101), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:17:53,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:17:53,473 INFO L93 Difference]: Finished difference Result 140 states and 148 transitions. [2022-01-31 19:17:53,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-31 19:17:53,473 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.2444444444444445) internal successors, (101), 44 states have internal predecessors, (101), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 130 [2022-01-31 19:17:53,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:17:53,474 INFO L225 Difference]: With dead ends: 140 [2022-01-31 19:17:53,474 INFO L226 Difference]: Without dead ends: 116 [2022-01-31 19:17:53,475 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 902 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=2838, Invalid=4644, Unknown=0, NotChecked=0, Total=7482 [2022-01-31 19:17:53,475 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 103 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:17:53,475 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 42 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:17:53,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2022-01-31 19:17:53,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 115. [2022-01-31 19:17:53,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 107 states have (on average 1.02803738317757) internal successors, (110), 107 states have internal predecessors, (110), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:17:53,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 119 transitions. [2022-01-31 19:17:53,491 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 119 transitions. Word has length 130 [2022-01-31 19:17:53,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:17:53,491 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 119 transitions. [2022-01-31 19:17:53,491 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.2444444444444445) internal successors, (101), 44 states have internal predecessors, (101), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:17:53,491 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 119 transitions. [2022-01-31 19:17:53,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-01-31 19:17:53,492 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:17:53,492 INFO L514 BasicCegarLoop]: trace histogram [42, 42, 6, 6, 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] [2022-01-31 19:17:53,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-01-31 19:17:53,492 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:17:53,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:17:53,493 INFO L85 PathProgramCache]: Analyzing trace with hash -1215590276, now seen corresponding path program 42 times [2022-01-31 19:17:53,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:17:53,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [661917536] [2022-01-31 19:17:53,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:17:53,494 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:17:53,495 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:17:53,495 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:17:53,497 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:17:53,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:54,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:17:54,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:54,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 19:17:54,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:54,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-01-31 19:17:54,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:54,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-01-31 19:17:54,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:54,184 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:17:54,184 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:17:54,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [661917536] [2022-01-31 19:17:54,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [661917536] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:17:54,184 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:17:54,184 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [46] imperfect sequences [] total 46 [2022-01-31 19:17:54,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999202539] [2022-01-31 19:17:54,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:17:54,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-01-31 19:17:54,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:17:54,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-01-31 19:17:54,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=992, Invalid=1078, Unknown=0, NotChecked=0, Total=2070 [2022-01-31 19:17:54,186 INFO L87 Difference]: Start difference. First operand 115 states and 119 transitions. Second operand has 46 states, 46 states have (on average 2.239130434782609) internal successors, (103), 45 states have internal predecessors, (103), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:17:54,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:17:54,825 INFO L93 Difference]: Finished difference Result 142 states and 150 transitions. [2022-01-31 19:17:54,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-31 19:17:54,826 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 2.239130434782609) internal successors, (103), 45 states have internal predecessors, (103), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 132 [2022-01-31 19:17:54,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:17:54,826 INFO L225 Difference]: With dead ends: 142 [2022-01-31 19:17:54,826 INFO L226 Difference]: Without dead ends: 118 [2022-01-31 19:17:54,827 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 945 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2970, Invalid=4862, Unknown=0, NotChecked=0, Total=7832 [2022-01-31 19:17:54,828 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 105 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:17:54,828 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 52 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:17:54,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2022-01-31 19:17:54,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 117. [2022-01-31 19:17:54,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 109 states have (on average 1.0275229357798166) internal successors, (112), 109 states have internal predecessors, (112), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:17:54,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 121 transitions. [2022-01-31 19:17:54,845 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 121 transitions. Word has length 132 [2022-01-31 19:17:54,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:17:54,845 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 121 transitions. [2022-01-31 19:17:54,846 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 2.239130434782609) internal successors, (103), 45 states have internal predecessors, (103), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:17:54,846 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 121 transitions. [2022-01-31 19:17:54,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-01-31 19:17:54,849 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:17:54,849 INFO L514 BasicCegarLoop]: trace histogram [43, 43, 6, 6, 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] [2022-01-31 19:17:54,849 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-01-31 19:17:54,849 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:17:54,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:17:54,849 INFO L85 PathProgramCache]: Analyzing trace with hash 964617438, now seen corresponding path program 43 times [2022-01-31 19:17:54,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:17:54,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [368450931] [2022-01-31 19:17:54,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:17:54,852 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:17:54,852 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:17:54,852 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:17:54,854 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:17:54,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:55,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:17:55,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:55,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-01-31 19:17:55,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:55,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-01-31 19:17:55,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:55,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-01-31 19:17:55,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:55,552 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:17:55,552 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:17:55,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [368450931] [2022-01-31 19:17:55,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [368450931] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:17:55,552 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:17:55,552 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [47] imperfect sequences [] total 47 [2022-01-31 19:17:55,553 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771149655] [2022-01-31 19:17:55,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:17:55,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-01-31 19:17:55,553 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:17:55,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-01-31 19:17:55,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1037, Invalid=1125, Unknown=0, NotChecked=0, Total=2162 [2022-01-31 19:17:55,554 INFO L87 Difference]: Start difference. First operand 117 states and 121 transitions. Second operand has 47 states, 47 states have (on average 2.234042553191489) internal successors, (105), 46 states have internal predecessors, (105), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:17:56,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:17:56,409 INFO L93 Difference]: Finished difference Result 144 states and 152 transitions. [2022-01-31 19:17:56,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-01-31 19:17:56,409 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 2.234042553191489) internal successors, (105), 46 states have internal predecessors, (105), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 134 [2022-01-31 19:17:56,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:17:56,410 INFO L225 Difference]: With dead ends: 144 [2022-01-31 19:17:56,410 INFO L226 Difference]: Without dead ends: 120 [2022-01-31 19:17:56,411 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 989 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=3105, Invalid=5085, Unknown=0, NotChecked=0, Total=8190 [2022-01-31 19:17:56,411 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 107 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:17:56,411 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 47 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:17:56,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2022-01-31 19:17:56,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 119. [2022-01-31 19:17:56,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 111 states have (on average 1.027027027027027) internal successors, (114), 111 states have internal predecessors, (114), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:17:56,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 123 transitions. [2022-01-31 19:17:56,438 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 123 transitions. Word has length 134 [2022-01-31 19:17:56,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:17:56,438 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 123 transitions. [2022-01-31 19:17:56,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 2.234042553191489) internal successors, (105), 46 states have internal predecessors, (105), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:17:56,438 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 123 transitions. [2022-01-31 19:17:56,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-01-31 19:17:56,440 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:17:56,440 INFO L514 BasicCegarLoop]: trace histogram [44, 44, 6, 6, 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] [2022-01-31 19:17:56,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-01-31 19:17:56,440 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:17:56,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:17:56,441 INFO L85 PathProgramCache]: Analyzing trace with hash 200190144, now seen corresponding path program 44 times [2022-01-31 19:17:56,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:17:56,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [439298296] [2022-01-31 19:17:56,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:17:56,456 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:17:56,456 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:17:56,456 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:17:56,458 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:17:56,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:57,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:17:57,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:57,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-31 19:17:57,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:57,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-01-31 19:17:57,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:57,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 19:17:57,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:57,240 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:17:57,240 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:17:57,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [439298296] [2022-01-31 19:17:57,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [439298296] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:17:57,240 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:17:57,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [48] imperfect sequences [] total 48 [2022-01-31 19:17:57,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838031157] [2022-01-31 19:17:57,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:17:57,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-01-31 19:17:57,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:17:57,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-01-31 19:17:57,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1083, Invalid=1173, Unknown=0, NotChecked=0, Total=2256 [2022-01-31 19:17:57,241 INFO L87 Difference]: Start difference. First operand 119 states and 123 transitions. Second operand has 48 states, 48 states have (on average 2.2291666666666665) internal successors, (107), 47 states have internal predecessors, (107), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:17:57,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:17:57,998 INFO L93 Difference]: Finished difference Result 146 states and 154 transitions. [2022-01-31 19:17:57,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-01-31 19:17:57,998 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 2.2291666666666665) internal successors, (107), 47 states have internal predecessors, (107), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 136 [2022-01-31 19:17:57,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:17:57,999 INFO L225 Difference]: With dead ends: 146 [2022-01-31 19:17:57,999 INFO L226 Difference]: Without dead ends: 122 [2022-01-31 19:17:58,000 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1034 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=3243, Invalid=5313, Unknown=0, NotChecked=0, Total=8556 [2022-01-31 19:17:58,000 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 109 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:17:58,001 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 67 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:17:58,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2022-01-31 19:17:58,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 121. [2022-01-31 19:17:58,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 113 states have (on average 1.0265486725663717) internal successors, (116), 113 states have internal predecessors, (116), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:17:58,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 125 transitions. [2022-01-31 19:17:58,017 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 125 transitions. Word has length 136 [2022-01-31 19:17:58,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:17:58,017 INFO L470 AbstractCegarLoop]: Abstraction has 121 states and 125 transitions. [2022-01-31 19:17:58,017 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 2.2291666666666665) internal successors, (107), 47 states have internal predecessors, (107), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:17:58,017 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 125 transitions. [2022-01-31 19:17:58,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-01-31 19:17:58,018 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:17:58,018 INFO L514 BasicCegarLoop]: trace histogram [45, 45, 6, 6, 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] [2022-01-31 19:17:58,018 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-01-31 19:17:58,018 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:17:58,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:17:58,018 INFO L85 PathProgramCache]: Analyzing trace with hash 24968226, now seen corresponding path program 45 times [2022-01-31 19:17:58,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:17:58,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1795375906] [2022-01-31 19:17:58,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:17:58,020 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:17:58,020 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:17:58,020 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:17:58,022 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:17:58,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:58,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:17:58,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:58,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-01-31 19:17:58,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:58,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-01-31 19:17:58,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:58,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-01-31 19:17:58,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:17:58,774 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:17:58,774 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:17:58,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1795375906] [2022-01-31 19:17:58,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1795375906] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:17:58,775 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:17:58,775 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [49] imperfect sequences [] total 49 [2022-01-31 19:17:58,775 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133825202] [2022-01-31 19:17:58,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:17:58,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-01-31 19:17:58,775 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:17:58,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-01-31 19:17:58,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1130, Invalid=1222, Unknown=0, NotChecked=0, Total=2352 [2022-01-31 19:17:58,776 INFO L87 Difference]: Start difference. First operand 121 states and 125 transitions. Second operand has 49 states, 49 states have (on average 2.2244897959183674) internal successors, (109), 48 states have internal predecessors, (109), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:17:59,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:17:59,553 INFO L93 Difference]: Finished difference Result 148 states and 156 transitions. [2022-01-31 19:17:59,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-31 19:17:59,554 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.2244897959183674) internal successors, (109), 48 states have internal predecessors, (109), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 138 [2022-01-31 19:17:59,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:17:59,554 INFO L225 Difference]: With dead ends: 148 [2022-01-31 19:17:59,554 INFO L226 Difference]: Without dead ends: 124 [2022-01-31 19:17:59,556 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1080 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=3384, Invalid=5546, Unknown=0, NotChecked=0, Total=8930 [2022-01-31 19:17:59,556 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 111 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:17:59,556 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 37 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:17:59,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2022-01-31 19:17:59,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 123. [2022-01-31 19:17:59,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 115 states have (on average 1.0260869565217392) internal successors, (118), 115 states have internal predecessors, (118), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:17:59,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 127 transitions. [2022-01-31 19:17:59,574 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 127 transitions. Word has length 138 [2022-01-31 19:17:59,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:17:59,575 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 127 transitions. [2022-01-31 19:17:59,575 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.2244897959183674) internal successors, (109), 48 states have internal predecessors, (109), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:17:59,575 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 127 transitions. [2022-01-31 19:17:59,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-01-31 19:17:59,575 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:17:59,575 INFO L514 BasicCegarLoop]: trace histogram [46, 46, 6, 6, 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] [2022-01-31 19:17:59,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-01-31 19:17:59,576 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:17:59,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:17:59,576 INFO L85 PathProgramCache]: Analyzing trace with hash -859570428, now seen corresponding path program 46 times [2022-01-31 19:17:59,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:17:59,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [86358081] [2022-01-31 19:17:59,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:17:59,578 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:17:59,578 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:17:59,579 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:17:59,581 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:17:59,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:00,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:18:00,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:00,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 19:18:00,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:00,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-01-31 19:18:00,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:00,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 19:18:00,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:00,153 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:18:00,153 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:18:00,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [86358081] [2022-01-31 19:18:00,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [86358081] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:18:00,153 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:18:00,153 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [50] imperfect sequences [] total 50 [2022-01-31 19:18:00,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246900350] [2022-01-31 19:18:00,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:18:00,154 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-01-31 19:18:00,154 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:18:00,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-01-31 19:18:00,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1178, Invalid=1272, Unknown=0, NotChecked=0, Total=2450 [2022-01-31 19:18:00,155 INFO L87 Difference]: Start difference. First operand 123 states and 127 transitions. Second operand has 50 states, 50 states have (on average 2.22) internal successors, (111), 49 states have internal predecessors, (111), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:18:00,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:18:00,834 INFO L93 Difference]: Finished difference Result 150 states and 158 transitions. [2022-01-31 19:18:00,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-01-31 19:18:00,834 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 2.22) internal successors, (111), 49 states have internal predecessors, (111), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 140 [2022-01-31 19:18:00,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:18:00,863 INFO L225 Difference]: With dead ends: 150 [2022-01-31 19:18:00,863 INFO L226 Difference]: Without dead ends: 126 [2022-01-31 19:18:00,865 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1127 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=3528, Invalid=5784, Unknown=0, NotChecked=0, Total=9312 [2022-01-31 19:18:00,865 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 113 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:18:00,865 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 47 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:18:00,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2022-01-31 19:18:00,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 125. [2022-01-31 19:18:00,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 117 states have (on average 1.0256410256410255) internal successors, (120), 117 states have internal predecessors, (120), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:18:00,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 129 transitions. [2022-01-31 19:18:00,905 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 129 transitions. Word has length 140 [2022-01-31 19:18:00,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:18:00,906 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 129 transitions. [2022-01-31 19:18:00,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 2.22) internal successors, (111), 49 states have internal predecessors, (111), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:18:00,906 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 129 transitions. [2022-01-31 19:18:00,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-01-31 19:18:00,906 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:18:00,906 INFO L514 BasicCegarLoop]: trace histogram [47, 47, 6, 6, 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] [2022-01-31 19:18:00,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-01-31 19:18:00,907 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:18:00,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:18:00,907 INFO L85 PathProgramCache]: Analyzing trace with hash -497692314, now seen corresponding path program 47 times [2022-01-31 19:18:00,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:18:00,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1112474455] [2022-01-31 19:18:00,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:18:00,908 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:18:00,908 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:18:00,908 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:18:00,910 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:18:00,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:01,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:18:01,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:01,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-01-31 19:18:01,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:01,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-01-31 19:18:01,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:01,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-01-31 19:18:01,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:01,872 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:18:01,873 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:18:01,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1112474455] [2022-01-31 19:18:01,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1112474455] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:18:01,873 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:18:01,873 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [51] imperfect sequences [] total 51 [2022-01-31 19:18:01,873 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123899057] [2022-01-31 19:18:01,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:18:01,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-01-31 19:18:01,873 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:18:01,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-01-31 19:18:01,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1227, Invalid=1323, Unknown=0, NotChecked=0, Total=2550 [2022-01-31 19:18:01,875 INFO L87 Difference]: Start difference. First operand 125 states and 129 transitions. Second operand has 51 states, 51 states have (on average 2.215686274509804) internal successors, (113), 50 states have internal predecessors, (113), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:18:02,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:18:02,877 INFO L93 Difference]: Finished difference Result 152 states and 160 transitions. [2022-01-31 19:18:02,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-01-31 19:18:02,877 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 2.215686274509804) internal successors, (113), 50 states have internal predecessors, (113), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 142 [2022-01-31 19:18:02,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:18:02,878 INFO L225 Difference]: With dead ends: 152 [2022-01-31 19:18:02,878 INFO L226 Difference]: Without dead ends: 128 [2022-01-31 19:18:02,880 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1175 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=3675, Invalid=6027, Unknown=0, NotChecked=0, Total=9702 [2022-01-31 19:18:02,880 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 115 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:18:02,880 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [118 Valid, 47 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:18:02,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2022-01-31 19:18:02,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 127. [2022-01-31 19:18:02,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 119 states have (on average 1.0252100840336134) internal successors, (122), 119 states have internal predecessors, (122), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:18:02,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 131 transitions. [2022-01-31 19:18:02,899 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 131 transitions. Word has length 142 [2022-01-31 19:18:02,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:18:02,899 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 131 transitions. [2022-01-31 19:18:02,899 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 2.215686274509804) internal successors, (113), 50 states have internal predecessors, (113), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:18:02,899 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 131 transitions. [2022-01-31 19:18:02,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-01-31 19:18:02,900 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:18:02,900 INFO L514 BasicCegarLoop]: trace histogram [48, 48, 6, 6, 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] [2022-01-31 19:18:02,900 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-01-31 19:18:02,900 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:18:02,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:18:02,900 INFO L85 PathProgramCache]: Analyzing trace with hash -625175736, now seen corresponding path program 48 times [2022-01-31 19:18:02,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:18:02,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1573654668] [2022-01-31 19:18:02,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:18:02,902 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:18:02,902 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:18:02,902 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:18:02,904 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:18:02,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:03,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:18:03,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:03,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-01-31 19:18:03,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:03,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-01-31 19:18:03,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:03,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 19:18:03,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:03,686 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:18:03,686 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:18:03,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1573654668] [2022-01-31 19:18:03,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1573654668] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:18:03,686 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:18:03,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [] total 52 [2022-01-31 19:18:03,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785683888] [2022-01-31 19:18:03,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:18:03,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-01-31 19:18:03,687 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:18:03,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-01-31 19:18:03,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1277, Invalid=1375, Unknown=0, NotChecked=0, Total=2652 [2022-01-31 19:18:03,688 INFO L87 Difference]: Start difference. First operand 127 states and 131 transitions. Second operand has 52 states, 52 states have (on average 2.2115384615384617) internal successors, (115), 51 states have internal predecessors, (115), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:18:04,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:18:04,627 INFO L93 Difference]: Finished difference Result 154 states and 162 transitions. [2022-01-31 19:18:04,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-01-31 19:18:04,628 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 2.2115384615384617) internal successors, (115), 51 states have internal predecessors, (115), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 144 [2022-01-31 19:18:04,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:18:04,628 INFO L225 Difference]: With dead ends: 154 [2022-01-31 19:18:04,628 INFO L226 Difference]: Without dead ends: 130 [2022-01-31 19:18:04,629 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1224 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=3825, Invalid=6275, Unknown=0, NotChecked=0, Total=10100 [2022-01-31 19:18:04,630 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 117 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:18:04,630 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [120 Valid, 57 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:18:04,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2022-01-31 19:18:04,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 129. [2022-01-31 19:18:04,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 121 states have (on average 1.024793388429752) internal successors, (124), 121 states have internal predecessors, (124), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:18:04,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 133 transitions. [2022-01-31 19:18:04,647 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 133 transitions. Word has length 144 [2022-01-31 19:18:04,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:18:04,647 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 133 transitions. [2022-01-31 19:18:04,647 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 2.2115384615384617) internal successors, (115), 51 states have internal predecessors, (115), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:18:04,647 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 133 transitions. [2022-01-31 19:18:04,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-01-31 19:18:04,648 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:18:04,648 INFO L514 BasicCegarLoop]: trace histogram [49, 49, 6, 6, 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] [2022-01-31 19:18:04,648 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-01-31 19:18:04,648 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:18:04,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:18:04,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1417307306, now seen corresponding path program 49 times [2022-01-31 19:18:04,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:18:04,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [548065124] [2022-01-31 19:18:04,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:18:04,650 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:18:04,650 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:18:04,650 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:18:04,653 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:18:04,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:05,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:18:05,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:05,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-01-31 19:18:05,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:05,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-01-31 19:18:05,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:05,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-01-31 19:18:05,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:05,695 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:18:05,696 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:18:05,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [548065124] [2022-01-31 19:18:05,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [548065124] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:18:05,696 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:18:05,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [53] imperfect sequences [] total 53 [2022-01-31 19:18:05,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663873370] [2022-01-31 19:18:05,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:18:05,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-01-31 19:18:05,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:18:05,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-01-31 19:18:05,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1328, Invalid=1428, Unknown=0, NotChecked=0, Total=2756 [2022-01-31 19:18:05,697 INFO L87 Difference]: Start difference. First operand 129 states and 133 transitions. Second operand has 53 states, 53 states have (on average 2.207547169811321) internal successors, (117), 52 states have internal predecessors, (117), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:18:06,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:18:06,682 INFO L93 Difference]: Finished difference Result 156 states and 164 transitions. [2022-01-31 19:18:06,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-01-31 19:18:06,683 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.207547169811321) internal successors, (117), 52 states have internal predecessors, (117), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 146 [2022-01-31 19:18:06,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:18:06,683 INFO L225 Difference]: With dead ends: 156 [2022-01-31 19:18:06,683 INFO L226 Difference]: Without dead ends: 132 [2022-01-31 19:18:06,684 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1274 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=3978, Invalid=6528, Unknown=0, NotChecked=0, Total=10506 [2022-01-31 19:18:06,685 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 119 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:18:06,685 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 42 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:18:06,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2022-01-31 19:18:06,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 131. [2022-01-31 19:18:06,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 123 states have (on average 1.024390243902439) internal successors, (126), 123 states have internal predecessors, (126), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:18:06,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 135 transitions. [2022-01-31 19:18:06,704 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 135 transitions. Word has length 146 [2022-01-31 19:18:06,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:18:06,704 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 135 transitions. [2022-01-31 19:18:06,704 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.207547169811321) internal successors, (117), 52 states have internal predecessors, (117), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:18:06,704 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 135 transitions. [2022-01-31 19:18:06,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-01-31 19:18:06,705 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:18:06,705 INFO L514 BasicCegarLoop]: trace histogram [50, 50, 6, 6, 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] [2022-01-31 19:18:06,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-01-31 19:18:06,705 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:18:06,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:18:06,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1443456396, now seen corresponding path program 50 times [2022-01-31 19:18:06,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:18:06,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1733706264] [2022-01-31 19:18:06,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:18:06,708 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:18:06,708 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:18:06,708 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:18:06,710 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:18:06,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:07,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:18:07,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:07,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 19:18:07,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:07,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-01-31 19:18:07,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:07,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-01-31 19:18:07,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:07,483 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:18:07,483 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:18:07,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1733706264] [2022-01-31 19:18:07,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1733706264] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:18:07,483 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:18:07,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [54] imperfect sequences [] total 54 [2022-01-31 19:18:07,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391097000] [2022-01-31 19:18:07,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:18:07,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-01-31 19:18:07,484 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:18:07,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-01-31 19:18:07,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1380, Invalid=1482, Unknown=0, NotChecked=0, Total=2862 [2022-01-31 19:18:07,485 INFO L87 Difference]: Start difference. First operand 131 states and 135 transitions. Second operand has 54 states, 54 states have (on average 2.2037037037037037) internal successors, (119), 53 states have internal predecessors, (119), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:18:08,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:18:08,328 INFO L93 Difference]: Finished difference Result 158 states and 166 transitions. [2022-01-31 19:18:08,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-01-31 19:18:08,329 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.2037037037037037) internal successors, (119), 53 states have internal predecessors, (119), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 148 [2022-01-31 19:18:08,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:18:08,329 INFO L225 Difference]: With dead ends: 158 [2022-01-31 19:18:08,329 INFO L226 Difference]: Without dead ends: 134 [2022-01-31 19:18:08,331 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1325 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=4134, Invalid=6786, Unknown=0, NotChecked=0, Total=10920 [2022-01-31 19:18:08,331 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 121 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:18:08,331 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 42 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:18:08,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2022-01-31 19:18:08,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 133. [2022-01-31 19:18:08,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 125 states have (on average 1.024) internal successors, (128), 125 states have internal predecessors, (128), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:18:08,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 137 transitions. [2022-01-31 19:18:08,382 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 137 transitions. Word has length 148 [2022-01-31 19:18:08,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:18:08,383 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 137 transitions. [2022-01-31 19:18:08,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.2037037037037037) internal successors, (119), 53 states have internal predecessors, (119), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:18:08,383 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 137 transitions. [2022-01-31 19:18:08,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-01-31 19:18:08,383 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:18:08,383 INFO L514 BasicCegarLoop]: trace histogram [51, 51, 6, 6, 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] [2022-01-31 19:18:08,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-01-31 19:18:08,384 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:18:08,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:18:08,384 INFO L85 PathProgramCache]: Analyzing trace with hash 802928110, now seen corresponding path program 51 times [2022-01-31 19:18:08,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:18:08,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1236104107] [2022-01-31 19:18:08,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:18:08,400 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:18:08,400 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:18:08,401 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:18:08,403 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:18:08,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:09,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:18:09,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:09,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-01-31 19:18:09,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:09,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-01-31 19:18:09,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:09,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-01-31 19:18:09,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:09,236 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:18:09,236 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:18:09,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1236104107] [2022-01-31 19:18:09,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1236104107] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:18:09,237 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:18:09,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [55] imperfect sequences [] total 55 [2022-01-31 19:18:09,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79814059] [2022-01-31 19:18:09,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:18:09,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-01-31 19:18:09,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:18:09,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-01-31 19:18:09,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1433, Invalid=1537, Unknown=0, NotChecked=0, Total=2970 [2022-01-31 19:18:09,239 INFO L87 Difference]: Start difference. First operand 133 states and 137 transitions. Second operand has 55 states, 55 states have (on average 2.2) internal successors, (121), 54 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:18:10,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:18:10,145 INFO L93 Difference]: Finished difference Result 160 states and 168 transitions. [2022-01-31 19:18:10,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-01-31 19:18:10,146 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.2) internal successors, (121), 54 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 150 [2022-01-31 19:18:10,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:18:10,146 INFO L225 Difference]: With dead ends: 160 [2022-01-31 19:18:10,146 INFO L226 Difference]: Without dead ends: 136 [2022-01-31 19:18:10,148 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1377 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=4293, Invalid=7049, Unknown=0, NotChecked=0, Total=11342 [2022-01-31 19:18:10,148 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 123 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:18:10,149 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 52 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:18:10,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2022-01-31 19:18:10,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 135. [2022-01-31 19:18:10,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 127 states have (on average 1.0236220472440944) internal successors, (130), 127 states have internal predecessors, (130), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:18:10,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 139 transitions. [2022-01-31 19:18:10,168 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 139 transitions. Word has length 150 [2022-01-31 19:18:10,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:18:10,169 INFO L470 AbstractCegarLoop]: Abstraction has 135 states and 139 transitions. [2022-01-31 19:18:10,169 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 2.2) internal successors, (121), 54 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:18:10,169 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 139 transitions. [2022-01-31 19:18:10,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-01-31 19:18:10,169 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:18:10,169 INFO L514 BasicCegarLoop]: trace histogram [52, 52, 6, 6, 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] [2022-01-31 19:18:10,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-01-31 19:18:10,170 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:18:10,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:18:10,170 INFO L85 PathProgramCache]: Analyzing trace with hash -564431408, now seen corresponding path program 52 times [2022-01-31 19:18:10,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:18:10,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1395596714] [2022-01-31 19:18:10,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:18:10,171 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:18:10,172 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:18:10,172 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:18:10,174 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:18:10,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:11,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:18:11,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:11,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-01-31 19:18:11,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:11,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-01-31 19:18:11,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:11,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 19:18:11,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:11,132 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:18:11,132 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:18:11,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1395596714] [2022-01-31 19:18:11,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1395596714] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:18:11,133 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:18:11,133 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [56] imperfect sequences [] total 56 [2022-01-31 19:18:11,133 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491759488] [2022-01-31 19:18:11,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:18:11,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-01-31 19:18:11,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:18:11,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-01-31 19:18:11,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1487, Invalid=1593, Unknown=0, NotChecked=0, Total=3080 [2022-01-31 19:18:11,134 INFO L87 Difference]: Start difference. First operand 135 states and 139 transitions. Second operand has 56 states, 56 states have (on average 2.1964285714285716) internal successors, (123), 55 states have internal predecessors, (123), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:18:12,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:18:12,336 INFO L93 Difference]: Finished difference Result 162 states and 170 transitions. [2022-01-31 19:18:12,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-01-31 19:18:12,337 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 2.1964285714285716) internal successors, (123), 55 states have internal predecessors, (123), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 152 [2022-01-31 19:18:12,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:18:12,337 INFO L225 Difference]: With dead ends: 162 [2022-01-31 19:18:12,338 INFO L226 Difference]: Without dead ends: 138 [2022-01-31 19:18:12,339 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1430 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=4455, Invalid=7317, Unknown=0, NotChecked=0, Total=11772 [2022-01-31 19:18:12,339 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 125 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:18:12,340 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [128 Valid, 57 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:18:12,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2022-01-31 19:18:12,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 137. [2022-01-31 19:18:12,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 129 states have (on average 1.0232558139534884) internal successors, (132), 129 states have internal predecessors, (132), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:18:12,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 141 transitions. [2022-01-31 19:18:12,362 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 141 transitions. Word has length 152 [2022-01-31 19:18:12,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:18:12,362 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 141 transitions. [2022-01-31 19:18:12,362 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 2.1964285714285716) internal successors, (123), 55 states have internal predecessors, (123), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:18:12,362 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 141 transitions. [2022-01-31 19:18:12,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-01-31 19:18:12,363 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:18:12,364 INFO L514 BasicCegarLoop]: trace histogram [53, 53, 6, 6, 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] [2022-01-31 19:18:12,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-01-31 19:18:12,364 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:18:12,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:18:12,364 INFO L85 PathProgramCache]: Analyzing trace with hash -336935630, now seen corresponding path program 53 times [2022-01-31 19:18:12,364 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:18:12,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1869422877] [2022-01-31 19:18:12,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:18:12,368 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:18:12,368 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:18:12,368 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:18:12,370 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:18:12,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:13,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:18:13,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:13,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-01-31 19:18:13,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:13,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-01-31 19:18:13,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:13,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-31 19:18:13,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:13,660 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:18:13,660 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:18:13,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1869422877] [2022-01-31 19:18:13,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1869422877] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:18:13,660 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:18:13,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [57] imperfect sequences [] total 57 [2022-01-31 19:18:13,660 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731610321] [2022-01-31 19:18:13,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:18:13,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-01-31 19:18:13,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:18:13,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-01-31 19:18:13,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1542, Invalid=1650, Unknown=0, NotChecked=0, Total=3192 [2022-01-31 19:18:13,662 INFO L87 Difference]: Start difference. First operand 137 states and 141 transitions. Second operand has 57 states, 57 states have (on average 2.192982456140351) internal successors, (125), 56 states have internal predecessors, (125), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:18:14,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:18:14,676 INFO L93 Difference]: Finished difference Result 164 states and 172 transitions. [2022-01-31 19:18:14,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-01-31 19:18:14,676 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 2.192982456140351) internal successors, (125), 56 states have internal predecessors, (125), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 154 [2022-01-31 19:18:14,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:18:14,677 INFO L225 Difference]: With dead ends: 164 [2022-01-31 19:18:14,677 INFO L226 Difference]: Without dead ends: 140 [2022-01-31 19:18:14,679 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1484 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=4620, Invalid=7590, Unknown=0, NotChecked=0, Total=12210 [2022-01-31 19:18:14,679 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 127 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:18:14,679 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [130 Valid, 57 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:18:14,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2022-01-31 19:18:14,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 139. [2022-01-31 19:18:14,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 131 states have (on average 1.0229007633587786) internal successors, (134), 131 states have internal predecessors, (134), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:18:14,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 143 transitions. [2022-01-31 19:18:14,701 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 143 transitions. Word has length 154 [2022-01-31 19:18:14,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:18:14,701 INFO L470 AbstractCegarLoop]: Abstraction has 139 states and 143 transitions. [2022-01-31 19:18:14,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 2.192982456140351) internal successors, (125), 56 states have internal predecessors, (125), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:18:14,701 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 143 transitions. [2022-01-31 19:18:14,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-01-31 19:18:14,702 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:18:14,702 INFO L514 BasicCegarLoop]: trace histogram [54, 54, 6, 6, 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] [2022-01-31 19:18:14,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-01-31 19:18:14,702 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:18:14,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:18:14,702 INFO L85 PathProgramCache]: Analyzing trace with hash -756825068, now seen corresponding path program 54 times [2022-01-31 19:18:14,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:18:14,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1841328972] [2022-01-31 19:18:14,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:18:14,704 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:18:14,704 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:18:14,704 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:18:14,706 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:18:14,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:15,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:18:15,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:15,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 19:18:15,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:15,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-01-31 19:18:15,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:15,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-01-31 19:18:15,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:15,807 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:18:15,807 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:18:15,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1841328972] [2022-01-31 19:18:15,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1841328972] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:18:15,807 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:18:15,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [58] imperfect sequences [] total 58 [2022-01-31 19:18:15,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044864983] [2022-01-31 19:18:15,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:18:15,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-01-31 19:18:15,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:18:15,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-01-31 19:18:15,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1598, Invalid=1708, Unknown=0, NotChecked=0, Total=3306 [2022-01-31 19:18:15,809 INFO L87 Difference]: Start difference. First operand 139 states and 143 transitions. Second operand has 58 states, 58 states have (on average 2.189655172413793) internal successors, (127), 57 states have internal predecessors, (127), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:18:17,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:18:17,147 INFO L93 Difference]: Finished difference Result 166 states and 174 transitions. [2022-01-31 19:18:17,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-01-31 19:18:17,147 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 2.189655172413793) internal successors, (127), 57 states have internal predecessors, (127), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 156 [2022-01-31 19:18:17,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:18:17,148 INFO L225 Difference]: With dead ends: 166 [2022-01-31 19:18:17,148 INFO L226 Difference]: Without dead ends: 142 [2022-01-31 19:18:17,149 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1539 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=4788, Invalid=7868, Unknown=0, NotChecked=0, Total=12656 [2022-01-31 19:18:17,150 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 129 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:18:17,150 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [132 Valid, 57 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:18:17,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2022-01-31 19:18:17,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 141. [2022-01-31 19:18:17,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 133 states have (on average 1.0225563909774436) internal successors, (136), 133 states have internal predecessors, (136), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:18:17,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 145 transitions. [2022-01-31 19:18:17,171 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 145 transitions. Word has length 156 [2022-01-31 19:18:17,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:18:17,171 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 145 transitions. [2022-01-31 19:18:17,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 2.189655172413793) internal successors, (127), 57 states have internal predecessors, (127), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:18:17,171 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 145 transitions. [2022-01-31 19:18:17,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-01-31 19:18:17,172 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:18:17,172 INFO L514 BasicCegarLoop]: trace histogram [55, 55, 6, 6, 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] [2022-01-31 19:18:17,172 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-01-31 19:18:17,172 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:18:17,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:18:17,172 INFO L85 PathProgramCache]: Analyzing trace with hash -543649162, now seen corresponding path program 55 times [2022-01-31 19:18:17,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:18:17,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1742930505] [2022-01-31 19:18:17,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:18:17,174 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:18:17,174 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:18:17,174 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:18:17,176 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:18:17,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:18,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:18:18,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:18,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-01-31 19:18:18,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:18,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-01-31 19:18:18,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:18,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-01-31 19:18:18,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:18,270 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:18:18,270 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:18:18,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1742930505] [2022-01-31 19:18:18,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1742930505] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:18:18,270 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:18:18,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [59] imperfect sequences [] total 59 [2022-01-31 19:18:18,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892939259] [2022-01-31 19:18:18,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:18:18,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-01-31 19:18:18,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:18:18,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-01-31 19:18:18,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1655, Invalid=1767, Unknown=0, NotChecked=0, Total=3422 [2022-01-31 19:18:18,272 INFO L87 Difference]: Start difference. First operand 141 states and 145 transitions. Second operand has 59 states, 59 states have (on average 2.1864406779661016) internal successors, (129), 58 states have internal predecessors, (129), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:18:19,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:18:19,471 INFO L93 Difference]: Finished difference Result 168 states and 176 transitions. [2022-01-31 19:18:19,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-01-31 19:18:19,471 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 2.1864406779661016) internal successors, (129), 58 states have internal predecessors, (129), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 158 [2022-01-31 19:18:19,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:18:19,472 INFO L225 Difference]: With dead ends: 168 [2022-01-31 19:18:19,472 INFO L226 Difference]: Without dead ends: 144 [2022-01-31 19:18:19,473 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1595 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=4959, Invalid=8151, Unknown=0, NotChecked=0, Total=13110 [2022-01-31 19:18:19,473 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 131 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:18:19,474 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [134 Valid, 42 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:18:19,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2022-01-31 19:18:19,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 143. [2022-01-31 19:18:19,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 135 states have (on average 1.0222222222222221) internal successors, (138), 135 states have internal predecessors, (138), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:18:19,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 147 transitions. [2022-01-31 19:18:19,496 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 147 transitions. Word has length 158 [2022-01-31 19:18:19,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:18:19,496 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 147 transitions. [2022-01-31 19:18:19,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 2.1864406779661016) internal successors, (129), 58 states have internal predecessors, (129), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:18:19,497 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 147 transitions. [2022-01-31 19:18:19,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-01-31 19:18:19,497 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:18:19,498 INFO L514 BasicCegarLoop]: trace histogram [56, 56, 6, 6, 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] [2022-01-31 19:18:19,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-01-31 19:18:19,498 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:18:19,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:18:19,498 INFO L85 PathProgramCache]: Analyzing trace with hash -1840033704, now seen corresponding path program 56 times [2022-01-31 19:18:19,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:18:19,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1570757442] [2022-01-31 19:18:19,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:18:19,500 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:18:19,500 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:18:19,500 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:18:19,502 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:18:19,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:20,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:18:20,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:20,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-01-31 19:18:20,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:20,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-01-31 19:18:20,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:20,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 19:18:20,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:20,368 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:18:20,368 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:18:20,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1570757442] [2022-01-31 19:18:20,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1570757442] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:18:20,368 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:18:20,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [60] imperfect sequences [] total 60 [2022-01-31 19:18:20,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906211770] [2022-01-31 19:18:20,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:18:20,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2022-01-31 19:18:20,369 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:18:20,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2022-01-31 19:18:20,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1713, Invalid=1827, Unknown=0, NotChecked=0, Total=3540 [2022-01-31 19:18:20,370 INFO L87 Difference]: Start difference. First operand 143 states and 147 transitions. Second operand has 60 states, 60 states have (on average 2.183333333333333) internal successors, (131), 59 states have internal predecessors, (131), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:18:21,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:18:21,322 INFO L93 Difference]: Finished difference Result 170 states and 178 transitions. [2022-01-31 19:18:21,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-01-31 19:18:21,322 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 2.183333333333333) internal successors, (131), 59 states have internal predecessors, (131), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 160 [2022-01-31 19:18:21,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:18:21,323 INFO L225 Difference]: With dead ends: 170 [2022-01-31 19:18:21,323 INFO L226 Difference]: Without dead ends: 146 [2022-01-31 19:18:21,324 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1652 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=5133, Invalid=8439, Unknown=0, NotChecked=0, Total=13572 [2022-01-31 19:18:21,324 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 133 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:18:21,325 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 72 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:18:21,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2022-01-31 19:18:21,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 145. [2022-01-31 19:18:21,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 137 states have (on average 1.0218978102189782) internal successors, (140), 137 states have internal predecessors, (140), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:18:21,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 149 transitions. [2022-01-31 19:18:21,347 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 149 transitions. Word has length 160 [2022-01-31 19:18:21,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:18:21,347 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 149 transitions. [2022-01-31 19:18:21,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 2.183333333333333) internal successors, (131), 59 states have internal predecessors, (131), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:18:21,347 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 149 transitions. [2022-01-31 19:18:21,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-01-31 19:18:21,348 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:18:21,348 INFO L514 BasicCegarLoop]: trace histogram [57, 57, 6, 6, 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] [2022-01-31 19:18:21,348 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-01-31 19:18:21,348 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:18:21,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:18:21,348 INFO L85 PathProgramCache]: Analyzing trace with hash -2125062726, now seen corresponding path program 57 times [2022-01-31 19:18:21,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:18:21,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1038119951] [2022-01-31 19:18:21,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:18:21,351 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:18:21,352 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:18:21,352 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:18:21,354 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:18:21,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:22,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:18:22,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:22,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-01-31 19:18:22,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:22,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-01-31 19:18:22,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:22,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-01-31 19:18:22,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:22,118 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:18:22,118 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:18:22,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1038119951] [2022-01-31 19:18:22,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1038119951] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:18:22,118 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:18:22,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [61] imperfect sequences [] total 61 [2022-01-31 19:18:22,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556329762] [2022-01-31 19:18:22,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:18:22,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-01-31 19:18:22,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:18:22,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-01-31 19:18:22,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1772, Invalid=1888, Unknown=0, NotChecked=0, Total=3660 [2022-01-31 19:18:22,120 INFO L87 Difference]: Start difference. First operand 145 states and 149 transitions. Second operand has 61 states, 61 states have (on average 2.180327868852459) internal successors, (133), 60 states have internal predecessors, (133), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:18:23,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:18:23,275 INFO L93 Difference]: Finished difference Result 172 states and 180 transitions. [2022-01-31 19:18:23,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-01-31 19:18:23,275 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 2.180327868852459) internal successors, (133), 60 states have internal predecessors, (133), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 162 [2022-01-31 19:18:23,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:18:23,276 INFO L225 Difference]: With dead ends: 172 [2022-01-31 19:18:23,276 INFO L226 Difference]: Without dead ends: 148 [2022-01-31 19:18:23,277 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1710 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=5310, Invalid=8732, Unknown=0, NotChecked=0, Total=14042 [2022-01-31 19:18:23,277 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 135 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:18:23,278 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [138 Valid, 57 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:18:23,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2022-01-31 19:18:23,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 147. [2022-01-31 19:18:23,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 139 states have (on average 1.0215827338129497) internal successors, (142), 139 states have internal predecessors, (142), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:18:23,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 151 transitions. [2022-01-31 19:18:23,302 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 151 transitions. Word has length 162 [2022-01-31 19:18:23,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:18:23,302 INFO L470 AbstractCegarLoop]: Abstraction has 147 states and 151 transitions. [2022-01-31 19:18:23,302 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 2.180327868852459) internal successors, (133), 60 states have internal predecessors, (133), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:18:23,302 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 151 transitions. [2022-01-31 19:18:23,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-01-31 19:18:23,303 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:18:23,303 INFO L514 BasicCegarLoop]: trace histogram [58, 58, 6, 6, 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] [2022-01-31 19:18:23,304 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-01-31 19:18:23,304 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:18:23,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:18:23,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1160045924, now seen corresponding path program 58 times [2022-01-31 19:18:23,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:18:23,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1613115042] [2022-01-31 19:18:23,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:18:23,306 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:18:23,306 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:18:23,306 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:18:23,308 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:18:23,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:24,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:18:24,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:24,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 19:18:24,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:24,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-01-31 19:18:24,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:24,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-01-31 19:18:24,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:24,211 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:18:24,211 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:18:24,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1613115042] [2022-01-31 19:18:24,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1613115042] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:18:24,211 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:18:24,211 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [62] imperfect sequences [] total 62 [2022-01-31 19:18:24,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53613140] [2022-01-31 19:18:24,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:18:24,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2022-01-31 19:18:24,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:18:24,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2022-01-31 19:18:24,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1832, Invalid=1950, Unknown=0, NotChecked=0, Total=3782 [2022-01-31 19:18:24,213 INFO L87 Difference]: Start difference. First operand 147 states and 151 transitions. Second operand has 62 states, 62 states have (on average 2.1774193548387095) internal successors, (135), 61 states have internal predecessors, (135), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:18:25,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:18:25,569 INFO L93 Difference]: Finished difference Result 174 states and 182 transitions. [2022-01-31 19:18:25,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-01-31 19:18:25,569 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 2.1774193548387095) internal successors, (135), 61 states have internal predecessors, (135), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 164 [2022-01-31 19:18:25,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:18:25,570 INFO L225 Difference]: With dead ends: 174 [2022-01-31 19:18:25,570 INFO L226 Difference]: Without dead ends: 150 [2022-01-31 19:18:25,571 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1769 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=5490, Invalid=9030, Unknown=0, NotChecked=0, Total=14520 [2022-01-31 19:18:25,572 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 137 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:18:25,572 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [140 Valid, 52 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:18:25,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2022-01-31 19:18:25,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 149. [2022-01-31 19:18:25,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 141 states have (on average 1.0212765957446808) internal successors, (144), 141 states have internal predecessors, (144), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:18:25,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 153 transitions. [2022-01-31 19:18:25,596 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 153 transitions. Word has length 164 [2022-01-31 19:18:25,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:18:25,596 INFO L470 AbstractCegarLoop]: Abstraction has 149 states and 153 transitions. [2022-01-31 19:18:25,596 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 2.1774193548387095) internal successors, (135), 61 states have internal predecessors, (135), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:18:25,596 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 153 transitions. [2022-01-31 19:18:25,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-01-31 19:18:25,597 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:18:25,597 INFO L514 BasicCegarLoop]: trace histogram [59, 59, 6, 6, 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] [2022-01-31 19:18:25,598 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-01-31 19:18:25,598 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:18:25,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:18:25,598 INFO L85 PathProgramCache]: Analyzing trace with hash -1491835138, now seen corresponding path program 59 times [2022-01-31 19:18:25,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:18:25,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1182357446] [2022-01-31 19:18:25,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:18:25,599 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:18:25,599 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:18:25,600 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:18:25,602 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:18:25,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:26,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:18:26,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:26,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-01-31 19:18:26,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:26,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-01-31 19:18:26,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:26,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-01-31 19:18:26,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:26,420 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:18:26,421 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:18:26,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1182357446] [2022-01-31 19:18:26,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1182357446] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:18:26,421 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:18:26,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [63] imperfect sequences [] total 63 [2022-01-31 19:18:26,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744679995] [2022-01-31 19:18:26,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:18:26,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-01-31 19:18:26,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:18:26,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-01-31 19:18:26,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1893, Invalid=2013, Unknown=0, NotChecked=0, Total=3906 [2022-01-31 19:18:26,426 INFO L87 Difference]: Start difference. First operand 149 states and 153 transitions. Second operand has 63 states, 63 states have (on average 2.1746031746031744) internal successors, (137), 62 states have internal predecessors, (137), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:18:27,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:18:27,938 INFO L93 Difference]: Finished difference Result 176 states and 184 transitions. [2022-01-31 19:18:27,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-01-31 19:18:27,939 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 2.1746031746031744) internal successors, (137), 62 states have internal predecessors, (137), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 166 [2022-01-31 19:18:27,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:18:27,939 INFO L225 Difference]: With dead ends: 176 [2022-01-31 19:18:27,939 INFO L226 Difference]: Without dead ends: 152 [2022-01-31 19:18:27,940 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1829 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=5673, Invalid=9333, Unknown=0, NotChecked=0, Total=15006 [2022-01-31 19:18:27,941 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 139 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:18:27,941 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [142 Valid, 47 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:18:27,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2022-01-31 19:18:27,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 151. [2022-01-31 19:18:27,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 143 states have (on average 1.020979020979021) internal successors, (146), 143 states have internal predecessors, (146), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:18:27,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 155 transitions. [2022-01-31 19:18:27,965 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 155 transitions. Word has length 166 [2022-01-31 19:18:27,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:18:27,965 INFO L470 AbstractCegarLoop]: Abstraction has 151 states and 155 transitions. [2022-01-31 19:18:27,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 2.1746031746031744) internal successors, (137), 62 states have internal predecessors, (137), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:18:27,965 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 155 transitions. [2022-01-31 19:18:27,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-01-31 19:18:27,965 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:18:27,966 INFO L514 BasicCegarLoop]: trace histogram [60, 60, 6, 6, 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] [2022-01-31 19:18:27,966 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-01-31 19:18:27,966 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:18:27,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:18:27,966 INFO L85 PathProgramCache]: Analyzing trace with hash 1781277408, now seen corresponding path program 60 times [2022-01-31 19:18:27,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:18:27,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [549335226] [2022-01-31 19:18:27,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:18:27,967 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:18:27,967 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:18:27,968 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:18:27,970 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:18:27,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:28,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:18:28,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:28,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 19:18:28,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:28,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-01-31 19:18:28,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:28,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 19:18:28,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:28,765 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:18:28,766 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:18:28,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [549335226] [2022-01-31 19:18:28,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [549335226] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:18:28,766 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:18:28,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [64] imperfect sequences [] total 64 [2022-01-31 19:18:28,766 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399233368] [2022-01-31 19:18:28,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:18:28,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-01-31 19:18:28,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:18:28,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-01-31 19:18:28,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1955, Invalid=2077, Unknown=0, NotChecked=0, Total=4032 [2022-01-31 19:18:28,768 INFO L87 Difference]: Start difference. First operand 151 states and 155 transitions. Second operand has 64 states, 64 states have (on average 2.171875) internal successors, (139), 63 states have internal predecessors, (139), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:18:30,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:18:30,055 INFO L93 Difference]: Finished difference Result 178 states and 186 transitions. [2022-01-31 19:18:30,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-01-31 19:18:30,056 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 2.171875) internal successors, (139), 63 states have internal predecessors, (139), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 168 [2022-01-31 19:18:30,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:18:30,056 INFO L225 Difference]: With dead ends: 178 [2022-01-31 19:18:30,057 INFO L226 Difference]: Without dead ends: 154 [2022-01-31 19:18:30,058 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1890 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=5859, Invalid=9641, Unknown=0, NotChecked=0, Total=15500 [2022-01-31 19:18:30,058 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 141 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:18:30,058 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 47 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:18:30,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2022-01-31 19:18:30,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 153. [2022-01-31 19:18:30,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 145 states have (on average 1.0206896551724138) internal successors, (148), 145 states have internal predecessors, (148), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:18:30,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 157 transitions. [2022-01-31 19:18:30,084 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 157 transitions. Word has length 168 [2022-01-31 19:18:30,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:18:30,084 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 157 transitions. [2022-01-31 19:18:30,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 2.171875) internal successors, (139), 63 states have internal predecessors, (139), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:18:30,084 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 157 transitions. [2022-01-31 19:18:30,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2022-01-31 19:18:30,085 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:18:30,085 INFO L514 BasicCegarLoop]: trace histogram [61, 61, 6, 6, 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] [2022-01-31 19:18:30,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2022-01-31 19:18:30,085 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:18:30,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:18:30,085 INFO L85 PathProgramCache]: Analyzing trace with hash -968593854, now seen corresponding path program 61 times [2022-01-31 19:18:30,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:18:30,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1270832639] [2022-01-31 19:18:30,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:18:30,087 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:18:30,087 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:18:30,087 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:18:30,089 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:18:30,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:30,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:18:30,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:30,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-01-31 19:18:30,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:30,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-01-31 19:18:30,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:30,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-01-31 19:18:30,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:30,936 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:18:30,936 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:18:30,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1270832639] [2022-01-31 19:18:30,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1270832639] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:18:30,936 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:18:30,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [65] imperfect sequences [] total 65 [2022-01-31 19:18:30,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578482726] [2022-01-31 19:18:30,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:18:30,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2022-01-31 19:18:30,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:18:30,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2022-01-31 19:18:30,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2018, Invalid=2142, Unknown=0, NotChecked=0, Total=4160 [2022-01-31 19:18:30,938 INFO L87 Difference]: Start difference. First operand 153 states and 157 transitions. Second operand has 65 states, 65 states have (on average 2.169230769230769) internal successors, (141), 64 states have internal predecessors, (141), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:18:32,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:18:32,014 INFO L93 Difference]: Finished difference Result 180 states and 188 transitions. [2022-01-31 19:18:32,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-01-31 19:18:32,014 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 2.169230769230769) internal successors, (141), 64 states have internal predecessors, (141), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 170 [2022-01-31 19:18:32,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:18:32,015 INFO L225 Difference]: With dead ends: 180 [2022-01-31 19:18:32,015 INFO L226 Difference]: Without dead ends: 156 [2022-01-31 19:18:32,016 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1952 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=6048, Invalid=9954, Unknown=0, NotChecked=0, Total=16002 [2022-01-31 19:18:32,016 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 143 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:18:32,017 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [146 Valid, 62 Invalid, 354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:18:32,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2022-01-31 19:18:32,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 155. [2022-01-31 19:18:32,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 147 states have (on average 1.0204081632653061) internal successors, (150), 147 states have internal predecessors, (150), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:18:32,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 159 transitions. [2022-01-31 19:18:32,042 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 159 transitions. Word has length 170 [2022-01-31 19:18:32,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:18:32,042 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 159 transitions. [2022-01-31 19:18:32,043 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 2.169230769230769) internal successors, (141), 64 states have internal predecessors, (141), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:18:32,043 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 159 transitions. [2022-01-31 19:18:32,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-01-31 19:18:32,043 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:18:32,043 INFO L514 BasicCegarLoop]: trace histogram [62, 62, 6, 6, 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] [2022-01-31 19:18:32,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2022-01-31 19:18:32,044 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:18:32,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:18:32,044 INFO L85 PathProgramCache]: Analyzing trace with hash 2104977700, now seen corresponding path program 62 times [2022-01-31 19:18:32,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:18:32,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2043703718] [2022-01-31 19:18:32,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:18:32,045 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:18:32,045 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:18:32,045 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:18:32,048 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:18:32,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:33,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:18:33,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:33,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 19:18:33,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:33,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-01-31 19:18:33,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:33,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-01-31 19:18:33,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:33,055 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:18:33,055 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:18:33,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2043703718] [2022-01-31 19:18:33,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2043703718] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:18:33,055 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:18:33,055 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [66] imperfect sequences [] total 66 [2022-01-31 19:18:33,055 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755664897] [2022-01-31 19:18:33,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:18:33,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2022-01-31 19:18:33,056 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:18:33,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2022-01-31 19:18:33,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2082, Invalid=2208, Unknown=0, NotChecked=0, Total=4290 [2022-01-31 19:18:33,068 INFO L87 Difference]: Start difference. First operand 155 states and 159 transitions. Second operand has 66 states, 66 states have (on average 2.1666666666666665) internal successors, (143), 65 states have internal predecessors, (143), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:18:34,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:18:34,174 INFO L93 Difference]: Finished difference Result 182 states and 190 transitions. [2022-01-31 19:18:34,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-01-31 19:18:34,174 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 2.1666666666666665) internal successors, (143), 65 states have internal predecessors, (143), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 172 [2022-01-31 19:18:34,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:18:34,175 INFO L225 Difference]: With dead ends: 182 [2022-01-31 19:18:34,175 INFO L226 Difference]: Without dead ends: 158 [2022-01-31 19:18:34,177 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2015 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=6240, Invalid=10272, Unknown=0, NotChecked=0, Total=16512 [2022-01-31 19:18:34,177 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 145 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:18:34,177 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [148 Valid, 57 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:18:34,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2022-01-31 19:18:34,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 157. [2022-01-31 19:18:34,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 149 states have (on average 1.0201342281879195) internal successors, (152), 149 states have internal predecessors, (152), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:18:34,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 161 transitions. [2022-01-31 19:18:34,205 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 161 transitions. Word has length 172 [2022-01-31 19:18:34,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:18:34,205 INFO L470 AbstractCegarLoop]: Abstraction has 157 states and 161 transitions. [2022-01-31 19:18:34,205 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 2.1666666666666665) internal successors, (143), 65 states have internal predecessors, (143), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:18:34,205 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 161 transitions. [2022-01-31 19:18:34,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-01-31 19:18:34,206 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:18:34,206 INFO L514 BasicCegarLoop]: trace histogram [63, 63, 6, 6, 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] [2022-01-31 19:18:34,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2022-01-31 19:18:34,206 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:18:34,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:18:34,206 INFO L85 PathProgramCache]: Analyzing trace with hash 869741446, now seen corresponding path program 63 times [2022-01-31 19:18:34,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:18:34,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1553846869] [2022-01-31 19:18:34,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:18:34,208 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:18:34,208 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:18:34,208 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:18:34,211 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:18:34,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:35,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:18:35,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:35,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-01-31 19:18:35,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:35,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-01-31 19:18:35,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:35,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-01-31 19:18:35,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:35,357 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:18:35,357 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:18:35,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1553846869] [2022-01-31 19:18:35,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1553846869] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:18:35,357 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:18:35,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [67] imperfect sequences [] total 67 [2022-01-31 19:18:35,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727874024] [2022-01-31 19:18:35,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:18:35,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2022-01-31 19:18:35,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:18:35,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2022-01-31 19:18:35,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2147, Invalid=2275, Unknown=0, NotChecked=0, Total=4422 [2022-01-31 19:18:35,360 INFO L87 Difference]: Start difference. First operand 157 states and 161 transitions. Second operand has 67 states, 67 states have (on average 2.1641791044776117) internal successors, (145), 66 states have internal predecessors, (145), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:18:36,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:18:36,515 INFO L93 Difference]: Finished difference Result 184 states and 192 transitions. [2022-01-31 19:18:36,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-01-31 19:18:36,516 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 2.1641791044776117) internal successors, (145), 66 states have internal predecessors, (145), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 174 [2022-01-31 19:18:36,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:18:36,516 INFO L225 Difference]: With dead ends: 184 [2022-01-31 19:18:36,517 INFO L226 Difference]: Without dead ends: 160 [2022-01-31 19:18:36,519 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2079 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=6435, Invalid=10595, Unknown=0, NotChecked=0, Total=17030 [2022-01-31 19:18:36,519 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 147 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:18:36,519 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [150 Valid, 47 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:18:36,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2022-01-31 19:18:36,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 159. [2022-01-31 19:18:36,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 151 states have (on average 1.0198675496688743) internal successors, (154), 151 states have internal predecessors, (154), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:18:36,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 163 transitions. [2022-01-31 19:18:36,547 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 163 transitions. Word has length 174 [2022-01-31 19:18:36,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:18:36,549 INFO L470 AbstractCegarLoop]: Abstraction has 159 states and 163 transitions. [2022-01-31 19:18:36,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 2.1641791044776117) internal successors, (145), 66 states have internal predecessors, (145), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:18:36,549 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 163 transitions. [2022-01-31 19:18:36,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-31 19:18:36,550 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:18:36,550 INFO L514 BasicCegarLoop]: trace histogram [64, 64, 6, 6, 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] [2022-01-31 19:18:36,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2022-01-31 19:18:36,550 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:18:36,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:18:36,550 INFO L85 PathProgramCache]: Analyzing trace with hash -781324952, now seen corresponding path program 64 times [2022-01-31 19:18:36,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:18:36,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [430532659] [2022-01-31 19:18:36,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:18:36,552 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:18:36,552 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:18:36,552 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:18:36,555 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:18:36,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:37,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:18:37,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:37,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-01-31 19:18:37,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:37,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-01-31 19:18:37,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:37,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 19:18:37,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:37,910 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:18:37,910 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:18:37,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [430532659] [2022-01-31 19:18:37,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [430532659] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:18:37,911 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:18:37,911 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [68] imperfect sequences [] total 68 [2022-01-31 19:18:37,911 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274481375] [2022-01-31 19:18:37,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:18:37,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2022-01-31 19:18:37,911 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:18:37,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2022-01-31 19:18:37,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2213, Invalid=2343, Unknown=0, NotChecked=0, Total=4556 [2022-01-31 19:18:37,913 INFO L87 Difference]: Start difference. First operand 159 states and 163 transitions. Second operand has 68 states, 68 states have (on average 2.161764705882353) internal successors, (147), 67 states have internal predecessors, (147), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:18:39,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:18:39,106 INFO L93 Difference]: Finished difference Result 186 states and 194 transitions. [2022-01-31 19:18:39,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-01-31 19:18:39,107 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 2.161764705882353) internal successors, (147), 67 states have internal predecessors, (147), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 176 [2022-01-31 19:18:39,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:18:39,107 INFO L225 Difference]: With dead ends: 186 [2022-01-31 19:18:39,108 INFO L226 Difference]: Without dead ends: 162 [2022-01-31 19:18:39,110 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2144 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=6633, Invalid=10923, Unknown=0, NotChecked=0, Total=17556 [2022-01-31 19:18:39,110 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 149 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:18:39,110 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [152 Valid, 72 Invalid, 405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:18:39,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2022-01-31 19:18:39,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 161. [2022-01-31 19:18:39,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 153 states have (on average 1.0196078431372548) internal successors, (156), 153 states have internal predecessors, (156), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:18:39,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 165 transitions. [2022-01-31 19:18:39,149 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 165 transitions. Word has length 176 [2022-01-31 19:18:39,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:18:39,149 INFO L470 AbstractCegarLoop]: Abstraction has 161 states and 165 transitions. [2022-01-31 19:18:39,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 2.161764705882353) internal successors, (147), 67 states have internal predecessors, (147), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:18:39,149 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 165 transitions. [2022-01-31 19:18:39,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-01-31 19:18:39,150 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:18:39,150 INFO L514 BasicCegarLoop]: trace histogram [65, 65, 6, 6, 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] [2022-01-31 19:18:39,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2022-01-31 19:18:39,150 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:18:39,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:18:39,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1681766090, now seen corresponding path program 65 times [2022-01-31 19:18:39,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:18:39,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1215940462] [2022-01-31 19:18:39,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:18:39,155 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:18:39,155 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:18:39,155 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:18:39,158 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:18:39,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:40,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:18:40,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:40,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-01-31 19:18:40,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:40,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-01-31 19:18:40,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:40,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-01-31 19:18:40,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:40,669 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:18:40,669 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:18:40,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1215940462] [2022-01-31 19:18:40,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1215940462] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:18:40,669 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:18:40,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [69] imperfect sequences [] total 69 [2022-01-31 19:18:40,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399441237] [2022-01-31 19:18:40,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:18:40,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2022-01-31 19:18:40,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:18:40,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2022-01-31 19:18:40,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2280, Invalid=2412, Unknown=0, NotChecked=0, Total=4692 [2022-01-31 19:18:40,671 INFO L87 Difference]: Start difference. First operand 161 states and 165 transitions. Second operand has 69 states, 69 states have (on average 2.1594202898550723) internal successors, (149), 68 states have internal predecessors, (149), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:18:42,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:18:42,290 INFO L93 Difference]: Finished difference Result 188 states and 196 transitions. [2022-01-31 19:18:42,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-01-31 19:18:42,290 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 2.1594202898550723) internal successors, (149), 68 states have internal predecessors, (149), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 178 [2022-01-31 19:18:42,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:18:42,291 INFO L225 Difference]: With dead ends: 188 [2022-01-31 19:18:42,291 INFO L226 Difference]: Without dead ends: 164 [2022-01-31 19:18:42,292 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2210 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=6834, Invalid=11256, Unknown=0, NotChecked=0, Total=18090 [2022-01-31 19:18:42,293 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 151 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:18:42,293 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [154 Valid, 37 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:18:42,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2022-01-31 19:18:42,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 163. [2022-01-31 19:18:42,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 155 states have (on average 1.0193548387096774) internal successors, (158), 155 states have internal predecessors, (158), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:18:42,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 167 transitions. [2022-01-31 19:18:42,322 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 167 transitions. Word has length 178 [2022-01-31 19:18:42,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:18:42,322 INFO L470 AbstractCegarLoop]: Abstraction has 163 states and 167 transitions. [2022-01-31 19:18:42,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 2.1594202898550723) internal successors, (149), 68 states have internal predecessors, (149), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:18:42,322 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 167 transitions. [2022-01-31 19:18:42,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2022-01-31 19:18:42,323 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:18:42,323 INFO L514 BasicCegarLoop]: trace histogram [66, 66, 6, 6, 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] [2022-01-31 19:18:42,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2022-01-31 19:18:42,323 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:18:42,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:18:42,323 INFO L85 PathProgramCache]: Analyzing trace with hash -2109689940, now seen corresponding path program 66 times [2022-01-31 19:18:42,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:18:42,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2110359310] [2022-01-31 19:18:42,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:18:42,325 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:18:42,325 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:18:42,325 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:18:42,328 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:18:42,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:43,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:18:43,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:43,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 19:18:43,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:43,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-01-31 19:18:43,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:43,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-01-31 19:18:43,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:43,618 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:18:43,618 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:18:43,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2110359310] [2022-01-31 19:18:43,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2110359310] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:18:43,618 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:18:43,618 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [70] imperfect sequences [] total 70 [2022-01-31 19:18:43,618 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912299464] [2022-01-31 19:18:43,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:18:43,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2022-01-31 19:18:43,619 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:18:43,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2022-01-31 19:18:43,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2348, Invalid=2482, Unknown=0, NotChecked=0, Total=4830 [2022-01-31 19:18:43,621 INFO L87 Difference]: Start difference. First operand 163 states and 167 transitions. Second operand has 70 states, 70 states have (on average 2.157142857142857) internal successors, (151), 69 states have internal predecessors, (151), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:18:44,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:18:44,859 INFO L93 Difference]: Finished difference Result 190 states and 198 transitions. [2022-01-31 19:18:44,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-01-31 19:18:44,859 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 2.157142857142857) internal successors, (151), 69 states have internal predecessors, (151), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 180 [2022-01-31 19:18:44,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:18:44,860 INFO L225 Difference]: With dead ends: 190 [2022-01-31 19:18:44,860 INFO L226 Difference]: Without dead ends: 166 [2022-01-31 19:18:44,861 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2277 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=7038, Invalid=11594, Unknown=0, NotChecked=0, Total=18632 [2022-01-31 19:18:44,871 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 153 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:18:44,872 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [156 Valid, 37 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:18:44,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2022-01-31 19:18:44,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 165. [2022-01-31 19:18:44,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 157 states have (on average 1.019108280254777) internal successors, (160), 157 states have internal predecessors, (160), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:18:44,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 169 transitions. [2022-01-31 19:18:44,905 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 169 transitions. Word has length 180 [2022-01-31 19:18:44,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:18:44,905 INFO L470 AbstractCegarLoop]: Abstraction has 165 states and 169 transitions. [2022-01-31 19:18:44,905 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 2.157142857142857) internal successors, (151), 69 states have internal predecessors, (151), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:18:44,905 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 169 transitions. [2022-01-31 19:18:44,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-01-31 19:18:44,920 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:18:44,920 INFO L514 BasicCegarLoop]: trace histogram [67, 67, 6, 6, 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] [2022-01-31 19:18:44,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2022-01-31 19:18:44,920 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:18:44,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:18:44,920 INFO L85 PathProgramCache]: Analyzing trace with hash 728299534, now seen corresponding path program 67 times [2022-01-31 19:18:44,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:18:44,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [163066657] [2022-01-31 19:18:44,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:18:44,922 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:18:44,922 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:18:44,922 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:18:44,936 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:18:44,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:45,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:18:45,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:45,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-31 19:18:45,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:45,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-01-31 19:18:45,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:45,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-01-31 19:18:45,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:45,924 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:18:45,925 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:18:45,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [163066657] [2022-01-31 19:18:45,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [163066657] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:18:45,925 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:18:45,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [71] imperfect sequences [] total 71 [2022-01-31 19:18:45,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221047806] [2022-01-31 19:18:45,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:18:45,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2022-01-31 19:18:45,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:18:45,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2022-01-31 19:18:45,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2417, Invalid=2553, Unknown=0, NotChecked=0, Total=4970 [2022-01-31 19:18:45,926 INFO L87 Difference]: Start difference. First operand 165 states and 169 transitions. Second operand has 71 states, 71 states have (on average 2.1549295774647885) internal successors, (153), 70 states have internal predecessors, (153), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:18:47,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:18:47,197 INFO L93 Difference]: Finished difference Result 192 states and 200 transitions. [2022-01-31 19:18:47,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-01-31 19:18:47,198 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 2.1549295774647885) internal successors, (153), 70 states have internal predecessors, (153), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 182 [2022-01-31 19:18:47,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:18:47,205 INFO L225 Difference]: With dead ends: 192 [2022-01-31 19:18:47,205 INFO L226 Difference]: Without dead ends: 168 [2022-01-31 19:18:47,207 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2345 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=7245, Invalid=11937, Unknown=0, NotChecked=0, Total=19182 [2022-01-31 19:18:47,208 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 155 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:18:47,208 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [158 Valid, 47 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:18:47,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2022-01-31 19:18:47,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 167. [2022-01-31 19:18:47,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 159 states have (on average 1.0188679245283019) internal successors, (162), 159 states have internal predecessors, (162), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:18:47,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 171 transitions. [2022-01-31 19:18:47,256 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 171 transitions. Word has length 182 [2022-01-31 19:18:47,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:18:47,256 INFO L470 AbstractCegarLoop]: Abstraction has 167 states and 171 transitions. [2022-01-31 19:18:47,256 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 2.1549295774647885) internal successors, (153), 70 states have internal predecessors, (153), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:18:47,256 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 171 transitions. [2022-01-31 19:18:47,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2022-01-31 19:18:47,257 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:18:47,257 INFO L514 BasicCegarLoop]: trace histogram [68, 68, 6, 6, 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] [2022-01-31 19:18:47,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2022-01-31 19:18:47,257 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:18:47,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:18:47,257 INFO L85 PathProgramCache]: Analyzing trace with hash 731951088, now seen corresponding path program 68 times [2022-01-31 19:18:47,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:18:47,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1918188113] [2022-01-31 19:18:47,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:18:47,259 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:18:47,259 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:18:47,261 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:18:47,264 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:18:47,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:48,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:18:48,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:48,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-01-31 19:18:48,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:48,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-01-31 19:18:48,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:48,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-31 19:18:48,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:48,577 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:18:48,577 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:18:48,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1918188113] [2022-01-31 19:18:48,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1918188113] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:18:48,578 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:18:48,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [72] imperfect sequences [] total 72 [2022-01-31 19:18:48,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452438654] [2022-01-31 19:18:48,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:18:48,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2022-01-31 19:18:48,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:18:48,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2022-01-31 19:18:48,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2487, Invalid=2625, Unknown=0, NotChecked=0, Total=5112 [2022-01-31 19:18:48,580 INFO L87 Difference]: Start difference. First operand 167 states and 171 transitions. Second operand has 72 states, 72 states have (on average 2.1527777777777777) internal successors, (155), 71 states have internal predecessors, (155), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:18:49,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:18:49,869 INFO L93 Difference]: Finished difference Result 194 states and 202 transitions. [2022-01-31 19:18:49,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-01-31 19:18:49,870 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 2.1527777777777777) internal successors, (155), 71 states have internal predecessors, (155), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 184 [2022-01-31 19:18:49,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:18:49,870 INFO L225 Difference]: With dead ends: 194 [2022-01-31 19:18:49,870 INFO L226 Difference]: Without dead ends: 170 [2022-01-31 19:18:49,872 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2414 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=7455, Invalid=12285, Unknown=0, NotChecked=0, Total=19740 [2022-01-31 19:18:49,882 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 157 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:18:49,883 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [160 Valid, 47 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:18:49,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2022-01-31 19:18:49,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 169. [2022-01-31 19:18:49,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 161 states have (on average 1.0186335403726707) internal successors, (164), 161 states have internal predecessors, (164), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:18:49,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 173 transitions. [2022-01-31 19:18:49,917 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 173 transitions. Word has length 184 [2022-01-31 19:18:49,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:18:49,918 INFO L470 AbstractCegarLoop]: Abstraction has 169 states and 173 transitions. [2022-01-31 19:18:49,918 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 2.1527777777777777) internal successors, (155), 71 states have internal predecessors, (155), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:18:49,918 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 173 transitions. [2022-01-31 19:18:49,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2022-01-31 19:18:49,919 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:18:49,920 INFO L514 BasicCegarLoop]: trace histogram [69, 69, 6, 6, 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] [2022-01-31 19:18:49,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2022-01-31 19:18:49,920 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:18:49,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:18:49,920 INFO L85 PathProgramCache]: Analyzing trace with hash -53872814, now seen corresponding path program 69 times [2022-01-31 19:18:49,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:18:49,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [841162723] [2022-01-31 19:18:49,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:18:49,921 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:18:49,922 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:18:49,922 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:18:49,925 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:18:49,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:51,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:18:51,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:51,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-01-31 19:18:51,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:51,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-01-31 19:18:51,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:51,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-01-31 19:18:51,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:51,443 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:18:51,443 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:18:51,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [841162723] [2022-01-31 19:18:51,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [841162723] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:18:51,444 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:18:51,444 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [73] imperfect sequences [] total 73 [2022-01-31 19:18:51,444 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089880888] [2022-01-31 19:18:51,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:18:51,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2022-01-31 19:18:51,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:18:51,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2022-01-31 19:18:51,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2558, Invalid=2698, Unknown=0, NotChecked=0, Total=5256 [2022-01-31 19:18:51,446 INFO L87 Difference]: Start difference. First operand 169 states and 173 transitions. Second operand has 73 states, 73 states have (on average 2.1506849315068495) internal successors, (157), 72 states have internal predecessors, (157), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:18:53,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:18:53,435 INFO L93 Difference]: Finished difference Result 196 states and 204 transitions. [2022-01-31 19:18:53,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-01-31 19:18:53,436 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 2.1506849315068495) internal successors, (157), 72 states have internal predecessors, (157), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 186 [2022-01-31 19:18:53,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:18:53,436 INFO L225 Difference]: With dead ends: 196 [2022-01-31 19:18:53,436 INFO L226 Difference]: Without dead ends: 172 [2022-01-31 19:18:53,438 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2484 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=7668, Invalid=12638, Unknown=0, NotChecked=0, Total=20306 [2022-01-31 19:18:53,438 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 159 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:18:53,438 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [162 Valid, 72 Invalid, 422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 344 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:18:53,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2022-01-31 19:18:53,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 171. [2022-01-31 19:18:53,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 163 states have (on average 1.01840490797546) internal successors, (166), 163 states have internal predecessors, (166), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:18:53,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 175 transitions. [2022-01-31 19:18:53,470 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 175 transitions. Word has length 186 [2022-01-31 19:18:53,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:18:53,470 INFO L470 AbstractCegarLoop]: Abstraction has 171 states and 175 transitions. [2022-01-31 19:18:53,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 2.1506849315068495) internal successors, (157), 72 states have internal predecessors, (157), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:18:53,471 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 175 transitions. [2022-01-31 19:18:53,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-01-31 19:18:53,471 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:18:53,471 INFO L514 BasicCegarLoop]: trace histogram [70, 70, 6, 6, 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] [2022-01-31 19:18:53,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2022-01-31 19:18:53,472 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:18:53,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:18:53,472 INFO L85 PathProgramCache]: Analyzing trace with hash 683601460, now seen corresponding path program 70 times [2022-01-31 19:18:53,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:18:53,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1391342960] [2022-01-31 19:18:53,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:18:53,473 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:18:53,473 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:18:53,473 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:18:53,477 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:18:53,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:55,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:18:55,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:55,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 19:18:55,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:55,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-01-31 19:18:55,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:55,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-01-31 19:18:55,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:55,092 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:18:55,093 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:18:55,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1391342960] [2022-01-31 19:18:55,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1391342960] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:18:55,093 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:18:55,093 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [74] imperfect sequences [] total 74 [2022-01-31 19:18:55,093 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266774054] [2022-01-31 19:18:55,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:18:55,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2022-01-31 19:18:55,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:18:55,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2022-01-31 19:18:55,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2630, Invalid=2772, Unknown=0, NotChecked=0, Total=5402 [2022-01-31 19:18:55,094 INFO L87 Difference]: Start difference. First operand 171 states and 175 transitions. Second operand has 74 states, 74 states have (on average 2.1486486486486487) internal successors, (159), 73 states have internal predecessors, (159), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:18:56,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:18:56,838 INFO L93 Difference]: Finished difference Result 198 states and 206 transitions. [2022-01-31 19:18:56,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-01-31 19:18:56,838 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 2.1486486486486487) internal successors, (159), 73 states have internal predecessors, (159), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 188 [2022-01-31 19:18:56,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:18:56,839 INFO L225 Difference]: With dead ends: 198 [2022-01-31 19:18:56,839 INFO L226 Difference]: Without dead ends: 174 [2022-01-31 19:18:56,841 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2555 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=7884, Invalid=12996, Unknown=0, NotChecked=0, Total=20880 [2022-01-31 19:18:56,865 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 161 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:18:56,866 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [164 Valid, 57 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:18:56,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2022-01-31 19:18:56,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 173. [2022-01-31 19:18:56,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 165 states have (on average 1.018181818181818) internal successors, (168), 165 states have internal predecessors, (168), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:18:56,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 177 transitions. [2022-01-31 19:18:56,933 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 177 transitions. Word has length 188 [2022-01-31 19:18:56,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:18:56,934 INFO L470 AbstractCegarLoop]: Abstraction has 173 states and 177 transitions. [2022-01-31 19:18:56,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 2.1486486486486487) internal successors, (159), 73 states have internal predecessors, (159), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:18:56,934 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 177 transitions. [2022-01-31 19:18:56,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-31 19:18:56,935 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:18:56,935 INFO L514 BasicCegarLoop]: trace histogram [71, 71, 6, 6, 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] [2022-01-31 19:18:56,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2022-01-31 19:18:56,936 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:18:56,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:18:56,936 INFO L85 PathProgramCache]: Analyzing trace with hash 726774934, now seen corresponding path program 71 times [2022-01-31 19:18:56,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:18:56,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1442482772] [2022-01-31 19:18:56,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:18:56,938 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:18:56,938 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:18:56,938 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:18:56,942 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:18:56,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:57,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:18:57,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:57,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-01-31 19:18:57,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:57,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-01-31 19:18:57,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:57,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-01-31 19:18:57,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:18:57,994 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:18:57,994 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:18:57,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1442482772] [2022-01-31 19:18:57,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1442482772] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:18:57,994 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:18:57,994 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [75] imperfect sequences [] total 75 [2022-01-31 19:18:57,994 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688906439] [2022-01-31 19:18:57,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:18:57,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2022-01-31 19:18:57,995 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:18:57,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2022-01-31 19:18:57,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2703, Invalid=2847, Unknown=0, NotChecked=0, Total=5550 [2022-01-31 19:18:57,996 INFO L87 Difference]: Start difference. First operand 173 states and 177 transitions. Second operand has 75 states, 75 states have (on average 2.1466666666666665) internal successors, (161), 74 states have internal predecessors, (161), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:18:59,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:18:59,369 INFO L93 Difference]: Finished difference Result 200 states and 208 transitions. [2022-01-31 19:18:59,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-01-31 19:18:59,370 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 2.1466666666666665) internal successors, (161), 74 states have internal predecessors, (161), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 190 [2022-01-31 19:18:59,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:18:59,370 INFO L225 Difference]: With dead ends: 200 [2022-01-31 19:18:59,370 INFO L226 Difference]: Without dead ends: 176 [2022-01-31 19:18:59,372 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2627 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=8103, Invalid=13359, Unknown=0, NotChecked=0, Total=21462 [2022-01-31 19:18:59,372 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 163 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:18:59,372 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [166 Valid, 47 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:18:59,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2022-01-31 19:18:59,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 175. [2022-01-31 19:18:59,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 167 states have (on average 1.0179640718562875) internal successors, (170), 167 states have internal predecessors, (170), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:18:59,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 179 transitions. [2022-01-31 19:18:59,410 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 179 transitions. Word has length 190 [2022-01-31 19:18:59,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:18:59,410 INFO L470 AbstractCegarLoop]: Abstraction has 175 states and 179 transitions. [2022-01-31 19:18:59,411 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 2.1466666666666665) internal successors, (161), 74 states have internal predecessors, (161), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:18:59,411 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 179 transitions. [2022-01-31 19:18:59,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2022-01-31 19:18:59,411 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:18:59,411 INFO L514 BasicCegarLoop]: trace histogram [72, 72, 6, 6, 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] [2022-01-31 19:18:59,412 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2022-01-31 19:18:59,412 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:18:59,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:18:59,412 INFO L85 PathProgramCache]: Analyzing trace with hash -733189512, now seen corresponding path program 72 times [2022-01-31 19:18:59,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:18:59,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [738091437] [2022-01-31 19:18:59,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:18:59,413 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:18:59,413 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:18:59,413 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:18:59,417 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:18:59,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:19:00,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:19:00,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:19:00,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-01-31 19:19:00,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:19:00,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-01-31 19:19:00,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:19:00,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-01-31 19:19:00,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:19:00,739 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:19:00,739 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:19:00,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [738091437] [2022-01-31 19:19:00,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [738091437] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:19:00,739 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:19:00,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [76] imperfect sequences [] total 76 [2022-01-31 19:19:00,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807774401] [2022-01-31 19:19:00,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:19:00,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2022-01-31 19:19:00,739 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:19:00,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2022-01-31 19:19:00,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2777, Invalid=2923, Unknown=0, NotChecked=0, Total=5700 [2022-01-31 19:19:00,740 INFO L87 Difference]: Start difference. First operand 175 states and 179 transitions. Second operand has 76 states, 76 states have (on average 2.1447368421052633) internal successors, (163), 75 states have internal predecessors, (163), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:19:02,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:19:02,146 INFO L93 Difference]: Finished difference Result 202 states and 210 transitions. [2022-01-31 19:19:02,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-01-31 19:19:02,146 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 2.1447368421052633) internal successors, (163), 75 states have internal predecessors, (163), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 192 [2022-01-31 19:19:02,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:19:02,147 INFO L225 Difference]: With dead ends: 202 [2022-01-31 19:19:02,147 INFO L226 Difference]: Without dead ends: 178 [2022-01-31 19:19:02,150 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2700 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=8325, Invalid=13727, Unknown=0, NotChecked=0, Total=22052 [2022-01-31 19:19:02,150 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 165 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:19:02,150 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [168 Valid, 52 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:19:02,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2022-01-31 19:19:02,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 177. [2022-01-31 19:19:02,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 169 states have (on average 1.017751479289941) internal successors, (172), 169 states have internal predecessors, (172), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:19:02,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 181 transitions. [2022-01-31 19:19:02,185 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 181 transitions. Word has length 192 [2022-01-31 19:19:02,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:19:02,185 INFO L470 AbstractCegarLoop]: Abstraction has 177 states and 181 transitions. [2022-01-31 19:19:02,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 2.1447368421052633) internal successors, (163), 75 states have internal predecessors, (163), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:19:02,186 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 181 transitions. [2022-01-31 19:19:02,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2022-01-31 19:19:02,186 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:19:02,186 INFO L514 BasicCegarLoop]: trace histogram [73, 73, 6, 6, 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] [2022-01-31 19:19:02,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2022-01-31 19:19:02,186 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:19:02,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:19:02,187 INFO L85 PathProgramCache]: Analyzing trace with hash 695283674, now seen corresponding path program 73 times [2022-01-31 19:19:02,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:19:02,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [501905808] [2022-01-31 19:19:02,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:19:02,188 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:19:02,188 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:19:02,188 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:19:02,208 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:19:02,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:19:04,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:19:04,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:19:04,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-01-31 19:19:04,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:19:04,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-01-31 19:19:04,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:19:04,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-01-31 19:19:04,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:19:04,017 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:19:04,017 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:19:04,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [501905808] [2022-01-31 19:19:04,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [501905808] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:19:04,017 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:19:04,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [77] imperfect sequences [] total 77 [2022-01-31 19:19:04,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927939697] [2022-01-31 19:19:04,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:19:04,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2022-01-31 19:19:04,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:19:04,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2022-01-31 19:19:04,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2852, Invalid=3000, Unknown=0, NotChecked=0, Total=5852 [2022-01-31 19:19:04,019 INFO L87 Difference]: Start difference. First operand 177 states and 181 transitions. Second operand has 77 states, 77 states have (on average 2.142857142857143) internal successors, (165), 76 states have internal predecessors, (165), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:19:06,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:19:06,295 INFO L93 Difference]: Finished difference Result 204 states and 212 transitions. [2022-01-31 19:19:06,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-01-31 19:19:06,295 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 2.142857142857143) internal successors, (165), 76 states have internal predecessors, (165), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 194 [2022-01-31 19:19:06,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:19:06,296 INFO L225 Difference]: With dead ends: 204 [2022-01-31 19:19:06,296 INFO L226 Difference]: Without dead ends: 180 [2022-01-31 19:19:06,297 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2774 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=8550, Invalid=14100, Unknown=0, NotChecked=0, Total=22650 [2022-01-31 19:19:06,297 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 167 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:19:06,297 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [170 Valid, 52 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:19:06,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2022-01-31 19:19:06,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 179. [2022-01-31 19:19:06,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 171 states have (on average 1.0175438596491229) internal successors, (174), 171 states have internal predecessors, (174), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:19:06,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 183 transitions. [2022-01-31 19:19:06,369 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 183 transitions. Word has length 194 [2022-01-31 19:19:06,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:19:06,369 INFO L470 AbstractCegarLoop]: Abstraction has 179 states and 183 transitions. [2022-01-31 19:19:06,369 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 2.142857142857143) internal successors, (165), 76 states have internal predecessors, (165), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:19:06,369 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 183 transitions. [2022-01-31 19:19:06,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2022-01-31 19:19:06,370 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:19:06,370 INFO L514 BasicCegarLoop]: trace histogram [74, 74, 6, 6, 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] [2022-01-31 19:19:06,371 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2022-01-31 19:19:06,371 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:19:06,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:19:06,371 INFO L85 PathProgramCache]: Analyzing trace with hash -931519300, now seen corresponding path program 74 times [2022-01-31 19:19:06,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:19:06,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1763192719] [2022-01-31 19:19:06,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:19:06,373 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:19:06,373 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:19:06,373 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:19:06,376 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:19:06,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:19:08,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:19:08,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:19:08,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 19:19:08,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:19:08,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-01-31 19:19:08,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:19:08,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-01-31 19:19:08,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:19:08,268 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:19:08,269 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:19:08,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1763192719] [2022-01-31 19:19:08,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1763192719] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:19:08,269 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:19:08,269 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [78] imperfect sequences [] total 78 [2022-01-31 19:19:08,269 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629923065] [2022-01-31 19:19:08,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:19:08,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2022-01-31 19:19:08,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:19:08,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2022-01-31 19:19:08,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2928, Invalid=3078, Unknown=0, NotChecked=0, Total=6006 [2022-01-31 19:19:08,270 INFO L87 Difference]: Start difference. First operand 179 states and 183 transitions. Second operand has 78 states, 78 states have (on average 2.141025641025641) internal successors, (167), 77 states have internal predecessors, (167), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:19:09,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:19:09,848 INFO L93 Difference]: Finished difference Result 206 states and 214 transitions. [2022-01-31 19:19:09,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-01-31 19:19:09,848 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 78 states have (on average 2.141025641025641) internal successors, (167), 77 states have internal predecessors, (167), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 196 [2022-01-31 19:19:09,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:19:09,849 INFO L225 Difference]: With dead ends: 206 [2022-01-31 19:19:09,849 INFO L226 Difference]: Without dead ends: 182 [2022-01-31 19:19:09,851 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2849 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=8778, Invalid=14478, Unknown=0, NotChecked=0, Total=23256 [2022-01-31 19:19:09,852 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 169 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:19:09,852 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [172 Valid, 47 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:19:09,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2022-01-31 19:19:09,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 181. [2022-01-31 19:19:09,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 173 states have (on average 1.0173410404624277) internal successors, (176), 173 states have internal predecessors, (176), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:19:09,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 185 transitions. [2022-01-31 19:19:09,920 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 185 transitions. Word has length 196 [2022-01-31 19:19:09,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:19:09,920 INFO L470 AbstractCegarLoop]: Abstraction has 181 states and 185 transitions. [2022-01-31 19:19:09,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 78 states have (on average 2.141025641025641) internal successors, (167), 77 states have internal predecessors, (167), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:19:09,921 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 185 transitions. [2022-01-31 19:19:09,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2022-01-31 19:19:09,921 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:19:09,921 INFO L514 BasicCegarLoop]: trace histogram [75, 75, 6, 6, 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] [2022-01-31 19:19:09,922 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2022-01-31 19:19:09,922 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:19:09,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:19:09,922 INFO L85 PathProgramCache]: Analyzing trace with hash -921081570, now seen corresponding path program 75 times [2022-01-31 19:19:09,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:19:09,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1218124367] [2022-01-31 19:19:09,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:19:09,923 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:19:09,923 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:19:09,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:19:09,927 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:19:09,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:19:11,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:19:11,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:19:11,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-01-31 19:19:11,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:19:11,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-01-31 19:19:11,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:19:11,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-01-31 19:19:11,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:19:11,153 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:19:11,153 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:19:11,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1218124367] [2022-01-31 19:19:11,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1218124367] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:19:11,153 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:19:11,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [79] imperfect sequences [] total 79 [2022-01-31 19:19:11,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343171318] [2022-01-31 19:19:11,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:19:11,154 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2022-01-31 19:19:11,154 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:19:11,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2022-01-31 19:19:11,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3005, Invalid=3157, Unknown=0, NotChecked=0, Total=6162 [2022-01-31 19:19:11,156 INFO L87 Difference]: Start difference. First operand 181 states and 185 transitions. Second operand has 79 states, 79 states have (on average 2.1392405063291138) internal successors, (169), 78 states have internal predecessors, (169), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:19:12,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:19:12,850 INFO L93 Difference]: Finished difference Result 208 states and 216 transitions. [2022-01-31 19:19:12,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-01-31 19:19:12,850 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 79 states have (on average 2.1392405063291138) internal successors, (169), 78 states have internal predecessors, (169), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 198 [2022-01-31 19:19:12,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:19:12,851 INFO L225 Difference]: With dead ends: 208 [2022-01-31 19:19:12,851 INFO L226 Difference]: Without dead ends: 184 [2022-01-31 19:19:12,853 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2925 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=9009, Invalid=14861, Unknown=0, NotChecked=0, Total=23870 [2022-01-31 19:19:12,853 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 171 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:19:12,853 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [174 Valid, 37 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:19:12,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2022-01-31 19:19:12,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 183. [2022-01-31 19:19:12,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 175 states have (on average 1.0171428571428571) internal successors, (178), 175 states have internal predecessors, (178), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:19:12,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 187 transitions. [2022-01-31 19:19:12,903 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 187 transitions. Word has length 198 [2022-01-31 19:19:12,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:19:12,904 INFO L470 AbstractCegarLoop]: Abstraction has 183 states and 187 transitions. [2022-01-31 19:19:12,904 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 79 states have (on average 2.1392405063291138) internal successors, (169), 78 states have internal predecessors, (169), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:19:12,904 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 187 transitions. [2022-01-31 19:19:12,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2022-01-31 19:19:12,905 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:19:12,905 INFO L514 BasicCegarLoop]: trace histogram [76, 76, 6, 6, 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] [2022-01-31 19:19:12,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2022-01-31 19:19:12,905 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:19:12,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:19:12,905 INFO L85 PathProgramCache]: Analyzing trace with hash 519642368, now seen corresponding path program 76 times [2022-01-31 19:19:12,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:19:12,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1364400165] [2022-01-31 19:19:12,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:19:12,907 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:19:12,907 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:19:12,907 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:19:12,910 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:19:12,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:19:14,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:19:14,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:19:14,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-01-31 19:19:14,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:19:14,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-01-31 19:19:14,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:19:14,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-01-31 19:19:14,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:19:14,120 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:19:14,120 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:19:14,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1364400165] [2022-01-31 19:19:14,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1364400165] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:19:14,120 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:19:14,120 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [80] imperfect sequences [] total 80 [2022-01-31 19:19:14,121 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774110575] [2022-01-31 19:19:14,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:19:14,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2022-01-31 19:19:14,127 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:19:14,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2022-01-31 19:19:14,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3083, Invalid=3237, Unknown=0, NotChecked=0, Total=6320 [2022-01-31 19:19:14,129 INFO L87 Difference]: Start difference. First operand 183 states and 187 transitions. Second operand has 80 states, 80 states have (on average 2.1375) internal successors, (171), 79 states have internal predecessors, (171), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:19:15,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:19:15,676 INFO L93 Difference]: Finished difference Result 210 states and 218 transitions. [2022-01-31 19:19:15,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-01-31 19:19:15,676 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 80 states have (on average 2.1375) internal successors, (171), 79 states have internal predecessors, (171), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 200 [2022-01-31 19:19:15,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:19:15,677 INFO L225 Difference]: With dead ends: 210 [2022-01-31 19:19:15,677 INFO L226 Difference]: Without dead ends: 186 [2022-01-31 19:19:15,678 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3002 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=9243, Invalid=15249, Unknown=0, NotChecked=0, Total=24492 [2022-01-31 19:19:15,678 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 173 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:19:15,679 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [176 Valid, 57 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:19:15,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2022-01-31 19:19:15,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 185. [2022-01-31 19:19:15,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 177 states have (on average 1.0169491525423728) internal successors, (180), 177 states have internal predecessors, (180), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:19:15,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 189 transitions. [2022-01-31 19:19:15,723 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 189 transitions. Word has length 200 [2022-01-31 19:19:15,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:19:15,723 INFO L470 AbstractCegarLoop]: Abstraction has 185 states and 189 transitions. [2022-01-31 19:19:15,723 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 80 states have (on average 2.1375) internal successors, (171), 79 states have internal predecessors, (171), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:19:15,723 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 189 transitions. [2022-01-31 19:19:15,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2022-01-31 19:19:15,724 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:19:15,724 INFO L514 BasicCegarLoop]: trace histogram [77, 77, 6, 6, 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] [2022-01-31 19:19:15,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2022-01-31 19:19:15,725 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:19:15,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:19:15,725 INFO L85 PathProgramCache]: Analyzing trace with hash 2075877474, now seen corresponding path program 77 times [2022-01-31 19:19:15,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:19:15,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1430320337] [2022-01-31 19:19:15,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:19:15,727 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:19:15,727 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:19:15,727 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:19:15,731 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:19:15,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:19:17,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:19:17,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:19:17,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-01-31 19:19:17,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:19:17,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-01-31 19:19:17,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:19:17,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-01-31 19:19:17,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:19:17,180 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:19:17,180 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:19:17,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1430320337] [2022-01-31 19:19:17,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1430320337] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:19:17,180 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:19:17,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [81] imperfect sequences [] total 81 [2022-01-31 19:19:17,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326745561] [2022-01-31 19:19:17,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:19:17,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2022-01-31 19:19:17,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:19:17,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2022-01-31 19:19:17,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3162, Invalid=3318, Unknown=0, NotChecked=0, Total=6480 [2022-01-31 19:19:17,183 INFO L87 Difference]: Start difference. First operand 185 states and 189 transitions. Second operand has 81 states, 81 states have (on average 2.1358024691358026) internal successors, (173), 80 states have internal predecessors, (173), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:19:18,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:19:18,938 INFO L93 Difference]: Finished difference Result 212 states and 220 transitions. [2022-01-31 19:19:18,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2022-01-31 19:19:18,938 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 81 states have (on average 2.1358024691358026) internal successors, (173), 80 states have internal predecessors, (173), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 202 [2022-01-31 19:19:18,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:19:18,939 INFO L225 Difference]: With dead ends: 212 [2022-01-31 19:19:18,939 INFO L226 Difference]: Without dead ends: 188 [2022-01-31 19:19:18,941 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3080 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=9480, Invalid=15642, Unknown=0, NotChecked=0, Total=25122 [2022-01-31 19:19:18,941 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 175 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:19:18,941 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [178 Valid, 47 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:19:18,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2022-01-31 19:19:18,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 187. [2022-01-31 19:19:18,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 179 states have (on average 1.0167597765363128) internal successors, (182), 179 states have internal predecessors, (182), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:19:18,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 191 transitions. [2022-01-31 19:19:18,980 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 191 transitions. Word has length 202 [2022-01-31 19:19:18,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:19:18,980 INFO L470 AbstractCegarLoop]: Abstraction has 187 states and 191 transitions. [2022-01-31 19:19:18,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 81 states have (on average 2.1358024691358026) internal successors, (173), 80 states have internal predecessors, (173), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:19:18,981 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 191 transitions. [2022-01-31 19:19:18,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2022-01-31 19:19:18,981 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:19:18,982 INFO L514 BasicCegarLoop]: trace histogram [78, 78, 6, 6, 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] [2022-01-31 19:19:18,982 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2022-01-31 19:19:18,982 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:19:18,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:19:18,982 INFO L85 PathProgramCache]: Analyzing trace with hash -1325771964, now seen corresponding path program 78 times [2022-01-31 19:19:18,982 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:19:18,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [96551390] [2022-01-31 19:19:18,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:19:18,983 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:19:18,983 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:19:18,984 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:19:18,988 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:19:19,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:19:20,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:19:20,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:19:20,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 19:19:20,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:19:20,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-01-31 19:19:20,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:19:20,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-01-31 19:19:20,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:19:20,863 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:19:20,863 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:19:20,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [96551390] [2022-01-31 19:19:20,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [96551390] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:19:20,864 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:19:20,864 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [82] imperfect sequences [] total 82 [2022-01-31 19:19:20,864 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123876553] [2022-01-31 19:19:20,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:19:20,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2022-01-31 19:19:20,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:19:20,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2022-01-31 19:19:20,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3242, Invalid=3400, Unknown=0, NotChecked=0, Total=6642 [2022-01-31 19:19:20,866 INFO L87 Difference]: Start difference. First operand 187 states and 191 transitions. Second operand has 82 states, 82 states have (on average 2.1341463414634148) internal successors, (175), 81 states have internal predecessors, (175), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:19:22,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:19:22,706 INFO L93 Difference]: Finished difference Result 214 states and 222 transitions. [2022-01-31 19:19:22,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2022-01-31 19:19:22,707 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 82 states have (on average 2.1341463414634148) internal successors, (175), 81 states have internal predecessors, (175), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 204 [2022-01-31 19:19:22,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:19:22,707 INFO L225 Difference]: With dead ends: 214 [2022-01-31 19:19:22,707 INFO L226 Difference]: Without dead ends: 190 [2022-01-31 19:19:22,709 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3159 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=9720, Invalid=16040, Unknown=0, NotChecked=0, Total=25760 [2022-01-31 19:19:22,709 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 177 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:19:22,710 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [180 Valid, 67 Invalid, 429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:19:22,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2022-01-31 19:19:22,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 189. [2022-01-31 19:19:22,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 181 states have (on average 1.0165745856353592) internal successors, (184), 181 states have internal predecessors, (184), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:19:22,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 193 transitions. [2022-01-31 19:19:22,779 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 193 transitions. Word has length 204 [2022-01-31 19:19:22,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:19:22,779 INFO L470 AbstractCegarLoop]: Abstraction has 189 states and 193 transitions. [2022-01-31 19:19:22,779 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 82 states, 82 states have (on average 2.1341463414634148) internal successors, (175), 81 states have internal predecessors, (175), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:19:22,779 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 193 transitions. [2022-01-31 19:19:22,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2022-01-31 19:19:22,795 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:19:22,796 INFO L514 BasicCegarLoop]: trace histogram [79, 79, 6, 6, 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] [2022-01-31 19:19:22,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2022-01-31 19:19:22,796 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:19:22,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:19:22,796 INFO L85 PathProgramCache]: Analyzing trace with hash -1840769626, now seen corresponding path program 79 times [2022-01-31 19:19:22,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:19:22,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1007958049] [2022-01-31 19:19:22,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:19:22,797 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:19:22,798 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:19:22,798 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:19:22,803 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:19:22,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:19:24,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:19:24,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:19:24,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-01-31 19:19:24,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:19:24,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-01-31 19:19:24,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:19:24,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-01-31 19:19:24,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:19:24,095 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:19:24,095 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:19:24,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1007958049] [2022-01-31 19:19:24,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1007958049] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:19:24,096 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:19:24,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [83] imperfect sequences [] total 83 [2022-01-31 19:19:24,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833111135] [2022-01-31 19:19:24,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:19:24,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2022-01-31 19:19:24,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:19:24,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2022-01-31 19:19:24,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3323, Invalid=3483, Unknown=0, NotChecked=0, Total=6806 [2022-01-31 19:19:24,098 INFO L87 Difference]: Start difference. First operand 189 states and 193 transitions. Second operand has 83 states, 83 states have (on average 2.1325301204819276) internal successors, (177), 82 states have internal predecessors, (177), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:19:26,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:19:26,007 INFO L93 Difference]: Finished difference Result 216 states and 224 transitions. [2022-01-31 19:19:26,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2022-01-31 19:19:26,007 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 83 states have (on average 2.1325301204819276) internal successors, (177), 82 states have internal predecessors, (177), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 206 [2022-01-31 19:19:26,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:19:26,008 INFO L225 Difference]: With dead ends: 216 [2022-01-31 19:19:26,008 INFO L226 Difference]: Without dead ends: 192 [2022-01-31 19:19:26,009 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3239 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=9963, Invalid=16443, Unknown=0, NotChecked=0, Total=26406 [2022-01-31 19:19:26,009 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 179 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:19:26,009 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [182 Valid, 52 Invalid, 365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:19:26,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2022-01-31 19:19:26,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 191. [2022-01-31 19:19:26,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 183 states have (on average 1.0163934426229508) internal successors, (186), 183 states have internal predecessors, (186), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:19:26,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 195 transitions. [2022-01-31 19:19:26,051 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 195 transitions. Word has length 206 [2022-01-31 19:19:26,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:19:26,051 INFO L470 AbstractCegarLoop]: Abstraction has 191 states and 195 transitions. [2022-01-31 19:19:26,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 83 states have (on average 2.1325301204819276) internal successors, (177), 82 states have internal predecessors, (177), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:19:26,051 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 195 transitions. [2022-01-31 19:19:26,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2022-01-31 19:19:26,052 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:19:26,052 INFO L514 BasicCegarLoop]: trace histogram [80, 80, 6, 6, 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] [2022-01-31 19:19:26,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2022-01-31 19:19:26,052 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:19:26,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:19:26,052 INFO L85 PathProgramCache]: Analyzing trace with hash 1462683528, now seen corresponding path program 80 times [2022-01-31 19:19:26,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:19:26,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1933722378] [2022-01-31 19:19:26,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:19:26,054 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:19:26,054 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:19:26,054 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:19:26,058 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:19:26,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:19:27,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:19:27,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:19:27,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-01-31 19:19:27,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:19:27,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-01-31 19:19:27,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:19:27,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-01-31 19:19:27,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:19:27,356 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:19:27,356 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:19:27,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1933722378] [2022-01-31 19:19:27,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1933722378] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:19:27,357 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:19:27,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [84] imperfect sequences [] total 84 [2022-01-31 19:19:27,357 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344097263] [2022-01-31 19:19:27,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:19:27,357 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2022-01-31 19:19:27,357 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:19:27,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2022-01-31 19:19:27,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3405, Invalid=3567, Unknown=0, NotChecked=0, Total=6972 [2022-01-31 19:19:27,358 INFO L87 Difference]: Start difference. First operand 191 states and 195 transitions. Second operand has 84 states, 84 states have (on average 2.130952380952381) internal successors, (179), 83 states have internal predecessors, (179), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:19:28,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:19:28,989 INFO L93 Difference]: Finished difference Result 218 states and 226 transitions. [2022-01-31 19:19:28,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-01-31 19:19:28,990 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 84 states have (on average 2.130952380952381) internal successors, (179), 83 states have internal predecessors, (179), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 208 [2022-01-31 19:19:28,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:19:28,990 INFO L225 Difference]: With dead ends: 218 [2022-01-31 19:19:28,990 INFO L226 Difference]: Without dead ends: 194 [2022-01-31 19:19:28,992 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3320 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=10209, Invalid=16851, Unknown=0, NotChecked=0, Total=27060 [2022-01-31 19:19:28,992 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 181 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:19:28,992 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [184 Valid, 57 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:19:28,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2022-01-31 19:19:29,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 193. [2022-01-31 19:19:29,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 185 states have (on average 1.0162162162162163) internal successors, (188), 185 states have internal predecessors, (188), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:19:29,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 197 transitions. [2022-01-31 19:19:29,034 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 197 transitions. Word has length 208 [2022-01-31 19:19:29,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:19:29,034 INFO L470 AbstractCegarLoop]: Abstraction has 193 states and 197 transitions. [2022-01-31 19:19:29,034 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 84 states have (on average 2.130952380952381) internal successors, (179), 83 states have internal predecessors, (179), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:19:29,035 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 197 transitions. [2022-01-31 19:19:29,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2022-01-31 19:19:29,036 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:19:29,036 INFO L514 BasicCegarLoop]: trace histogram [81, 81, 6, 6, 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] [2022-01-31 19:19:29,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2022-01-31 19:19:29,036 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:19:29,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:19:29,036 INFO L85 PathProgramCache]: Analyzing trace with hash 2100332778, now seen corresponding path program 81 times [2022-01-31 19:19:29,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:19:29,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1081512067] [2022-01-31 19:19:29,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:19:29,038 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:19:29,038 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:19:29,038 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:19:29,043 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:19:29,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:19:30,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:19:30,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:19:30,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-01-31 19:19:30,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:19:30,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-01-31 19:19:30,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:19:30,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-01-31 19:19:30,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:19:30,527 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:19:30,527 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:19:30,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1081512067] [2022-01-31 19:19:30,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1081512067] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:19:30,527 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:19:30,528 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [85] imperfect sequences [] total 85 [2022-01-31 19:19:30,528 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360403753] [2022-01-31 19:19:30,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:19:30,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 85 states [2022-01-31 19:19:30,529 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:19:30,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2022-01-31 19:19:30,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3488, Invalid=3652, Unknown=0, NotChecked=0, Total=7140 [2022-01-31 19:19:30,530 INFO L87 Difference]: Start difference. First operand 193 states and 197 transitions. Second operand has 85 states, 85 states have (on average 2.1294117647058823) internal successors, (181), 84 states have internal predecessors, (181), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:19:32,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:19:32,214 INFO L93 Difference]: Finished difference Result 220 states and 228 transitions. [2022-01-31 19:19:32,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2022-01-31 19:19:32,214 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 85 states have (on average 2.1294117647058823) internal successors, (181), 84 states have internal predecessors, (181), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 210 [2022-01-31 19:19:32,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:19:32,215 INFO L225 Difference]: With dead ends: 220 [2022-01-31 19:19:32,215 INFO L226 Difference]: Without dead ends: 196 [2022-01-31 19:19:32,217 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3402 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=10458, Invalid=17264, Unknown=0, NotChecked=0, Total=27722 [2022-01-31 19:19:32,218 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 183 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:19:32,218 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [186 Valid, 47 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:19:32,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2022-01-31 19:19:32,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 195. [2022-01-31 19:19:32,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 187 states have (on average 1.0160427807486632) internal successors, (190), 187 states have internal predecessors, (190), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:19:32,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 199 transitions. [2022-01-31 19:19:32,286 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 199 transitions. Word has length 210 [2022-01-31 19:19:32,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:19:32,286 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 199 transitions. [2022-01-31 19:19:32,286 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 85 states, 85 states have (on average 2.1294117647058823) internal successors, (181), 84 states have internal predecessors, (181), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:19:32,286 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 199 transitions. [2022-01-31 19:19:32,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2022-01-31 19:19:32,287 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:19:32,287 INFO L514 BasicCegarLoop]: trace histogram [82, 82, 6, 6, 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] [2022-01-31 19:19:32,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2022-01-31 19:19:32,287 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:19:32,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:19:32,288 INFO L85 PathProgramCache]: Analyzing trace with hash 700938700, now seen corresponding path program 82 times [2022-01-31 19:19:32,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:19:32,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1482402998] [2022-01-31 19:19:32,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:19:32,289 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:19:32,289 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:19:32,289 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:19:32,293 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:19:32,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:19:33,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:19:33,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:19:33,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-31 19:19:33,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:19:33,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-01-31 19:19:33,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:19:33,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-01-31 19:19:33,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:19:33,679 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:19:33,679 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:19:33,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1482402998] [2022-01-31 19:19:33,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1482402998] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:19:33,679 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:19:33,679 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [86] imperfect sequences [] total 86 [2022-01-31 19:19:33,679 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592443418] [2022-01-31 19:19:33,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:19:33,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2022-01-31 19:19:33,679 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:19:33,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2022-01-31 19:19:33,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3572, Invalid=3738, Unknown=0, NotChecked=0, Total=7310 [2022-01-31 19:19:33,681 INFO L87 Difference]: Start difference. First operand 195 states and 199 transitions. Second operand has 86 states, 86 states have (on average 2.127906976744186) internal successors, (183), 85 states have internal predecessors, (183), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:19:35,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:19:35,578 INFO L93 Difference]: Finished difference Result 222 states and 230 transitions. [2022-01-31 19:19:35,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-01-31 19:19:35,578 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 2.127906976744186) internal successors, (183), 85 states have internal predecessors, (183), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 212 [2022-01-31 19:19:35,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:19:35,579 INFO L225 Difference]: With dead ends: 222 [2022-01-31 19:19:35,579 INFO L226 Difference]: Without dead ends: 198 [2022-01-31 19:19:35,581 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3485 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=10710, Invalid=17682, Unknown=0, NotChecked=0, Total=28392 [2022-01-31 19:19:35,582 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 185 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:19:35,582 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [188 Valid, 62 Invalid, 414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:19:35,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2022-01-31 19:19:35,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 197. [2022-01-31 19:19:35,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 189 states have (on average 1.0158730158730158) internal successors, (192), 189 states have internal predecessors, (192), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:19:35,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 201 transitions. [2022-01-31 19:19:35,627 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 201 transitions. Word has length 212 [2022-01-31 19:19:35,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:19:35,627 INFO L470 AbstractCegarLoop]: Abstraction has 197 states and 201 transitions. [2022-01-31 19:19:35,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 86 states have (on average 2.127906976744186) internal successors, (183), 85 states have internal predecessors, (183), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:19:35,627 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 201 transitions. [2022-01-31 19:19:35,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2022-01-31 19:19:35,628 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:19:35,628 INFO L514 BasicCegarLoop]: trace histogram [83, 83, 6, 6, 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] [2022-01-31 19:19:35,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2022-01-31 19:19:35,628 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:19:35,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:19:35,629 INFO L85 PathProgramCache]: Analyzing trace with hash 207993390, now seen corresponding path program 83 times [2022-01-31 19:19:35,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:19:35,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1754417235] [2022-01-31 19:19:35,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:19:35,631 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:19:35,631 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:19:35,631 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:19:35,635 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:19:35,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:19:37,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:19:37,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:19:37,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-01-31 19:19:37,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:19:37,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-01-31 19:19:37,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:19:37,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-01-31 19:19:37,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:19:37,033 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:19:37,034 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:19:37,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1754417235] [2022-01-31 19:19:37,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1754417235] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:19:37,034 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:19:37,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [87] imperfect sequences [] total 87 [2022-01-31 19:19:37,034 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631959796] [2022-01-31 19:19:37,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:19:37,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 87 states [2022-01-31 19:19:37,034 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:19:37,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2022-01-31 19:19:37,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3657, Invalid=3825, Unknown=0, NotChecked=0, Total=7482 [2022-01-31 19:19:37,036 INFO L87 Difference]: Start difference. First operand 197 states and 201 transitions. Second operand has 87 states, 87 states have (on average 2.1264367816091956) internal successors, (185), 86 states have internal predecessors, (185), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:19:39,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:19:39,375 INFO L93 Difference]: Finished difference Result 224 states and 232 transitions. [2022-01-31 19:19:39,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2022-01-31 19:19:39,375 INFO L78 Accepts]: Start accepts. Automaton has has 87 states, 87 states have (on average 2.1264367816091956) internal successors, (185), 86 states have internal predecessors, (185), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 214 [2022-01-31 19:19:39,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:19:39,376 INFO L225 Difference]: With dead ends: 224 [2022-01-31 19:19:39,376 INFO L226 Difference]: Without dead ends: 200 [2022-01-31 19:19:39,378 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3569 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=10965, Invalid=18105, Unknown=0, NotChecked=0, Total=29070 [2022-01-31 19:19:39,378 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 187 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:19:39,378 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [190 Valid, 47 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:19:39,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2022-01-31 19:19:39,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 199. [2022-01-31 19:19:39,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 191 states have (on average 1.0157068062827226) internal successors, (194), 191 states have internal predecessors, (194), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:19:39,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 203 transitions. [2022-01-31 19:19:39,423 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 203 transitions. Word has length 214 [2022-01-31 19:19:39,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:19:39,423 INFO L470 AbstractCegarLoop]: Abstraction has 199 states and 203 transitions. [2022-01-31 19:19:39,423 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 87 states, 87 states have (on average 2.1264367816091956) internal successors, (185), 86 states have internal predecessors, (185), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:19:39,423 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 203 transitions. [2022-01-31 19:19:39,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2022-01-31 19:19:39,424 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:19:39,424 INFO L514 BasicCegarLoop]: trace histogram [84, 84, 6, 6, 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] [2022-01-31 19:19:39,424 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2022-01-31 19:19:39,424 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:19:39,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:19:39,425 INFO L85 PathProgramCache]: Analyzing trace with hash -1066046960, now seen corresponding path program 84 times [2022-01-31 19:19:39,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:19:39,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [584329098] [2022-01-31 19:19:39,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:19:39,426 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:19:39,426 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:19:39,426 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:19:39,430 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:19:39,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:19:41,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:19:41,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:19:41,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-01-31 19:19:41,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:19:41,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-01-31 19:19:41,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:19:41,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-01-31 19:19:41,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:19:41,376 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:19:41,376 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:19:41,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [584329098] [2022-01-31 19:19:41,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [584329098] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:19:41,376 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:19:41,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [88] imperfect sequences [] total 88 [2022-01-31 19:19:41,376 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396563315] [2022-01-31 19:19:41,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:19:41,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2022-01-31 19:19:41,377 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:19:41,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2022-01-31 19:19:41,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3743, Invalid=3913, Unknown=0, NotChecked=0, Total=7656 [2022-01-31 19:19:41,378 INFO L87 Difference]: Start difference. First operand 199 states and 203 transitions. Second operand has 88 states, 88 states have (on average 2.125) internal successors, (187), 87 states have internal predecessors, (187), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:19:43,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:19:43,216 INFO L93 Difference]: Finished difference Result 226 states and 234 transitions. [2022-01-31 19:19:43,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-01-31 19:19:43,216 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 88 states have (on average 2.125) internal successors, (187), 87 states have internal predecessors, (187), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 216 [2022-01-31 19:19:43,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:19:43,217 INFO L225 Difference]: With dead ends: 226 [2022-01-31 19:19:43,217 INFO L226 Difference]: Without dead ends: 202 [2022-01-31 19:19:43,219 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3654 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=11223, Invalid=18533, Unknown=0, NotChecked=0, Total=29756 [2022-01-31 19:19:43,227 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 189 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:19:43,227 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [192 Valid, 57 Invalid, 404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 308 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:19:43,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2022-01-31 19:19:43,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 201. [2022-01-31 19:19:43,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 193 states have (on average 1.0155440414507773) internal successors, (196), 193 states have internal predecessors, (196), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:19:43,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 205 transitions. [2022-01-31 19:19:43,272 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 205 transitions. Word has length 216 [2022-01-31 19:19:43,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:19:43,272 INFO L470 AbstractCegarLoop]: Abstraction has 201 states and 205 transitions. [2022-01-31 19:19:43,273 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 88 states have (on average 2.125) internal successors, (187), 87 states have internal predecessors, (187), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:19:43,273 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 205 transitions. [2022-01-31 19:19:43,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2022-01-31 19:19:43,273 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:19:43,273 INFO L514 BasicCegarLoop]: trace histogram [85, 85, 6, 6, 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] [2022-01-31 19:19:43,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2022-01-31 19:19:43,274 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:19:43,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:19:43,274 INFO L85 PathProgramCache]: Analyzing trace with hash -1353143950, now seen corresponding path program 85 times [2022-01-31 19:19:43,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:19:43,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [240748104] [2022-01-31 19:19:43,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:19:43,277 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:19:43,278 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:19:43,278 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:19:43,282 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:19:43,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:19:45,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:19:45,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:19:45,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-01-31 19:19:45,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:19:45,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-01-31 19:19:45,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:19:45,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-01-31 19:19:45,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:19:45,259 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:19:45,259 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:19:45,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [240748104] [2022-01-31 19:19:45,259 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [240748104] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:19:45,259 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:19:45,259 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [89] imperfect sequences [] total 89 [2022-01-31 19:19:45,259 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756220885] [2022-01-31 19:19:45,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:19:45,260 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2022-01-31 19:19:45,260 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:19:45,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2022-01-31 19:19:45,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3830, Invalid=4002, Unknown=0, NotChecked=0, Total=7832 [2022-01-31 19:19:45,262 INFO L87 Difference]: Start difference. First operand 201 states and 205 transitions. Second operand has 89 states, 89 states have (on average 2.1235955056179776) internal successors, (189), 88 states have internal predecessors, (189), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:19:47,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:19:47,362 INFO L93 Difference]: Finished difference Result 228 states and 236 transitions. [2022-01-31 19:19:47,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2022-01-31 19:19:47,363 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 89 states have (on average 2.1235955056179776) internal successors, (189), 88 states have internal predecessors, (189), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 218 [2022-01-31 19:19:47,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:19:47,363 INFO L225 Difference]: With dead ends: 228 [2022-01-31 19:19:47,363 INFO L226 Difference]: Without dead ends: 204 [2022-01-31 19:19:47,365 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3740 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=11484, Invalid=18966, Unknown=0, NotChecked=0, Total=30450 [2022-01-31 19:19:47,366 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 191 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:19:47,366 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [194 Valid, 52 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:19:47,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2022-01-31 19:19:47,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 203. [2022-01-31 19:19:47,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 195 states have (on average 1.0153846153846153) internal successors, (198), 195 states have internal predecessors, (198), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:19:47,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 207 transitions. [2022-01-31 19:19:47,439 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 207 transitions. Word has length 218 [2022-01-31 19:19:47,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:19:47,440 INFO L470 AbstractCegarLoop]: Abstraction has 203 states and 207 transitions. [2022-01-31 19:19:47,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 89 states, 89 states have (on average 2.1235955056179776) internal successors, (189), 88 states have internal predecessors, (189), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:19:47,440 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 207 transitions. [2022-01-31 19:19:47,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2022-01-31 19:19:47,441 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:19:47,441 INFO L514 BasicCegarLoop]: trace histogram [86, 86, 6, 6, 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] [2022-01-31 19:19:47,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2022-01-31 19:19:47,441 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:19:47,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:19:47,441 INFO L85 PathProgramCache]: Analyzing trace with hash 1919522900, now seen corresponding path program 86 times [2022-01-31 19:19:47,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:19:47,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [458508143] [2022-01-31 19:19:47,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:19:47,443 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:19:47,443 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:19:47,443 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:19:47,447 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:19:47,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:19:49,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:19:49,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:19:49,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-01-31 19:19:49,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:19:49,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-01-31 19:19:49,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:19:49,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-01-31 19:19:49,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:19:49,291 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:19:49,291 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:19:49,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [458508143] [2022-01-31 19:19:49,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [458508143] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:19:49,291 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:19:49,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [90] imperfect sequences [] total 90 [2022-01-31 19:19:49,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237369677] [2022-01-31 19:19:49,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:19:49,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 90 states [2022-01-31 19:19:49,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:19:49,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2022-01-31 19:19:49,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3918, Invalid=4092, Unknown=0, NotChecked=0, Total=8010 [2022-01-31 19:19:49,294 INFO L87 Difference]: Start difference. First operand 203 states and 207 transitions. Second operand has 90 states, 90 states have (on average 2.1222222222222222) internal successors, (191), 89 states have internal predecessors, (191), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:19:51,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:19:51,419 INFO L93 Difference]: Finished difference Result 230 states and 238 transitions. [2022-01-31 19:19:51,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-01-31 19:19:51,419 INFO L78 Accepts]: Start accepts. Automaton has has 90 states, 90 states have (on average 2.1222222222222222) internal successors, (191), 89 states have internal predecessors, (191), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 220 [2022-01-31 19:19:51,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:19:51,420 INFO L225 Difference]: With dead ends: 230 [2022-01-31 19:19:51,420 INFO L226 Difference]: Without dead ends: 206 [2022-01-31 19:19:51,422 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3827 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=11748, Invalid=19404, Unknown=0, NotChecked=0, Total=31152 [2022-01-31 19:19:51,423 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 193 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:19:51,423 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [196 Valid, 47 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:19:51,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2022-01-31 19:19:51,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 205. [2022-01-31 19:19:51,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 197 states have (on average 1.015228426395939) internal successors, (200), 197 states have internal predecessors, (200), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:19:51,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 209 transitions. [2022-01-31 19:19:51,471 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 209 transitions. Word has length 220 [2022-01-31 19:19:51,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:19:51,471 INFO L470 AbstractCegarLoop]: Abstraction has 205 states and 209 transitions. [2022-01-31 19:19:51,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 90 states, 90 states have (on average 2.1222222222222222) internal successors, (191), 89 states have internal predecessors, (191), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:19:51,471 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 209 transitions. [2022-01-31 19:19:51,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2022-01-31 19:19:51,472 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:19:51,472 INFO L514 BasicCegarLoop]: trace histogram [87, 87, 6, 6, 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] [2022-01-31 19:19:51,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2022-01-31 19:19:51,472 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:19:51,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:19:51,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1258662218, now seen corresponding path program 87 times [2022-01-31 19:19:51,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:19:51,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1212060376] [2022-01-31 19:19:51,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:19:51,474 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:19:51,474 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:19:51,474 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:19:51,478 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:19:51,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:19:53,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:19:53,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:19:53,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-01-31 19:19:53,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:19:53,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-01-31 19:19:53,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:19:53,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-01-31 19:19:53,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:19:53,434 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:19:53,435 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:19:53,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1212060376] [2022-01-31 19:19:53,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1212060376] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:19:53,435 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:19:53,435 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [91] imperfect sequences [] total 91 [2022-01-31 19:19:53,435 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589850466] [2022-01-31 19:19:53,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:19:53,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 91 states [2022-01-31 19:19:53,435 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:19:53,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2022-01-31 19:19:53,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4007, Invalid=4183, Unknown=0, NotChecked=0, Total=8190 [2022-01-31 19:19:53,438 INFO L87 Difference]: Start difference. First operand 205 states and 209 transitions. Second operand has 91 states, 91 states have (on average 2.120879120879121) internal successors, (193), 90 states have internal predecessors, (193), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:19:55,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:19:55,963 INFO L93 Difference]: Finished difference Result 232 states and 240 transitions. [2022-01-31 19:19:55,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2022-01-31 19:19:55,964 INFO L78 Accepts]: Start accepts. Automaton has has 91 states, 91 states have (on average 2.120879120879121) internal successors, (193), 90 states have internal predecessors, (193), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 222 [2022-01-31 19:19:55,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:19:55,964 INFO L225 Difference]: With dead ends: 232 [2022-01-31 19:19:55,964 INFO L226 Difference]: Without dead ends: 208 [2022-01-31 19:19:55,967 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3915 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=12015, Invalid=19847, Unknown=0, NotChecked=0, Total=31862 [2022-01-31 19:19:55,967 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 195 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:19:55,967 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [198 Valid, 52 Invalid, 388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:19:55,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2022-01-31 19:19:56,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 207. [2022-01-31 19:19:56,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 199 states have (on average 1.015075376884422) internal successors, (202), 199 states have internal predecessors, (202), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:19:56,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 211 transitions. [2022-01-31 19:19:56,016 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 211 transitions. Word has length 222 [2022-01-31 19:19:56,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:19:56,016 INFO L470 AbstractCegarLoop]: Abstraction has 207 states and 211 transitions. [2022-01-31 19:19:56,017 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 91 states, 91 states have (on average 2.120879120879121) internal successors, (193), 90 states have internal predecessors, (193), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:19:56,017 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 211 transitions. [2022-01-31 19:19:56,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2022-01-31 19:19:56,017 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:19:56,017 INFO L514 BasicCegarLoop]: trace histogram [88, 88, 6, 6, 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] [2022-01-31 19:19:56,018 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2022-01-31 19:19:56,018 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:19:56,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:19:56,018 INFO L85 PathProgramCache]: Analyzing trace with hash -1772813160, now seen corresponding path program 88 times [2022-01-31 19:19:56,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:19:56,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [464565924] [2022-01-31 19:19:56,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:19:56,019 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:19:56,019 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:19:56,019 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:19:56,024 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:19:56,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:19:57,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:19:57,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:19:57,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-01-31 19:19:57,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:19:57,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-01-31 19:19:57,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:19:57,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-01-31 19:19:57,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:19:57,660 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:19:57,660 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:19:57,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [464565924] [2022-01-31 19:19:57,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [464565924] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:19:57,661 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:19:57,661 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [92] imperfect sequences [] total 92 [2022-01-31 19:19:57,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119363508] [2022-01-31 19:19:57,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:19:57,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 92 states [2022-01-31 19:19:57,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:19:57,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2022-01-31 19:19:57,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4097, Invalid=4275, Unknown=0, NotChecked=0, Total=8372 [2022-01-31 19:19:57,664 INFO L87 Difference]: Start difference. First operand 207 states and 211 transitions. Second operand has 92 states, 92 states have (on average 2.119565217391304) internal successors, (195), 91 states have internal predecessors, (195), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:19:59,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:19:59,954 INFO L93 Difference]: Finished difference Result 234 states and 242 transitions. [2022-01-31 19:19:59,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2022-01-31 19:19:59,955 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 92 states have (on average 2.119565217391304) internal successors, (195), 91 states have internal predecessors, (195), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 224 [2022-01-31 19:19:59,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:19:59,955 INFO L225 Difference]: With dead ends: 234 [2022-01-31 19:19:59,955 INFO L226 Difference]: Without dead ends: 210 [2022-01-31 19:19:59,958 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4004 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=12285, Invalid=20295, Unknown=0, NotChecked=0, Total=32580 [2022-01-31 19:19:59,958 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 197 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:19:59,958 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [200 Valid, 67 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 360 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:19:59,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2022-01-31 19:20:00,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 209. [2022-01-31 19:20:00,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 201 states have (on average 1.0149253731343284) internal successors, (204), 201 states have internal predecessors, (204), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:20:00,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 213 transitions. [2022-01-31 19:20:00,016 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 213 transitions. Word has length 224 [2022-01-31 19:20:00,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:20:00,016 INFO L470 AbstractCegarLoop]: Abstraction has 209 states and 213 transitions. [2022-01-31 19:20:00,016 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 92 states, 92 states have (on average 2.119565217391304) internal successors, (195), 91 states have internal predecessors, (195), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:20:00,016 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 213 transitions. [2022-01-31 19:20:00,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2022-01-31 19:20:00,017 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:20:00,017 INFO L514 BasicCegarLoop]: trace histogram [89, 89, 6, 6, 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] [2022-01-31 19:20:00,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2022-01-31 19:20:00,017 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:20:00,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:20:00,018 INFO L85 PathProgramCache]: Analyzing trace with hash -1950629382, now seen corresponding path program 89 times [2022-01-31 19:20:00,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:20:00,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1127713193] [2022-01-31 19:20:00,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:20:00,019 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:20:00,019 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:20:00,019 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:20:00,024 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:20:00,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:20:02,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:20:02,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:20:02,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-01-31 19:20:02,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:20:02,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-01-31 19:20:02,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:20:02,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-01-31 19:20:02,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:20:02,170 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:20:02,170 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:20:02,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1127713193] [2022-01-31 19:20:02,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1127713193] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:20:02,170 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:20:02,170 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [93] imperfect sequences [] total 93 [2022-01-31 19:20:02,170 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519155322] [2022-01-31 19:20:02,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:20:02,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 93 states [2022-01-31 19:20:02,170 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:20:02,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2022-01-31 19:20:02,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4188, Invalid=4368, Unknown=0, NotChecked=0, Total=8556 [2022-01-31 19:20:02,172 INFO L87 Difference]: Start difference. First operand 209 states and 213 transitions. Second operand has 93 states, 93 states have (on average 2.118279569892473) internal successors, (197), 92 states have internal predecessors, (197), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:20:04,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:20:04,969 INFO L93 Difference]: Finished difference Result 236 states and 244 transitions. [2022-01-31 19:20:04,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2022-01-31 19:20:04,969 INFO L78 Accepts]: Start accepts. Automaton has has 93 states, 93 states have (on average 2.118279569892473) internal successors, (197), 92 states have internal predecessors, (197), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 226 [2022-01-31 19:20:04,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:20:04,970 INFO L225 Difference]: With dead ends: 236 [2022-01-31 19:20:04,970 INFO L226 Difference]: Without dead ends: 212 [2022-01-31 19:20:04,973 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4094 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=12558, Invalid=20748, Unknown=0, NotChecked=0, Total=33306 [2022-01-31 19:20:04,973 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 199 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:20:04,973 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [202 Valid, 57 Invalid, 418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:20:04,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2022-01-31 19:20:05,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 211. [2022-01-31 19:20:05,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 203 states have (on average 1.0147783251231528) internal successors, (206), 203 states have internal predecessors, (206), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:20:05,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 215 transitions. [2022-01-31 19:20:05,046 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 215 transitions. Word has length 226 [2022-01-31 19:20:05,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:20:05,047 INFO L470 AbstractCegarLoop]: Abstraction has 211 states and 215 transitions. [2022-01-31 19:20:05,047 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 93 states, 93 states have (on average 2.118279569892473) internal successors, (197), 92 states have internal predecessors, (197), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:20:05,047 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 215 transitions. [2022-01-31 19:20:05,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2022-01-31 19:20:05,061 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:20:05,061 INFO L514 BasicCegarLoop]: trace histogram [90, 90, 6, 6, 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] [2022-01-31 19:20:05,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2022-01-31 19:20:05,062 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:20:05,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:20:05,062 INFO L85 PathProgramCache]: Analyzing trace with hash -1033326884, now seen corresponding path program 90 times [2022-01-31 19:20:05,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:20:05,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1062928995] [2022-01-31 19:20:05,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:20:05,063 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:20:05,063 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:20:05,063 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:20:05,074 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:20:05,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:20:06,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:20:06,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:20:06,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-01-31 19:20:06,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:20:06,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-01-31 19:20:06,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:20:06,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-01-31 19:20:06,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:20:06,980 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:20:06,980 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:20:06,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1062928995] [2022-01-31 19:20:06,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1062928995] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:20:06,980 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:20:06,980 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [94] imperfect sequences [] total 94 [2022-01-31 19:20:06,980 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422414751] [2022-01-31 19:20:06,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:20:06,981 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2022-01-31 19:20:06,981 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:20:06,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2022-01-31 19:20:06,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4280, Invalid=4462, Unknown=0, NotChecked=0, Total=8742 [2022-01-31 19:20:06,982 INFO L87 Difference]: Start difference. First operand 211 states and 215 transitions. Second operand has 94 states, 94 states have (on average 2.117021276595745) internal successors, (199), 93 states have internal predecessors, (199), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:20:09,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:20:09,522 INFO L93 Difference]: Finished difference Result 238 states and 246 transitions. [2022-01-31 19:20:09,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2022-01-31 19:20:09,523 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 94 states have (on average 2.117021276595745) internal successors, (199), 93 states have internal predecessors, (199), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 228 [2022-01-31 19:20:09,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:20:09,523 INFO L225 Difference]: With dead ends: 238 [2022-01-31 19:20:09,523 INFO L226 Difference]: Without dead ends: 214 [2022-01-31 19:20:09,525 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4185 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=12834, Invalid=21206, Unknown=0, NotChecked=0, Total=34040 [2022-01-31 19:20:09,525 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 201 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:20:09,525 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [204 Valid, 52 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:20:09,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2022-01-31 19:20:09,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 213. [2022-01-31 19:20:09,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 205 states have (on average 1.0146341463414634) internal successors, (208), 205 states have internal predecessors, (208), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:20:09,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 217 transitions. [2022-01-31 19:20:09,577 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 217 transitions. Word has length 228 [2022-01-31 19:20:09,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:20:09,577 INFO L470 AbstractCegarLoop]: Abstraction has 213 states and 217 transitions. [2022-01-31 19:20:09,577 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 94 states have (on average 2.117021276595745) internal successors, (199), 93 states have internal predecessors, (199), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:20:09,577 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 217 transitions. [2022-01-31 19:20:09,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2022-01-31 19:20:09,578 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:20:09,578 INFO L514 BasicCegarLoop]: trace histogram [91, 91, 6, 6, 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] [2022-01-31 19:20:09,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2022-01-31 19:20:09,578 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:20:09,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:20:09,579 INFO L85 PathProgramCache]: Analyzing trace with hash 26078014, now seen corresponding path program 91 times [2022-01-31 19:20:09,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:20:09,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [703972741] [2022-01-31 19:20:09,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:20:09,580 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:20:09,580 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:20:09,580 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:20:09,586 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:20:09,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:20:11,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:20:11,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:20:11,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-01-31 19:20:11,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:20:11,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-01-31 19:20:11,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:20:11,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2022-01-31 19:20:11,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:20:11,702 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:20:11,703 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:20:11,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [703972741] [2022-01-31 19:20:11,703 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [703972741] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:20:11,703 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:20:11,703 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [95] imperfect sequences [] total 95 [2022-01-31 19:20:11,703 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889733291] [2022-01-31 19:20:11,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:20:11,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 95 states [2022-01-31 19:20:11,703 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:20:11,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2022-01-31 19:20:11,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4373, Invalid=4557, Unknown=0, NotChecked=0, Total=8930 [2022-01-31 19:20:11,705 INFO L87 Difference]: Start difference. First operand 213 states and 217 transitions. Second operand has 95 states, 95 states have (on average 2.1157894736842104) internal successors, (201), 94 states have internal predecessors, (201), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:20:13,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:20:13,810 INFO L93 Difference]: Finished difference Result 240 states and 248 transitions. [2022-01-31 19:20:13,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2022-01-31 19:20:13,810 INFO L78 Accepts]: Start accepts. Automaton has has 95 states, 95 states have (on average 2.1157894736842104) internal successors, (201), 94 states have internal predecessors, (201), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 230 [2022-01-31 19:20:13,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:20:13,811 INFO L225 Difference]: With dead ends: 240 [2022-01-31 19:20:13,811 INFO L226 Difference]: Without dead ends: 216 [2022-01-31 19:20:13,813 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4277 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=13113, Invalid=21669, Unknown=0, NotChecked=0, Total=34782 [2022-01-31 19:20:13,814 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 203 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:20:13,814 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [206 Valid, 62 Invalid, 449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 344 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:20:13,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2022-01-31 19:20:13,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 215. [2022-01-31 19:20:13,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 207 states have (on average 1.0144927536231885) internal successors, (210), 207 states have internal predecessors, (210), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:20:13,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 219 transitions. [2022-01-31 19:20:13,869 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 219 transitions. Word has length 230 [2022-01-31 19:20:13,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:20:13,869 INFO L470 AbstractCegarLoop]: Abstraction has 215 states and 219 transitions. [2022-01-31 19:20:13,869 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 95 states, 95 states have (on average 2.1157894736842104) internal successors, (201), 94 states have internal predecessors, (201), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:20:13,869 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 219 transitions. [2022-01-31 19:20:13,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2022-01-31 19:20:13,870 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:20:13,870 INFO L514 BasicCegarLoop]: trace histogram [92, 92, 6, 6, 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] [2022-01-31 19:20:13,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2022-01-31 19:20:13,870 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:20:13,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:20:13,871 INFO L85 PathProgramCache]: Analyzing trace with hash 206935840, now seen corresponding path program 92 times [2022-01-31 19:20:13,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:20:13,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [551411142] [2022-01-31 19:20:13,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:20:13,872 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:20:13,872 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:20:13,873 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:20:13,878 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:20:13,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:20:15,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:20:15,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:20:15,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-01-31 19:20:15,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:20:15,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-01-31 19:20:15,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:20:15,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-01-31 19:20:15,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:20:15,937 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:20:15,937 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:20:15,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [551411142] [2022-01-31 19:20:15,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [551411142] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:20:15,937 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:20:15,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [96] imperfect sequences [] total 96 [2022-01-31 19:20:15,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262189543] [2022-01-31 19:20:15,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:20:15,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2022-01-31 19:20:15,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:20:15,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2022-01-31 19:20:15,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4467, Invalid=4653, Unknown=0, NotChecked=0, Total=9120 [2022-01-31 19:20:15,940 INFO L87 Difference]: Start difference. First operand 215 states and 219 transitions. Second operand has 96 states, 96 states have (on average 2.1145833333333335) internal successors, (203), 95 states have internal predecessors, (203), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:20:18,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:20:18,099 INFO L93 Difference]: Finished difference Result 242 states and 250 transitions. [2022-01-31 19:20:18,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-01-31 19:20:18,099 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 2.1145833333333335) internal successors, (203), 95 states have internal predecessors, (203), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 232 [2022-01-31 19:20:18,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:20:18,100 INFO L225 Difference]: With dead ends: 242 [2022-01-31 19:20:18,100 INFO L226 Difference]: Without dead ends: 218 [2022-01-31 19:20:18,103 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4370 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=13395, Invalid=22137, Unknown=0, NotChecked=0, Total=35532 [2022-01-31 19:20:18,103 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 205 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:20:18,103 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [208 Valid, 67 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:20:18,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2022-01-31 19:20:18,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 217. [2022-01-31 19:20:18,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 209 states have (on average 1.014354066985646) internal successors, (212), 209 states have internal predecessors, (212), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:20:18,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 221 transitions. [2022-01-31 19:20:18,167 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 221 transitions. Word has length 232 [2022-01-31 19:20:18,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:20:18,167 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 221 transitions. [2022-01-31 19:20:18,167 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 2.1145833333333335) internal successors, (203), 95 states have internal predecessors, (203), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:20:18,167 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 221 transitions. [2022-01-31 19:20:18,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2022-01-31 19:20:18,168 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:20:18,168 INFO L514 BasicCegarLoop]: trace histogram [93, 93, 6, 6, 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] [2022-01-31 19:20:18,168 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2022-01-31 19:20:18,168 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:20:18,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:20:18,169 INFO L85 PathProgramCache]: Analyzing trace with hash -2082352510, now seen corresponding path program 93 times [2022-01-31 19:20:18,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:20:18,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1255221100] [2022-01-31 19:20:18,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:20:18,170 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:20:18,170 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:20:18,170 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:20:18,175 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:20:18,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:20:20,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:20:20,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:20:20,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-01-31 19:20:20,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:20:20,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-01-31 19:20:20,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:20:20,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-01-31 19:20:20,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:20:20,256 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:20:20,256 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:20:20,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1255221100] [2022-01-31 19:20:20,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1255221100] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:20:20,256 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:20:20,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [97] imperfect sequences [] total 97 [2022-01-31 19:20:20,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870888668] [2022-01-31 19:20:20,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:20:20,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2022-01-31 19:20:20,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:20:20,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2022-01-31 19:20:20,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4562, Invalid=4750, Unknown=0, NotChecked=0, Total=9312 [2022-01-31 19:20:20,261 INFO L87 Difference]: Start difference. First operand 217 states and 221 transitions. Second operand has 97 states, 97 states have (on average 2.11340206185567) internal successors, (205), 96 states have internal predecessors, (205), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:20:22,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:20:22,567 INFO L93 Difference]: Finished difference Result 244 states and 252 transitions. [2022-01-31 19:20:22,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2022-01-31 19:20:22,568 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 97 states have (on average 2.11340206185567) internal successors, (205), 96 states have internal predecessors, (205), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 234 [2022-01-31 19:20:22,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:20:22,568 INFO L225 Difference]: With dead ends: 244 [2022-01-31 19:20:22,568 INFO L226 Difference]: Without dead ends: 220 [2022-01-31 19:20:22,570 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4464 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=13680, Invalid=22610, Unknown=0, NotChecked=0, Total=36290 [2022-01-31 19:20:22,570 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 207 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:20:22,570 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [210 Valid, 67 Invalid, 471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 370 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:20:22,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2022-01-31 19:20:22,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 219. [2022-01-31 19:20:22,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 211 states have (on average 1.014218009478673) internal successors, (214), 211 states have internal predecessors, (214), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:20:22,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 223 transitions. [2022-01-31 19:20:22,625 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 223 transitions. Word has length 234 [2022-01-31 19:20:22,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:20:22,625 INFO L470 AbstractCegarLoop]: Abstraction has 219 states and 223 transitions. [2022-01-31 19:20:22,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 97 states have (on average 2.11340206185567) internal successors, (205), 96 states have internal predecessors, (205), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:20:22,625 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 223 transitions. [2022-01-31 19:20:22,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-01-31 19:20:22,626 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:20:22,626 INFO L514 BasicCegarLoop]: trace histogram [94, 94, 6, 6, 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] [2022-01-31 19:20:22,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2022-01-31 19:20:22,626 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:20:22,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:20:22,626 INFO L85 PathProgramCache]: Analyzing trace with hash 1229765988, now seen corresponding path program 94 times [2022-01-31 19:20:22,626 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:20:22,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1589160494] [2022-01-31 19:20:22,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:20:22,628 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:20:22,628 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:20:22,628 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:20:22,633 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:20:22,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:20:24,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:20:24,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:20:24,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-01-31 19:20:24,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:20:24,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-01-31 19:20:24,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:20:24,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-01-31 19:20:24,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:20:24,868 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:20:24,868 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:20:24,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1589160494] [2022-01-31 19:20:24,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1589160494] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:20:24,868 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:20:24,868 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [98] imperfect sequences [] total 98 [2022-01-31 19:20:24,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066890123] [2022-01-31 19:20:24,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:20:24,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2022-01-31 19:20:24,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:20:24,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2022-01-31 19:20:24,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4658, Invalid=4848, Unknown=0, NotChecked=0, Total=9506 [2022-01-31 19:20:24,883 INFO L87 Difference]: Start difference. First operand 219 states and 223 transitions. Second operand has 98 states, 98 states have (on average 2.1122448979591835) internal successors, (207), 97 states have internal predecessors, (207), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:20:27,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:20:27,306 INFO L93 Difference]: Finished difference Result 246 states and 254 transitions. [2022-01-31 19:20:27,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2022-01-31 19:20:27,306 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 98 states have (on average 2.1122448979591835) internal successors, (207), 97 states have internal predecessors, (207), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 236 [2022-01-31 19:20:27,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:20:27,307 INFO L225 Difference]: With dead ends: 246 [2022-01-31 19:20:27,307 INFO L226 Difference]: Without dead ends: 222 [2022-01-31 19:20:27,309 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4559 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=13968, Invalid=23088, Unknown=0, NotChecked=0, Total=37056 [2022-01-31 19:20:27,309 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 209 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:20:27,310 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [212 Valid, 42 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:20:27,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2022-01-31 19:20:27,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 221. [2022-01-31 19:20:27,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 213 states have (on average 1.0140845070422535) internal successors, (216), 213 states have internal predecessors, (216), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:20:27,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 225 transitions. [2022-01-31 19:20:27,365 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 225 transitions. Word has length 236 [2022-01-31 19:20:27,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:20:27,366 INFO L470 AbstractCegarLoop]: Abstraction has 221 states and 225 transitions. [2022-01-31 19:20:27,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 98 states have (on average 2.1122448979591835) internal successors, (207), 97 states have internal predecessors, (207), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:20:27,366 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 225 transitions. [2022-01-31 19:20:27,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2022-01-31 19:20:27,366 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:20:27,367 INFO L514 BasicCegarLoop]: trace histogram [95, 95, 6, 6, 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] [2022-01-31 19:20:27,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2022-01-31 19:20:27,367 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:20:27,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:20:27,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1604876230, now seen corresponding path program 95 times [2022-01-31 19:20:27,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:20:27,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1840091004] [2022-01-31 19:20:27,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:20:27,368 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:20:27,369 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:20:27,369 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:20:27,374 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:20:27,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:20:29,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:20:29,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:20:29,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-01-31 19:20:29,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:20:29,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-01-31 19:20:29,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:20:29,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2022-01-31 19:20:29,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:20:29,436 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:20:29,437 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:20:29,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1840091004] [2022-01-31 19:20:29,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1840091004] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:20:29,437 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:20:29,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [99] imperfect sequences [] total 99 [2022-01-31 19:20:29,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406753795] [2022-01-31 19:20:29,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:20:29,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 99 states [2022-01-31 19:20:29,437 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:20:29,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2022-01-31 19:20:29,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4755, Invalid=4947, Unknown=0, NotChecked=0, Total=9702 [2022-01-31 19:20:29,440 INFO L87 Difference]: Start difference. First operand 221 states and 225 transitions. Second operand has 99 states, 99 states have (on average 2.111111111111111) internal successors, (209), 98 states have internal predecessors, (209), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:20:31,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:20:31,733 INFO L93 Difference]: Finished difference Result 248 states and 256 transitions. [2022-01-31 19:20:31,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2022-01-31 19:20:31,733 INFO L78 Accepts]: Start accepts. Automaton has has 99 states, 99 states have (on average 2.111111111111111) internal successors, (209), 98 states have internal predecessors, (209), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 238 [2022-01-31 19:20:31,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:20:31,734 INFO L225 Difference]: With dead ends: 248 [2022-01-31 19:20:31,734 INFO L226 Difference]: Without dead ends: 224 [2022-01-31 19:20:31,736 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4655 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=14259, Invalid=23571, Unknown=0, NotChecked=0, Total=37830 [2022-01-31 19:20:31,736 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 211 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:20:31,736 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [214 Valid, 77 Invalid, 523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 418 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:20:31,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2022-01-31 19:20:31,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 223. [2022-01-31 19:20:31,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 215 states have (on average 1.013953488372093) internal successors, (218), 215 states have internal predecessors, (218), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:20:31,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 227 transitions. [2022-01-31 19:20:31,795 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 227 transitions. Word has length 238 [2022-01-31 19:20:31,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:20:31,795 INFO L470 AbstractCegarLoop]: Abstraction has 223 states and 227 transitions. [2022-01-31 19:20:31,795 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 99 states, 99 states have (on average 2.111111111111111) internal successors, (209), 98 states have internal predecessors, (209), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:20:31,796 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 227 transitions. [2022-01-31 19:20:31,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2022-01-31 19:20:31,796 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:20:31,796 INFO L514 BasicCegarLoop]: trace histogram [96, 96, 6, 6, 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] [2022-01-31 19:20:31,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2022-01-31 19:20:31,797 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:20:31,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:20:31,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1308565928, now seen corresponding path program 96 times [2022-01-31 19:20:31,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:20:31,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1485165368] [2022-01-31 19:20:31,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:20:31,802 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:20:31,802 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:20:31,802 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:20:31,808 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:20:31,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:20:33,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:20:33,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:20:33,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-01-31 19:20:33,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:20:33,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-01-31 19:20:33,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:20:33,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-01-31 19:20:33,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:20:33,617 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:20:33,617 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:20:33,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1485165368] [2022-01-31 19:20:33,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1485165368] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:20:33,617 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:20:33,617 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [100] imperfect sequences [] total 100 [2022-01-31 19:20:33,617 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035628685] [2022-01-31 19:20:33,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:20:33,617 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 100 states [2022-01-31 19:20:33,617 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:20:33,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2022-01-31 19:20:33,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4853, Invalid=5047, Unknown=0, NotChecked=0, Total=9900 [2022-01-31 19:20:33,619 INFO L87 Difference]: Start difference. First operand 223 states and 227 transitions. Second operand has 100 states, 100 states have (on average 2.11) internal successors, (211), 99 states have internal predecessors, (211), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:20:35,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:20:35,913 INFO L93 Difference]: Finished difference Result 250 states and 258 transitions. [2022-01-31 19:20:35,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2022-01-31 19:20:35,913 INFO L78 Accepts]: Start accepts. Automaton has has 100 states, 100 states have (on average 2.11) internal successors, (211), 99 states have internal predecessors, (211), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 240 [2022-01-31 19:20:35,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:20:35,914 INFO L225 Difference]: With dead ends: 250 [2022-01-31 19:20:35,914 INFO L226 Difference]: Without dead ends: 226 [2022-01-31 19:20:35,917 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4752 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=14553, Invalid=24059, Unknown=0, NotChecked=0, Total=38612 [2022-01-31 19:20:35,917 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 213 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:20:35,917 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [216 Valid, 52 Invalid, 416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:20:35,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2022-01-31 19:20:35,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 225. [2022-01-31 19:20:35,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 217 states have (on average 1.0138248847926268) internal successors, (220), 217 states have internal predecessors, (220), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:20:35,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 229 transitions. [2022-01-31 19:20:35,995 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 229 transitions. Word has length 240 [2022-01-31 19:20:35,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:20:35,995 INFO L470 AbstractCegarLoop]: Abstraction has 225 states and 229 transitions. [2022-01-31 19:20:35,996 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 100 states, 100 states have (on average 2.11) internal successors, (211), 99 states have internal predecessors, (211), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:20:35,996 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 229 transitions. [2022-01-31 19:20:35,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2022-01-31 19:20:35,997 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:20:35,997 INFO L514 BasicCegarLoop]: trace histogram [97, 97, 6, 6, 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] [2022-01-31 19:20:35,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2022-01-31 19:20:35,997 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:20:35,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:20:35,997 INFO L85 PathProgramCache]: Analyzing trace with hash 22207242, now seen corresponding path program 97 times [2022-01-31 19:20:35,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:20:35,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [227918232] [2022-01-31 19:20:35,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:20:35,998 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:20:35,999 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:20:35,999 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:20:36,004 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:20:36,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:20:37,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:20:37,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:20:37,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-01-31 19:20:37,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:20:37,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-01-31 19:20:37,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:20:37,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-01-31 19:20:37,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:20:37,869 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:20:37,869 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:20:37,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [227918232] [2022-01-31 19:20:37,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [227918232] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:20:37,869 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:20:37,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [101] imperfect sequences [] total 101 [2022-01-31 19:20:37,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170932310] [2022-01-31 19:20:37,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:20:37,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 101 states [2022-01-31 19:20:37,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:20:37,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2022-01-31 19:20:37,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4952, Invalid=5148, Unknown=0, NotChecked=0, Total=10100 [2022-01-31 19:20:37,872 INFO L87 Difference]: Start difference. First operand 225 states and 229 transitions. Second operand has 101 states, 101 states have (on average 2.108910891089109) internal successors, (213), 100 states have internal predecessors, (213), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:20:40,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:20:40,203 INFO L93 Difference]: Finished difference Result 252 states and 260 transitions. [2022-01-31 19:20:40,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2022-01-31 19:20:40,204 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 101 states have (on average 2.108910891089109) internal successors, (213), 100 states have internal predecessors, (213), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 242 [2022-01-31 19:20:40,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:20:40,204 INFO L225 Difference]: With dead ends: 252 [2022-01-31 19:20:40,204 INFO L226 Difference]: Without dead ends: 228 [2022-01-31 19:20:40,206 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4850 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=14850, Invalid=24552, Unknown=0, NotChecked=0, Total=39402 [2022-01-31 19:20:40,206 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 215 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:20:40,207 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [218 Valid, 47 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:20:40,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2022-01-31 19:20:40,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 227. [2022-01-31 19:20:40,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 219 states have (on average 1.0136986301369864) internal successors, (222), 219 states have internal predecessors, (222), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:20:40,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 231 transitions. [2022-01-31 19:20:40,273 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 231 transitions. Word has length 242 [2022-01-31 19:20:40,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:20:40,273 INFO L470 AbstractCegarLoop]: Abstraction has 227 states and 231 transitions. [2022-01-31 19:20:40,273 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 101 states, 101 states have (on average 2.108910891089109) internal successors, (213), 100 states have internal predecessors, (213), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:20:40,273 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 231 transitions. [2022-01-31 19:20:40,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2022-01-31 19:20:40,274 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:20:40,274 INFO L514 BasicCegarLoop]: trace histogram [98, 98, 6, 6, 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] [2022-01-31 19:20:40,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2022-01-31 19:20:40,274 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:20:40,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:20:40,275 INFO L85 PathProgramCache]: Analyzing trace with hash 782091244, now seen corresponding path program 98 times [2022-01-31 19:20:40,275 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:20:40,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [40035189] [2022-01-31 19:20:40,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:20:40,276 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:20:40,276 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:20:40,276 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:20:40,282 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:20:40,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:20:42,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:20:42,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:20:42,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-01-31 19:20:42,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:20:42,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-01-31 19:20:42,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:20:42,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-01-31 19:20:42,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:20:42,715 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:20:42,716 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:20:42,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [40035189] [2022-01-31 19:20:42,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [40035189] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:20:42,716 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:20:42,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [102] imperfect sequences [] total 102 [2022-01-31 19:20:42,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035390949] [2022-01-31 19:20:42,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:20:42,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 102 states [2022-01-31 19:20:42,716 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:20:42,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2022-01-31 19:20:42,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5052, Invalid=5250, Unknown=0, NotChecked=0, Total=10302 [2022-01-31 19:20:42,718 INFO L87 Difference]: Start difference. First operand 227 states and 231 transitions. Second operand has 102 states, 102 states have (on average 2.107843137254902) internal successors, (215), 101 states have internal predecessors, (215), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:20:45,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:20:45,701 INFO L93 Difference]: Finished difference Result 254 states and 262 transitions. [2022-01-31 19:20:45,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2022-01-31 19:20:45,701 INFO L78 Accepts]: Start accepts. Automaton has has 102 states, 102 states have (on average 2.107843137254902) internal successors, (215), 101 states have internal predecessors, (215), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 244 [2022-01-31 19:20:45,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:20:45,702 INFO L225 Difference]: With dead ends: 254 [2022-01-31 19:20:45,702 INFO L226 Difference]: Without dead ends: 230 [2022-01-31 19:20:45,704 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4949 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=15150, Invalid=25050, Unknown=0, NotChecked=0, Total=40200 [2022-01-31 19:20:45,705 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 217 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:20:45,705 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [220 Valid, 62 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:20:45,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-01-31 19:20:45,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 229. [2022-01-31 19:20:45,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 221 states have (on average 1.0135746606334841) internal successors, (224), 221 states have internal predecessors, (224), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:20:45,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 233 transitions. [2022-01-31 19:20:45,766 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 233 transitions. Word has length 244 [2022-01-31 19:20:45,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:20:45,766 INFO L470 AbstractCegarLoop]: Abstraction has 229 states and 233 transitions. [2022-01-31 19:20:45,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 102 states, 102 states have (on average 2.107843137254902) internal successors, (215), 101 states have internal predecessors, (215), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:20:45,766 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 233 transitions. [2022-01-31 19:20:45,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2022-01-31 19:20:45,778 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:20:45,778 INFO L514 BasicCegarLoop]: trace histogram [99, 99, 6, 6, 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] [2022-01-31 19:20:45,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2022-01-31 19:20:45,779 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:20:45,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:20:45,779 INFO L85 PathProgramCache]: Analyzing trace with hash 886176846, now seen corresponding path program 99 times [2022-01-31 19:20:45,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:20:45,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1007366474] [2022-01-31 19:20:45,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:20:45,780 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:20:45,780 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:20:45,780 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:20:45,786 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:20:45,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:20:47,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:20:47,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:20:47,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-01-31 19:20:47,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:20:47,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-01-31 19:20:47,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:20:47,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2022-01-31 19:20:47,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:20:47,690 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:20:47,690 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:20:47,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1007366474] [2022-01-31 19:20:47,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1007366474] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:20:47,691 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:20:47,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [103] imperfect sequences [] total 103 [2022-01-31 19:20:47,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831391887] [2022-01-31 19:20:47,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:20:47,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2022-01-31 19:20:47,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:20:47,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2022-01-31 19:20:47,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5153, Invalid=5353, Unknown=0, NotChecked=0, Total=10506 [2022-01-31 19:20:47,693 INFO L87 Difference]: Start difference. First operand 229 states and 233 transitions. Second operand has 103 states, 103 states have (on average 2.1067961165048543) internal successors, (217), 102 states have internal predecessors, (217), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:20:50,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:20:50,171 INFO L93 Difference]: Finished difference Result 256 states and 264 transitions. [2022-01-31 19:20:50,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2022-01-31 19:20:50,171 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 103 states have (on average 2.1067961165048543) internal successors, (217), 102 states have internal predecessors, (217), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 246 [2022-01-31 19:20:50,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:20:50,172 INFO L225 Difference]: With dead ends: 256 [2022-01-31 19:20:50,172 INFO L226 Difference]: Without dead ends: 232 [2022-01-31 19:20:50,174 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5049 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=15453, Invalid=25553, Unknown=0, NotChecked=0, Total=41006 [2022-01-31 19:20:50,174 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 219 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:20:50,174 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [222 Valid, 57 Invalid, 449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 338 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:20:50,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2022-01-31 19:20:50,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 231. [2022-01-31 19:20:50,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 223 states have (on average 1.0134529147982063) internal successors, (226), 223 states have internal predecessors, (226), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:20:50,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 235 transitions. [2022-01-31 19:20:50,236 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 235 transitions. Word has length 246 [2022-01-31 19:20:50,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:20:50,237 INFO L470 AbstractCegarLoop]: Abstraction has 231 states and 235 transitions. [2022-01-31 19:20:50,237 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 103 states, 103 states have (on average 2.1067961165048543) internal successors, (217), 102 states have internal predecessors, (217), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:20:50,237 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 235 transitions. [2022-01-31 19:20:50,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2022-01-31 19:20:50,238 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:20:50,238 INFO L514 BasicCegarLoop]: trace histogram [100, 100, 6, 6, 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] [2022-01-31 19:20:50,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2022-01-31 19:20:50,238 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:20:50,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:20:50,238 INFO L85 PathProgramCache]: Analyzing trace with hash 2128192560, now seen corresponding path program 100 times [2022-01-31 19:20:50,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:20:50,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1989850513] [2022-01-31 19:20:50,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:20:50,239 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:20:50,240 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:20:50,240 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:20:50,245 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:20:50,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:20:52,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:20:52,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:20:52,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-01-31 19:20:52,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:20:52,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-01-31 19:20:52,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:20:52,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-01-31 19:20:52,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:20:52,582 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:20:52,583 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:20:52,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1989850513] [2022-01-31 19:20:52,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1989850513] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:20:52,583 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:20:52,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [104] imperfect sequences [] total 104 [2022-01-31 19:20:52,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810512583] [2022-01-31 19:20:52,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:20:52,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 104 states [2022-01-31 19:20:52,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:20:52,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2022-01-31 19:20:52,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5255, Invalid=5457, Unknown=0, NotChecked=0, Total=10712 [2022-01-31 19:20:52,586 INFO L87 Difference]: Start difference. First operand 231 states and 235 transitions. Second operand has 104 states, 104 states have (on average 2.105769230769231) internal successors, (219), 103 states have internal predecessors, (219), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:20:55,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:20:55,156 INFO L93 Difference]: Finished difference Result 258 states and 266 transitions. [2022-01-31 19:20:55,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2022-01-31 19:20:55,156 INFO L78 Accepts]: Start accepts. Automaton has has 104 states, 104 states have (on average 2.105769230769231) internal successors, (219), 103 states have internal predecessors, (219), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 248 [2022-01-31 19:20:55,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:20:55,157 INFO L225 Difference]: With dead ends: 258 [2022-01-31 19:20:55,157 INFO L226 Difference]: Without dead ends: 234 [2022-01-31 19:20:55,158 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5150 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=15759, Invalid=26061, Unknown=0, NotChecked=0, Total=41820 [2022-01-31 19:20:55,159 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 221 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 362 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:20:55,159 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [224 Valid, 62 Invalid, 469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 362 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:20:55,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2022-01-31 19:20:55,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 233. [2022-01-31 19:20:55,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 225 states have (on average 1.0133333333333334) internal successors, (228), 225 states have internal predecessors, (228), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:20:55,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 237 transitions. [2022-01-31 19:20:55,222 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 237 transitions. Word has length 248 [2022-01-31 19:20:55,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:20:55,223 INFO L470 AbstractCegarLoop]: Abstraction has 233 states and 237 transitions. [2022-01-31 19:20:55,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 104 states, 104 states have (on average 2.105769230769231) internal successors, (219), 103 states have internal predecessors, (219), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:20:55,223 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 237 transitions. [2022-01-31 19:20:55,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2022-01-31 19:20:55,223 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:20:55,224 INFO L514 BasicCegarLoop]: trace histogram [101, 101, 6, 6, 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] [2022-01-31 19:20:55,224 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2022-01-31 19:20:55,224 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:20:55,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:20:55,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1704385426, now seen corresponding path program 101 times [2022-01-31 19:20:55,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:20:55,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1208153483] [2022-01-31 19:20:55,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:20:55,225 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:20:55,225 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:20:55,225 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:20:55,231 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:20:55,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:20:57,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:20:57,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:20:57,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-01-31 19:20:57,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:20:57,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-01-31 19:20:57,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:20:57,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-01-31 19:20:57,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:20:57,303 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:20:57,303 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:20:57,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1208153483] [2022-01-31 19:20:57,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1208153483] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:20:57,304 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:20:57,304 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [105] imperfect sequences [] total 105 [2022-01-31 19:20:57,304 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210993159] [2022-01-31 19:20:57,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:20:57,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 105 states [2022-01-31 19:20:57,304 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:20:57,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2022-01-31 19:20:57,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5358, Invalid=5562, Unknown=0, NotChecked=0, Total=10920 [2022-01-31 19:20:57,306 INFO L87 Difference]: Start difference. First operand 233 states and 237 transitions. Second operand has 105 states, 105 states have (on average 2.104761904761905) internal successors, (221), 104 states have internal predecessors, (221), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:21:00,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:21:00,491 INFO L93 Difference]: Finished difference Result 260 states and 268 transitions. [2022-01-31 19:21:00,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2022-01-31 19:21:00,492 INFO L78 Accepts]: Start accepts. Automaton has has 105 states, 105 states have (on average 2.104761904761905) internal successors, (221), 104 states have internal predecessors, (221), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 250 [2022-01-31 19:21:00,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:21:00,492 INFO L225 Difference]: With dead ends: 260 [2022-01-31 19:21:00,492 INFO L226 Difference]: Without dead ends: 236 [2022-01-31 19:21:00,495 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 205 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5252 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=16068, Invalid=26574, Unknown=0, NotChecked=0, Total=42642 [2022-01-31 19:21:00,495 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 223 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 320 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:21:00,495 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [226 Valid, 52 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 320 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:21:00,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2022-01-31 19:21:00,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 235. [2022-01-31 19:21:00,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 227 states have (on average 1.013215859030837) internal successors, (230), 227 states have internal predecessors, (230), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:21:00,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 239 transitions. [2022-01-31 19:21:00,570 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 239 transitions. Word has length 250 [2022-01-31 19:21:00,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:21:00,570 INFO L470 AbstractCegarLoop]: Abstraction has 235 states and 239 transitions. [2022-01-31 19:21:00,570 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 105 states, 105 states have (on average 2.104761904761905) internal successors, (221), 104 states have internal predecessors, (221), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:21:00,570 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 239 transitions. [2022-01-31 19:21:00,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2022-01-31 19:21:00,571 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:21:00,571 INFO L514 BasicCegarLoop]: trace histogram [102, 102, 6, 6, 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] [2022-01-31 19:21:00,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2022-01-31 19:21:00,571 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:21:00,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:21:00,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1847344524, now seen corresponding path program 102 times [2022-01-31 19:21:00,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:21:00,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1174588968] [2022-01-31 19:21:00,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:21:00,573 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:21:00,573 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:21:00,573 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:21:00,579 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:21:00,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:21:02,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:21:02,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:21:02,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-01-31 19:21:02,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:21:02,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-01-31 19:21:02,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:21:02,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-01-31 19:21:02,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:21:02,657 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:21:02,658 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:21:02,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1174588968] [2022-01-31 19:21:02,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1174588968] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:21:02,658 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:21:02,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [106] imperfect sequences [] total 106 [2022-01-31 19:21:02,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119578314] [2022-01-31 19:21:02,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:21:02,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 106 states [2022-01-31 19:21:02,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:21:02,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2022-01-31 19:21:02,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5462, Invalid=5668, Unknown=0, NotChecked=0, Total=11130 [2022-01-31 19:21:02,660 INFO L87 Difference]: Start difference. First operand 235 states and 239 transitions. Second operand has 106 states, 106 states have (on average 2.1037735849056602) internal successors, (223), 105 states have internal predecessors, (223), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:21:05,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:21:05,287 INFO L93 Difference]: Finished difference Result 262 states and 270 transitions. [2022-01-31 19:21:05,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2022-01-31 19:21:05,287 INFO L78 Accepts]: Start accepts. Automaton has has 106 states, 106 states have (on average 2.1037735849056602) internal successors, (223), 105 states have internal predecessors, (223), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 252 [2022-01-31 19:21:05,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:21:05,288 INFO L225 Difference]: With dead ends: 262 [2022-01-31 19:21:05,288 INFO L226 Difference]: Without dead ends: 238 [2022-01-31 19:21:05,291 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 207 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5355 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=16380, Invalid=27092, Unknown=0, NotChecked=0, Total=43472 [2022-01-31 19:21:05,291 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 225 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:21:05,291 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [228 Valid, 57 Invalid, 455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 344 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:21:05,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2022-01-31 19:21:05,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 237. [2022-01-31 19:21:05,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 229 states have (on average 1.0131004366812226) internal successors, (232), 229 states have internal predecessors, (232), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:21:05,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 241 transitions. [2022-01-31 19:21:05,366 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 241 transitions. Word has length 252 [2022-01-31 19:21:05,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:21:05,366 INFO L470 AbstractCegarLoop]: Abstraction has 237 states and 241 transitions. [2022-01-31 19:21:05,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 106 states, 106 states have (on average 2.1037735849056602) internal successors, (223), 105 states have internal predecessors, (223), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:21:05,367 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 241 transitions. [2022-01-31 19:21:05,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2022-01-31 19:21:05,367 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:21:05,367 INFO L514 BasicCegarLoop]: trace histogram [103, 103, 6, 6, 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] [2022-01-31 19:21:05,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2022-01-31 19:21:05,368 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:21:05,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:21:05,368 INFO L85 PathProgramCache]: Analyzing trace with hash -560826154, now seen corresponding path program 103 times [2022-01-31 19:21:05,368 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:21:05,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [770669087] [2022-01-31 19:21:05,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:21:05,369 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:21:05,369 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:21:05,369 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:21:05,375 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:21:05,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:21:07,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:21:07,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:21:07,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-01-31 19:21:07,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:21:07,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-01-31 19:21:07,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:21:07,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2022-01-31 19:21:07,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:21:07,455 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:21:07,455 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:21:07,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [770669087] [2022-01-31 19:21:07,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [770669087] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:21:07,455 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:21:07,455 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [107] imperfect sequences [] total 107 [2022-01-31 19:21:07,455 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107873819] [2022-01-31 19:21:07,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:21:07,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 107 states [2022-01-31 19:21:07,455 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:21:07,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2022-01-31 19:21:07,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5567, Invalid=5775, Unknown=0, NotChecked=0, Total=11342 [2022-01-31 19:21:07,457 INFO L87 Difference]: Start difference. First operand 237 states and 241 transitions. Second operand has 107 states, 107 states have (on average 2.102803738317757) internal successors, (225), 106 states have internal predecessors, (225), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:21:10,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:21:10,064 INFO L93 Difference]: Finished difference Result 264 states and 272 transitions. [2022-01-31 19:21:10,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2022-01-31 19:21:10,065 INFO L78 Accepts]: Start accepts. Automaton has has 107 states, 107 states have (on average 2.102803738317757) internal successors, (225), 106 states have internal predecessors, (225), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 254 [2022-01-31 19:21:10,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:21:10,065 INFO L225 Difference]: With dead ends: 264 [2022-01-31 19:21:10,065 INFO L226 Difference]: Without dead ends: 240 [2022-01-31 19:21:10,068 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 209 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5459 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=16695, Invalid=27615, Unknown=0, NotChecked=0, Total=44310 [2022-01-31 19:21:10,068 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 227 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:21:10,068 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [230 Valid, 62 Invalid, 478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:21:10,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2022-01-31 19:21:10,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 239. [2022-01-31 19:21:10,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 231 states have (on average 1.0129870129870129) internal successors, (234), 231 states have internal predecessors, (234), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:21:10,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 243 transitions. [2022-01-31 19:21:10,135 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 243 transitions. Word has length 254 [2022-01-31 19:21:10,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:21:10,136 INFO L470 AbstractCegarLoop]: Abstraction has 239 states and 243 transitions. [2022-01-31 19:21:10,136 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 107 states, 107 states have (on average 2.102803738317757) internal successors, (225), 106 states have internal predecessors, (225), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:21:10,136 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 243 transitions. [2022-01-31 19:21:10,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2022-01-31 19:21:10,137 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:21:10,137 INFO L514 BasicCegarLoop]: trace histogram [104, 104, 6, 6, 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] [2022-01-31 19:21:10,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2022-01-31 19:21:10,137 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:21:10,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:21:10,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1167253832, now seen corresponding path program 104 times [2022-01-31 19:21:10,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:21:10,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [835904340] [2022-01-31 19:21:10,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:21:10,138 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:21:10,138 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:21:10,139 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:21:10,145 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:21:10,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:21:12,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:21:12,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:21:12,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-01-31 19:21:12,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:21:12,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-01-31 19:21:12,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:21:12,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-01-31 19:21:12,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:21:12,382 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:21:12,382 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:21:12,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [835904340] [2022-01-31 19:21:12,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [835904340] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:21:12,382 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:21:12,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [108] imperfect sequences [] total 108 [2022-01-31 19:21:12,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627148161] [2022-01-31 19:21:12,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:21:12,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 108 states [2022-01-31 19:21:12,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:21:12,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2022-01-31 19:21:12,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5673, Invalid=5883, Unknown=0, NotChecked=0, Total=11556 [2022-01-31 19:21:12,385 INFO L87 Difference]: Start difference. First operand 239 states and 243 transitions. Second operand has 108 states, 108 states have (on average 2.1018518518518516) internal successors, (227), 107 states have internal predecessors, (227), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:21:15,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:21:15,044 INFO L93 Difference]: Finished difference Result 266 states and 274 transitions. [2022-01-31 19:21:15,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2022-01-31 19:21:15,044 INFO L78 Accepts]: Start accepts. Automaton has has 108 states, 108 states have (on average 2.1018518518518516) internal successors, (227), 107 states have internal predecessors, (227), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 256 [2022-01-31 19:21:15,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:21:15,045 INFO L225 Difference]: With dead ends: 266 [2022-01-31 19:21:15,045 INFO L226 Difference]: Without dead ends: 242 [2022-01-31 19:21:15,047 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 211 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5564 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=17013, Invalid=28143, Unknown=0, NotChecked=0, Total=45156 [2022-01-31 19:21:15,047 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 229 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:21:15,048 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [232 Valid, 42 Invalid, 399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:21:15,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2022-01-31 19:21:15,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 241. [2022-01-31 19:21:15,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 233 states have (on average 1.0128755364806867) internal successors, (236), 233 states have internal predecessors, (236), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:21:15,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 245 transitions. [2022-01-31 19:21:15,116 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 245 transitions. Word has length 256 [2022-01-31 19:21:15,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:21:15,116 INFO L470 AbstractCegarLoop]: Abstraction has 241 states and 245 transitions. [2022-01-31 19:21:15,117 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 108 states, 108 states have (on average 2.1018518518518516) internal successors, (227), 107 states have internal predecessors, (227), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:21:15,117 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 245 transitions. [2022-01-31 19:21:15,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2022-01-31 19:21:15,117 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:21:15,118 INFO L514 BasicCegarLoop]: trace histogram [105, 105, 6, 6, 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] [2022-01-31 19:21:15,118 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2022-01-31 19:21:15,118 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:21:15,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:21:15,119 INFO L85 PathProgramCache]: Analyzing trace with hash 171299866, now seen corresponding path program 105 times [2022-01-31 19:21:15,119 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:21:15,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [403156112] [2022-01-31 19:21:15,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:21:15,120 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:21:15,120 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:21:15,120 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:21:15,126 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:21:15,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:21:17,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:21:17,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:21:17,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2022-01-31 19:21:17,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:21:17,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-01-31 19:21:17,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:21:17,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-01-31 19:21:17,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:21:17,263 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:21:17,263 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:21:17,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [403156112] [2022-01-31 19:21:17,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [403156112] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:21:17,264 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:21:17,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [109] imperfect sequences [] total 109 [2022-01-31 19:21:17,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115593526] [2022-01-31 19:21:17,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:21:17,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 109 states [2022-01-31 19:21:17,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:21:17,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2022-01-31 19:21:17,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5780, Invalid=5992, Unknown=0, NotChecked=0, Total=11772 [2022-01-31 19:21:17,267 INFO L87 Difference]: Start difference. First operand 241 states and 245 transitions. Second operand has 109 states, 109 states have (on average 2.1009174311926606) internal successors, (229), 108 states have internal predecessors, (229), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:21:20,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:21:20,043 INFO L93 Difference]: Finished difference Result 268 states and 276 transitions. [2022-01-31 19:21:20,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2022-01-31 19:21:20,043 INFO L78 Accepts]: Start accepts. Automaton has has 109 states, 109 states have (on average 2.1009174311926606) internal successors, (229), 108 states have internal predecessors, (229), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 258 [2022-01-31 19:21:20,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:21:20,044 INFO L225 Difference]: With dead ends: 268 [2022-01-31 19:21:20,044 INFO L226 Difference]: Without dead ends: 244 [2022-01-31 19:21:20,047 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5670 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=17334, Invalid=28676, Unknown=0, NotChecked=0, Total=46010 [2022-01-31 19:21:20,047 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 231 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:21:20,047 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [234 Valid, 57 Invalid, 465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 350 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:21:20,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2022-01-31 19:21:20,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 243. [2022-01-31 19:21:20,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 235 states have (on average 1.0127659574468084) internal successors, (238), 235 states have internal predecessors, (238), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:21:20,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 247 transitions. [2022-01-31 19:21:20,117 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 247 transitions. Word has length 258 [2022-01-31 19:21:20,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:21:20,117 INFO L470 AbstractCegarLoop]: Abstraction has 243 states and 247 transitions. [2022-01-31 19:21:20,117 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 109 states, 109 states have (on average 2.1009174311926606) internal successors, (229), 108 states have internal predecessors, (229), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:21:20,117 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 247 transitions. [2022-01-31 19:21:20,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2022-01-31 19:21:20,118 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:21:20,118 INFO L514 BasicCegarLoop]: trace histogram [106, 106, 6, 6, 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] [2022-01-31 19:21:20,118 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2022-01-31 19:21:20,118 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:21:20,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:21:20,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1968785156, now seen corresponding path program 106 times [2022-01-31 19:21:20,119 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:21:20,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [81041505] [2022-01-31 19:21:20,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:21:20,120 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:21:20,120 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:21:20,120 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:21:20,127 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:21:20,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:21:22,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:21:22,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:21:22,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-01-31 19:21:22,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:21:22,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-01-31 19:21:22,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:21:22,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-01-31 19:21:22,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:21:22,344 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:21:22,345 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:21:22,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [81041505] [2022-01-31 19:21:22,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [81041505] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:21:22,345 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:21:22,345 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [110] imperfect sequences [] total 110 [2022-01-31 19:21:22,345 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430415415] [2022-01-31 19:21:22,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:21:22,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 110 states [2022-01-31 19:21:22,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:21:22,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2022-01-31 19:21:22,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5888, Invalid=6102, Unknown=0, NotChecked=0, Total=11990 [2022-01-31 19:21:22,348 INFO L87 Difference]: Start difference. First operand 243 states and 247 transitions. Second operand has 110 states, 110 states have (on average 2.1) internal successors, (231), 109 states have internal predecessors, (231), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:21:25,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:21:25,386 INFO L93 Difference]: Finished difference Result 270 states and 278 transitions. [2022-01-31 19:21:25,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2022-01-31 19:21:25,386 INFO L78 Accepts]: Start accepts. Automaton has has 110 states, 110 states have (on average 2.1) internal successors, (231), 109 states have internal predecessors, (231), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 260 [2022-01-31 19:21:25,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:21:25,387 INFO L225 Difference]: With dead ends: 270 [2022-01-31 19:21:25,387 INFO L226 Difference]: Without dead ends: 246 [2022-01-31 19:21:25,389 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 215 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5777 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=17658, Invalid=29214, Unknown=0, NotChecked=0, Total=46872 [2022-01-31 19:21:25,389 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 233 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:21:25,390 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [236 Valid, 52 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:21:25,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2022-01-31 19:21:25,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 245. [2022-01-31 19:21:25,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 237 states have (on average 1.0126582278481013) internal successors, (240), 237 states have internal predecessors, (240), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:21:25,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 249 transitions. [2022-01-31 19:21:25,461 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 249 transitions. Word has length 260 [2022-01-31 19:21:25,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:21:25,461 INFO L470 AbstractCegarLoop]: Abstraction has 245 states and 249 transitions. [2022-01-31 19:21:25,461 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 110 states, 110 states have (on average 2.1) internal successors, (231), 109 states have internal predecessors, (231), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:21:25,461 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 249 transitions. [2022-01-31 19:21:25,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2022-01-31 19:21:25,462 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:21:25,462 INFO L514 BasicCegarLoop]: trace histogram [107, 107, 6, 6, 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] [2022-01-31 19:21:25,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2022-01-31 19:21:25,462 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:21:25,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:21:25,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1301156514, now seen corresponding path program 107 times [2022-01-31 19:21:25,463 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:21:25,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [748010013] [2022-01-31 19:21:25,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:21:25,464 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:21:25,464 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:21:25,464 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:21:25,471 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:21:25,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:21:28,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:21:28,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:21:28,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-01-31 19:21:28,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:21:28,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-01-31 19:21:28,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:21:28,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-01-31 19:21:28,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:21:28,148 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:21:28,148 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:21:28,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [748010013] [2022-01-31 19:21:28,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [748010013] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:21:28,149 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:21:28,149 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [111] imperfect sequences [] total 111 [2022-01-31 19:21:28,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983042746] [2022-01-31 19:21:28,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:21:28,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 111 states [2022-01-31 19:21:28,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:21:28,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2022-01-31 19:21:28,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5997, Invalid=6213, Unknown=0, NotChecked=0, Total=12210 [2022-01-31 19:21:28,152 INFO L87 Difference]: Start difference. First operand 245 states and 249 transitions. Second operand has 111 states, 111 states have (on average 2.099099099099099) internal successors, (233), 110 states have internal predecessors, (233), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:21:31,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:21:31,195 INFO L93 Difference]: Finished difference Result 272 states and 280 transitions. [2022-01-31 19:21:31,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2022-01-31 19:21:31,196 INFO L78 Accepts]: Start accepts. Automaton has has 111 states, 111 states have (on average 2.099099099099099) internal successors, (233), 110 states have internal predecessors, (233), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 262 [2022-01-31 19:21:31,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:21:31,196 INFO L225 Difference]: With dead ends: 272 [2022-01-31 19:21:31,196 INFO L226 Difference]: Without dead ends: 248 [2022-01-31 19:21:31,199 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 217 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5885 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=17985, Invalid=29757, Unknown=0, NotChecked=0, Total=47742 [2022-01-31 19:21:31,200 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 235 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:21:31,200 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [238 Valid, 52 Invalid, 449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 332 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:21:31,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2022-01-31 19:21:31,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 247. [2022-01-31 19:21:31,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 239 states have (on average 1.0125523012552302) internal successors, (242), 239 states have internal predecessors, (242), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:21:31,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 251 transitions. [2022-01-31 19:21:31,273 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 251 transitions. Word has length 262 [2022-01-31 19:21:31,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:21:31,273 INFO L470 AbstractCegarLoop]: Abstraction has 247 states and 251 transitions. [2022-01-31 19:21:31,273 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 111 states, 111 states have (on average 2.099099099099099) internal successors, (233), 110 states have internal predecessors, (233), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:21:31,273 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 251 transitions. [2022-01-31 19:21:31,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2022-01-31 19:21:31,274 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:21:31,274 INFO L514 BasicCegarLoop]: trace histogram [108, 108, 6, 6, 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] [2022-01-31 19:21:31,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2022-01-31 19:21:31,274 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:21:31,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:21:31,274 INFO L85 PathProgramCache]: Analyzing trace with hash 339841344, now seen corresponding path program 108 times [2022-01-31 19:21:31,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:21:31,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1693846300] [2022-01-31 19:21:31,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:21:31,275 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:21:31,275 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:21:31,276 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:21:31,292 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:21:31,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:21:34,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:21:34,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:21:34,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-01-31 19:21:34,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:21:34,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-01-31 19:21:34,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:21:34,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-01-31 19:21:34,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:21:34,182 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:21:34,182 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:21:34,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1693846300] [2022-01-31 19:21:34,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1693846300] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:21:34,182 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:21:34,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [112] imperfect sequences [] total 112 [2022-01-31 19:21:34,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705518691] [2022-01-31 19:21:34,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:21:34,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 112 states [2022-01-31 19:21:34,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:21:34,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2022-01-31 19:21:34,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6107, Invalid=6325, Unknown=0, NotChecked=0, Total=12432 [2022-01-31 19:21:34,184 INFO L87 Difference]: Start difference. First operand 247 states and 251 transitions. Second operand has 112 states, 112 states have (on average 2.0982142857142856) internal successors, (235), 111 states have internal predecessors, (235), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:21:37,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:21:37,151 INFO L93 Difference]: Finished difference Result 274 states and 282 transitions. [2022-01-31 19:21:37,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2022-01-31 19:21:37,152 INFO L78 Accepts]: Start accepts. Automaton has has 112 states, 112 states have (on average 2.0982142857142856) internal successors, (235), 111 states have internal predecessors, (235), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 264 [2022-01-31 19:21:37,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:21:37,152 INFO L225 Difference]: With dead ends: 274 [2022-01-31 19:21:37,152 INFO L226 Difference]: Without dead ends: 250 [2022-01-31 19:21:37,155 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 219 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5994 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=18315, Invalid=30305, Unknown=0, NotChecked=0, Total=48620 [2022-01-31 19:21:37,155 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 237 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:21:37,156 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [240 Valid, 32 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:21:37,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2022-01-31 19:21:37,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 249. [2022-01-31 19:21:37,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 241 states have (on average 1.012448132780083) internal successors, (244), 241 states have internal predecessors, (244), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:21:37,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 253 transitions. [2022-01-31 19:21:37,273 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 253 transitions. Word has length 264 [2022-01-31 19:21:37,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:21:37,273 INFO L470 AbstractCegarLoop]: Abstraction has 249 states and 253 transitions. [2022-01-31 19:21:37,273 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 112 states, 112 states have (on average 2.0982142857142856) internal successors, (235), 111 states have internal predecessors, (235), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:21:37,273 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 253 transitions. [2022-01-31 19:21:37,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2022-01-31 19:21:37,274 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:21:37,274 INFO L514 BasicCegarLoop]: trace histogram [109, 109, 6, 6, 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] [2022-01-31 19:21:37,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2022-01-31 19:21:37,274 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:21:37,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:21:37,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1085785250, now seen corresponding path program 109 times [2022-01-31 19:21:37,275 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:21:37,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [136823597] [2022-01-31 19:21:37,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:21:37,276 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:21:37,276 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:21:37,276 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:21:37,284 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:21:37,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:21:40,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:21:40,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:21:40,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2022-01-31 19:21:40,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:21:40,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-01-31 19:21:40,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:21:40,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-01-31 19:21:40,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:21:40,722 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:21:40,722 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:21:40,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [136823597] [2022-01-31 19:21:40,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [136823597] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:21:40,722 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:21:40,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [113] imperfect sequences [] total 113 [2022-01-31 19:21:40,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977240215] [2022-01-31 19:21:40,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:21:40,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 113 states [2022-01-31 19:21:40,723 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:21:40,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2022-01-31 19:21:40,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6218, Invalid=6438, Unknown=0, NotChecked=0, Total=12656 [2022-01-31 19:21:40,724 INFO L87 Difference]: Start difference. First operand 249 states and 253 transitions. Second operand has 113 states, 113 states have (on average 2.0973451327433628) internal successors, (237), 112 states have internal predecessors, (237), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:21:43,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:21:43,768 INFO L93 Difference]: Finished difference Result 276 states and 284 transitions. [2022-01-31 19:21:43,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2022-01-31 19:21:43,769 INFO L78 Accepts]: Start accepts. Automaton has has 113 states, 113 states have (on average 2.0973451327433628) internal successors, (237), 112 states have internal predecessors, (237), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 266 [2022-01-31 19:21:43,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:21:43,769 INFO L225 Difference]: With dead ends: 276 [2022-01-31 19:21:43,769 INFO L226 Difference]: Without dead ends: 252 [2022-01-31 19:21:43,771 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 221 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6104 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=18648, Invalid=30858, Unknown=0, NotChecked=0, Total=49506 [2022-01-31 19:21:43,772 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 239 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:21:43,772 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [242 Valid, 57 Invalid, 478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:21:43,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2022-01-31 19:21:43,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 251. [2022-01-31 19:21:43,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 243 states have (on average 1.0123456790123457) internal successors, (246), 243 states have internal predecessors, (246), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:21:43,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 255 transitions. [2022-01-31 19:21:43,847 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 255 transitions. Word has length 266 [2022-01-31 19:21:43,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:21:43,847 INFO L470 AbstractCegarLoop]: Abstraction has 251 states and 255 transitions. [2022-01-31 19:21:43,847 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 113 states, 113 states have (on average 2.0973451327433628) internal successors, (237), 112 states have internal predecessors, (237), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:21:43,847 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 255 transitions. [2022-01-31 19:21:43,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2022-01-31 19:21:43,848 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:21:43,848 INFO L514 BasicCegarLoop]: trace histogram [110, 110, 6, 6, 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] [2022-01-31 19:21:43,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2022-01-31 19:21:43,848 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:21:43,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:21:43,848 INFO L85 PathProgramCache]: Analyzing trace with hash 678340484, now seen corresponding path program 110 times [2022-01-31 19:21:43,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:21:43,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [267137988] [2022-01-31 19:21:43,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:21:43,849 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:21:43,849 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:21:43,850 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:21:43,856 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:21:43,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:21:46,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:21:46,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:21:46,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-01-31 19:21:46,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:21:46,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-01-31 19:21:46,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:21:46,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-01-31 19:21:46,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:21:46,174 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:21:46,174 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:21:46,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [267137988] [2022-01-31 19:21:46,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [267137988] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:21:46,175 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:21:46,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [114] imperfect sequences [] total 114 [2022-01-31 19:21:46,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508694858] [2022-01-31 19:21:46,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:21:46,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 114 states [2022-01-31 19:21:46,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:21:46,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2022-01-31 19:21:46,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6330, Invalid=6552, Unknown=0, NotChecked=0, Total=12882 [2022-01-31 19:21:46,177 INFO L87 Difference]: Start difference. First operand 251 states and 255 transitions. Second operand has 114 states, 114 states have (on average 2.0964912280701755) internal successors, (239), 113 states have internal predecessors, (239), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:21:49,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:21:49,158 INFO L93 Difference]: Finished difference Result 278 states and 286 transitions. [2022-01-31 19:21:49,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2022-01-31 19:21:49,159 INFO L78 Accepts]: Start accepts. Automaton has has 114 states, 114 states have (on average 2.0964912280701755) internal successors, (239), 113 states have internal predecessors, (239), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 268 [2022-01-31 19:21:49,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:21:49,159 INFO L225 Difference]: With dead ends: 278 [2022-01-31 19:21:49,159 INFO L226 Difference]: Without dead ends: 254 [2022-01-31 19:21:49,162 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 223 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6215 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=18984, Invalid=31416, Unknown=0, NotChecked=0, Total=50400 [2022-01-31 19:21:49,162 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 241 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 426 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:21:49,162 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [244 Valid, 72 Invalid, 544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 426 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:21:49,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2022-01-31 19:21:49,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 253. [2022-01-31 19:21:49,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 245 states have (on average 1.0122448979591836) internal successors, (248), 245 states have internal predecessors, (248), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:21:49,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 257 transitions. [2022-01-31 19:21:49,238 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 257 transitions. Word has length 268 [2022-01-31 19:21:49,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:21:49,238 INFO L470 AbstractCegarLoop]: Abstraction has 253 states and 257 transitions. [2022-01-31 19:21:49,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 114 states, 114 states have (on average 2.0964912280701755) internal successors, (239), 113 states have internal predecessors, (239), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:21:49,238 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 257 transitions. [2022-01-31 19:21:49,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2022-01-31 19:21:49,239 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:21:49,239 INFO L514 BasicCegarLoop]: trace histogram [111, 111, 6, 6, 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] [2022-01-31 19:21:49,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2022-01-31 19:21:49,239 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:21:49,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:21:49,240 INFO L85 PathProgramCache]: Analyzing trace with hash -34055706, now seen corresponding path program 111 times [2022-01-31 19:21:49,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:21:49,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2087028726] [2022-01-31 19:21:49,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:21:49,241 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:21:49,241 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:21:49,241 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:21:49,248 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:21:49,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:21:51,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:21:51,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:21:51,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-01-31 19:21:51,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:21:51,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-01-31 19:21:51,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:21:51,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2022-01-31 19:21:51,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:21:51,662 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:21:51,662 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:21:51,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2087028726] [2022-01-31 19:21:51,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2087028726] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:21:51,662 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:21:51,663 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [115] imperfect sequences [] total 115 [2022-01-31 19:21:51,663 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124379755] [2022-01-31 19:21:51,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:21:51,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 115 states [2022-01-31 19:21:51,663 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:21:51,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2022-01-31 19:21:51,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6443, Invalid=6667, Unknown=0, NotChecked=0, Total=13110 [2022-01-31 19:21:51,666 INFO L87 Difference]: Start difference. First operand 253 states and 257 transitions. Second operand has 115 states, 115 states have (on average 2.0956521739130434) internal successors, (241), 114 states have internal predecessors, (241), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:21:55,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:21:55,346 INFO L93 Difference]: Finished difference Result 280 states and 288 transitions. [2022-01-31 19:21:55,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2022-01-31 19:21:55,359 INFO L78 Accepts]: Start accepts. Automaton has has 115 states, 115 states have (on average 2.0956521739130434) internal successors, (241), 114 states have internal predecessors, (241), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 270 [2022-01-31 19:21:55,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:21:55,372 INFO L225 Difference]: With dead ends: 280 [2022-01-31 19:21:55,372 INFO L226 Difference]: Without dead ends: 256 [2022-01-31 19:21:55,375 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 225 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6327 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=19323, Invalid=31979, Unknown=0, NotChecked=0, Total=51302 [2022-01-31 19:21:55,375 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 243 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 362 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:21:55,376 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [246 Valid, 57 Invalid, 487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 362 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:21:55,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2022-01-31 19:21:55,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 255. [2022-01-31 19:21:55,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 247 states have (on average 1.0121457489878543) internal successors, (250), 247 states have internal predecessors, (250), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:21:55,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 259 transitions. [2022-01-31 19:21:55,485 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 259 transitions. Word has length 270 [2022-01-31 19:21:55,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:21:55,485 INFO L470 AbstractCegarLoop]: Abstraction has 255 states and 259 transitions. [2022-01-31 19:21:55,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 115 states, 115 states have (on average 2.0956521739130434) internal successors, (241), 114 states have internal predecessors, (241), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:21:55,485 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 259 transitions. [2022-01-31 19:21:55,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2022-01-31 19:21:55,486 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:21:55,486 INFO L514 BasicCegarLoop]: trace histogram [112, 112, 6, 6, 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] [2022-01-31 19:21:55,486 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2022-01-31 19:21:55,486 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:21:55,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:21:55,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1746994232, now seen corresponding path program 112 times [2022-01-31 19:21:55,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:21:55,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1886355288] [2022-01-31 19:21:55,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:21:55,488 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:21:55,488 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:21:55,488 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:21:55,495 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:21:55,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:21:58,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:21:58,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:21:58,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-01-31 19:21:58,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:21:58,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-01-31 19:21:58,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:21:58,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-01-31 19:21:58,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:21:58,627 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:21:58,627 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:21:58,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1886355288] [2022-01-31 19:21:58,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1886355288] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:21:58,627 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:21:58,627 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [116] imperfect sequences [] total 116 [2022-01-31 19:21:58,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336790010] [2022-01-31 19:21:58,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:21:58,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 116 states [2022-01-31 19:21:58,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:21:58,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2022-01-31 19:21:58,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6557, Invalid=6783, Unknown=0, NotChecked=0, Total=13340 [2022-01-31 19:21:58,630 INFO L87 Difference]: Start difference. First operand 255 states and 259 transitions. Second operand has 116 states, 116 states have (on average 2.0948275862068964) internal successors, (243), 115 states have internal predecessors, (243), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:01,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:22:01,681 INFO L93 Difference]: Finished difference Result 282 states and 290 transitions. [2022-01-31 19:22:01,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2022-01-31 19:22:01,681 INFO L78 Accepts]: Start accepts. Automaton has has 116 states, 116 states have (on average 2.0948275862068964) internal successors, (243), 115 states have internal predecessors, (243), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 272 [2022-01-31 19:22:01,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:22:01,682 INFO L225 Difference]: With dead ends: 282 [2022-01-31 19:22:01,682 INFO L226 Difference]: Without dead ends: 258 [2022-01-31 19:22:01,685 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 227 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6440 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=19665, Invalid=32547, Unknown=0, NotChecked=0, Total=52212 [2022-01-31 19:22:01,685 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 245 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:22:01,685 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [248 Valid, 37 Invalid, 401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:22:01,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2022-01-31 19:22:01,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 257. [2022-01-31 19:22:01,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 249 states have (on average 1.0120481927710843) internal successors, (252), 249 states have internal predecessors, (252), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:22:01,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 261 transitions. [2022-01-31 19:22:01,776 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 261 transitions. Word has length 272 [2022-01-31 19:22:01,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:22:01,776 INFO L470 AbstractCegarLoop]: Abstraction has 257 states and 261 transitions. [2022-01-31 19:22:01,777 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 116 states, 116 states have (on average 2.0948275862068964) internal successors, (243), 115 states have internal predecessors, (243), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:01,777 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 261 transitions. [2022-01-31 19:22:01,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2022-01-31 19:22:01,777 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:22:01,777 INFO L514 BasicCegarLoop]: trace histogram [113, 113, 6, 6, 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] [2022-01-31 19:22:01,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2022-01-31 19:22:01,778 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:22:01,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:22:01,778 INFO L85 PathProgramCache]: Analyzing trace with hash 1386523946, now seen corresponding path program 113 times [2022-01-31 19:22:01,778 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:22:01,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1717929214] [2022-01-31 19:22:01,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:22:01,779 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:22:01,779 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:22:01,779 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:22:01,787 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:22:01,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:04,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:22:04,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:04,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2022-01-31 19:22:04,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:04,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-01-31 19:22:04,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:04,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-01-31 19:22:04,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:04,301 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:22:04,301 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:22:04,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1717929214] [2022-01-31 19:22:04,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1717929214] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:22:04,301 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:22:04,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [117] imperfect sequences [] total 117 [2022-01-31 19:22:04,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676438523] [2022-01-31 19:22:04,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:22:04,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 117 states [2022-01-31 19:22:04,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:22:04,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2022-01-31 19:22:04,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6672, Invalid=6900, Unknown=0, NotChecked=0, Total=13572 [2022-01-31 19:22:04,304 INFO L87 Difference]: Start difference. First operand 257 states and 261 transitions. Second operand has 117 states, 117 states have (on average 2.094017094017094) internal successors, (245), 116 states have internal predecessors, (245), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:07,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:22:07,453 INFO L93 Difference]: Finished difference Result 284 states and 292 transitions. [2022-01-31 19:22:07,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2022-01-31 19:22:07,453 INFO L78 Accepts]: Start accepts. Automaton has has 117 states, 117 states have (on average 2.094017094017094) internal successors, (245), 116 states have internal predecessors, (245), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 274 [2022-01-31 19:22:07,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:22:07,454 INFO L225 Difference]: With dead ends: 284 [2022-01-31 19:22:07,454 INFO L226 Difference]: Without dead ends: 260 [2022-01-31 19:22:07,457 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 229 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6554 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=20010, Invalid=33120, Unknown=0, NotChecked=0, Total=53130 [2022-01-31 19:22:07,457 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 247 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:22:07,457 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [250 Valid, 47 Invalid, 447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:22:07,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2022-01-31 19:22:07,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 259. [2022-01-31 19:22:07,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 251 states have (on average 1.0119521912350598) internal successors, (254), 251 states have internal predecessors, (254), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:22:07,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 263 transitions. [2022-01-31 19:22:07,537 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 263 transitions. Word has length 274 [2022-01-31 19:22:07,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:22:07,537 INFO L470 AbstractCegarLoop]: Abstraction has 259 states and 263 transitions. [2022-01-31 19:22:07,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 117 states, 117 states have (on average 2.094017094017094) internal successors, (245), 116 states have internal predecessors, (245), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:07,538 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 263 transitions. [2022-01-31 19:22:07,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2022-01-31 19:22:07,538 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:22:07,538 INFO L514 BasicCegarLoop]: trace histogram [114, 114, 6, 6, 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] [2022-01-31 19:22:07,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2022-01-31 19:22:07,539 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:22:07,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:22:07,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1925418508, now seen corresponding path program 114 times [2022-01-31 19:22:07,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:22:07,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1128752519] [2022-01-31 19:22:07,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:22:07,540 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:22:07,540 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:22:07,540 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:22:07,548 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:22:07,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:10,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:22:10,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:10,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-01-31 19:22:10,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:10,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-01-31 19:22:10,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:10,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-01-31 19:22:10,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:10,409 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:22:10,409 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:22:10,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1128752519] [2022-01-31 19:22:10,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1128752519] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:22:10,410 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:22:10,410 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [118] imperfect sequences [] total 118 [2022-01-31 19:22:10,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244453383] [2022-01-31 19:22:10,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:22:10,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 118 states [2022-01-31 19:22:10,410 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:22:10,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2022-01-31 19:22:10,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6788, Invalid=7018, Unknown=0, NotChecked=0, Total=13806 [2022-01-31 19:22:10,412 INFO L87 Difference]: Start difference. First operand 259 states and 263 transitions. Second operand has 118 states, 118 states have (on average 2.093220338983051) internal successors, (247), 117 states have internal predecessors, (247), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:13,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:22:13,605 INFO L93 Difference]: Finished difference Result 286 states and 294 transitions. [2022-01-31 19:22:13,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2022-01-31 19:22:13,605 INFO L78 Accepts]: Start accepts. Automaton has has 118 states, 118 states have (on average 2.093220338983051) internal successors, (247), 117 states have internal predecessors, (247), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 276 [2022-01-31 19:22:13,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:22:13,606 INFO L225 Difference]: With dead ends: 286 [2022-01-31 19:22:13,606 INFO L226 Difference]: Without dead ends: 262 [2022-01-31 19:22:13,609 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 231 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6669 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=20358, Invalid=33698, Unknown=0, NotChecked=0, Total=54056 [2022-01-31 19:22:13,611 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 249 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:22:13,613 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [252 Valid, 62 Invalid, 511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:22:13,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2022-01-31 19:22:13,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 261. [2022-01-31 19:22:13,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 253 states have (on average 1.0118577075098814) internal successors, (256), 253 states have internal predecessors, (256), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:22:13,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 265 transitions. [2022-01-31 19:22:13,708 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 265 transitions. Word has length 276 [2022-01-31 19:22:13,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:22:13,708 INFO L470 AbstractCegarLoop]: Abstraction has 261 states and 265 transitions. [2022-01-31 19:22:13,708 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 118 states, 118 states have (on average 2.093220338983051) internal successors, (247), 117 states have internal predecessors, (247), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:13,708 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 265 transitions. [2022-01-31 19:22:13,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2022-01-31 19:22:13,709 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:22:13,709 INFO L514 BasicCegarLoop]: trace histogram [115, 115, 6, 6, 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] [2022-01-31 19:22:13,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2022-01-31 19:22:13,709 INFO L402 AbstractCegarLoop]: === Iteration 120 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:22:13,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:22:13,709 INFO L85 PathProgramCache]: Analyzing trace with hash 112049774, now seen corresponding path program 115 times [2022-01-31 19:22:13,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:22:13,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [253290441] [2022-01-31 19:22:13,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:22:13,711 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:22:13,711 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:22:13,711 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:22:13,718 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:22:13,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:16,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:22:16,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:16,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-01-31 19:22:16,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:16,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-01-31 19:22:16,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:16,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2022-01-31 19:22:16,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:16,525 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:22:16,525 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:22:16,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [253290441] [2022-01-31 19:22:16,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [253290441] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:22:16,525 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:22:16,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [119] imperfect sequences [] total 119 [2022-01-31 19:22:16,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940190660] [2022-01-31 19:22:16,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:22:16,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 119 states [2022-01-31 19:22:16,526 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:22:16,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2022-01-31 19:22:16,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6905, Invalid=7137, Unknown=0, NotChecked=0, Total=14042 [2022-01-31 19:22:16,528 INFO L87 Difference]: Start difference. First operand 261 states and 265 transitions. Second operand has 119 states, 119 states have (on average 2.092436974789916) internal successors, (249), 118 states have internal predecessors, (249), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:20,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:22:20,150 INFO L93 Difference]: Finished difference Result 288 states and 296 transitions. [2022-01-31 19:22:20,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2022-01-31 19:22:20,150 INFO L78 Accepts]: Start accepts. Automaton has has 119 states, 119 states have (on average 2.092436974789916) internal successors, (249), 118 states have internal predecessors, (249), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 278 [2022-01-31 19:22:20,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:22:20,151 INFO L225 Difference]: With dead ends: 288 [2022-01-31 19:22:20,151 INFO L226 Difference]: Without dead ends: 264 [2022-01-31 19:22:20,154 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 233 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6785 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=20709, Invalid=34281, Unknown=0, NotChecked=0, Total=54990 [2022-01-31 19:22:20,155 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 251 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:22:20,155 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [254 Valid, 62 Invalid, 519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:22:20,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2022-01-31 19:22:20,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 263. [2022-01-31 19:22:20,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 255 states have (on average 1.011764705882353) internal successors, (258), 255 states have internal predecessors, (258), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:22:20,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 267 transitions. [2022-01-31 19:22:20,239 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 267 transitions. Word has length 278 [2022-01-31 19:22:20,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:22:20,240 INFO L470 AbstractCegarLoop]: Abstraction has 263 states and 267 transitions. [2022-01-31 19:22:20,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 119 states, 119 states have (on average 2.092436974789916) internal successors, (249), 118 states have internal predecessors, (249), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:20,240 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 267 transitions. [2022-01-31 19:22:20,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2022-01-31 19:22:20,241 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:22:20,241 INFO L514 BasicCegarLoop]: trace histogram [116, 116, 6, 6, 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] [2022-01-31 19:22:20,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2022-01-31 19:22:20,241 INFO L402 AbstractCegarLoop]: === Iteration 121 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:22:20,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:22:20,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1221418576, now seen corresponding path program 116 times [2022-01-31 19:22:20,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:22:20,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [983679817] [2022-01-31 19:22:20,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:22:20,247 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:22:20,248 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:22:20,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:22:20,255 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:22:20,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:23,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:22:23,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:23,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-01-31 19:22:23,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:23,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-01-31 19:22:23,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:23,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-01-31 19:22:23,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:23,917 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:22:23,918 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:22:23,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [983679817] [2022-01-31 19:22:23,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [983679817] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:22:23,918 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:22:23,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [120] imperfect sequences [] total 120 [2022-01-31 19:22:23,918 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024323539] [2022-01-31 19:22:23,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:22:23,918 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 120 states [2022-01-31 19:22:23,918 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:22:23,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2022-01-31 19:22:23,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7023, Invalid=7257, Unknown=0, NotChecked=0, Total=14280 [2022-01-31 19:22:23,920 INFO L87 Difference]: Start difference. First operand 263 states and 267 transitions. Second operand has 120 states, 120 states have (on average 2.091666666666667) internal successors, (251), 119 states have internal predecessors, (251), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:27,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:22:27,674 INFO L93 Difference]: Finished difference Result 290 states and 298 transitions. [2022-01-31 19:22:27,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2022-01-31 19:22:27,674 INFO L78 Accepts]: Start accepts. Automaton has has 120 states, 120 states have (on average 2.091666666666667) internal successors, (251), 119 states have internal predecessors, (251), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 280 [2022-01-31 19:22:27,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:22:27,675 INFO L225 Difference]: With dead ends: 290 [2022-01-31 19:22:27,675 INFO L226 Difference]: Without dead ends: 266 [2022-01-31 19:22:27,677 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 235 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6902 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=21063, Invalid=34869, Unknown=0, NotChecked=0, Total=55932 [2022-01-31 19:22:27,678 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 253 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:22:27,678 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [256 Valid, 42 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:22:27,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2022-01-31 19:22:27,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 265. [2022-01-31 19:22:27,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 257 states have (on average 1.0116731517509727) internal successors, (260), 257 states have internal predecessors, (260), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:22:27,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 269 transitions. [2022-01-31 19:22:27,762 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 269 transitions. Word has length 280 [2022-01-31 19:22:27,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:22:27,762 INFO L470 AbstractCegarLoop]: Abstraction has 265 states and 269 transitions. [2022-01-31 19:22:27,762 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 120 states, 120 states have (on average 2.091666666666667) internal successors, (251), 119 states have internal predecessors, (251), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:27,762 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 269 transitions. [2022-01-31 19:22:27,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2022-01-31 19:22:27,763 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:22:27,763 INFO L514 BasicCegarLoop]: trace histogram [117, 117, 6, 6, 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] [2022-01-31 19:22:27,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2022-01-31 19:22:27,763 INFO L402 AbstractCegarLoop]: === Iteration 122 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:22:27,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:22:27,763 INFO L85 PathProgramCache]: Analyzing trace with hash -2122019406, now seen corresponding path program 117 times [2022-01-31 19:22:27,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:22:27,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [981389191] [2022-01-31 19:22:27,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:22:27,765 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:22:27,765 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:22:27,765 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:22:27,773 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:22:27,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:30,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:22:30,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:30,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2022-01-31 19:22:30,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:30,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-01-31 19:22:30,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:30,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-01-31 19:22:30,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:30,900 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:22:30,900 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:22:30,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [981389191] [2022-01-31 19:22:30,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [981389191] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:22:30,901 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:22:30,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [121] imperfect sequences [] total 121 [2022-01-31 19:22:30,901 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143594264] [2022-01-31 19:22:30,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:22:30,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 121 states [2022-01-31 19:22:30,901 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:22:30,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 121 interpolants. [2022-01-31 19:22:30,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7142, Invalid=7378, Unknown=0, NotChecked=0, Total=14520 [2022-01-31 19:22:30,904 INFO L87 Difference]: Start difference. First operand 265 states and 269 transitions. Second operand has 121 states, 121 states have (on average 2.090909090909091) internal successors, (253), 120 states have internal predecessors, (253), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:34,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:22:34,743 INFO L93 Difference]: Finished difference Result 292 states and 300 transitions. [2022-01-31 19:22:34,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2022-01-31 19:22:34,744 INFO L78 Accepts]: Start accepts. Automaton has has 121 states, 121 states have (on average 2.090909090909091) internal successors, (253), 120 states have internal predecessors, (253), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 282 [2022-01-31 19:22:34,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:22:34,744 INFO L225 Difference]: With dead ends: 292 [2022-01-31 19:22:34,744 INFO L226 Difference]: Without dead ends: 268 [2022-01-31 19:22:34,748 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 237 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7020 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=21420, Invalid=35462, Unknown=0, NotChecked=0, Total=56882 [2022-01-31 19:22:34,748 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 255 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:22:34,748 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [258 Valid, 77 Invalid, 587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 462 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:22:34,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2022-01-31 19:22:34,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 267. [2022-01-31 19:22:34,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 259 states have (on average 1.0115830115830116) internal successors, (262), 259 states have internal predecessors, (262), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:22:34,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 271 transitions. [2022-01-31 19:22:34,844 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 271 transitions. Word has length 282 [2022-01-31 19:22:34,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:22:34,845 INFO L470 AbstractCegarLoop]: Abstraction has 267 states and 271 transitions. [2022-01-31 19:22:34,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 121 states, 121 states have (on average 2.090909090909091) internal successors, (253), 120 states have internal predecessors, (253), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:34,845 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 271 transitions. [2022-01-31 19:22:34,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2022-01-31 19:22:34,846 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:22:34,846 INFO L514 BasicCegarLoop]: trace histogram [118, 118, 6, 6, 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] [2022-01-31 19:22:34,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2022-01-31 19:22:34,846 INFO L402 AbstractCegarLoop]: === Iteration 123 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:22:34,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:22:34,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1764584596, now seen corresponding path program 118 times [2022-01-31 19:22:34,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:22:34,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [978007992] [2022-01-31 19:22:34,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:22:34,847 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:22:34,847 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:22:34,847 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:22:34,855 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:22:34,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:37,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:22:37,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:37,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-01-31 19:22:37,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:37,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-01-31 19:22:37,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:37,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-01-31 19:22:37,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:37,741 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:22:37,741 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:22:37,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [978007992] [2022-01-31 19:22:37,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [978007992] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:22:37,741 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:22:37,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [122] imperfect sequences [] total 122 [2022-01-31 19:22:37,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791662911] [2022-01-31 19:22:37,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:22:37,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 122 states [2022-01-31 19:22:37,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:22:37,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2022-01-31 19:22:37,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7262, Invalid=7500, Unknown=0, NotChecked=0, Total=14762 [2022-01-31 19:22:37,745 INFO L87 Difference]: Start difference. First operand 267 states and 271 transitions. Second operand has 122 states, 122 states have (on average 2.0901639344262297) internal successors, (255), 121 states have internal predecessors, (255), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:41,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:22:41,598 INFO L93 Difference]: Finished difference Result 294 states and 302 transitions. [2022-01-31 19:22:41,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2022-01-31 19:22:41,599 INFO L78 Accepts]: Start accepts. Automaton has has 122 states, 122 states have (on average 2.0901639344262297) internal successors, (255), 121 states have internal predecessors, (255), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 284 [2022-01-31 19:22:41,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:22:41,599 INFO L225 Difference]: With dead ends: 294 [2022-01-31 19:22:41,599 INFO L226 Difference]: Without dead ends: 270 [2022-01-31 19:22:41,603 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 239 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7139 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=21780, Invalid=36060, Unknown=0, NotChecked=0, Total=57840 [2022-01-31 19:22:41,603 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 257 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:22:41,603 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [260 Valid, 52 Invalid, 485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:22:41,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2022-01-31 19:22:41,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 269. [2022-01-31 19:22:41,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 261 states have (on average 1.0114942528735633) internal successors, (264), 261 states have internal predecessors, (264), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:22:41,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 273 transitions. [2022-01-31 19:22:41,701 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 273 transitions. Word has length 284 [2022-01-31 19:22:41,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:22:41,702 INFO L470 AbstractCegarLoop]: Abstraction has 269 states and 273 transitions. [2022-01-31 19:22:41,702 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 122 states, 122 states have (on average 2.0901639344262297) internal successors, (255), 121 states have internal predecessors, (255), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:41,702 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 273 transitions. [2022-01-31 19:22:41,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2022-01-31 19:22:41,703 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:22:41,703 INFO L514 BasicCegarLoop]: trace histogram [119, 119, 6, 6, 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] [2022-01-31 19:22:41,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2022-01-31 19:22:41,703 INFO L402 AbstractCegarLoop]: === Iteration 124 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:22:41,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:22:41,704 INFO L85 PathProgramCache]: Analyzing trace with hash 169482998, now seen corresponding path program 119 times [2022-01-31 19:22:41,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:22:41,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1887430919] [2022-01-31 19:22:41,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:22:41,705 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:22:41,705 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:22:41,705 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:22:41,713 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:22:41,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:44,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:22:44,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:44,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-01-31 19:22:44,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:44,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-01-31 19:22:44,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:44,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2022-01-31 19:22:44,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:44,621 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:22:44,621 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:22:44,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1887430919] [2022-01-31 19:22:44,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1887430919] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:22:44,621 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:22:44,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [123] imperfect sequences [] total 123 [2022-01-31 19:22:44,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578732807] [2022-01-31 19:22:44,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:22:44,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 123 states [2022-01-31 19:22:44,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:22:44,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants. [2022-01-31 19:22:44,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7383, Invalid=7623, Unknown=0, NotChecked=0, Total=15006 [2022-01-31 19:22:44,624 INFO L87 Difference]: Start difference. First operand 269 states and 273 transitions. Second operand has 123 states, 123 states have (on average 2.089430894308943) internal successors, (257), 122 states have internal predecessors, (257), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:49,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:22:49,630 INFO L93 Difference]: Finished difference Result 296 states and 304 transitions. [2022-01-31 19:22:49,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2022-01-31 19:22:49,630 INFO L78 Accepts]: Start accepts. Automaton has has 123 states, 123 states have (on average 2.089430894308943) internal successors, (257), 122 states have internal predecessors, (257), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 286 [2022-01-31 19:22:49,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:22:49,631 INFO L225 Difference]: With dead ends: 296 [2022-01-31 19:22:49,631 INFO L226 Difference]: Without dead ends: 272 [2022-01-31 19:22:49,634 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 241 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7259 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=22143, Invalid=36663, Unknown=0, NotChecked=0, Total=58806 [2022-01-31 19:22:49,634 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 259 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:22:49,634 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [262 Valid, 62 Invalid, 529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 400 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:22:49,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2022-01-31 19:22:49,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 271. [2022-01-31 19:22:49,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 263 states have (on average 1.0114068441064639) internal successors, (266), 263 states have internal predecessors, (266), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:22:49,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 275 transitions. [2022-01-31 19:22:49,722 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 275 transitions. Word has length 286 [2022-01-31 19:22:49,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:22:49,722 INFO L470 AbstractCegarLoop]: Abstraction has 271 states and 275 transitions. [2022-01-31 19:22:49,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 123 states, 123 states have (on average 2.089430894308943) internal successors, (257), 122 states have internal predecessors, (257), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:49,722 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 275 transitions. [2022-01-31 19:22:49,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2022-01-31 19:22:49,723 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:22:49,723 INFO L514 BasicCegarLoop]: trace histogram [120, 120, 6, 6, 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] [2022-01-31 19:22:49,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2022-01-31 19:22:49,724 INFO L402 AbstractCegarLoop]: === Iteration 125 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:22:49,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:22:49,724 INFO L85 PathProgramCache]: Analyzing trace with hash 580171992, now seen corresponding path program 120 times [2022-01-31 19:22:49,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:22:49,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [201865785] [2022-01-31 19:22:49,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:22:49,725 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:22:49,725 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:22:49,725 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:22:49,733 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:22:49,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:53,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:22:53,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:53,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-01-31 19:22:53,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:53,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-01-31 19:22:53,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:53,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-01-31 19:22:53,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:53,360 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:22:53,360 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:22:53,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [201865785] [2022-01-31 19:22:53,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [201865785] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:22:53,360 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:22:53,360 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [124] imperfect sequences [] total 124 [2022-01-31 19:22:53,360 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517696377] [2022-01-31 19:22:53,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:22:53,360 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 124 states [2022-01-31 19:22:53,361 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:22:53,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants. [2022-01-31 19:22:53,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7505, Invalid=7747, Unknown=0, NotChecked=0, Total=15252 [2022-01-31 19:22:53,362 INFO L87 Difference]: Start difference. First operand 271 states and 275 transitions. Second operand has 124 states, 124 states have (on average 2.088709677419355) internal successors, (259), 123 states have internal predecessors, (259), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:57,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:22:57,092 INFO L93 Difference]: Finished difference Result 298 states and 306 transitions. [2022-01-31 19:22:57,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2022-01-31 19:22:57,092 INFO L78 Accepts]: Start accepts. Automaton has has 124 states, 124 states have (on average 2.088709677419355) internal successors, (259), 123 states have internal predecessors, (259), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 288 [2022-01-31 19:22:57,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:22:57,093 INFO L225 Difference]: With dead ends: 298 [2022-01-31 19:22:57,093 INFO L226 Difference]: Without dead ends: 274 [2022-01-31 19:22:57,096 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 243 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7380 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=22509, Invalid=37271, Unknown=0, NotChecked=0, Total=59780 [2022-01-31 19:22:57,096 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 261 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:22:57,096 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [264 Valid, 82 Invalid, 618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 490 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:22:57,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2022-01-31 19:22:57,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 273. [2022-01-31 19:22:57,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 265 states have (on average 1.0113207547169811) internal successors, (268), 265 states have internal predecessors, (268), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:22:57,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 277 transitions. [2022-01-31 19:22:57,185 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 277 transitions. Word has length 288 [2022-01-31 19:22:57,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:22:57,185 INFO L470 AbstractCegarLoop]: Abstraction has 273 states and 277 transitions. [2022-01-31 19:22:57,186 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 124 states, 124 states have (on average 2.088709677419355) internal successors, (259), 123 states have internal predecessors, (259), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:57,186 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 277 transitions. [2022-01-31 19:22:57,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2022-01-31 19:22:57,187 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:22:57,187 INFO L514 BasicCegarLoop]: trace histogram [121, 121, 6, 6, 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] [2022-01-31 19:22:57,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2022-01-31 19:22:57,187 INFO L402 AbstractCegarLoop]: === Iteration 126 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:22:57,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:22:57,187 INFO L85 PathProgramCache]: Analyzing trace with hash 115303994, now seen corresponding path program 121 times [2022-01-31 19:22:57,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:22:57,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1428924824] [2022-01-31 19:22:57,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:22:57,188 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:22:57,188 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:22:57,188 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:22:57,196 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:22:57,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:00,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:23:00,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:00,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-01-31 19:23:00,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:00,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-01-31 19:23:00,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:00,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-01-31 19:23:00,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:00,114 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:23:00,114 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:23:00,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1428924824] [2022-01-31 19:23:00,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1428924824] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:23:00,114 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:23:00,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [125] imperfect sequences [] total 125 [2022-01-31 19:23:00,114 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076071001] [2022-01-31 19:23:00,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:23:00,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 125 states [2022-01-31 19:23:00,115 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:23:00,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 125 interpolants. [2022-01-31 19:23:00,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7628, Invalid=7872, Unknown=0, NotChecked=0, Total=15500 [2022-01-31 19:23:00,117 INFO L87 Difference]: Start difference. First operand 273 states and 277 transitions. Second operand has 125 states, 125 states have (on average 2.088) internal successors, (261), 124 states have internal predecessors, (261), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:23:04,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:23:04,108 INFO L93 Difference]: Finished difference Result 300 states and 308 transitions. [2022-01-31 19:23:04,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2022-01-31 19:23:04,108 INFO L78 Accepts]: Start accepts. Automaton has has 125 states, 125 states have (on average 2.088) internal successors, (261), 124 states have internal predecessors, (261), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 290 [2022-01-31 19:23:04,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:23:04,109 INFO L225 Difference]: With dead ends: 300 [2022-01-31 19:23:04,109 INFO L226 Difference]: Without dead ends: 276 [2022-01-31 19:23:04,112 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 245 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7502 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=22878, Invalid=37884, Unknown=0, NotChecked=0, Total=60762 [2022-01-31 19:23:04,112 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 263 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:23:04,112 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [266 Valid, 52 Invalid, 492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 360 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:23:04,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2022-01-31 19:23:04,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 275. [2022-01-31 19:23:04,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 267 states have (on average 1.0112359550561798) internal successors, (270), 267 states have internal predecessors, (270), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:23:04,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 279 transitions. [2022-01-31 19:23:04,209 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 279 transitions. Word has length 290 [2022-01-31 19:23:04,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:23:04,209 INFO L470 AbstractCegarLoop]: Abstraction has 275 states and 279 transitions. [2022-01-31 19:23:04,209 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 125 states, 125 states have (on average 2.088) internal successors, (261), 124 states have internal predecessors, (261), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:23:04,209 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 279 transitions. [2022-01-31 19:23:04,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2022-01-31 19:23:04,210 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:23:04,210 INFO L514 BasicCegarLoop]: trace histogram [122, 122, 6, 6, 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] [2022-01-31 19:23:04,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2022-01-31 19:23:04,210 INFO L402 AbstractCegarLoop]: === Iteration 127 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:23:04,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:23:04,210 INFO L85 PathProgramCache]: Analyzing trace with hash 53756700, now seen corresponding path program 122 times [2022-01-31 19:23:04,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:23:04,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1006759003] [2022-01-31 19:23:04,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:23:04,212 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:23:04,212 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:23:04,212 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:23:04,220 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:23:04,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:08,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:23:08,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:08,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-01-31 19:23:08,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:08,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-01-31 19:23:08,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:08,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-01-31 19:23:08,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:08,343 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:23:08,343 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:23:08,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1006759003] [2022-01-31 19:23:08,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1006759003] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:23:08,343 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:23:08,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [126] imperfect sequences [] total 126 [2022-01-31 19:23:08,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458736020] [2022-01-31 19:23:08,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:23:08,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 126 states [2022-01-31 19:23:08,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:23:08,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 126 interpolants. [2022-01-31 19:23:08,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7752, Invalid=7998, Unknown=0, NotChecked=0, Total=15750 [2022-01-31 19:23:08,346 INFO L87 Difference]: Start difference. First operand 275 states and 279 transitions. Second operand has 126 states, 126 states have (on average 2.0873015873015874) internal successors, (263), 125 states have internal predecessors, (263), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:23:12,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:23:12,157 INFO L93 Difference]: Finished difference Result 302 states and 310 transitions. [2022-01-31 19:23:12,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2022-01-31 19:23:12,158 INFO L78 Accepts]: Start accepts. Automaton has has 126 states, 126 states have (on average 2.0873015873015874) internal successors, (263), 125 states have internal predecessors, (263), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 292 [2022-01-31 19:23:12,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:23:12,158 INFO L225 Difference]: With dead ends: 302 [2022-01-31 19:23:12,159 INFO L226 Difference]: Without dead ends: 278 [2022-01-31 19:23:12,162 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 247 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7625 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=23250, Invalid=38502, Unknown=0, NotChecked=0, Total=61752 [2022-01-31 19:23:12,162 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 265 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:23:12,162 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [268 Valid, 62 Invalid, 535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 406 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:23:12,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2022-01-31 19:23:12,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 277. [2022-01-31 19:23:12,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 269 states have (on average 1.0111524163568772) internal successors, (272), 269 states have internal predecessors, (272), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:23:12,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 281 transitions. [2022-01-31 19:23:12,259 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 281 transitions. Word has length 292 [2022-01-31 19:23:12,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:23:12,259 INFO L470 AbstractCegarLoop]: Abstraction has 277 states and 281 transitions. [2022-01-31 19:23:12,259 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 126 states, 126 states have (on average 2.0873015873015874) internal successors, (263), 125 states have internal predecessors, (263), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:23:12,260 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 281 transitions. [2022-01-31 19:23:12,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2022-01-31 19:23:12,264 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:23:12,264 INFO L514 BasicCegarLoop]: trace histogram [123, 123, 6, 6, 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] [2022-01-31 19:23:12,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2022-01-31 19:23:12,266 INFO L402 AbstractCegarLoop]: === Iteration 128 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:23:12,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:23:12,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1036349310, now seen corresponding path program 123 times [2022-01-31 19:23:12,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:23:12,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [871613936] [2022-01-31 19:23:12,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:23:12,271 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:23:12,271 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:23:12,271 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:23:12,281 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:23:12,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:16,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:23:16,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:16,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-01-31 19:23:16,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:16,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-01-31 19:23:16,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:16,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2022-01-31 19:23:16,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:16,229 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:23:16,229 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:23:16,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [871613936] [2022-01-31 19:23:16,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [871613936] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:23:16,231 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:23:16,239 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [127] imperfect sequences [] total 127 [2022-01-31 19:23:16,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851408811] [2022-01-31 19:23:16,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:23:16,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 127 states [2022-01-31 19:23:16,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:23:16,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 127 interpolants. [2022-01-31 19:23:16,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7877, Invalid=8125, Unknown=0, NotChecked=0, Total=16002 [2022-01-31 19:23:16,251 INFO L87 Difference]: Start difference. First operand 277 states and 281 transitions. Second operand has 127 states, 127 states have (on average 2.0866141732283463) internal successors, (265), 126 states have internal predecessors, (265), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:23:20,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:23:20,422 INFO L93 Difference]: Finished difference Result 304 states and 312 transitions. [2022-01-31 19:23:20,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2022-01-31 19:23:20,434 INFO L78 Accepts]: Start accepts. Automaton has has 127 states, 127 states have (on average 2.0866141732283463) internal successors, (265), 126 states have internal predecessors, (265), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 294 [2022-01-31 19:23:20,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:23:20,438 INFO L225 Difference]: With dead ends: 304 [2022-01-31 19:23:20,438 INFO L226 Difference]: Without dead ends: 280 [2022-01-31 19:23:20,441 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 249 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7749 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=23625, Invalid=39125, Unknown=0, NotChecked=0, Total=62750 [2022-01-31 19:23:20,441 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 267 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 452 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:23:20,442 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [270 Valid, 72 Invalid, 583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 452 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:23:20,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2022-01-31 19:23:20,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 279. [2022-01-31 19:23:20,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 271 states have (on average 1.011070110701107) internal successors, (274), 271 states have internal predecessors, (274), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:23:20,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 283 transitions. [2022-01-31 19:23:20,564 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 283 transitions. Word has length 294 [2022-01-31 19:23:20,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:23:20,564 INFO L470 AbstractCegarLoop]: Abstraction has 279 states and 283 transitions. [2022-01-31 19:23:20,564 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 127 states, 127 states have (on average 2.0866141732283463) internal successors, (265), 126 states have internal predecessors, (265), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:23:20,565 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 283 transitions. [2022-01-31 19:23:20,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2022-01-31 19:23:20,565 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:23:20,565 INFO L514 BasicCegarLoop]: trace histogram [124, 124, 6, 6, 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] [2022-01-31 19:23:20,566 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2022-01-31 19:23:20,566 INFO L402 AbstractCegarLoop]: === Iteration 129 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:23:20,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:23:20,566 INFO L85 PathProgramCache]: Analyzing trace with hash 415042400, now seen corresponding path program 124 times [2022-01-31 19:23:20,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:23:20,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [72840845] [2022-01-31 19:23:20,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:23:20,567 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:23:20,567 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:23:20,567 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:23:20,604 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:23:20,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:23,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:23:23,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:23,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-01-31 19:23:23,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:23,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-01-31 19:23:23,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:23,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-01-31 19:23:23,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:23,774 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:23:23,775 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:23:23,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [72840845] [2022-01-31 19:23:23,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [72840845] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:23:23,775 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:23:23,775 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [128] imperfect sequences [] total 128 [2022-01-31 19:23:23,775 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412279247] [2022-01-31 19:23:23,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:23:23,776 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 128 states [2022-01-31 19:23:23,776 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:23:23,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2022-01-31 19:23:23,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8003, Invalid=8253, Unknown=0, NotChecked=0, Total=16256 [2022-01-31 19:23:23,779 INFO L87 Difference]: Start difference. First operand 279 states and 283 transitions. Second operand has 128 states, 128 states have (on average 2.0859375) internal successors, (267), 127 states have internal predecessors, (267), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:23:28,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:23:28,950 INFO L93 Difference]: Finished difference Result 306 states and 314 transitions. [2022-01-31 19:23:28,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2022-01-31 19:23:28,950 INFO L78 Accepts]: Start accepts. Automaton has has 128 states, 128 states have (on average 2.0859375) internal successors, (267), 127 states have internal predecessors, (267), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 296 [2022-01-31 19:23:28,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:23:28,951 INFO L225 Difference]: With dead ends: 306 [2022-01-31 19:23:28,951 INFO L226 Difference]: Without dead ends: 282 [2022-01-31 19:23:28,955 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 251 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7874 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=24003, Invalid=39753, Unknown=0, NotChecked=0, Total=63756 [2022-01-31 19:23:28,956 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 269 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 410 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:23:28,956 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [272 Valid, 62 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 410 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:23:28,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2022-01-31 19:23:29,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 281. [2022-01-31 19:23:29,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 273 states have (on average 1.010989010989011) internal successors, (276), 273 states have internal predecessors, (276), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:23:29,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 285 transitions. [2022-01-31 19:23:29,078 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 285 transitions. Word has length 296 [2022-01-31 19:23:29,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:23:29,078 INFO L470 AbstractCegarLoop]: Abstraction has 281 states and 285 transitions. [2022-01-31 19:23:29,078 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 128 states, 128 states have (on average 2.0859375) internal successors, (267), 127 states have internal predecessors, (267), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:23:29,078 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 285 transitions. [2022-01-31 19:23:29,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-01-31 19:23:29,079 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:23:29,079 INFO L514 BasicCegarLoop]: trace histogram [125, 125, 6, 6, 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] [2022-01-31 19:23:29,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2022-01-31 19:23:29,079 INFO L402 AbstractCegarLoop]: === Iteration 130 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:23:29,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:23:29,079 INFO L85 PathProgramCache]: Analyzing trace with hash 339556034, now seen corresponding path program 125 times [2022-01-31 19:23:29,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:23:29,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [898567805] [2022-01-31 19:23:29,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:23:29,081 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:23:29,081 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:23:29,081 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:23:29,089 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:23:29,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:32,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:23:32,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:32,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2022-01-31 19:23:32,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:32,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-01-31 19:23:32,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:32,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-01-31 19:23:32,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:32,947 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:23:32,947 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:23:32,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [898567805] [2022-01-31 19:23:32,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [898567805] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:23:32,947 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:23:32,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [129] imperfect sequences [] total 129 [2022-01-31 19:23:32,947 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722816018] [2022-01-31 19:23:32,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:23:32,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 129 states [2022-01-31 19:23:32,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:23:32,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 129 interpolants. [2022-01-31 19:23:32,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8130, Invalid=8382, Unknown=0, NotChecked=0, Total=16512 [2022-01-31 19:23:32,951 INFO L87 Difference]: Start difference. First operand 281 states and 285 transitions. Second operand has 129 states, 129 states have (on average 2.0852713178294575) internal successors, (269), 128 states have internal predecessors, (269), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:23:37,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:23:37,854 INFO L93 Difference]: Finished difference Result 308 states and 316 transitions. [2022-01-31 19:23:37,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2022-01-31 19:23:37,854 INFO L78 Accepts]: Start accepts. Automaton has has 129 states, 129 states have (on average 2.0852713178294575) internal successors, (269), 128 states have internal predecessors, (269), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 298 [2022-01-31 19:23:37,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:23:37,855 INFO L225 Difference]: With dead ends: 308 [2022-01-31 19:23:37,855 INFO L226 Difference]: Without dead ends: 284 [2022-01-31 19:23:37,859 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 253 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8000 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=24384, Invalid=40386, Unknown=0, NotChecked=0, Total=64770 [2022-01-31 19:23:37,859 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 271 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 434 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:23:37,859 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [274 Valid, 67 Invalid, 568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 434 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:23:37,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2022-01-31 19:23:37,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 283. [2022-01-31 19:23:37,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 275 states have (on average 1.010909090909091) internal successors, (278), 275 states have internal predecessors, (278), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:23:37,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 287 transitions. [2022-01-31 19:23:37,973 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 287 transitions. Word has length 298 [2022-01-31 19:23:37,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:23:37,973 INFO L470 AbstractCegarLoop]: Abstraction has 283 states and 287 transitions. [2022-01-31 19:23:37,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 129 states, 129 states have (on average 2.0852713178294575) internal successors, (269), 128 states have internal predecessors, (269), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:23:37,973 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 287 transitions. [2022-01-31 19:23:37,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2022-01-31 19:23:37,977 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:23:37,977 INFO L514 BasicCegarLoop]: trace histogram [126, 126, 6, 6, 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] [2022-01-31 19:23:37,977 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2022-01-31 19:23:37,978 INFO L402 AbstractCegarLoop]: === Iteration 131 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:23:37,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:23:37,978 INFO L85 PathProgramCache]: Analyzing trace with hash 811602340, now seen corresponding path program 126 times [2022-01-31 19:23:37,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:23:37,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [462403889] [2022-01-31 19:23:37,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:23:37,987 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:23:37,987 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:23:37,987 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:23:37,995 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:23:38,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:42,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:23:42,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:42,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-01-31 19:23:42,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:42,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-01-31 19:23:42,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:42,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-01-31 19:23:42,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:42,675 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:23:42,675 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:23:42,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [462403889] [2022-01-31 19:23:42,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [462403889] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:23:42,675 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:23:42,675 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [130] imperfect sequences [] total 130 [2022-01-31 19:23:42,675 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611510831] [2022-01-31 19:23:42,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:23:42,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 130 states [2022-01-31 19:23:42,676 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:23:42,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2022-01-31 19:23:42,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8258, Invalid=8512, Unknown=0, NotChecked=0, Total=16770 [2022-01-31 19:23:42,678 INFO L87 Difference]: Start difference. First operand 283 states and 287 transitions. Second operand has 130 states, 130 states have (on average 2.0846153846153848) internal successors, (271), 129 states have internal predecessors, (271), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:23:47,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:23:47,008 INFO L93 Difference]: Finished difference Result 310 states and 318 transitions. [2022-01-31 19:23:47,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2022-01-31 19:23:47,009 INFO L78 Accepts]: Start accepts. Automaton has has 130 states, 130 states have (on average 2.0846153846153848) internal successors, (271), 129 states have internal predecessors, (271), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 300 [2022-01-31 19:23:47,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:23:47,009 INFO L225 Difference]: With dead ends: 310 [2022-01-31 19:23:47,009 INFO L226 Difference]: Without dead ends: 286 [2022-01-31 19:23:47,013 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 255 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8127 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=24768, Invalid=41024, Unknown=0, NotChecked=0, Total=65792 [2022-01-31 19:23:47,014 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 273 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:23:47,014 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [276 Valid, 52 Invalid, 504 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 370 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:23:47,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2022-01-31 19:23:47,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 285. [2022-01-31 19:23:47,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 277 states have (on average 1.0108303249097472) internal successors, (280), 277 states have internal predecessors, (280), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:23:47,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 289 transitions. [2022-01-31 19:23:47,125 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 289 transitions. Word has length 300 [2022-01-31 19:23:47,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:23:47,127 INFO L470 AbstractCegarLoop]: Abstraction has 285 states and 289 transitions. [2022-01-31 19:23:47,127 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 130 states, 130 states have (on average 2.0846153846153848) internal successors, (271), 129 states have internal predecessors, (271), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:23:47,127 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 289 transitions. [2022-01-31 19:23:47,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2022-01-31 19:23:47,128 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:23:47,128 INFO L514 BasicCegarLoop]: trace histogram [127, 127, 6, 6, 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] [2022-01-31 19:23:47,128 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2022-01-31 19:23:47,128 INFO L402 AbstractCegarLoop]: === Iteration 132 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:23:47,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:23:47,128 INFO L85 PathProgramCache]: Analyzing trace with hash -818430970, now seen corresponding path program 127 times [2022-01-31 19:23:47,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:23:47,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1981573567] [2022-01-31 19:23:47,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:23:47,130 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:23:47,130 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:23:47,130 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:23:47,138 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:23:47,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:50,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:23:50,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:50,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-01-31 19:23:50,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:50,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-01-31 19:23:50,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:50,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2022-01-31 19:23:50,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:50,236 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:23:50,237 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:23:50,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1981573567] [2022-01-31 19:23:50,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1981573567] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:23:50,237 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:23:50,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [131] imperfect sequences [] total 131 [2022-01-31 19:23:50,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714755857] [2022-01-31 19:23:50,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:23:50,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 131 states [2022-01-31 19:23:50,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:23:50,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 131 interpolants. [2022-01-31 19:23:50,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8387, Invalid=8643, Unknown=0, NotChecked=0, Total=17030 [2022-01-31 19:23:50,240 INFO L87 Difference]: Start difference. First operand 285 states and 289 transitions. Second operand has 131 states, 131 states have (on average 2.0839694656488548) internal successors, (273), 130 states have internal predecessors, (273), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:23:55,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:23:55,310 INFO L93 Difference]: Finished difference Result 312 states and 320 transitions. [2022-01-31 19:23:55,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2022-01-31 19:23:55,311 INFO L78 Accepts]: Start accepts. Automaton has has 131 states, 131 states have (on average 2.0839694656488548) internal successors, (273), 130 states have internal predecessors, (273), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 302 [2022-01-31 19:23:55,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:23:55,311 INFO L225 Difference]: With dead ends: 312 [2022-01-31 19:23:55,311 INFO L226 Difference]: Without dead ends: 288 [2022-01-31 19:23:55,315 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 257 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8255 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=25155, Invalid=41667, Unknown=0, NotChecked=0, Total=66822 [2022-01-31 19:23:55,316 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 275 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:23:55,316 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [278 Valid, 47 Invalid, 490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 350 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:23:55,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2022-01-31 19:23:55,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 287. [2022-01-31 19:23:55,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 279 states have (on average 1.010752688172043) internal successors, (282), 279 states have internal predecessors, (282), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:23:55,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 291 transitions. [2022-01-31 19:23:55,415 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 291 transitions. Word has length 302 [2022-01-31 19:23:55,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:23:55,415 INFO L470 AbstractCegarLoop]: Abstraction has 287 states and 291 transitions. [2022-01-31 19:23:55,415 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 131 states, 131 states have (on average 2.0839694656488548) internal successors, (273), 130 states have internal predecessors, (273), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:23:55,416 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 291 transitions. [2022-01-31 19:23:55,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2022-01-31 19:23:55,416 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:23:55,416 INFO L514 BasicCegarLoop]: trace histogram [128, 128, 6, 6, 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] [2022-01-31 19:23:55,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2022-01-31 19:23:55,417 INFO L402 AbstractCegarLoop]: === Iteration 133 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:23:55,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:23:55,417 INFO L85 PathProgramCache]: Analyzing trace with hash 382621160, now seen corresponding path program 128 times [2022-01-31 19:23:55,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:23:55,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2116012460] [2022-01-31 19:23:55,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:23:55,418 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:23:55,418 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:23:55,418 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:23:55,440 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:23:55,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:58,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:23:58,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:58,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-01-31 19:23:58,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:58,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-01-31 19:23:58,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:58,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2022-01-31 19:23:58,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:58,632 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:23:58,632 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:23:58,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2116012460] [2022-01-31 19:23:58,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2116012460] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:23:58,632 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:23:58,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [132] imperfect sequences [] total 132 [2022-01-31 19:23:58,632 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752439999] [2022-01-31 19:23:58,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:23:58,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 132 states [2022-01-31 19:23:58,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:23:58,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants. [2022-01-31 19:23:58,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8517, Invalid=8775, Unknown=0, NotChecked=0, Total=17292 [2022-01-31 19:23:58,637 INFO L87 Difference]: Start difference. First operand 287 states and 291 transitions. Second operand has 132 states, 132 states have (on average 2.0833333333333335) internal successors, (275), 131 states have internal predecessors, (275), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:24:02,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:24:02,807 INFO L93 Difference]: Finished difference Result 314 states and 322 transitions. [2022-01-31 19:24:02,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2022-01-31 19:24:02,807 INFO L78 Accepts]: Start accepts. Automaton has has 132 states, 132 states have (on average 2.0833333333333335) internal successors, (275), 131 states have internal predecessors, (275), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 304 [2022-01-31 19:24:02,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:24:02,808 INFO L225 Difference]: With dead ends: 314 [2022-01-31 19:24:02,808 INFO L226 Difference]: Without dead ends: 290 [2022-01-31 19:24:02,812 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 259 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8384 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=25545, Invalid=42315, Unknown=0, NotChecked=0, Total=67860 [2022-01-31 19:24:02,812 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 277 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:24:02,812 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [280 Valid, 57 Invalid, 534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 396 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:24:02,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2022-01-31 19:24:02,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 289. [2022-01-31 19:24:02,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 281 states have (on average 1.01067615658363) internal successors, (284), 281 states have internal predecessors, (284), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:24:02,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 293 transitions. [2022-01-31 19:24:02,915 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 293 transitions. Word has length 304 [2022-01-31 19:24:02,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:24:02,915 INFO L470 AbstractCegarLoop]: Abstraction has 289 states and 293 transitions. [2022-01-31 19:24:02,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 132 states, 132 states have (on average 2.0833333333333335) internal successors, (275), 131 states have internal predecessors, (275), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:24:02,915 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 293 transitions. [2022-01-31 19:24:02,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2022-01-31 19:24:02,916 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:24:02,916 INFO L514 BasicCegarLoop]: trace histogram [129, 129, 6, 6, 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] [2022-01-31 19:24:02,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2022-01-31 19:24:02,916 INFO L402 AbstractCegarLoop]: === Iteration 134 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:24:02,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:24:02,916 INFO L85 PathProgramCache]: Analyzing trace with hash -752484534, now seen corresponding path program 129 times [2022-01-31 19:24:02,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:24:02,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1262901195] [2022-01-31 19:24:02,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:24:02,918 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:24:02,918 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:24:02,918 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:24:02,926 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:24:03,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:24:06,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:24:06,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:24:06,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2022-01-31 19:24:06,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:24:06,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-01-31 19:24:06,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:24:06,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-01-31 19:24:06,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:24:06,696 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:24:06,696 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:24:06,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1262901195] [2022-01-31 19:24:06,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1262901195] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:24:06,697 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:24:06,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [133] imperfect sequences [] total 133 [2022-01-31 19:24:06,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494802322] [2022-01-31 19:24:06,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:24:06,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 133 states [2022-01-31 19:24:06,697 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:24:06,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 133 interpolants. [2022-01-31 19:24:06,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8648, Invalid=8908, Unknown=0, NotChecked=0, Total=17556 [2022-01-31 19:24:06,701 INFO L87 Difference]: Start difference. First operand 289 states and 293 transitions. Second operand has 133 states, 133 states have (on average 2.082706766917293) internal successors, (277), 132 states have internal predecessors, (277), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:24:10,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:24:10,872 INFO L93 Difference]: Finished difference Result 316 states and 324 transitions. [2022-01-31 19:24:10,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2022-01-31 19:24:10,872 INFO L78 Accepts]: Start accepts. Automaton has has 133 states, 133 states have (on average 2.082706766917293) internal successors, (277), 132 states have internal predecessors, (277), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 306 [2022-01-31 19:24:10,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:24:10,873 INFO L225 Difference]: With dead ends: 316 [2022-01-31 19:24:10,873 INFO L226 Difference]: Without dead ends: 292 [2022-01-31 19:24:10,877 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 261 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8514 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=25938, Invalid=42968, Unknown=0, NotChecked=0, Total=68906 [2022-01-31 19:24:10,877 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 279 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:24:10,877 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [282 Valid, 67 Invalid, 581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 442 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:24:10,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2022-01-31 19:24:10,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 291. [2022-01-31 19:24:10,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 283 states have (on average 1.010600706713781) internal successors, (286), 283 states have internal predecessors, (286), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:24:10,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 295 transitions. [2022-01-31 19:24:10,983 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 295 transitions. Word has length 306 [2022-01-31 19:24:10,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:24:10,984 INFO L470 AbstractCegarLoop]: Abstraction has 291 states and 295 transitions. [2022-01-31 19:24:10,984 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 133 states, 133 states have (on average 2.082706766917293) internal successors, (277), 132 states have internal predecessors, (277), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:24:10,984 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 295 transitions. [2022-01-31 19:24:10,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2022-01-31 19:24:10,985 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:24:10,985 INFO L514 BasicCegarLoop]: trace histogram [130, 130, 6, 6, 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] [2022-01-31 19:24:10,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2022-01-31 19:24:10,985 INFO L402 AbstractCegarLoop]: === Iteration 135 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:24:10,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:24:10,985 INFO L85 PathProgramCache]: Analyzing trace with hash -667363284, now seen corresponding path program 130 times [2022-01-31 19:24:10,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:24:10,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1606707293] [2022-01-31 19:24:10,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:24:10,986 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:24:10,987 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:24:10,987 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:24:11,005 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:24:11,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:24:14,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:24:14,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:24:14,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-01-31 19:24:14,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:24:14,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-01-31 19:24:14,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:24:14,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-01-31 19:24:14,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:24:14,723 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:24:14,724 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:24:14,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1606707293] [2022-01-31 19:24:14,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1606707293] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:24:14,724 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:24:14,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [134] imperfect sequences [] total 134 [2022-01-31 19:24:14,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553789158] [2022-01-31 19:24:14,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:24:14,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 134 states [2022-01-31 19:24:14,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:24:14,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants. [2022-01-31 19:24:14,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8780, Invalid=9042, Unknown=0, NotChecked=0, Total=17822 [2022-01-31 19:24:14,726 INFO L87 Difference]: Start difference. First operand 291 states and 295 transitions. Second operand has 134 states, 134 states have (on average 2.082089552238806) internal successors, (279), 133 states have internal predecessors, (279), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:24:18,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:24:18,969 INFO L93 Difference]: Finished difference Result 318 states and 326 transitions. [2022-01-31 19:24:18,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2022-01-31 19:24:18,969 INFO L78 Accepts]: Start accepts. Automaton has has 134 states, 134 states have (on average 2.082089552238806) internal successors, (279), 133 states have internal predecessors, (279), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 308 [2022-01-31 19:24:18,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:24:18,970 INFO L225 Difference]: With dead ends: 318 [2022-01-31 19:24:18,970 INFO L226 Difference]: Without dead ends: 294 [2022-01-31 19:24:18,974 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 263 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8645 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=26334, Invalid=43626, Unknown=0, NotChecked=0, Total=69960 [2022-01-31 19:24:18,974 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 281 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:24:18,974 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [284 Valid, 57 Invalid, 540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 400 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:24:18,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2022-01-31 19:24:19,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 293. [2022-01-31 19:24:19,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 285 states have (on average 1.0105263157894737) internal successors, (288), 285 states have internal predecessors, (288), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:24:19,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 297 transitions. [2022-01-31 19:24:19,094 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 297 transitions. Word has length 308 [2022-01-31 19:24:19,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:24:19,094 INFO L470 AbstractCegarLoop]: Abstraction has 293 states and 297 transitions. [2022-01-31 19:24:19,094 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 134 states, 134 states have (on average 2.082089552238806) internal successors, (279), 133 states have internal predecessors, (279), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:24:19,094 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 297 transitions. [2022-01-31 19:24:19,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-01-31 19:24:19,095 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:24:19,095 INFO L514 BasicCegarLoop]: trace histogram [131, 131, 6, 6, 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] [2022-01-31 19:24:19,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2022-01-31 19:24:19,095 INFO L402 AbstractCegarLoop]: === Iteration 136 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:24:19,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:24:19,096 INFO L85 PathProgramCache]: Analyzing trace with hash -470220658, now seen corresponding path program 131 times [2022-01-31 19:24:19,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:24:19,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [574899361] [2022-01-31 19:24:19,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:24:19,097 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:24:19,097 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:24:19,097 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:24:19,107 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:24:19,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:24:22,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:24:22,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:24:22,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-01-31 19:24:22,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:24:22,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2022-01-31 19:24:22,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:24:22,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2022-01-31 19:24:22,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:24:22,624 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:24:22,625 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:24:22,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [574899361] [2022-01-31 19:24:22,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [574899361] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:24:22,625 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:24:22,625 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [135] imperfect sequences [] total 135 [2022-01-31 19:24:22,625 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162130857] [2022-01-31 19:24:22,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:24:22,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 135 states [2022-01-31 19:24:22,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:24:22,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 135 interpolants. [2022-01-31 19:24:22,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8913, Invalid=9177, Unknown=0, NotChecked=0, Total=18090 [2022-01-31 19:24:22,628 INFO L87 Difference]: Start difference. First operand 293 states and 297 transitions. Second operand has 135 states, 135 states have (on average 2.0814814814814815) internal successors, (281), 134 states have internal predecessors, (281), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:24:26,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:24:26,865 INFO L93 Difference]: Finished difference Result 320 states and 328 transitions. [2022-01-31 19:24:26,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2022-01-31 19:24:26,865 INFO L78 Accepts]: Start accepts. Automaton has has 135 states, 135 states have (on average 2.0814814814814815) internal successors, (281), 134 states have internal predecessors, (281), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 310 [2022-01-31 19:24:26,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:24:26,866 INFO L225 Difference]: With dead ends: 320 [2022-01-31 19:24:26,866 INFO L226 Difference]: Without dead ends: 296 [2022-01-31 19:24:26,871 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 265 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8777 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=26733, Invalid=44289, Unknown=0, NotChecked=0, Total=71022 [2022-01-31 19:24:26,871 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 283 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 402 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:24:26,871 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [286 Valid, 57 Invalid, 540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 402 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:24:26,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2022-01-31 19:24:26,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 295. [2022-01-31 19:24:26,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 287 states have (on average 1.0104529616724738) internal successors, (290), 287 states have internal predecessors, (290), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:24:26,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 299 transitions. [2022-01-31 19:24:26,991 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 299 transitions. Word has length 310 [2022-01-31 19:24:26,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:24:26,991 INFO L470 AbstractCegarLoop]: Abstraction has 295 states and 299 transitions. [2022-01-31 19:24:26,992 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 135 states, 135 states have (on average 2.0814814814814815) internal successors, (281), 134 states have internal predecessors, (281), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:24:26,992 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 299 transitions. [2022-01-31 19:24:26,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2022-01-31 19:24:26,993 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:24:26,993 INFO L514 BasicCegarLoop]: trace histogram [132, 132, 6, 6, 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] [2022-01-31 19:24:26,993 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2022-01-31 19:24:26,993 INFO L402 AbstractCegarLoop]: === Iteration 137 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:24:26,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:24:26,993 INFO L85 PathProgramCache]: Analyzing trace with hash 5281904, now seen corresponding path program 132 times [2022-01-31 19:24:26,993 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:24:26,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1346661970] [2022-01-31 19:24:26,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:24:26,994 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:24:26,994 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:24:26,995 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:24:27,005 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:24:27,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:24:30,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:24:30,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:24:30,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-01-31 19:24:30,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:24:30,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-01-31 19:24:30,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:24:30,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2022-01-31 19:24:30,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:24:30,775 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:24:30,775 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:24:30,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1346661970] [2022-01-31 19:24:30,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1346661970] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:24:30,775 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:24:30,775 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [136] imperfect sequences [] total 136 [2022-01-31 19:24:30,775 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798520403] [2022-01-31 19:24:30,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:24:30,776 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 136 states [2022-01-31 19:24:30,776 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:24:30,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 136 interpolants. [2022-01-31 19:24:30,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9047, Invalid=9313, Unknown=0, NotChecked=0, Total=18360 [2022-01-31 19:24:30,778 INFO L87 Difference]: Start difference. First operand 295 states and 299 transitions. Second operand has 136 states, 136 states have (on average 2.0808823529411766) internal successors, (283), 135 states have internal predecessors, (283), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:24:35,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:24:35,270 INFO L93 Difference]: Finished difference Result 322 states and 330 transitions. [2022-01-31 19:24:35,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2022-01-31 19:24:35,270 INFO L78 Accepts]: Start accepts. Automaton has has 136 states, 136 states have (on average 2.0808823529411766) internal successors, (283), 135 states have internal predecessors, (283), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 312 [2022-01-31 19:24:35,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:24:35,271 INFO L225 Difference]: With dead ends: 322 [2022-01-31 19:24:35,271 INFO L226 Difference]: Without dead ends: 298 [2022-01-31 19:24:35,274 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 267 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8910 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=27135, Invalid=44957, Unknown=0, NotChecked=0, Total=72092 [2022-01-31 19:24:35,274 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 285 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:24:35,274 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [288 Valid, 67 Invalid, 591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:24:35,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2022-01-31 19:24:35,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 297. [2022-01-31 19:24:35,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 289 states have (on average 1.0103806228373702) internal successors, (292), 289 states have internal predecessors, (292), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:24:35,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 301 transitions. [2022-01-31 19:24:35,381 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 301 transitions. Word has length 312 [2022-01-31 19:24:35,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:24:35,381 INFO L470 AbstractCegarLoop]: Abstraction has 297 states and 301 transitions. [2022-01-31 19:24:35,382 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 136 states, 136 states have (on average 2.0808823529411766) internal successors, (283), 135 states have internal predecessors, (283), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:24:35,382 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 301 transitions. [2022-01-31 19:24:35,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2022-01-31 19:24:35,383 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:24:35,383 INFO L514 BasicCegarLoop]: trace histogram [133, 133, 6, 6, 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] [2022-01-31 19:24:35,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2022-01-31 19:24:35,383 INFO L402 AbstractCegarLoop]: === Iteration 138 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:24:35,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:24:35,383 INFO L85 PathProgramCache]: Analyzing trace with hash 1696710610, now seen corresponding path program 133 times [2022-01-31 19:24:35,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:24:35,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [69371735] [2022-01-31 19:24:35,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:24:35,384 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:24:35,384 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:24:35,384 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:24:35,394 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:24:35,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:24:39,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:24:39,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:24:39,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2022-01-31 19:24:39,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:24:39,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-01-31 19:24:39,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:24:39,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-01-31 19:24:39,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:24:39,070 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:24:39,070 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:24:39,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [69371735] [2022-01-31 19:24:39,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [69371735] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:24:39,071 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:24:39,071 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [137] imperfect sequences [] total 137 [2022-01-31 19:24:39,071 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349338437] [2022-01-31 19:24:39,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:24:39,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 137 states [2022-01-31 19:24:39,071 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:24:39,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 137 interpolants. [2022-01-31 19:24:39,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9182, Invalid=9450, Unknown=0, NotChecked=0, Total=18632 [2022-01-31 19:24:39,075 INFO L87 Difference]: Start difference. First operand 297 states and 301 transitions. Second operand has 137 states, 137 states have (on average 2.0802919708029197) internal successors, (285), 136 states have internal predecessors, (285), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:24:43,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:24:43,493 INFO L93 Difference]: Finished difference Result 324 states and 332 transitions. [2022-01-31 19:24:43,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2022-01-31 19:24:43,493 INFO L78 Accepts]: Start accepts. Automaton has has 137 states, 137 states have (on average 2.0802919708029197) internal successors, (285), 136 states have internal predecessors, (285), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 314 [2022-01-31 19:24:43,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:24:43,494 INFO L225 Difference]: With dead ends: 324 [2022-01-31 19:24:43,494 INFO L226 Difference]: Without dead ends: 300 [2022-01-31 19:24:43,497 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 269 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9044 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=27540, Invalid=45630, Unknown=0, NotChecked=0, Total=73170 [2022-01-31 19:24:43,497 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 287 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:24:43,498 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [290 Valid, 57 Invalid, 548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 406 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:24:43,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2022-01-31 19:24:43,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 299. [2022-01-31 19:24:43,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 291 states have (on average 1.0103092783505154) internal successors, (294), 291 states have internal predecessors, (294), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:24:43,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 303 transitions. [2022-01-31 19:24:43,607 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 303 transitions. Word has length 314 [2022-01-31 19:24:43,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:24:43,607 INFO L470 AbstractCegarLoop]: Abstraction has 299 states and 303 transitions. [2022-01-31 19:24:43,608 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 137 states, 137 states have (on average 2.0802919708029197) internal successors, (285), 136 states have internal predecessors, (285), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:24:43,608 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 303 transitions. [2022-01-31 19:24:43,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2022-01-31 19:24:43,608 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:24:43,609 INFO L514 BasicCegarLoop]: trace histogram [134, 134, 6, 6, 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] [2022-01-31 19:24:43,609 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2022-01-31 19:24:43,609 INFO L402 AbstractCegarLoop]: === Iteration 139 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:24:43,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:24:43,609 INFO L85 PathProgramCache]: Analyzing trace with hash -632908108, now seen corresponding path program 134 times [2022-01-31 19:24:43,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:24:43,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [921626943] [2022-01-31 19:24:43,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:24:43,610 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:24:43,610 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:24:43,610 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:24:43,620 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:24:43,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:24:47,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:24:47,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:24:47,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-01-31 19:24:47,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:24:47,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-01-31 19:24:47,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:24:47,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-01-31 19:24:47,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:24:47,060 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:24:47,060 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:24:47,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [921626943] [2022-01-31 19:24:47,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [921626943] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:24:47,060 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:24:47,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [138] imperfect sequences [] total 138 [2022-01-31 19:24:47,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818486587] [2022-01-31 19:24:47,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:24:47,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 138 states [2022-01-31 19:24:47,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:24:47,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 138 interpolants. [2022-01-31 19:24:47,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9318, Invalid=9588, Unknown=0, NotChecked=0, Total=18906 [2022-01-31 19:24:47,064 INFO L87 Difference]: Start difference. First operand 299 states and 303 transitions. Second operand has 138 states, 138 states have (on average 2.079710144927536) internal successors, (287), 137 states have internal predecessors, (287), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:24:51,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:24:51,786 INFO L93 Difference]: Finished difference Result 326 states and 334 transitions. [2022-01-31 19:24:51,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2022-01-31 19:24:51,787 INFO L78 Accepts]: Start accepts. Automaton has has 138 states, 138 states have (on average 2.079710144927536) internal successors, (287), 137 states have internal predecessors, (287), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 316 [2022-01-31 19:24:51,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:24:51,787 INFO L225 Difference]: With dead ends: 326 [2022-01-31 19:24:51,788 INFO L226 Difference]: Without dead ends: 302 [2022-01-31 19:24:51,791 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 271 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9179 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=27948, Invalid=46308, Unknown=0, NotChecked=0, Total=74256 [2022-01-31 19:24:51,792 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 289 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 19:24:51,792 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [292 Valid, 62 Invalid, 576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 430 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 19:24:51,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2022-01-31 19:24:51,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 301. [2022-01-31 19:24:51,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 293 states have (on average 1.0102389078498293) internal successors, (296), 293 states have internal predecessors, (296), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:24:51,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 305 transitions. [2022-01-31 19:24:51,902 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 305 transitions. Word has length 316 [2022-01-31 19:24:51,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:24:51,902 INFO L470 AbstractCegarLoop]: Abstraction has 301 states and 305 transitions. [2022-01-31 19:24:51,903 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 138 states, 138 states have (on average 2.079710144927536) internal successors, (287), 137 states have internal predecessors, (287), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:24:51,903 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 305 transitions. [2022-01-31 19:24:51,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2022-01-31 19:24:51,904 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:24:51,904 INFO L514 BasicCegarLoop]: trace histogram [135, 135, 6, 6, 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] [2022-01-31 19:24:51,904 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2022-01-31 19:24:51,904 INFO L402 AbstractCegarLoop]: === Iteration 140 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:24:51,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:24:51,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1718534890, now seen corresponding path program 135 times [2022-01-31 19:24:51,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:24:51,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1785847745] [2022-01-31 19:24:51,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:24:51,905 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:24:51,906 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:24:51,906 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:24:51,916 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:24:51,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:24:55,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:24:55,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:24:55,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-01-31 19:24:55,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:24:55,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-01-31 19:24:55,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:24:55,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2022-01-31 19:24:55,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:24:55,467 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:24:55,467 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:24:55,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1785847745] [2022-01-31 19:24:55,467 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1785847745] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:24:55,467 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:24:55,467 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [139] imperfect sequences [] total 139 [2022-01-31 19:24:55,467 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930654281] [2022-01-31 19:24:55,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:24:55,467 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 139 states [2022-01-31 19:24:55,468 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:24:55,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 139 interpolants. [2022-01-31 19:24:55,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9455, Invalid=9727, Unknown=0, NotChecked=0, Total=19182 [2022-01-31 19:24:55,470 INFO L87 Difference]: Start difference. First operand 301 states and 305 transitions. Second operand has 139 states, 139 states have (on average 2.079136690647482) internal successors, (289), 138 states have internal predecessors, (289), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:25:00,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:25:00,074 INFO L93 Difference]: Finished difference Result 328 states and 336 transitions. [2022-01-31 19:25:00,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2022-01-31 19:25:00,074 INFO L78 Accepts]: Start accepts. Automaton has has 139 states, 139 states have (on average 2.079136690647482) internal successors, (289), 138 states have internal predecessors, (289), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 318 [2022-01-31 19:25:00,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:25:00,075 INFO L225 Difference]: With dead ends: 328 [2022-01-31 19:25:00,075 INFO L226 Difference]: Without dead ends: 304 [2022-01-31 19:25:00,079 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 273 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9315 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=28359, Invalid=46991, Unknown=0, NotChecked=0, Total=75350 [2022-01-31 19:25:00,080 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 291 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 454 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:25:00,080 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [294 Valid, 67 Invalid, 599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 454 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:25:00,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2022-01-31 19:25:00,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 303. [2022-01-31 19:25:00,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 295 states have (on average 1.0101694915254238) internal successors, (298), 295 states have internal predecessors, (298), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:25:00,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 307 transitions. [2022-01-31 19:25:00,206 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 307 transitions. Word has length 318 [2022-01-31 19:25:00,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:25:00,206 INFO L470 AbstractCegarLoop]: Abstraction has 303 states and 307 transitions. [2022-01-31 19:25:00,206 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 139 states, 139 states have (on average 2.079136690647482) internal successors, (289), 138 states have internal predecessors, (289), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:25:00,207 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 307 transitions. [2022-01-31 19:25:00,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-01-31 19:25:00,207 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:25:00,208 INFO L514 BasicCegarLoop]: trace histogram [136, 136, 6, 6, 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] [2022-01-31 19:25:00,208 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2022-01-31 19:25:00,208 INFO L402 AbstractCegarLoop]: === Iteration 141 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:25:00,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:25:00,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1328819464, now seen corresponding path program 136 times [2022-01-31 19:25:00,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:25:00,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [545284827] [2022-01-31 19:25:00,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:25:00,209 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:25:00,209 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:25:00,209 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:25:00,219 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:25:00,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:25:05,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:25:05,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:25:05,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-01-31 19:25:05,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:25:05,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-01-31 19:25:05,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:25:05,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2022-01-31 19:25:05,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:25:05,176 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:25:05,176 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:25:05,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [545284827] [2022-01-31 19:25:05,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [545284827] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:25:05,176 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:25:05,176 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [140] imperfect sequences [] total 140 [2022-01-31 19:25:05,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169568411] [2022-01-31 19:25:05,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:25:05,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 140 states [2022-01-31 19:25:05,177 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:25:05,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 140 interpolants. [2022-01-31 19:25:05,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9593, Invalid=9867, Unknown=0, NotChecked=0, Total=19460 [2022-01-31 19:25:05,180 INFO L87 Difference]: Start difference. First operand 303 states and 307 transitions. Second operand has 140 states, 140 states have (on average 2.0785714285714287) internal successors, (291), 139 states have internal predecessors, (291), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:25:10,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:25:10,221 INFO L93 Difference]: Finished difference Result 330 states and 338 transitions. [2022-01-31 19:25:10,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2022-01-31 19:25:10,221 INFO L78 Accepts]: Start accepts. Automaton has has 140 states, 140 states have (on average 2.0785714285714287) internal successors, (291), 139 states have internal predecessors, (291), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 320 [2022-01-31 19:25:10,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:25:10,222 INFO L225 Difference]: With dead ends: 330 [2022-01-31 19:25:10,222 INFO L226 Difference]: Without dead ends: 306 [2022-01-31 19:25:10,225 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 275 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9452 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=28773, Invalid=47679, Unknown=0, NotChecked=0, Total=76452 [2022-01-31 19:25:10,225 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 293 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:25:10,225 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [296 Valid, 47 Invalid, 513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:25:10,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2022-01-31 19:25:10,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 305. [2022-01-31 19:25:10,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 297 states have (on average 1.0101010101010102) internal successors, (300), 297 states have internal predecessors, (300), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:25:10,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 309 transitions. [2022-01-31 19:25:10,341 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 309 transitions. Word has length 320 [2022-01-31 19:25:10,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:25:10,341 INFO L470 AbstractCegarLoop]: Abstraction has 305 states and 309 transitions. [2022-01-31 19:25:10,341 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 140 states, 140 states have (on average 2.0785714285714287) internal successors, (291), 139 states have internal predecessors, (291), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:25:10,342 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 309 transitions. [2022-01-31 19:25:10,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2022-01-31 19:25:10,343 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:25:10,343 INFO L514 BasicCegarLoop]: trace histogram [137, 137, 6, 6, 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] [2022-01-31 19:25:10,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2022-01-31 19:25:10,343 INFO L402 AbstractCegarLoop]: === Iteration 142 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:25:10,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:25:10,343 INFO L85 PathProgramCache]: Analyzing trace with hash -474449830, now seen corresponding path program 137 times [2022-01-31 19:25:10,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:25:10,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [203880572] [2022-01-31 19:25:10,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:25:10,344 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:25:10,344 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:25:10,344 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:25:10,355 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:25:10,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:25:14,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:25:14,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:25:14,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2022-01-31 19:25:14,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:25:14,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-01-31 19:25:14,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:25:14,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-01-31 19:25:14,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:25:14,022 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:25:14,022 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:25:14,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [203880572] [2022-01-31 19:25:14,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [203880572] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:25:14,022 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:25:14,022 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [141] imperfect sequences [] total 141 [2022-01-31 19:25:14,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767849779] [2022-01-31 19:25:14,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:25:14,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 141 states [2022-01-31 19:25:14,022 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:25:14,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 141 interpolants. [2022-01-31 19:25:14,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9732, Invalid=10008, Unknown=0, NotChecked=0, Total=19740 [2022-01-31 19:25:14,026 INFO L87 Difference]: Start difference. First operand 305 states and 309 transitions. Second operand has 141 states, 141 states have (on average 2.078014184397163) internal successors, (293), 140 states have internal predecessors, (293), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:25:18,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:25:18,701 INFO L93 Difference]: Finished difference Result 332 states and 340 transitions. [2022-01-31 19:25:18,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2022-01-31 19:25:18,701 INFO L78 Accepts]: Start accepts. Automaton has has 141 states, 141 states have (on average 2.078014184397163) internal successors, (293), 140 states have internal predecessors, (293), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 322 [2022-01-31 19:25:18,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:25:18,702 INFO L225 Difference]: With dead ends: 332 [2022-01-31 19:25:18,702 INFO L226 Difference]: Without dead ends: 308 [2022-01-31 19:25:18,706 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 277 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9590 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=29190, Invalid=48372, Unknown=0, NotChecked=0, Total=77562 [2022-01-31 19:25:18,706 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 295 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:25:18,706 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [298 Valid, 62 Invalid, 584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:25:18,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2022-01-31 19:25:18,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 307. [2022-01-31 19:25:18,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 299 states have (on average 1.0100334448160535) internal successors, (302), 299 states have internal predecessors, (302), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:25:18,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 311 transitions. [2022-01-31 19:25:18,846 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 311 transitions. Word has length 322 [2022-01-31 19:25:18,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:25:18,846 INFO L470 AbstractCegarLoop]: Abstraction has 307 states and 311 transitions. [2022-01-31 19:25:18,846 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 141 states, 141 states have (on average 2.078014184397163) internal successors, (293), 140 states have internal predecessors, (293), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:25:18,846 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 311 transitions. [2022-01-31 19:25:18,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2022-01-31 19:25:18,847 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:25:18,847 INFO L514 BasicCegarLoop]: trace histogram [138, 138, 6, 6, 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] [2022-01-31 19:25:18,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2022-01-31 19:25:18,847 INFO L402 AbstractCegarLoop]: === Iteration 143 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:25:18,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:25:18,848 INFO L85 PathProgramCache]: Analyzing trace with hash 236014908, now seen corresponding path program 138 times [2022-01-31 19:25:18,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:25:18,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1137421916] [2022-01-31 19:25:18,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:25:18,849 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:25:18,849 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:25:18,849 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:25:18,859 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:25:18,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:25:23,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:25:23,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:25:23,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-01-31 19:25:23,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:25:23,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-01-31 19:25:23,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:25:23,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-01-31 19:25:23,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:25:23,243 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:25:23,243 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:25:23,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1137421916] [2022-01-31 19:25:23,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1137421916] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:25:23,244 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:25:23,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [142] imperfect sequences [] total 142 [2022-01-31 19:25:23,244 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5873026] [2022-01-31 19:25:23,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:25:23,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 142 states [2022-01-31 19:25:23,244 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:25:23,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 142 interpolants. [2022-01-31 19:25:23,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9872, Invalid=10150, Unknown=0, NotChecked=0, Total=20022 [2022-01-31 19:25:23,247 INFO L87 Difference]: Start difference. First operand 307 states and 311 transitions. Second operand has 142 states, 142 states have (on average 2.0774647887323945) internal successors, (295), 141 states have internal predecessors, (295), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:25:28,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:25:28,985 INFO L93 Difference]: Finished difference Result 334 states and 342 transitions. [2022-01-31 19:25:28,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2022-01-31 19:25:28,985 INFO L78 Accepts]: Start accepts. Automaton has has 142 states, 142 states have (on average 2.0774647887323945) internal successors, (295), 141 states have internal predecessors, (295), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 324 [2022-01-31 19:25:28,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:25:28,986 INFO L225 Difference]: With dead ends: 334 [2022-01-31 19:25:28,986 INFO L226 Difference]: Without dead ends: 310 [2022-01-31 19:25:28,989 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 279 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9729 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=29610, Invalid=49070, Unknown=0, NotChecked=0, Total=78680 [2022-01-31 19:25:28,990 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 297 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:25:28,990 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [300 Valid, 57 Invalid, 565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 416 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:25:28,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2022-01-31 19:25:29,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 309. [2022-01-31 19:25:29,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 301 states have (on average 1.0099667774086378) internal successors, (304), 301 states have internal predecessors, (304), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:25:29,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 313 transitions. [2022-01-31 19:25:29,107 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 313 transitions. Word has length 324 [2022-01-31 19:25:29,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:25:29,107 INFO L470 AbstractCegarLoop]: Abstraction has 309 states and 313 transitions. [2022-01-31 19:25:29,107 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 142 states, 142 states have (on average 2.0774647887323945) internal successors, (295), 141 states have internal predecessors, (295), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:25:29,107 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 313 transitions. [2022-01-31 19:25:29,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2022-01-31 19:25:29,108 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:25:29,108 INFO L514 BasicCegarLoop]: trace histogram [139, 139, 6, 6, 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] [2022-01-31 19:25:29,108 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2022-01-31 19:25:29,109 INFO L402 AbstractCegarLoop]: === Iteration 144 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:25:29,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:25:29,109 INFO L85 PathProgramCache]: Analyzing trace with hash 92828062, now seen corresponding path program 139 times [2022-01-31 19:25:29,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:25:29,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1073521040] [2022-01-31 19:25:29,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:25:29,110 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:25:29,110 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:25:29,110 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:25:29,121 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:25:29,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:25:32,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:25:32,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:25:32,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-01-31 19:25:32,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:25:32,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-01-31 19:25:32,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:25:32,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2022-01-31 19:25:32,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:25:32,893 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:25:32,893 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:25:32,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1073521040] [2022-01-31 19:25:32,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1073521040] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:25:32,893 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:25:32,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [143] imperfect sequences [] total 143 [2022-01-31 19:25:32,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648153241] [2022-01-31 19:25:32,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:25:32,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 143 states [2022-01-31 19:25:32,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:25:32,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 143 interpolants. [2022-01-31 19:25:32,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10013, Invalid=10293, Unknown=0, NotChecked=0, Total=20306 [2022-01-31 19:25:32,898 INFO L87 Difference]: Start difference. First operand 309 states and 313 transitions. Second operand has 143 states, 143 states have (on average 2.076923076923077) internal successors, (297), 142 states have internal predecessors, (297), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:25:37,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:25:37,871 INFO L93 Difference]: Finished difference Result 336 states and 344 transitions. [2022-01-31 19:25:37,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2022-01-31 19:25:37,871 INFO L78 Accepts]: Start accepts. Automaton has has 143 states, 143 states have (on average 2.076923076923077) internal successors, (297), 142 states have internal predecessors, (297), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 326 [2022-01-31 19:25:37,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:25:37,872 INFO L225 Difference]: With dead ends: 336 [2022-01-31 19:25:37,872 INFO L226 Difference]: Without dead ends: 312 [2022-01-31 19:25:37,876 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 281 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9869 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=30033, Invalid=49773, Unknown=0, NotChecked=0, Total=79806 [2022-01-31 19:25:37,877 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 299 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:25:37,877 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [302 Valid, 67 Invalid, 609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 462 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:25:37,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2022-01-31 19:25:38,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 311. [2022-01-31 19:25:38,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 303 states have (on average 1.00990099009901) internal successors, (306), 303 states have internal predecessors, (306), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:25:38,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 315 transitions. [2022-01-31 19:25:38,022 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 315 transitions. Word has length 326 [2022-01-31 19:25:38,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:25:38,022 INFO L470 AbstractCegarLoop]: Abstraction has 311 states and 315 transitions. [2022-01-31 19:25:38,022 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 143 states, 143 states have (on average 2.076923076923077) internal successors, (297), 142 states have internal predecessors, (297), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:25:38,022 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 315 transitions. [2022-01-31 19:25:38,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2022-01-31 19:25:38,023 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:25:38,024 INFO L514 BasicCegarLoop]: trace histogram [140, 140, 6, 6, 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] [2022-01-31 19:25:38,024 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2022-01-31 19:25:38,024 INFO L402 AbstractCegarLoop]: === Iteration 145 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:25:38,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:25:38,024 INFO L85 PathProgramCache]: Analyzing trace with hash -70777472, now seen corresponding path program 140 times [2022-01-31 19:25:38,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:25:38,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [516454265] [2022-01-31 19:25:38,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:25:38,025 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:25:38,025 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:25:38,025 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:25:38,036 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:25:38,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:25:43,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:25:43,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:25:43,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-01-31 19:25:43,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:25:43,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-01-31 19:25:43,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:25:43,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2022-01-31 19:25:43,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:25:43,433 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:25:43,433 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:25:43,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [516454265] [2022-01-31 19:25:43,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [516454265] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:25:43,433 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:25:43,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [144] imperfect sequences [] total 144 [2022-01-31 19:25:43,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283801446] [2022-01-31 19:25:43,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:25:43,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 144 states [2022-01-31 19:25:43,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:25:43,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 144 interpolants. [2022-01-31 19:25:43,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10155, Invalid=10437, Unknown=0, NotChecked=0, Total=20592 [2022-01-31 19:25:43,437 INFO L87 Difference]: Start difference. First operand 311 states and 315 transitions. Second operand has 144 states, 144 states have (on average 2.076388888888889) internal successors, (299), 143 states have internal predecessors, (299), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:25:48,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:25:48,504 INFO L93 Difference]: Finished difference Result 338 states and 346 transitions. [2022-01-31 19:25:48,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2022-01-31 19:25:48,504 INFO L78 Accepts]: Start accepts. Automaton has has 144 states, 144 states have (on average 2.076388888888889) internal successors, (299), 143 states have internal predecessors, (299), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 328 [2022-01-31 19:25:48,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:25:48,505 INFO L225 Difference]: With dead ends: 338 [2022-01-31 19:25:48,505 INFO L226 Difference]: Without dead ends: 314 [2022-01-31 19:25:48,508 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 283 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10010 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=30459, Invalid=50481, Unknown=0, NotChecked=0, Total=80940 [2022-01-31 19:25:48,508 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 301 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:25:48,509 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [304 Valid, 47 Invalid, 526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 376 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:25:48,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2022-01-31 19:25:48,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 313. [2022-01-31 19:25:48,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 305 states have (on average 1.0098360655737706) internal successors, (308), 305 states have internal predecessors, (308), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:25:48,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 317 transitions. [2022-01-31 19:25:48,629 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 317 transitions. Word has length 328 [2022-01-31 19:25:48,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:25:48,629 INFO L470 AbstractCegarLoop]: Abstraction has 313 states and 317 transitions. [2022-01-31 19:25:48,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 144 states, 144 states have (on average 2.076388888888889) internal successors, (299), 143 states have internal predecessors, (299), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:25:48,629 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 317 transitions. [2022-01-31 19:25:48,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2022-01-31 19:25:48,630 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:25:48,630 INFO L514 BasicCegarLoop]: trace histogram [141, 141, 6, 6, 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] [2022-01-31 19:25:48,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2022-01-31 19:25:48,630 INFO L402 AbstractCegarLoop]: === Iteration 146 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:25:48,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:25:48,630 INFO L85 PathProgramCache]: Analyzing trace with hash 1618094306, now seen corresponding path program 141 times [2022-01-31 19:25:48,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:25:48,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [327141661] [2022-01-31 19:25:48,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:25:48,632 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:25:48,632 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:25:48,632 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:25:48,643 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:25:48,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:25:52,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:25:52,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:25:52,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2022-01-31 19:25:52,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:25:52,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-01-31 19:25:52,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:25:52,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-01-31 19:25:52,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:25:52,567 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:25:52,567 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:25:52,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [327141661] [2022-01-31 19:25:52,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [327141661] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:25:52,567 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:25:52,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [145] imperfect sequences [] total 145 [2022-01-31 19:25:52,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200254962] [2022-01-31 19:25:52,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:25:52,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 145 states [2022-01-31 19:25:52,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:25:52,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 145 interpolants. [2022-01-31 19:25:52,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10298, Invalid=10582, Unknown=0, NotChecked=0, Total=20880 [2022-01-31 19:25:52,572 INFO L87 Difference]: Start difference. First operand 313 states and 317 transitions. Second operand has 145 states, 145 states have (on average 2.075862068965517) internal successors, (301), 144 states have internal predecessors, (301), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:25:57,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:25:57,538 INFO L93 Difference]: Finished difference Result 340 states and 348 transitions. [2022-01-31 19:25:57,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 145 states. [2022-01-31 19:25:57,538 INFO L78 Accepts]: Start accepts. Automaton has has 145 states, 145 states have (on average 2.075862068965517) internal successors, (301), 144 states have internal predecessors, (301), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 330 [2022-01-31 19:25:57,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:25:57,539 INFO L225 Difference]: With dead ends: 340 [2022-01-31 19:25:57,539 INFO L226 Difference]: Without dead ends: 316 [2022-01-31 19:25:57,544 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 285 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10152 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=30888, Invalid=51194, Unknown=0, NotChecked=0, Total=82082 [2022-01-31 19:25:57,544 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 303 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:25:57,544 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [306 Valid, 52 Invalid, 547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 400 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:25:57,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2022-01-31 19:25:57,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 315. [2022-01-31 19:25:57,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 307 states have (on average 1.009771986970684) internal successors, (310), 307 states have internal predecessors, (310), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:25:57,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 319 transitions. [2022-01-31 19:25:57,684 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 319 transitions. Word has length 330 [2022-01-31 19:25:57,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:25:57,685 INFO L470 AbstractCegarLoop]: Abstraction has 315 states and 319 transitions. [2022-01-31 19:25:57,685 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 145 states, 145 states have (on average 2.075862068965517) internal successors, (301), 144 states have internal predecessors, (301), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:25:57,685 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 319 transitions. [2022-01-31 19:25:57,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2022-01-31 19:25:57,686 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:25:57,686 INFO L514 BasicCegarLoop]: trace histogram [142, 142, 6, 6, 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] [2022-01-31 19:25:57,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2022-01-31 19:25:57,686 INFO L402 AbstractCegarLoop]: === Iteration 147 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:25:57,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:25:57,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1126235076, now seen corresponding path program 142 times [2022-01-31 19:25:57,686 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:25:57,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [59393185] [2022-01-31 19:25:57,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:25:57,688 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:25:57,688 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:25:57,688 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:25:57,713 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:25:57,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:26:02,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:26:02,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:26:02,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2022-01-31 19:26:02,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:26:02,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-01-31 19:26:02,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:26:02,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-01-31 19:26:02,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:26:02,317 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:26:02,317 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:26:02,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [59393185] [2022-01-31 19:26:02,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [59393185] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:26:02,317 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:26:02,317 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [146] imperfect sequences [] total 146 [2022-01-31 19:26:02,317 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164254200] [2022-01-31 19:26:02,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:26:02,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 146 states [2022-01-31 19:26:02,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:26:02,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 146 interpolants. [2022-01-31 19:26:02,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10442, Invalid=10728, Unknown=0, NotChecked=0, Total=21170 [2022-01-31 19:26:02,321 INFO L87 Difference]: Start difference. First operand 315 states and 319 transitions. Second operand has 146 states, 146 states have (on average 2.0753424657534247) internal successors, (303), 145 states have internal predecessors, (303), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:26:07,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:26:07,770 INFO L93 Difference]: Finished difference Result 342 states and 350 transitions. [2022-01-31 19:26:07,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2022-01-31 19:26:07,770 INFO L78 Accepts]: Start accepts. Automaton has has 146 states, 146 states have (on average 2.0753424657534247) internal successors, (303), 145 states have internal predecessors, (303), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 332 [2022-01-31 19:26:07,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:26:07,783 INFO L225 Difference]: With dead ends: 342 [2022-01-31 19:26:07,783 INFO L226 Difference]: Without dead ends: 318 [2022-01-31 19:26:07,787 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 287 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10295 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=31320, Invalid=51912, Unknown=0, NotChecked=0, Total=83232 [2022-01-31 19:26:07,787 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 305 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:26:07,787 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [308 Valid, 47 Invalid, 536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 380 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:26:07,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2022-01-31 19:26:07,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 317. [2022-01-31 19:26:07,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 309 states have (on average 1.0097087378640777) internal successors, (312), 309 states have internal predecessors, (312), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:26:07,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 321 transitions. [2022-01-31 19:26:07,925 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 321 transitions. Word has length 332 [2022-01-31 19:26:07,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:26:07,926 INFO L470 AbstractCegarLoop]: Abstraction has 317 states and 321 transitions. [2022-01-31 19:26:07,926 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 146 states, 146 states have (on average 2.0753424657534247) internal successors, (303), 145 states have internal predecessors, (303), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:26:07,926 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 321 transitions. [2022-01-31 19:26:07,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2022-01-31 19:26:07,927 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:26:07,927 INFO L514 BasicCegarLoop]: trace histogram [143, 143, 6, 6, 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] [2022-01-31 19:26:07,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2022-01-31 19:26:07,927 INFO L402 AbstractCegarLoop]: === Iteration 148 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:26:07,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:26:07,928 INFO L85 PathProgramCache]: Analyzing trace with hash 895917606, now seen corresponding path program 143 times [2022-01-31 19:26:07,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:26:07,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2066973921] [2022-01-31 19:26:07,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:26:07,929 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:26:07,929 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:26:07,929 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:26:07,941 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:26:08,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:26:11,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:26:11,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:26:11,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-01-31 19:26:11,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:26:11,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-01-31 19:26:11,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:26:11,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2022-01-31 19:26:11,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:26:11,890 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:26:11,890 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:26:11,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2066973921] [2022-01-31 19:26:11,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2066973921] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:26:11,890 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:26:11,891 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [147] imperfect sequences [] total 147 [2022-01-31 19:26:11,891 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055177892] [2022-01-31 19:26:11,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:26:11,891 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 147 states [2022-01-31 19:26:11,891 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:26:11,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 147 interpolants. [2022-01-31 19:26:11,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10587, Invalid=10875, Unknown=0, NotChecked=0, Total=21462 [2022-01-31 19:26:11,894 INFO L87 Difference]: Start difference. First operand 317 states and 321 transitions. Second operand has 147 states, 147 states have (on average 2.074829931972789) internal successors, (305), 146 states have internal predecessors, (305), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:26:17,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:26:17,148 INFO L93 Difference]: Finished difference Result 344 states and 352 transitions. [2022-01-31 19:26:17,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 147 states. [2022-01-31 19:26:17,149 INFO L78 Accepts]: Start accepts. Automaton has has 147 states, 147 states have (on average 2.074829931972789) internal successors, (305), 146 states have internal predecessors, (305), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 334 [2022-01-31 19:26:17,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:26:17,149 INFO L225 Difference]: With dead ends: 344 [2022-01-31 19:26:17,149 INFO L226 Difference]: Without dead ends: 320 [2022-01-31 19:26:17,153 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 289 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10439 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=31755, Invalid=52635, Unknown=0, NotChecked=0, Total=84390 [2022-01-31 19:26:17,153 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 307 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:26:17,153 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [310 Valid, 52 Invalid, 558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 404 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:26:17,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2022-01-31 19:26:17,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 319. [2022-01-31 19:26:17,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 311 states have (on average 1.0096463022508038) internal successors, (314), 311 states have internal predecessors, (314), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:26:17,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 323 transitions. [2022-01-31 19:26:17,281 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 323 transitions. Word has length 334 [2022-01-31 19:26:17,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:26:17,281 INFO L470 AbstractCegarLoop]: Abstraction has 319 states and 323 transitions. [2022-01-31 19:26:17,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 147 states, 147 states have (on average 2.074829931972789) internal successors, (305), 146 states have internal predecessors, (305), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:26:17,282 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 323 transitions. [2022-01-31 19:26:17,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2022-01-31 19:26:17,283 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:26:17,283 INFO L514 BasicCegarLoop]: trace histogram [144, 144, 6, 6, 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] [2022-01-31 19:26:17,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2022-01-31 19:26:17,283 INFO L402 AbstractCegarLoop]: === Iteration 149 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:26:17,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:26:17,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1395838968, now seen corresponding path program 144 times [2022-01-31 19:26:17,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:26:17,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1067723795] [2022-01-31 19:26:17,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:26:17,284 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:26:17,284 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:26:17,285 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:26:17,303 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:26:17,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:26:22,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:26:22,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:26:22,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-01-31 19:26:22,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:26:22,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-01-31 19:26:22,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:26:22,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2022-01-31 19:26:22,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:26:22,934 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:26:22,934 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:26:22,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1067723795] [2022-01-31 19:26:22,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1067723795] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:26:22,935 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:26:22,935 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [148] imperfect sequences [] total 148 [2022-01-31 19:26:22,935 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481875704] [2022-01-31 19:26:22,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:26:22,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 148 states [2022-01-31 19:26:22,935 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:26:22,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 148 interpolants. [2022-01-31 19:26:22,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10733, Invalid=11023, Unknown=0, NotChecked=0, Total=21756 [2022-01-31 19:26:22,937 INFO L87 Difference]: Start difference. First operand 319 states and 323 transitions. Second operand has 148 states, 148 states have (on average 2.074324324324324) internal successors, (307), 147 states have internal predecessors, (307), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:26:28,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:26:28,598 INFO L93 Difference]: Finished difference Result 346 states and 354 transitions. [2022-01-31 19:26:28,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2022-01-31 19:26:28,599 INFO L78 Accepts]: Start accepts. Automaton has has 148 states, 148 states have (on average 2.074324324324324) internal successors, (307), 147 states have internal predecessors, (307), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 336 [2022-01-31 19:26:28,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:26:28,599 INFO L225 Difference]: With dead ends: 346 [2022-01-31 19:26:28,599 INFO L226 Difference]: Without dead ends: 322 [2022-01-31 19:26:28,603 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 291 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10584 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=32193, Invalid=53363, Unknown=0, NotChecked=0, Total=85556 [2022-01-31 19:26:28,603 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 309 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:26:28,603 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [312 Valid, 62 Invalid, 608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 450 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:26:28,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2022-01-31 19:26:28,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 321. [2022-01-31 19:26:28,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 313 states have (on average 1.0095846645367412) internal successors, (316), 313 states have internal predecessors, (316), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:26:28,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 325 transitions. [2022-01-31 19:26:28,732 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 325 transitions. Word has length 336 [2022-01-31 19:26:28,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:26:28,732 INFO L470 AbstractCegarLoop]: Abstraction has 321 states and 325 transitions. [2022-01-31 19:26:28,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 148 states, 148 states have (on average 2.074324324324324) internal successors, (307), 147 states have internal predecessors, (307), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:26:28,732 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 325 transitions. [2022-01-31 19:26:28,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2022-01-31 19:26:28,733 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:26:28,733 INFO L514 BasicCegarLoop]: trace histogram [145, 145, 6, 6, 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] [2022-01-31 19:26:28,734 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2022-01-31 19:26:28,734 INFO L402 AbstractCegarLoop]: === Iteration 150 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:26:28,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:26:28,734 INFO L85 PathProgramCache]: Analyzing trace with hash -455683734, now seen corresponding path program 145 times [2022-01-31 19:26:28,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:26:28,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1101480409] [2022-01-31 19:26:28,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:26:28,735 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:26:28,735 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:26:28,735 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:26:28,747 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:26:28,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:26:33,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:26:33,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:26:33,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2022-01-31 19:26:33,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:26:33,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-01-31 19:26:33,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:26:33,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-01-31 19:26:33,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:26:33,469 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:26:33,469 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:26:33,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1101480409] [2022-01-31 19:26:33,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1101480409] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:26:33,469 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:26:33,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [149] imperfect sequences [] total 149 [2022-01-31 19:26:33,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771457278] [2022-01-31 19:26:33,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:26:33,470 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 149 states [2022-01-31 19:26:33,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:26:33,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 149 interpolants. [2022-01-31 19:26:33,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10880, Invalid=11172, Unknown=0, NotChecked=0, Total=22052 [2022-01-31 19:26:33,474 INFO L87 Difference]: Start difference. First operand 321 states and 325 transitions. Second operand has 149 states, 149 states have (on average 2.0738255033557045) internal successors, (309), 148 states have internal predecessors, (309), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:26:38,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:26:38,953 INFO L93 Difference]: Finished difference Result 348 states and 356 transitions. [2022-01-31 19:26:38,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 149 states. [2022-01-31 19:26:38,953 INFO L78 Accepts]: Start accepts. Automaton has has 149 states, 149 states have (on average 2.0738255033557045) internal successors, (309), 148 states have internal predecessors, (309), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 338 [2022-01-31 19:26:38,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:26:38,954 INFO L225 Difference]: With dead ends: 348 [2022-01-31 19:26:38,954 INFO L226 Difference]: Without dead ends: 324 [2022-01-31 19:26:38,958 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 293 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10730 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=32634, Invalid=54096, Unknown=0, NotChecked=0, Total=86730 [2022-01-31 19:26:38,958 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 311 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:26:38,958 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [314 Valid, 52 Invalid, 561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:26:38,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2022-01-31 19:26:39,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 323. [2022-01-31 19:26:39,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 315 states have (on average 1.0095238095238095) internal successors, (318), 315 states have internal predecessors, (318), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:26:39,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 327 transitions. [2022-01-31 19:26:39,090 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 327 transitions. Word has length 338 [2022-01-31 19:26:39,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:26:39,090 INFO L470 AbstractCegarLoop]: Abstraction has 323 states and 327 transitions. [2022-01-31 19:26:39,090 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 149 states, 149 states have (on average 2.0738255033557045) internal successors, (309), 148 states have internal predecessors, (309), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:26:39,090 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 327 transitions. [2022-01-31 19:26:39,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2022-01-31 19:26:39,091 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:26:39,091 INFO L514 BasicCegarLoop]: trace histogram [146, 146, 6, 6, 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] [2022-01-31 19:26:39,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2022-01-31 19:26:39,091 INFO L402 AbstractCegarLoop]: === Iteration 151 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:26:39,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:26:39,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1090363980, now seen corresponding path program 146 times [2022-01-31 19:26:39,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:26:39,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [907389463] [2022-01-31 19:26:39,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:26:39,108 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:26:39,108 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:26:39,108 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:26:39,134 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:26:39,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:26:43,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:26:43,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:26:43,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2022-01-31 19:26:43,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:26:43,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-01-31 19:26:43,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:26:43,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-01-31 19:26:43,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:26:43,291 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:26:43,291 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:26:43,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [907389463] [2022-01-31 19:26:43,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [907389463] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:26:43,292 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:26:43,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [150] imperfect sequences [] total 150 [2022-01-31 19:26:43,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84916476] [2022-01-31 19:26:43,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:26:43,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 150 states [2022-01-31 19:26:43,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:26:43,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 150 interpolants. [2022-01-31 19:26:43,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11028, Invalid=11322, Unknown=0, NotChecked=0, Total=22350 [2022-01-31 19:26:43,296 INFO L87 Difference]: Start difference. First operand 323 states and 327 transitions. Second operand has 150 states, 150 states have (on average 2.0733333333333333) internal successors, (311), 149 states have internal predecessors, (311), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:26:49,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:26:49,240 INFO L93 Difference]: Finished difference Result 350 states and 358 transitions. [2022-01-31 19:26:49,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 150 states. [2022-01-31 19:26:49,240 INFO L78 Accepts]: Start accepts. Automaton has has 150 states, 150 states have (on average 2.0733333333333333) internal successors, (311), 149 states have internal predecessors, (311), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 340 [2022-01-31 19:26:49,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:26:49,241 INFO L225 Difference]: With dead ends: 350 [2022-01-31 19:26:49,241 INFO L226 Difference]: Without dead ends: 326 [2022-01-31 19:26:49,246 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 295 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10877 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=33078, Invalid=54834, Unknown=0, NotChecked=0, Total=87912 [2022-01-31 19:26:49,246 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 313 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 366 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:26:49,246 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [316 Valid, 42 Invalid, 524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 366 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:26:49,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2022-01-31 19:26:49,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 325. [2022-01-31 19:26:49,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 317 states have (on average 1.0094637223974763) internal successors, (320), 317 states have internal predecessors, (320), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:26:49,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 329 transitions. [2022-01-31 19:26:49,401 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 329 transitions. Word has length 340 [2022-01-31 19:26:49,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:26:49,401 INFO L470 AbstractCegarLoop]: Abstraction has 325 states and 329 transitions. [2022-01-31 19:26:49,402 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 150 states, 150 states have (on average 2.0733333333333333) internal successors, (311), 149 states have internal predecessors, (311), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:26:49,402 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 329 transitions. [2022-01-31 19:26:49,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2022-01-31 19:26:49,403 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:26:49,403 INFO L514 BasicCegarLoop]: trace histogram [147, 147, 6, 6, 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] [2022-01-31 19:26:49,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2022-01-31 19:26:49,403 INFO L402 AbstractCegarLoop]: === Iteration 152 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:26:49,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:26:49,403 INFO L85 PathProgramCache]: Analyzing trace with hash 783532718, now seen corresponding path program 147 times [2022-01-31 19:26:49,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:26:49,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1311466394] [2022-01-31 19:26:49,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:26:49,404 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:26:49,404 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:26:49,404 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:26:49,416 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:26:49,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:26:54,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:26:54,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:26:54,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-01-31 19:26:54,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:26:54,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-01-31 19:26:54,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:26:54,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2022-01-31 19:26:54,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:26:54,018 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:26:54,018 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:26:54,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1311466394] [2022-01-31 19:26:54,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1311466394] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:26:54,019 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:26:54,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [151] imperfect sequences [] total 151 [2022-01-31 19:26:54,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655742379] [2022-01-31 19:26:54,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:26:54,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 151 states [2022-01-31 19:26:54,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:26:54,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 151 interpolants. [2022-01-31 19:26:54,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11177, Invalid=11473, Unknown=0, NotChecked=0, Total=22650 [2022-01-31 19:26:54,023 INFO L87 Difference]: Start difference. First operand 325 states and 329 transitions. Second operand has 151 states, 151 states have (on average 2.0728476821192054) internal successors, (313), 150 states have internal predecessors, (313), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:26:59,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:26:59,342 INFO L93 Difference]: Finished difference Result 352 states and 360 transitions. [2022-01-31 19:26:59,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 151 states. [2022-01-31 19:26:59,342 INFO L78 Accepts]: Start accepts. Automaton has has 151 states, 151 states have (on average 2.0728476821192054) internal successors, (313), 150 states have internal predecessors, (313), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 342 [2022-01-31 19:26:59,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:26:59,343 INFO L225 Difference]: With dead ends: 352 [2022-01-31 19:26:59,343 INFO L226 Difference]: Without dead ends: 328 [2022-01-31 19:26:59,347 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 297 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11025 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=33525, Invalid=55577, Unknown=0, NotChecked=0, Total=89102 [2022-01-31 19:26:59,348 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 315 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:26:59,348 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [318 Valid, 62 Invalid, 611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 456 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:26:59,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2022-01-31 19:26:59,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 327. [2022-01-31 19:26:59,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 319 states have (on average 1.0094043887147335) internal successors, (322), 319 states have internal predecessors, (322), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:26:59,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 331 transitions. [2022-01-31 19:26:59,506 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 331 transitions. Word has length 342 [2022-01-31 19:26:59,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:26:59,506 INFO L470 AbstractCegarLoop]: Abstraction has 327 states and 331 transitions. [2022-01-31 19:26:59,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 151 states, 151 states have (on average 2.0728476821192054) internal successors, (313), 150 states have internal predecessors, (313), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:26:59,507 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 331 transitions. [2022-01-31 19:26:59,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2022-01-31 19:26:59,508 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:26:59,508 INFO L514 BasicCegarLoop]: trace histogram [148, 148, 6, 6, 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] [2022-01-31 19:26:59,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2022-01-31 19:26:59,508 INFO L402 AbstractCegarLoop]: === Iteration 153 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:26:59,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:26:59,509 INFO L85 PathProgramCache]: Analyzing trace with hash -2023533936, now seen corresponding path program 148 times [2022-01-31 19:26:59,510 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:26:59,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1307901269] [2022-01-31 19:26:59,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:26:59,511 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:26:59,511 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:26:59,511 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:26:59,522 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:26:59,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:27:05,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:27:05,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:27:05,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-01-31 19:27:05,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:27:05,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-01-31 19:27:05,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:27:05,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2022-01-31 19:27:05,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:27:05,190 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:27:05,190 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:27:05,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1307901269] [2022-01-31 19:27:05,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1307901269] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:27:05,190 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:27:05,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [152] imperfect sequences [] total 152 [2022-01-31 19:27:05,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543543084] [2022-01-31 19:27:05,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:27:05,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 152 states [2022-01-31 19:27:05,191 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:27:05,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 152 interpolants. [2022-01-31 19:27:05,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11327, Invalid=11625, Unknown=0, NotChecked=0, Total=22952 [2022-01-31 19:27:05,195 INFO L87 Difference]: Start difference. First operand 327 states and 331 transitions. Second operand has 152 states, 152 states have (on average 2.0723684210526314) internal successors, (315), 151 states have internal predecessors, (315), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:27:11,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:27:11,780 INFO L93 Difference]: Finished difference Result 354 states and 362 transitions. [2022-01-31 19:27:11,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 152 states. [2022-01-31 19:27:11,780 INFO L78 Accepts]: Start accepts. Automaton has has 152 states, 152 states have (on average 2.0723684210526314) internal successors, (315), 151 states have internal predecessors, (315), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 344 [2022-01-31 19:27:11,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:27:11,781 INFO L225 Difference]: With dead ends: 354 [2022-01-31 19:27:11,781 INFO L226 Difference]: Without dead ends: 330 [2022-01-31 19:27:11,786 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 299 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11174 ImplicationChecksByTransitivity, 11.4s TimeCoverageRelationStatistics Valid=33975, Invalid=56325, Unknown=0, NotChecked=0, Total=90300 [2022-01-31 19:27:11,788 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 317 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 480 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 636 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:27:11,788 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [320 Valid, 67 Invalid, 636 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 480 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:27:11,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2022-01-31 19:27:11,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 329. [2022-01-31 19:27:11,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 321 states have (on average 1.0093457943925233) internal successors, (324), 321 states have internal predecessors, (324), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:27:11,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 333 transitions. [2022-01-31 19:27:11,952 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 333 transitions. Word has length 344 [2022-01-31 19:27:11,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:27:11,952 INFO L470 AbstractCegarLoop]: Abstraction has 329 states and 333 transitions. [2022-01-31 19:27:11,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 152 states, 152 states have (on average 2.0723684210526314) internal successors, (315), 151 states have internal predecessors, (315), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:27:11,952 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 333 transitions. [2022-01-31 19:27:11,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2022-01-31 19:27:11,954 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:27:11,954 INFO L514 BasicCegarLoop]: trace histogram [149, 149, 6, 6, 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] [2022-01-31 19:27:11,954 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2022-01-31 19:27:11,954 INFO L402 AbstractCegarLoop]: === Iteration 154 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:27:11,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:27:11,954 INFO L85 PathProgramCache]: Analyzing trace with hash 1919840754, now seen corresponding path program 149 times [2022-01-31 19:27:11,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:27:11,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [891627482] [2022-01-31 19:27:11,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:27:11,955 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:27:11,955 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:27:11,955 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:27:11,967 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:27:12,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:27:16,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:27:16,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:27:16,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2022-01-31 19:27:16,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:27:16,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-01-31 19:27:16,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:27:16,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-01-31 19:27:16,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:27:16,328 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:27:16,328 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:27:16,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [891627482] [2022-01-31 19:27:16,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [891627482] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:27:16,328 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:27:16,329 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [153] imperfect sequences [] total 153 [2022-01-31 19:27:16,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655413224] [2022-01-31 19:27:16,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:27:16,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 153 states [2022-01-31 19:27:16,329 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:27:16,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 153 interpolants. [2022-01-31 19:27:16,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11478, Invalid=11778, Unknown=0, NotChecked=0, Total=23256 [2022-01-31 19:27:16,333 INFO L87 Difference]: Start difference. First operand 329 states and 333 transitions. Second operand has 153 states, 153 states have (on average 2.0718954248366015) internal successors, (317), 152 states have internal predecessors, (317), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:27:22,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:27:22,155 INFO L93 Difference]: Finished difference Result 356 states and 364 transitions. [2022-01-31 19:27:22,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2022-01-31 19:27:22,156 INFO L78 Accepts]: Start accepts. Automaton has has 153 states, 153 states have (on average 2.0718954248366015) internal successors, (317), 152 states have internal predecessors, (317), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 346 [2022-01-31 19:27:22,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:27:22,157 INFO L225 Difference]: With dead ends: 356 [2022-01-31 19:27:22,157 INFO L226 Difference]: Without dead ends: 332 [2022-01-31 19:27:22,162 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 301 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11324 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=34428, Invalid=57078, Unknown=0, NotChecked=0, Total=91506 [2022-01-31 19:27:22,162 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 319 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:27:22,162 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [322 Valid, 62 Invalid, 619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 460 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:27:22,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2022-01-31 19:27:22,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 331. [2022-01-31 19:27:22,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 323 states have (on average 1.0092879256965945) internal successors, (326), 323 states have internal predecessors, (326), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:27:22,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 335 transitions. [2022-01-31 19:27:22,317 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 335 transitions. Word has length 346 [2022-01-31 19:27:22,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:27:22,317 INFO L470 AbstractCegarLoop]: Abstraction has 331 states and 335 transitions. [2022-01-31 19:27:22,318 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 153 states, 153 states have (on average 2.0718954248366015) internal successors, (317), 152 states have internal predecessors, (317), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:27:22,318 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 335 transitions. [2022-01-31 19:27:22,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2022-01-31 19:27:22,319 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:27:22,319 INFO L514 BasicCegarLoop]: trace histogram [150, 150, 6, 6, 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] [2022-01-31 19:27:22,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2022-01-31 19:27:22,319 INFO L402 AbstractCegarLoop]: === Iteration 155 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:27:22,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:27:22,319 INFO L85 PathProgramCache]: Analyzing trace with hash -953204524, now seen corresponding path program 150 times [2022-01-31 19:27:22,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:27:22,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1349848291] [2022-01-31 19:27:22,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:27:22,320 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:27:22,320 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:27:22,321 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:27:22,336 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:27:22,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:27:27,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:27:27,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:27:27,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2022-01-31 19:27:27,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:27:27,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-01-31 19:27:27,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:27:27,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-01-31 19:27:27,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:27:27,416 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:27:27,416 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:27:27,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1349848291] [2022-01-31 19:27:27,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1349848291] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:27:27,416 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:27:27,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [154] imperfect sequences [] total 154 [2022-01-31 19:27:27,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050249894] [2022-01-31 19:27:27,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:27:27,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 154 states [2022-01-31 19:27:27,417 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:27:27,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 154 interpolants. [2022-01-31 19:27:27,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11630, Invalid=11932, Unknown=0, NotChecked=0, Total=23562 [2022-01-31 19:27:27,421 INFO L87 Difference]: Start difference. First operand 331 states and 335 transitions. Second operand has 154 states, 154 states have (on average 2.0714285714285716) internal successors, (319), 153 states have internal predecessors, (319), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:27:33,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:27:33,807 INFO L93 Difference]: Finished difference Result 358 states and 366 transitions. [2022-01-31 19:27:33,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 154 states. [2022-01-31 19:27:33,807 INFO L78 Accepts]: Start accepts. Automaton has has 154 states, 154 states have (on average 2.0714285714285716) internal successors, (319), 153 states have internal predecessors, (319), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 348 [2022-01-31 19:27:33,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:27:33,808 INFO L225 Difference]: With dead ends: 358 [2022-01-31 19:27:33,808 INFO L226 Difference]: Without dead ends: 334 [2022-01-31 19:27:33,811 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 303 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11475 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=34884, Invalid=57836, Unknown=0, NotChecked=0, Total=92720 [2022-01-31 19:27:33,812 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 321 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 19:27:33,812 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [324 Valid, 62 Invalid, 623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 462 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 19:27:33,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2022-01-31 19:27:33,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 333. [2022-01-31 19:27:33,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 325 states have (on average 1.0092307692307692) internal successors, (328), 325 states have internal predecessors, (328), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:27:33,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 337 transitions. [2022-01-31 19:27:33,951 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 337 transitions. Word has length 348 [2022-01-31 19:27:33,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:27:33,951 INFO L470 AbstractCegarLoop]: Abstraction has 333 states and 337 transitions. [2022-01-31 19:27:33,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 154 states, 154 states have (on average 2.0714285714285716) internal successors, (319), 153 states have internal predecessors, (319), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:27:33,952 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 337 transitions. [2022-01-31 19:27:33,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2022-01-31 19:27:33,953 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:27:33,953 INFO L514 BasicCegarLoop]: trace histogram [151, 151, 6, 6, 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] [2022-01-31 19:27:33,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2022-01-31 19:27:33,953 INFO L402 AbstractCegarLoop]: === Iteration 156 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:27:33,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:27:33,953 INFO L85 PathProgramCache]: Analyzing trace with hash -285745354, now seen corresponding path program 151 times [2022-01-31 19:27:33,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:27:33,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1550473610] [2022-01-31 19:27:33,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:27:33,979 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:27:33,980 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:27:33,980 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:27:33,991 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:27:34,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:27:38,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:27:38,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:27:38,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-01-31 19:27:38,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:27:38,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2022-01-31 19:27:38,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:27:38,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2022-01-31 19:27:38,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:27:38,903 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:27:38,904 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:27:38,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1550473610] [2022-01-31 19:27:38,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1550473610] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:27:38,904 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:27:38,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [155] imperfect sequences [] total 155 [2022-01-31 19:27:38,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207639626] [2022-01-31 19:27:38,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:27:38,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 155 states [2022-01-31 19:27:38,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:27:38,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 155 interpolants. [2022-01-31 19:27:38,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11783, Invalid=12087, Unknown=0, NotChecked=0, Total=23870 [2022-01-31 19:27:38,909 INFO L87 Difference]: Start difference. First operand 333 states and 337 transitions. Second operand has 155 states, 155 states have (on average 2.0709677419354837) internal successors, (321), 154 states have internal predecessors, (321), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:27:46,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:27:46,078 INFO L93 Difference]: Finished difference Result 360 states and 368 transitions. [2022-01-31 19:27:46,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 155 states. [2022-01-31 19:27:46,078 INFO L78 Accepts]: Start accepts. Automaton has has 155 states, 155 states have (on average 2.0709677419354837) internal successors, (321), 154 states have internal predecessors, (321), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 350 [2022-01-31 19:27:46,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:27:46,079 INFO L225 Difference]: With dead ends: 360 [2022-01-31 19:27:46,079 INFO L226 Difference]: Without dead ends: 336 [2022-01-31 19:27:46,083 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 305 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11627 ImplicationChecksByTransitivity, 11.2s TimeCoverageRelationStatistics Valid=35343, Invalid=58599, Unknown=0, NotChecked=0, Total=93942 [2022-01-31 19:27:46,083 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 323 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 464 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 326 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 19:27:46,083 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [326 Valid, 62 Invalid, 625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 464 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 19:27:46,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2022-01-31 19:27:46,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 335. [2022-01-31 19:27:46,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 327 states have (on average 1.0091743119266054) internal successors, (330), 327 states have internal predecessors, (330), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:27:46,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 339 transitions. [2022-01-31 19:27:46,221 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 339 transitions. Word has length 350 [2022-01-31 19:27:46,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:27:46,221 INFO L470 AbstractCegarLoop]: Abstraction has 335 states and 339 transitions. [2022-01-31 19:27:46,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 155 states, 155 states have (on average 2.0709677419354837) internal successors, (321), 154 states have internal predecessors, (321), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:27:46,222 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 339 transitions. [2022-01-31 19:27:46,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2022-01-31 19:27:46,223 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:27:46,223 INFO L514 BasicCegarLoop]: trace histogram [152, 152, 6, 6, 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] [2022-01-31 19:27:46,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2022-01-31 19:27:46,223 INFO L402 AbstractCegarLoop]: === Iteration 157 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:27:46,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:27:46,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1192389912, now seen corresponding path program 152 times [2022-01-31 19:27:46,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:27:46,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [628067619] [2022-01-31 19:27:46,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:27:46,224 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:27:46,224 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:27:46,225 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:27:46,237 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:27:46,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:27:50,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:27:50,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:27:50,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-01-31 19:27:50,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:27:50,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-01-31 19:27:50,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:27:50,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2022-01-31 19:27:50,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:27:50,740 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:27:50,740 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:27:50,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [628067619] [2022-01-31 19:27:50,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [628067619] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:27:50,741 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:27:50,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [156] imperfect sequences [] total 156 [2022-01-31 19:27:50,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074284844] [2022-01-31 19:27:50,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:27:50,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 156 states [2022-01-31 19:27:50,741 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:27:50,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 156 interpolants. [2022-01-31 19:27:50,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11937, Invalid=12243, Unknown=0, NotChecked=0, Total=24180 [2022-01-31 19:27:50,744 INFO L87 Difference]: Start difference. First operand 335 states and 339 transitions. Second operand has 156 states, 156 states have (on average 2.0705128205128207) internal successors, (323), 155 states have internal predecessors, (323), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:27:57,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:27:57,152 INFO L93 Difference]: Finished difference Result 362 states and 370 transitions. [2022-01-31 19:27:57,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2022-01-31 19:27:57,153 INFO L78 Accepts]: Start accepts. Automaton has has 156 states, 156 states have (on average 2.0705128205128207) internal successors, (323), 155 states have internal predecessors, (323), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 352 [2022-01-31 19:27:57,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:27:57,153 INFO L225 Difference]: With dead ends: 362 [2022-01-31 19:27:57,153 INFO L226 Difference]: Without dead ends: 338 [2022-01-31 19:27:57,158 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 307 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11780 ImplicationChecksByTransitivity, 10.1s TimeCoverageRelationStatistics Valid=35805, Invalid=59367, Unknown=0, NotChecked=0, Total=95172 [2022-01-31 19:27:57,158 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 325 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:27:57,158 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [328 Valid, 42 Invalid, 544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 378 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:27:57,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2022-01-31 19:27:57,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 337. [2022-01-31 19:27:57,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 329 states have (on average 1.0091185410334347) internal successors, (332), 329 states have internal predecessors, (332), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:27:57,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 341 transitions. [2022-01-31 19:27:57,436 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 341 transitions. Word has length 352 [2022-01-31 19:27:57,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:27:57,436 INFO L470 AbstractCegarLoop]: Abstraction has 337 states and 341 transitions. [2022-01-31 19:27:57,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 156 states, 156 states have (on average 2.0705128205128207) internal successors, (323), 155 states have internal predecessors, (323), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:27:57,437 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 341 transitions. [2022-01-31 19:27:57,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2022-01-31 19:27:57,438 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:27:57,438 INFO L514 BasicCegarLoop]: trace histogram [153, 153, 6, 6, 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] [2022-01-31 19:27:57,438 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2022-01-31 19:27:57,438 INFO L402 AbstractCegarLoop]: === Iteration 158 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:27:57,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:27:57,438 INFO L85 PathProgramCache]: Analyzing trace with hash 46205562, now seen corresponding path program 153 times [2022-01-31 19:27:57,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:27:57,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1068669302] [2022-01-31 19:27:57,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:27:57,439 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:27:57,440 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:27:57,440 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:27:57,452 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:27:57,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:28:03,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:28:03,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:28:03,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2022-01-31 19:28:03,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:28:03,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2022-01-31 19:28:03,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:28:03,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-01-31 19:28:03,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:28:03,349 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:28:03,349 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:28:03,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1068669302] [2022-01-31 19:28:03,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1068669302] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:28:03,349 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:28:03,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [157] imperfect sequences [] total 157 [2022-01-31 19:28:03,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675621107] [2022-01-31 19:28:03,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:28:03,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 157 states [2022-01-31 19:28:03,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:28:03,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 157 interpolants. [2022-01-31 19:28:03,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12092, Invalid=12400, Unknown=0, NotChecked=0, Total=24492 [2022-01-31 19:28:03,353 INFO L87 Difference]: Start difference. First operand 337 states and 341 transitions. Second operand has 157 states, 157 states have (on average 2.070063694267516) internal successors, (325), 156 states have internal predecessors, (325), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:28:09,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:28:09,019 INFO L93 Difference]: Finished difference Result 364 states and 372 transitions. [2022-01-31 19:28:09,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 157 states. [2022-01-31 19:28:09,019 INFO L78 Accepts]: Start accepts. Automaton has has 157 states, 157 states have (on average 2.070063694267516) internal successors, (325), 156 states have internal predecessors, (325), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 354 [2022-01-31 19:28:09,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:28:09,020 INFO L225 Difference]: With dead ends: 364 [2022-01-31 19:28:09,020 INFO L226 Difference]: Without dead ends: 340 [2022-01-31 19:28:09,024 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 309 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11934 ImplicationChecksByTransitivity, 10.7s TimeCoverageRelationStatistics Valid=36270, Invalid=60140, Unknown=0, NotChecked=0, Total=96410 [2022-01-31 19:28:09,025 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 327 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 468 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:28:09,025 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [330 Valid, 62 Invalid, 630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 468 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:28:09,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2022-01-31 19:28:09,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 339. [2022-01-31 19:28:09,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 331 states have (on average 1.0090634441087614) internal successors, (334), 331 states have internal predecessors, (334), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:28:09,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 343 transitions. [2022-01-31 19:28:09,184 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 343 transitions. Word has length 354 [2022-01-31 19:28:09,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:28:09,184 INFO L470 AbstractCegarLoop]: Abstraction has 339 states and 343 transitions. [2022-01-31 19:28:09,184 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 157 states, 157 states have (on average 2.070063694267516) internal successors, (325), 156 states have internal predecessors, (325), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:28:09,184 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 343 transitions. [2022-01-31 19:28:09,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2022-01-31 19:28:09,185 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:28:09,185 INFO L514 BasicCegarLoop]: trace histogram [154, 154, 6, 6, 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] [2022-01-31 19:28:09,185 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2022-01-31 19:28:09,185 INFO L402 AbstractCegarLoop]: === Iteration 159 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:28:09,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:28:09,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1925327012, now seen corresponding path program 154 times [2022-01-31 19:28:09,186 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:28:09,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1168724514] [2022-01-31 19:28:09,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:28:09,187 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:28:09,187 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:28:09,187 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:28:09,200 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:28:09,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:28:13,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:28:13,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:28:13,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2022-01-31 19:28:13,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:28:13,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-01-31 19:28:13,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:28:13,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-01-31 19:28:13,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:28:13,790 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:28:13,791 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:28:13,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1168724514] [2022-01-31 19:28:13,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1168724514] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:28:13,791 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:28:13,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [158] imperfect sequences [] total 158 [2022-01-31 19:28:13,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794859961] [2022-01-31 19:28:13,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:28:13,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 158 states [2022-01-31 19:28:13,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:28:13,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 158 interpolants. [2022-01-31 19:28:13,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12248, Invalid=12558, Unknown=0, NotChecked=0, Total=24806 [2022-01-31 19:28:13,795 INFO L87 Difference]: Start difference. First operand 339 states and 343 transitions. Second operand has 158 states, 158 states have (on average 2.069620253164557) internal successors, (327), 157 states have internal predecessors, (327), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:28:20,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:28:20,439 INFO L93 Difference]: Finished difference Result 366 states and 374 transitions. [2022-01-31 19:28:20,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 158 states. [2022-01-31 19:28:20,439 INFO L78 Accepts]: Start accepts. Automaton has has 158 states, 158 states have (on average 2.069620253164557) internal successors, (327), 157 states have internal predecessors, (327), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 356 [2022-01-31 19:28:20,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:28:20,440 INFO L225 Difference]: With dead ends: 366 [2022-01-31 19:28:20,440 INFO L226 Difference]: Without dead ends: 342 [2022-01-31 19:28:20,444 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 311 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12089 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=36738, Invalid=60918, Unknown=0, NotChecked=0, Total=97656 [2022-01-31 19:28:20,447 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 329 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:28:20,447 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [332 Valid, 57 Invalid, 609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:28:20,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2022-01-31 19:28:20,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 341. [2022-01-31 19:28:20,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 333 states have (on average 1.009009009009009) internal successors, (336), 333 states have internal predecessors, (336), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:28:20,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 345 transitions. [2022-01-31 19:28:20,594 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 345 transitions. Word has length 356 [2022-01-31 19:28:20,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:28:20,594 INFO L470 AbstractCegarLoop]: Abstraction has 341 states and 345 transitions. [2022-01-31 19:28:20,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 158 states, 158 states have (on average 2.069620253164557) internal successors, (327), 157 states have internal predecessors, (327), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:28:20,594 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 345 transitions. [2022-01-31 19:28:20,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2022-01-31 19:28:20,595 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:28:20,595 INFO L514 BasicCegarLoop]: trace histogram [155, 155, 6, 6, 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] [2022-01-31 19:28:20,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2022-01-31 19:28:20,596 INFO L402 AbstractCegarLoop]: === Iteration 160 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:28:20,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:28:20,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1807414206, now seen corresponding path program 155 times [2022-01-31 19:28:20,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:28:20,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1488319786] [2022-01-31 19:28:20,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:28:20,598 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:28:20,598 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:28:20,598 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:28:20,612 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:28:20,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:28:27,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:28:27,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:28:27,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-01-31 19:28:27,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:28:27,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2022-01-31 19:28:27,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:28:27,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2022-01-31 19:28:27,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:28:27,300 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:28:27,300 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:28:27,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1488319786] [2022-01-31 19:28:27,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1488319786] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:28:27,300 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:28:27,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [159] imperfect sequences [] total 159 [2022-01-31 19:28:27,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41047483] [2022-01-31 19:28:27,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:28:27,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 159 states [2022-01-31 19:28:27,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:28:27,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 159 interpolants. [2022-01-31 19:28:27,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12405, Invalid=12717, Unknown=0, NotChecked=0, Total=25122 [2022-01-31 19:28:27,303 INFO L87 Difference]: Start difference. First operand 341 states and 345 transitions. Second operand has 159 states, 159 states have (on average 2.069182389937107) internal successors, (329), 158 states have internal predecessors, (329), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:28:35,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:28:35,047 INFO L93 Difference]: Finished difference Result 368 states and 376 transitions. [2022-01-31 19:28:35,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 159 states. [2022-01-31 19:28:35,047 INFO L78 Accepts]: Start accepts. Automaton has has 159 states, 159 states have (on average 2.069182389937107) internal successors, (329), 158 states have internal predecessors, (329), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 358 [2022-01-31 19:28:35,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:28:35,048 INFO L225 Difference]: With dead ends: 368 [2022-01-31 19:28:35,048 INFO L226 Difference]: Without dead ends: 344 [2022-01-31 19:28:35,052 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 313 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12245 ImplicationChecksByTransitivity, 13.5s TimeCoverageRelationStatistics Valid=37209, Invalid=61701, Unknown=0, NotChecked=0, Total=98910 [2022-01-31 19:28:35,052 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 331 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 19:28:35,053 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [334 Valid, 57 Invalid, 615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 450 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 19:28:35,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2022-01-31 19:28:35,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 343. [2022-01-31 19:28:35,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 335 states have (on average 1.008955223880597) internal successors, (338), 335 states have internal predecessors, (338), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:28:35,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 347 transitions. [2022-01-31 19:28:35,200 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 347 transitions. Word has length 358 [2022-01-31 19:28:35,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:28:35,201 INFO L470 AbstractCegarLoop]: Abstraction has 343 states and 347 transitions. [2022-01-31 19:28:35,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 159 states, 159 states have (on average 2.069182389937107) internal successors, (329), 158 states have internal predecessors, (329), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:28:35,201 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 347 transitions. [2022-01-31 19:28:35,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2022-01-31 19:28:35,202 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:28:35,202 INFO L514 BasicCegarLoop]: trace histogram [156, 156, 6, 6, 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] [2022-01-31 19:28:35,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2022-01-31 19:28:35,202 INFO L402 AbstractCegarLoop]: === Iteration 161 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:28:35,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:28:35,202 INFO L85 PathProgramCache]: Analyzing trace with hash -1620934752, now seen corresponding path program 156 times [2022-01-31 19:28:35,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:28:35,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2506104] [2022-01-31 19:28:35,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:28:35,204 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:28:35,204 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:28:35,204 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:28:35,246 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:28:35,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:28:40,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:28:40,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:28:40,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-01-31 19:28:40,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:28:40,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-01-31 19:28:40,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:28:40,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2022-01-31 19:28:40,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:28:40,908 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:28:40,908 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:28:40,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2506104] [2022-01-31 19:28:40,908 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2506104] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:28:40,908 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:28:40,908 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [160] imperfect sequences [] total 160 [2022-01-31 19:28:40,908 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796451573] [2022-01-31 19:28:40,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:28:40,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 160 states [2022-01-31 19:28:40,909 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:28:40,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 160 interpolants. [2022-01-31 19:28:40,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12563, Invalid=12877, Unknown=0, NotChecked=0, Total=25440 [2022-01-31 19:28:40,912 INFO L87 Difference]: Start difference. First operand 343 states and 347 transitions. Second operand has 160 states, 160 states have (on average 2.06875) internal successors, (331), 159 states have internal predecessors, (331), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:28:47,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:28:47,638 INFO L93 Difference]: Finished difference Result 370 states and 378 transitions. [2022-01-31 19:28:47,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 160 states. [2022-01-31 19:28:47,638 INFO L78 Accepts]: Start accepts. Automaton has has 160 states, 160 states have (on average 2.06875) internal successors, (331), 159 states have internal predecessors, (331), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 360 [2022-01-31 19:28:47,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:28:47,639 INFO L225 Difference]: With dead ends: 370 [2022-01-31 19:28:47,639 INFO L226 Difference]: Without dead ends: 346 [2022-01-31 19:28:47,644 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 315 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12402 ImplicationChecksByTransitivity, 11.6s TimeCoverageRelationStatistics Valid=37683, Invalid=62489, Unknown=0, NotChecked=0, Total=100172 [2022-01-31 19:28:47,645 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 333 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 496 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:28:47,645 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [336 Valid, 67 Invalid, 662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 496 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:28:47,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2022-01-31 19:28:47,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 345. [2022-01-31 19:28:47,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 337 states have (on average 1.0089020771513353) internal successors, (340), 337 states have internal predecessors, (340), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:28:47,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 349 transitions. [2022-01-31 19:28:47,811 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 349 transitions. Word has length 360 [2022-01-31 19:28:47,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:28:47,811 INFO L470 AbstractCegarLoop]: Abstraction has 345 states and 349 transitions. [2022-01-31 19:28:47,811 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 160 states, 160 states have (on average 2.06875) internal successors, (331), 159 states have internal predecessors, (331), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:28:47,811 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 349 transitions. [2022-01-31 19:28:47,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2022-01-31 19:28:47,812 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:28:47,812 INFO L514 BasicCegarLoop]: trace histogram [157, 157, 6, 6, 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] [2022-01-31 19:28:47,813 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2022-01-31 19:28:47,813 INFO L402 AbstractCegarLoop]: === Iteration 162 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:28:47,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:28:47,813 INFO L85 PathProgramCache]: Analyzing trace with hash -2024367358, now seen corresponding path program 157 times [2022-01-31 19:28:47,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:28:47,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1951726426] [2022-01-31 19:28:47,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:28:47,814 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:28:47,814 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:28:47,814 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:28:47,827 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:28:47,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:28:54,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:28:54,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:28:54,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2022-01-31 19:28:54,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:28:54,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-01-31 19:28:54,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:28:54,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-01-31 19:28:54,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:28:54,121 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:28:54,122 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:28:54,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1951726426] [2022-01-31 19:28:54,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1951726426] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:28:54,122 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:28:54,122 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [161] imperfect sequences [] total 161 [2022-01-31 19:28:54,122 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473342222] [2022-01-31 19:28:54,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:28:54,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 161 states [2022-01-31 19:28:54,122 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:28:54,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 161 interpolants. [2022-01-31 19:28:54,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12722, Invalid=13038, Unknown=0, NotChecked=0, Total=25760 [2022-01-31 19:28:54,127 INFO L87 Difference]: Start difference. First operand 345 states and 349 transitions. Second operand has 161 states, 161 states have (on average 2.0683229813664594) internal successors, (333), 160 states have internal predecessors, (333), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:29:01,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:29:01,857 INFO L93 Difference]: Finished difference Result 372 states and 380 transitions. [2022-01-31 19:29:01,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 161 states. [2022-01-31 19:29:01,858 INFO L78 Accepts]: Start accepts. Automaton has has 161 states, 161 states have (on average 2.0683229813664594) internal successors, (333), 160 states have internal predecessors, (333), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 362 [2022-01-31 19:29:01,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:29:01,858 INFO L225 Difference]: With dead ends: 372 [2022-01-31 19:29:01,858 INFO L226 Difference]: Without dead ends: 348 [2022-01-31 19:29:01,863 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 317 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12560 ImplicationChecksByTransitivity, 13.1s TimeCoverageRelationStatistics Valid=38160, Invalid=63282, Unknown=0, NotChecked=0, Total=101442 [2022-01-31 19:29:01,863 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 335 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:29:01,863 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [338 Valid, 52 Invalid, 598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:29:01,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2022-01-31 19:29:02,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 347. [2022-01-31 19:29:02,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 339 states have (on average 1.008849557522124) internal successors, (342), 339 states have internal predecessors, (342), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:29:02,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 351 transitions. [2022-01-31 19:29:02,015 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 351 transitions. Word has length 362 [2022-01-31 19:29:02,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:29:02,016 INFO L470 AbstractCegarLoop]: Abstraction has 347 states and 351 transitions. [2022-01-31 19:29:02,016 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 161 states, 161 states have (on average 2.0683229813664594) internal successors, (333), 160 states have internal predecessors, (333), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:29:02,016 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 351 transitions. [2022-01-31 19:29:02,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2022-01-31 19:29:02,017 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:29:02,017 INFO L514 BasicCegarLoop]: trace histogram [158, 158, 6, 6, 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] [2022-01-31 19:29:02,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2022-01-31 19:29:02,017 INFO L402 AbstractCegarLoop]: === Iteration 163 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:29:02,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:29:02,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1118922212, now seen corresponding path program 158 times [2022-01-31 19:29:02,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:29:02,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [802885394] [2022-01-31 19:29:02,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:29:02,019 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:29:02,019 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:29:02,019 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:29:02,054 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:29:02,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:29:08,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:29:08,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:29:08,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2022-01-31 19:29:08,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:29:08,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-01-31 19:29:08,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:29:08,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2022-01-31 19:29:08,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:29:08,221 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:29:08,221 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:29:08,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [802885394] [2022-01-31 19:29:08,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [802885394] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:29:08,222 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:29:08,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [162] imperfect sequences [] total 162 [2022-01-31 19:29:08,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863133606] [2022-01-31 19:29:08,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:29:08,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 162 states [2022-01-31 19:29:08,222 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:29:08,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 162 interpolants. [2022-01-31 19:29:08,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12882, Invalid=13200, Unknown=0, NotChecked=0, Total=26082 [2022-01-31 19:29:08,226 INFO L87 Difference]: Start difference. First operand 347 states and 351 transitions. Second operand has 162 states, 162 states have (on average 2.067901234567901) internal successors, (335), 161 states have internal predecessors, (335), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:29:14,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:29:14,465 INFO L93 Difference]: Finished difference Result 374 states and 382 transitions. [2022-01-31 19:29:14,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 162 states. [2022-01-31 19:29:14,465 INFO L78 Accepts]: Start accepts. Automaton has has 162 states, 162 states have (on average 2.067901234567901) internal successors, (335), 161 states have internal predecessors, (335), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 364 [2022-01-31 19:29:14,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:29:14,466 INFO L225 Difference]: With dead ends: 374 [2022-01-31 19:29:14,466 INFO L226 Difference]: Without dead ends: 350 [2022-01-31 19:29:14,470 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 319 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12719 ImplicationChecksByTransitivity, 11.6s TimeCoverageRelationStatistics Valid=38640, Invalid=64080, Unknown=0, NotChecked=0, Total=102720 [2022-01-31 19:29:14,470 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 337 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:29:14,470 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [340 Valid, 67 Invalid, 667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 500 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:29:14,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2022-01-31 19:29:14,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 349. [2022-01-31 19:29:14,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 341 states have (on average 1.0087976539589443) internal successors, (344), 341 states have internal predecessors, (344), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:29:14,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 353 transitions. [2022-01-31 19:29:14,629 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 353 transitions. Word has length 364 [2022-01-31 19:29:14,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:29:14,630 INFO L470 AbstractCegarLoop]: Abstraction has 349 states and 353 transitions. [2022-01-31 19:29:14,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 162 states, 162 states have (on average 2.067901234567901) internal successors, (335), 161 states have internal predecessors, (335), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:29:14,630 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 353 transitions. [2022-01-31 19:29:14,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2022-01-31 19:29:14,631 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:29:14,631 INFO L514 BasicCegarLoop]: trace histogram [159, 159, 6, 6, 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] [2022-01-31 19:29:14,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2022-01-31 19:29:14,631 INFO L402 AbstractCegarLoop]: === Iteration 164 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:29:14,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:29:14,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1836777402, now seen corresponding path program 159 times [2022-01-31 19:29:14,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:29:14,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1515870881] [2022-01-31 19:29:14,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:29:14,633 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:29:14,633 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:29:14,633 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:29:14,648 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:29:14,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:29:19,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:29:19,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:29:19,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-01-31 19:29:19,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:29:19,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2022-01-31 19:29:19,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:29:19,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2022-01-31 19:29:19,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:29:19,887 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:29:19,887 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:29:19,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1515870881] [2022-01-31 19:29:19,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1515870881] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:29:19,887 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:29:19,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [163] imperfect sequences [] total 163 [2022-01-31 19:29:19,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081621709] [2022-01-31 19:29:19,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:29:19,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 163 states [2022-01-31 19:29:19,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:29:19,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 163 interpolants. [2022-01-31 19:29:19,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13043, Invalid=13363, Unknown=0, NotChecked=0, Total=26406 [2022-01-31 19:29:19,890 INFO L87 Difference]: Start difference. First operand 349 states and 353 transitions. Second operand has 163 states, 163 states have (on average 2.067484662576687) internal successors, (337), 162 states have internal predecessors, (337), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:29:27,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:29:27,778 INFO L93 Difference]: Finished difference Result 376 states and 384 transitions. [2022-01-31 19:29:27,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 163 states. [2022-01-31 19:29:27,779 INFO L78 Accepts]: Start accepts. Automaton has has 163 states, 163 states have (on average 2.067484662576687) internal successors, (337), 162 states have internal predecessors, (337), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 366 [2022-01-31 19:29:27,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:29:27,780 INFO L225 Difference]: With dead ends: 376 [2022-01-31 19:29:27,780 INFO L226 Difference]: Without dead ends: 352 [2022-01-31 19:29:27,786 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 321 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12879 ImplicationChecksByTransitivity, 12.2s TimeCoverageRelationStatistics Valid=39123, Invalid=64883, Unknown=0, NotChecked=0, Total=104006 [2022-01-31 19:29:27,786 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 339 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:29:27,786 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [342 Valid, 37 Invalid, 539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 370 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:29:27,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2022-01-31 19:29:27,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 351. [2022-01-31 19:29:27,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 343 states have (on average 1.0087463556851313) internal successors, (346), 343 states have internal predecessors, (346), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:29:27,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 355 transitions. [2022-01-31 19:29:27,976 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 355 transitions. Word has length 366 [2022-01-31 19:29:27,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:29:27,976 INFO L470 AbstractCegarLoop]: Abstraction has 351 states and 355 transitions. [2022-01-31 19:29:27,976 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 163 states, 163 states have (on average 2.067484662576687) internal successors, (337), 162 states have internal predecessors, (337), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:29:27,976 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 355 transitions. [2022-01-31 19:29:27,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2022-01-31 19:29:27,977 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:29:27,977 INFO L514 BasicCegarLoop]: trace histogram [160, 160, 6, 6, 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] [2022-01-31 19:29:27,977 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2022-01-31 19:29:27,977 INFO L402 AbstractCegarLoop]: === Iteration 165 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:29:27,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:29:27,978 INFO L85 PathProgramCache]: Analyzing trace with hash 1004243496, now seen corresponding path program 160 times [2022-01-31 19:29:27,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:29:27,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1971228978] [2022-01-31 19:29:27,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:29:28,004 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:29:28,004 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:29:28,004 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:29:28,018 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:29:28,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:29:33,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:29:33,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:29:33,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-01-31 19:29:33,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:29:33,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-01-31 19:29:33,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:29:33,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2022-01-31 19:29:33,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:29:33,953 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:29:33,953 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:29:33,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1971228978] [2022-01-31 19:29:33,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1971228978] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:29:33,953 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:29:33,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [164] imperfect sequences [] total 164 [2022-01-31 19:29:33,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390740446] [2022-01-31 19:29:33,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:29:33,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 164 states [2022-01-31 19:29:33,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:29:33,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 164 interpolants. [2022-01-31 19:29:33,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13205, Invalid=13527, Unknown=0, NotChecked=0, Total=26732 [2022-01-31 19:29:33,958 INFO L87 Difference]: Start difference. First operand 351 states and 355 transitions. Second operand has 164 states, 164 states have (on average 2.067073170731707) internal successors, (339), 163 states have internal predecessors, (339), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:29:41,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:29:41,339 INFO L93 Difference]: Finished difference Result 378 states and 386 transitions. [2022-01-31 19:29:41,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 164 states. [2022-01-31 19:29:41,339 INFO L78 Accepts]: Start accepts. Automaton has has 164 states, 164 states have (on average 2.067073170731707) internal successors, (339), 163 states have internal predecessors, (339), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 368 [2022-01-31 19:29:41,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:29:41,340 INFO L225 Difference]: With dead ends: 378 [2022-01-31 19:29:41,340 INFO L226 Difference]: Without dead ends: 354 [2022-01-31 19:29:41,344 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 323 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13040 ImplicationChecksByTransitivity, 12.4s TimeCoverageRelationStatistics Valid=39609, Invalid=65691, Unknown=0, NotChecked=0, Total=105300 [2022-01-31 19:29:41,344 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 341 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 19:29:41,344 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [344 Valid, 57 Invalid, 630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 460 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 19:29:41,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2022-01-31 19:29:41,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 353. [2022-01-31 19:29:41,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 345 states have (on average 1.008695652173913) internal successors, (348), 345 states have internal predecessors, (348), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:29:41,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 357 transitions. [2022-01-31 19:29:41,501 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 357 transitions. Word has length 368 [2022-01-31 19:29:41,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:29:41,502 INFO L470 AbstractCegarLoop]: Abstraction has 353 states and 357 transitions. [2022-01-31 19:29:41,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 164 states, 164 states have (on average 2.067073170731707) internal successors, (339), 163 states have internal predecessors, (339), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:29:41,502 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 357 transitions. [2022-01-31 19:29:41,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2022-01-31 19:29:41,503 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:29:41,503 INFO L514 BasicCegarLoop]: trace histogram [161, 161, 6, 6, 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] [2022-01-31 19:29:41,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2022-01-31 19:29:41,503 INFO L402 AbstractCegarLoop]: === Iteration 166 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:29:41,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:29:41,504 INFO L85 PathProgramCache]: Analyzing trace with hash -373873782, now seen corresponding path program 161 times [2022-01-31 19:29:41,504 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:29:41,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [241506680] [2022-01-31 19:29:41,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:29:41,505 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:29:41,505 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:29:41,505 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:29:41,518 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:29:41,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:29:46,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:29:46,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:29:46,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2022-01-31 19:29:46,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:29:46,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2022-01-31 19:29:46,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:29:46,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2022-01-31 19:29:46,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:29:46,500 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:29:46,501 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:29:46,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [241506680] [2022-01-31 19:29:46,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [241506680] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:29:46,501 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:29:46,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [165] imperfect sequences [] total 165 [2022-01-31 19:29:46,501 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385830721] [2022-01-31 19:29:46,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:29:46,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 165 states [2022-01-31 19:29:46,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:29:46,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 165 interpolants. [2022-01-31 19:29:46,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13368, Invalid=13692, Unknown=0, NotChecked=0, Total=27060 [2022-01-31 19:29:46,505 INFO L87 Difference]: Start difference. First operand 353 states and 357 transitions. Second operand has 165 states, 165 states have (on average 2.066666666666667) internal successors, (341), 164 states have internal predecessors, (341), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:29:54,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:29:54,458 INFO L93 Difference]: Finished difference Result 380 states and 388 transitions. [2022-01-31 19:29:54,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 165 states. [2022-01-31 19:29:54,459 INFO L78 Accepts]: Start accepts. Automaton has has 165 states, 165 states have (on average 2.066666666666667) internal successors, (341), 164 states have internal predecessors, (341), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 370 [2022-01-31 19:29:54,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:29:54,459 INFO L225 Difference]: With dead ends: 380 [2022-01-31 19:29:54,459 INFO L226 Difference]: Without dead ends: 356 [2022-01-31 19:29:54,463 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 325 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13202 ImplicationChecksByTransitivity, 12.0s TimeCoverageRelationStatistics Valid=40098, Invalid=66504, Unknown=0, NotChecked=0, Total=106602 [2022-01-31 19:29:54,464 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 343 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 506 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 19:29:54,464 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [346 Valid, 67 Invalid, 679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 506 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 19:29:54,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-01-31 19:29:54,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 355. [2022-01-31 19:29:54,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 347 states have (on average 1.0086455331412103) internal successors, (350), 347 states have internal predecessors, (350), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:29:54,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 359 transitions. [2022-01-31 19:29:54,624 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 359 transitions. Word has length 370 [2022-01-31 19:29:54,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:29:54,624 INFO L470 AbstractCegarLoop]: Abstraction has 355 states and 359 transitions. [2022-01-31 19:29:54,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 165 states, 165 states have (on average 2.066666666666667) internal successors, (341), 164 states have internal predecessors, (341), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:29:54,624 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 359 transitions. [2022-01-31 19:29:54,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2022-01-31 19:29:54,626 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:29:54,626 INFO L514 BasicCegarLoop]: trace histogram [162, 162, 6, 6, 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] [2022-01-31 19:29:54,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2022-01-31 19:29:54,626 INFO L402 AbstractCegarLoop]: === Iteration 167 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:29:54,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:29:54,626 INFO L85 PathProgramCache]: Analyzing trace with hash -1894650772, now seen corresponding path program 162 times [2022-01-31 19:29:54,626 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:29:54,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1447949217] [2022-01-31 19:29:54,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:29:54,627 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:29:54,627 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:29:54,627 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:29:54,641 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:29:54,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:29:59,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:29:59,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:29:59,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2022-01-31 19:29:59,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:29:59,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-01-31 19:29:59,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:29:59,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2022-01-31 19:29:59,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:29:59,510 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:29:59,510 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:29:59,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1447949217] [2022-01-31 19:29:59,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1447949217] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:29:59,510 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:29:59,510 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [166] imperfect sequences [] total 166 [2022-01-31 19:29:59,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305663554] [2022-01-31 19:29:59,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:29:59,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 166 states [2022-01-31 19:29:59,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:29:59,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 166 interpolants. [2022-01-31 19:29:59,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13532, Invalid=13858, Unknown=0, NotChecked=0, Total=27390 [2022-01-31 19:29:59,514 INFO L87 Difference]: Start difference. First operand 355 states and 359 transitions. Second operand has 166 states, 166 states have (on average 2.066265060240964) internal successors, (343), 165 states have internal predecessors, (343), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:30:06,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:30:06,003 INFO L93 Difference]: Finished difference Result 382 states and 390 transitions. [2022-01-31 19:30:06,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 166 states. [2022-01-31 19:30:06,003 INFO L78 Accepts]: Start accepts. Automaton has has 166 states, 166 states have (on average 2.066265060240964) internal successors, (343), 165 states have internal predecessors, (343), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 372 [2022-01-31 19:30:06,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:30:06,004 INFO L225 Difference]: With dead ends: 382 [2022-01-31 19:30:06,004 INFO L226 Difference]: Without dead ends: 358 [2022-01-31 19:30:06,009 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 327 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13365 ImplicationChecksByTransitivity, 10.4s TimeCoverageRelationStatistics Valid=40590, Invalid=67322, Unknown=0, NotChecked=0, Total=107912 [2022-01-31 19:30:06,010 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 345 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 348 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:30:06,010 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [348 Valid, 72 Invalid, 702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 530 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:30:06,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2022-01-31 19:30:06,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 357. [2022-01-31 19:30:06,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 349 states have (on average 1.008595988538682) internal successors, (352), 349 states have internal predecessors, (352), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:30:06,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 361 transitions. [2022-01-31 19:30:06,188 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 361 transitions. Word has length 372 [2022-01-31 19:30:06,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:30:06,188 INFO L470 AbstractCegarLoop]: Abstraction has 357 states and 361 transitions. [2022-01-31 19:30:06,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 166 states, 166 states have (on average 2.066265060240964) internal successors, (343), 165 states have internal predecessors, (343), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:30:06,188 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 361 transitions. [2022-01-31 19:30:06,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2022-01-31 19:30:06,189 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:30:06,189 INFO L514 BasicCegarLoop]: trace histogram [163, 163, 6, 6, 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] [2022-01-31 19:30:06,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2022-01-31 19:30:06,189 INFO L402 AbstractCegarLoop]: === Iteration 168 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:30:06,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:30:06,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1222509774, now seen corresponding path program 163 times [2022-01-31 19:30:06,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:30:06,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1525956040] [2022-01-31 19:30:06,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:30:06,191 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:30:06,191 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:30:06,191 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:30:06,205 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:30:06,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:30:11,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:30:11,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:30:11,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-01-31 19:30:11,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:30:11,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2022-01-31 19:30:11,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:30:11,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2022-01-31 19:30:11,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:30:11,454 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:30:11,454 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:30:11,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1525956040] [2022-01-31 19:30:11,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1525956040] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:30:11,454 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:30:11,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [167] imperfect sequences [] total 167 [2022-01-31 19:30:11,454 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53311644] [2022-01-31 19:30:11,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:30:11,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 167 states [2022-01-31 19:30:11,455 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:30:11,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 167 interpolants. [2022-01-31 19:30:11,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13697, Invalid=14025, Unknown=0, NotChecked=0, Total=27722 [2022-01-31 19:30:11,457 INFO L87 Difference]: Start difference. First operand 357 states and 361 transitions. Second operand has 167 states, 167 states have (on average 2.065868263473054) internal successors, (345), 166 states have internal predecessors, (345), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:30:17,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:30:17,892 INFO L93 Difference]: Finished difference Result 384 states and 392 transitions. [2022-01-31 19:30:17,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 167 states. [2022-01-31 19:30:17,892 INFO L78 Accepts]: Start accepts. Automaton has has 167 states, 167 states have (on average 2.065868263473054) internal successors, (345), 166 states have internal predecessors, (345), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 374 [2022-01-31 19:30:17,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:30:17,893 INFO L225 Difference]: With dead ends: 384 [2022-01-31 19:30:17,893 INFO L226 Difference]: Without dead ends: 360 [2022-01-31 19:30:17,898 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 329 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13529 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=41085, Invalid=68145, Unknown=0, NotChecked=0, Total=109230 [2022-01-31 19:30:17,898 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 347 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:30:17,898 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [350 Valid, 47 Invalid, 594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:30:17,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2022-01-31 19:30:18,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 359. [2022-01-31 19:30:18,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 351 states have (on average 1.0085470085470085) internal successors, (354), 351 states have internal predecessors, (354), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:30:18,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 363 transitions. [2022-01-31 19:30:18,098 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 363 transitions. Word has length 374 [2022-01-31 19:30:18,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:30:18,098 INFO L470 AbstractCegarLoop]: Abstraction has 359 states and 363 transitions. [2022-01-31 19:30:18,098 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 167 states, 167 states have (on average 2.065868263473054) internal successors, (345), 166 states have internal predecessors, (345), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:30:18,098 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 363 transitions. [2022-01-31 19:30:18,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2022-01-31 19:30:18,099 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:30:18,100 INFO L514 BasicCegarLoop]: trace histogram [164, 164, 6, 6, 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] [2022-01-31 19:30:18,100 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2022-01-31 19:30:18,100 INFO L402 AbstractCegarLoop]: === Iteration 169 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:30:18,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:30:18,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1073378128, now seen corresponding path program 164 times [2022-01-31 19:30:18,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:30:18,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [828413680] [2022-01-31 19:30:18,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:30:18,101 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:30:18,101 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:30:18,101 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:30:18,115 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:30:18,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:30:25,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:30:25,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:30:25,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-01-31 19:30:25,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:30:25,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-01-31 19:30:25,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:30:25,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2022-01-31 19:30:25,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:30:25,773 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:30:25,773 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:30:25,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [828413680] [2022-01-31 19:30:25,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [828413680] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:30:25,773 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:30:25,773 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [168] imperfect sequences [] total 168 [2022-01-31 19:30:25,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501952476] [2022-01-31 19:30:25,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:30:25,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 168 states [2022-01-31 19:30:25,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:30:25,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 168 interpolants. [2022-01-31 19:30:25,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13863, Invalid=14193, Unknown=0, NotChecked=0, Total=28056 [2022-01-31 19:30:25,776 INFO L87 Difference]: Start difference. First operand 359 states and 363 transitions. Second operand has 168 states, 168 states have (on average 2.0654761904761907) internal successors, (347), 167 states have internal predecessors, (347), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:30:32,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:30:32,855 INFO L93 Difference]: Finished difference Result 386 states and 394 transitions. [2022-01-31 19:30:32,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 168 states. [2022-01-31 19:30:32,855 INFO L78 Accepts]: Start accepts. Automaton has has 168 states, 168 states have (on average 2.0654761904761907) internal successors, (347), 167 states have internal predecessors, (347), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 376 [2022-01-31 19:30:32,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:30:32,871 INFO L225 Difference]: With dead ends: 386 [2022-01-31 19:30:32,871 INFO L226 Difference]: Without dead ends: 362 [2022-01-31 19:30:32,876 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 331 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13694 ImplicationChecksByTransitivity, 13.8s TimeCoverageRelationStatistics Valid=41583, Invalid=68973, Unknown=0, NotChecked=0, Total=110556 [2022-01-31 19:30:32,877 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 349 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 534 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 19:30:32,877 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [352 Valid, 72 Invalid, 705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 534 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 19:30:32,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2022-01-31 19:30:33,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 361. [2022-01-31 19:30:33,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 353 states have (on average 1.0084985835694051) internal successors, (356), 353 states have internal predecessors, (356), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:30:33,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 365 transitions. [2022-01-31 19:30:33,084 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 365 transitions. Word has length 376 [2022-01-31 19:30:33,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:30:33,084 INFO L470 AbstractCegarLoop]: Abstraction has 361 states and 365 transitions. [2022-01-31 19:30:33,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 168 states, 168 states have (on average 2.0654761904761907) internal successors, (347), 167 states have internal predecessors, (347), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:30:33,084 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 365 transitions. [2022-01-31 19:30:33,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2022-01-31 19:30:33,085 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:30:33,085 INFO L514 BasicCegarLoop]: trace histogram [165, 165, 6, 6, 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] [2022-01-31 19:30:33,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2022-01-31 19:30:33,086 INFO L402 AbstractCegarLoop]: === Iteration 170 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:30:33,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:30:33,086 INFO L85 PathProgramCache]: Analyzing trace with hash 191538194, now seen corresponding path program 165 times [2022-01-31 19:30:33,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:30:33,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [942674960] [2022-01-31 19:30:33,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:30:33,087 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:30:33,087 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:30:33,087 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:30:33,101 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:30:33,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:30:38,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:30:38,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:30:38,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2022-01-31 19:30:38,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:30:38,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2022-01-31 19:30:38,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:30:38,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2022-01-31 19:30:38,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:30:38,615 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:30:38,616 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:30:38,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [942674960] [2022-01-31 19:30:38,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [942674960] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:30:38,616 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:30:38,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [169] imperfect sequences [] total 169 [2022-01-31 19:30:38,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985651901] [2022-01-31 19:30:38,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:30:38,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 169 states [2022-01-31 19:30:38,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:30:38,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 169 interpolants. [2022-01-31 19:30:38,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14030, Invalid=14362, Unknown=0, NotChecked=0, Total=28392 [2022-01-31 19:30:38,619 INFO L87 Difference]: Start difference. First operand 361 states and 365 transitions. Second operand has 169 states, 169 states have (on average 2.06508875739645) internal successors, (349), 168 states have internal predecessors, (349), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:30:45,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:30:45,663 INFO L93 Difference]: Finished difference Result 388 states and 396 transitions. [2022-01-31 19:30:45,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 169 states. [2022-01-31 19:30:45,663 INFO L78 Accepts]: Start accepts. Automaton has has 169 states, 169 states have (on average 2.06508875739645) internal successors, (349), 168 states have internal predecessors, (349), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 378 [2022-01-31 19:30:45,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:30:45,664 INFO L225 Difference]: With dead ends: 388 [2022-01-31 19:30:45,664 INFO L226 Difference]: Without dead ends: 364 [2022-01-31 19:30:45,669 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 333 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13860 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=42084, Invalid=69806, Unknown=0, NotChecked=0, Total=111890 [2022-01-31 19:30:45,669 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 351 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 354 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 177 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 19:30:45,669 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [354 Valid, 52 Invalid, 625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [177 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 19:30:45,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2022-01-31 19:30:45,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 363. [2022-01-31 19:30:45,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 355 states have (on average 1.008450704225352) internal successors, (358), 355 states have internal predecessors, (358), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:30:45,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 367 transitions. [2022-01-31 19:30:45,867 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 367 transitions. Word has length 378 [2022-01-31 19:30:45,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:30:45,867 INFO L470 AbstractCegarLoop]: Abstraction has 363 states and 367 transitions. [2022-01-31 19:30:45,867 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 169 states, 169 states have (on average 2.06508875739645) internal successors, (349), 168 states have internal predecessors, (349), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:30:45,868 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 367 transitions. [2022-01-31 19:30:45,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2022-01-31 19:30:45,869 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:30:45,869 INFO L514 BasicCegarLoop]: trace histogram [166, 166, 6, 6, 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] [2022-01-31 19:30:45,869 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2022-01-31 19:30:45,869 INFO L402 AbstractCegarLoop]: === Iteration 171 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:30:45,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:30:45,869 INFO L85 PathProgramCache]: Analyzing trace with hash 300378868, now seen corresponding path program 166 times [2022-01-31 19:30:45,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:30:45,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [724166845] [2022-01-31 19:30:45,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:30:45,870 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:30:45,871 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:30:45,871 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:30:45,885 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:30:45,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:30:52,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:30:52,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:30:52,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2022-01-31 19:30:52,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:30:52,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2022-01-31 19:30:52,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:30:52,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2022-01-31 19:30:52,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:30:52,059 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:30:52,059 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:30:52,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [724166845] [2022-01-31 19:30:52,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [724166845] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:30:52,059 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:30:52,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [170] imperfect sequences [] total 170 [2022-01-31 19:30:52,059 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850708341] [2022-01-31 19:30:52,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:30:52,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 170 states [2022-01-31 19:30:52,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:30:52,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 170 interpolants. [2022-01-31 19:30:52,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14198, Invalid=14532, Unknown=0, NotChecked=0, Total=28730 [2022-01-31 19:30:52,063 INFO L87 Difference]: Start difference. First operand 363 states and 367 transitions. Second operand has 170 states, 170 states have (on average 2.0647058823529414) internal successors, (351), 169 states have internal predecessors, (351), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:30:59,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:30:59,726 INFO L93 Difference]: Finished difference Result 390 states and 398 transitions. [2022-01-31 19:30:59,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 170 states. [2022-01-31 19:30:59,726 INFO L78 Accepts]: Start accepts. Automaton has has 170 states, 170 states have (on average 2.0647058823529414) internal successors, (351), 169 states have internal predecessors, (351), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 380 [2022-01-31 19:30:59,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:30:59,727 INFO L225 Difference]: With dead ends: 390 [2022-01-31 19:30:59,727 INFO L226 Difference]: Without dead ends: 366 [2022-01-31 19:30:59,733 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 335 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14027 ImplicationChecksByTransitivity, 12.8s TimeCoverageRelationStatistics Valid=42588, Invalid=70644, Unknown=0, NotChecked=0, Total=113232 [2022-01-31 19:30:59,733 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 353 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 516 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 19:30:59,733 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [356 Valid, 67 Invalid, 692 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 516 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 19:30:59,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2022-01-31 19:30:59,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 365. [2022-01-31 19:30:59,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 357 states have (on average 1.0084033613445378) internal successors, (360), 357 states have internal predecessors, (360), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:30:59,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 369 transitions. [2022-01-31 19:30:59,923 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 369 transitions. Word has length 380 [2022-01-31 19:30:59,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:30:59,923 INFO L470 AbstractCegarLoop]: Abstraction has 365 states and 369 transitions. [2022-01-31 19:30:59,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 170 states, 170 states have (on average 2.0647058823529414) internal successors, (351), 169 states have internal predecessors, (351), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:30:59,923 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 369 transitions. [2022-01-31 19:30:59,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2022-01-31 19:30:59,924 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:30:59,924 INFO L514 BasicCegarLoop]: trace histogram [167, 167, 6, 6, 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] [2022-01-31 19:30:59,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2022-01-31 19:30:59,925 INFO L402 AbstractCegarLoop]: === Iteration 172 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:30:59,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:30:59,925 INFO L85 PathProgramCache]: Analyzing trace with hash 1817051478, now seen corresponding path program 167 times [2022-01-31 19:30:59,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:30:59,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1466906676] [2022-01-31 19:30:59,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:30:59,926 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:30:59,926 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:30:59,926 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:30:59,940 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:31:00,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:31:05,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:31:05,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:31:05,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-01-31 19:31:05,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:31:05,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2022-01-31 19:31:05,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:31:05,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2022-01-31 19:31:05,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:31:05,209 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:31:05,209 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:31:05,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1466906676] [2022-01-31 19:31:05,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1466906676] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:31:05,209 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:31:05,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [171] imperfect sequences [] total 171 [2022-01-31 19:31:05,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744928421] [2022-01-31 19:31:05,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:31:05,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 171 states [2022-01-31 19:31:05,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:31:05,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 171 interpolants. [2022-01-31 19:31:05,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14367, Invalid=14703, Unknown=0, NotChecked=0, Total=29070 [2022-01-31 19:31:05,213 INFO L87 Difference]: Start difference. First operand 365 states and 369 transitions. Second operand has 171 states, 171 states have (on average 2.064327485380117) internal successors, (353), 170 states have internal predecessors, (353), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:31:12,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:31:12,302 INFO L93 Difference]: Finished difference Result 392 states and 400 transitions. [2022-01-31 19:31:12,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 171 states. [2022-01-31 19:31:12,303 INFO L78 Accepts]: Start accepts. Automaton has has 171 states, 171 states have (on average 2.064327485380117) internal successors, (353), 170 states have internal predecessors, (353), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 382 [2022-01-31 19:31:12,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:31:12,303 INFO L225 Difference]: With dead ends: 392 [2022-01-31 19:31:12,303 INFO L226 Difference]: Without dead ends: 368 [2022-01-31 19:31:12,308 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 337 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14195 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=43095, Invalid=71487, Unknown=0, NotChecked=0, Total=114582 [2022-01-31 19:31:12,308 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 355 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 474 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:31:12,308 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [358 Valid, 57 Invalid, 654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 474 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:31:12,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2022-01-31 19:31:12,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 367. [2022-01-31 19:31:12,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 359 states have (on average 1.0083565459610029) internal successors, (362), 359 states have internal predecessors, (362), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:31:12,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 371 transitions. [2022-01-31 19:31:12,481 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 371 transitions. Word has length 382 [2022-01-31 19:31:12,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:31:12,481 INFO L470 AbstractCegarLoop]: Abstraction has 367 states and 371 transitions. [2022-01-31 19:31:12,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 171 states, 171 states have (on average 2.064327485380117) internal successors, (353), 170 states have internal predecessors, (353), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:31:12,481 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 371 transitions. [2022-01-31 19:31:12,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2022-01-31 19:31:12,483 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:31:12,483 INFO L514 BasicCegarLoop]: trace histogram [168, 168, 6, 6, 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] [2022-01-31 19:31:12,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2022-01-31 19:31:12,483 INFO L402 AbstractCegarLoop]: === Iteration 173 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:31:12,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:31:12,483 INFO L85 PathProgramCache]: Analyzing trace with hash -949450952, now seen corresponding path program 168 times [2022-01-31 19:31:12,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:31:12,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1927097035] [2022-01-31 19:31:12,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:31:12,484 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:31:12,484 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:31:12,485 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:31:12,499 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:31:12,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:31:18,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:31:18,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:31:18,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-01-31 19:31:18,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:31:18,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2022-01-31 19:31:18,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:31:18,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2022-01-31 19:31:18,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:31:18,331 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:31:18,331 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:31:18,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1927097035] [2022-01-31 19:31:18,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1927097035] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:31:18,332 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:31:18,332 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [172] imperfect sequences [] total 172 [2022-01-31 19:31:18,332 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282117349] [2022-01-31 19:31:18,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:31:18,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 172 states [2022-01-31 19:31:18,332 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:31:18,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 172 interpolants. [2022-01-31 19:31:18,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14537, Invalid=14875, Unknown=0, NotChecked=0, Total=29412 [2022-01-31 19:31:18,336 INFO L87 Difference]: Start difference. First operand 367 states and 371 transitions. Second operand has 172 states, 172 states have (on average 2.063953488372093) internal successors, (355), 171 states have internal predecessors, (355), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:31:26,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:31:26,137 INFO L93 Difference]: Finished difference Result 394 states and 402 transitions. [2022-01-31 19:31:26,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 172 states. [2022-01-31 19:31:26,137 INFO L78 Accepts]: Start accepts. Automaton has has 172 states, 172 states have (on average 2.063953488372093) internal successors, (355), 171 states have internal predecessors, (355), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 384 [2022-01-31 19:31:26,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:31:26,138 INFO L225 Difference]: With dead ends: 394 [2022-01-31 19:31:26,138 INFO L226 Difference]: Without dead ends: 370 [2022-01-31 19:31:26,143 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 339 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14364 ImplicationChecksByTransitivity, 12.7s TimeCoverageRelationStatistics Valid=43605, Invalid=72335, Unknown=0, NotChecked=0, Total=115940 [2022-01-31 19:31:26,143 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 357 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 19:31:26,143 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [360 Valid, 47 Invalid, 615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 19:31:26,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2022-01-31 19:31:26,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 369. [2022-01-31 19:31:26,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 361 states have (on average 1.0083102493074791) internal successors, (364), 361 states have internal predecessors, (364), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:31:26,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 373 transitions. [2022-01-31 19:31:26,317 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 373 transitions. Word has length 384 [2022-01-31 19:31:26,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:31:26,317 INFO L470 AbstractCegarLoop]: Abstraction has 369 states and 373 transitions. [2022-01-31 19:31:26,317 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 172 states, 172 states have (on average 2.063953488372093) internal successors, (355), 171 states have internal predecessors, (355), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:31:26,317 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 373 transitions. [2022-01-31 19:31:26,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2022-01-31 19:31:26,319 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:31:26,319 INFO L514 BasicCegarLoop]: trace histogram [169, 169, 6, 6, 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] [2022-01-31 19:31:26,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2022-01-31 19:31:26,319 INFO L402 AbstractCegarLoop]: === Iteration 174 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:31:26,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:31:26,319 INFO L85 PathProgramCache]: Analyzing trace with hash -973529958, now seen corresponding path program 169 times [2022-01-31 19:31:26,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:31:26,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [402315123] [2022-01-31 19:31:26,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:31:26,321 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:31:26,321 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:31:26,321 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:31:26,335 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:31:26,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:31:31,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:31:31,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:31:31,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2022-01-31 19:31:31,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:31:31,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2022-01-31 19:31:31,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:31:31,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2022-01-31 19:31:31,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:31:31,819 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:31:31,819 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:31:31,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [402315123] [2022-01-31 19:31:31,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [402315123] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:31:31,819 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:31:31,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [173] imperfect sequences [] total 173 [2022-01-31 19:31:31,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189204924] [2022-01-31 19:31:31,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:31:31,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 173 states [2022-01-31 19:31:31,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:31:31,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 173 interpolants. [2022-01-31 19:31:31,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14708, Invalid=15048, Unknown=0, NotChecked=0, Total=29756 [2022-01-31 19:31:31,824 INFO L87 Difference]: Start difference. First operand 369 states and 373 transitions. Second operand has 173 states, 173 states have (on average 2.0635838150289016) internal successors, (357), 172 states have internal predecessors, (357), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:31:40,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:31:40,360 INFO L93 Difference]: Finished difference Result 396 states and 404 transitions. [2022-01-31 19:31:40,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 173 states. [2022-01-31 19:31:40,360 INFO L78 Accepts]: Start accepts. Automaton has has 173 states, 173 states have (on average 2.0635838150289016) internal successors, (357), 172 states have internal predecessors, (357), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 386 [2022-01-31 19:31:40,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:31:40,361 INFO L225 Difference]: With dead ends: 396 [2022-01-31 19:31:40,361 INFO L226 Difference]: Without dead ends: 372 [2022-01-31 19:31:40,366 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 341 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14534 ImplicationChecksByTransitivity, 13.0s TimeCoverageRelationStatistics Valid=44118, Invalid=73188, Unknown=0, NotChecked=0, Total=117306 [2022-01-31 19:31:40,366 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 359 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 19:31:40,366 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [362 Valid, 62 Invalid, 681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 500 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 19:31:40,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2022-01-31 19:31:40,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 371. [2022-01-31 19:31:40,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 363 states have (on average 1.0082644628099173) internal successors, (366), 363 states have internal predecessors, (366), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:31:40,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 375 transitions. [2022-01-31 19:31:40,542 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 375 transitions. Word has length 386 [2022-01-31 19:31:40,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:31:40,543 INFO L470 AbstractCegarLoop]: Abstraction has 371 states and 375 transitions. [2022-01-31 19:31:40,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 173 states, 173 states have (on average 2.0635838150289016) internal successors, (357), 172 states have internal predecessors, (357), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:31:40,543 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 375 transitions. [2022-01-31 19:31:40,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2022-01-31 19:31:40,558 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:31:40,558 INFO L514 BasicCegarLoop]: trace histogram [170, 170, 6, 6, 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] [2022-01-31 19:31:40,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2022-01-31 19:31:40,559 INFO L402 AbstractCegarLoop]: === Iteration 175 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:31:40,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:31:40,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1656349052, now seen corresponding path program 170 times [2022-01-31 19:31:40,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:31:40,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1668143762] [2022-01-31 19:31:40,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:31:40,560 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:31:40,560 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:31:40,560 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:31:40,575 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:31:40,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat