/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/float-benchs/zonotope_3.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-31 22:55:51,080 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 22:55:51,081 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 22:55:51,108 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-31 22:55:51,115 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-31 22:55:51,116 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-31 22:55:51,117 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-31 22:55:51,118 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-31 22:55:51,118 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-31 22:55:51,119 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-31 22:55:51,120 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-31 22:55:51,145 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-31 22:55:51,146 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-31 22:55:51,148 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-31 22:55:51,149 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-31 22:55:51,150 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-31 22:55:51,152 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-31 22:55:51,175 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-31 22:55:51,176 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-31 22:55:51,179 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-31 22:55:51,181 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 22:55:51,192 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 22:55:51,192 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 22:55:51,194 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 22:55:51,194 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-31 22:55:51,195 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 22:55:51,195 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-31 22:55:51,195 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 22:55:51,195 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 22:55:51,195 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 22:55:51,195 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 22:55:51,196 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-31 22:55:51,196 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 22:55:51,196 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 22:55:51,196 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 22:55:51,196 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 22:55:51,196 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 22:55:51,196 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-31 22:55:51,196 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 22:55:51,197 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 22:55:51,197 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 22:55:51,197 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-01-31 22:55:51,197 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-31 22:55:51,198 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-01-31 22:55:51,198 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 22:55:51,392 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 22:55:51,410 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 22:55:51,411 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 22:55:51,412 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 22:55:51,414 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 22:55:51,414 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/zonotope_3.c.v+lhb-reducer.c [2022-01-31 22:55:51,475 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2aaaa065f/d2ea65f724b0409c990e6ca9970b7095/FLAG874e49eb6 [2022-01-31 22:55:51,810 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 22:55:51,811 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/zonotope_3.c.v+lhb-reducer.c [2022-01-31 22:55:51,824 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2aaaa065f/d2ea65f724b0409c990e6ca9970b7095/FLAG874e49eb6 [2022-01-31 22:55:51,836 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2aaaa065f/d2ea65f724b0409c990e6ca9970b7095 [2022-01-31 22:55:51,838 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 22:55:51,839 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-31 22:55:51,842 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 22:55:51,843 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 22:55:51,845 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 22:55:51,845 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 10:55:51" (1/1) ... [2022-01-31 22:55:51,846 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@732178fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:55:51, skipping insertion in model container [2022-01-31 22:55:51,846 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 10:55:51" (1/1) ... [2022-01-31 22:55:51,851 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 22:55:51,884 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 22:55:52,108 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/zonotope_3.c.v+lhb-reducer.c[12131,12144] [2022-01-31 22:55:52,114 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 22:55:52,119 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 22:55:52,172 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/zonotope_3.c.v+lhb-reducer.c[12131,12144] [2022-01-31 22:55:52,190 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 22:55:52,208 INFO L208 MainTranslator]: Completed translation [2022-01-31 22:55:52,208 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:55:52 WrapperNode [2022-01-31 22:55:52,208 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 22:55:52,209 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 22:55:52,209 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 22:55:52,209 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 22:55:52,217 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:55:52" (1/1) ... [2022-01-31 22:55:52,217 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:55:52" (1/1) ... [2022-01-31 22:55:52,234 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:55:52" (1/1) ... [2022-01-31 22:55:52,234 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:55:52" (1/1) ... [2022-01-31 22:55:52,243 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:55:52" (1/1) ... [2022-01-31 22:55:52,246 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:55:52" (1/1) ... [2022-01-31 22:55:52,261 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:55:52" (1/1) ... [2022-01-31 22:55:52,263 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 22:55:52,264 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 22:55:52,264 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 22:55:52,264 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 22:55:52,266 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:55:52" (1/1) ... [2022-01-31 22:55:52,271 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 22:55:52,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 22:55:52,287 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 22:55:52,343 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 22:55:52,361 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 22:55:52,361 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 22:55:52,361 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 22:55:52,361 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-01-31 22:55:52,362 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 22:55:52,362 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 22:55:52,362 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 22:55:52,362 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 22:55:52,362 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 22:55:52,363 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2022-01-31 22:55:52,363 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-01-31 22:55:52,364 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-01-31 22:55:52,364 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-01-31 22:55:52,364 INFO L130 BoogieDeclarations]: Found specification of procedure g [2022-01-31 22:55:52,364 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 22:55:52,365 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 22:55:52,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 22:55:52,365 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 22:55:52,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 22:55:52,365 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 22:55:52,365 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 22:55:52,458 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 22:55:52,459 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 22:55:52,674 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 22:55:52,678 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 22:55:52,678 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-31 22:55:52,679 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 10:55:52 BoogieIcfgContainer [2022-01-31 22:55:52,679 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 22:55:52,680 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 22:55:52,680 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 22:55:52,686 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 22:55:52,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 10:55:51" (1/3) ... [2022-01-31 22:55:52,686 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43e454e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 10:55:52, skipping insertion in model container [2022-01-31 22:55:52,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:55:52" (2/3) ... [2022-01-31 22:55:52,687 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43e454e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 10:55:52, skipping insertion in model container [2022-01-31 22:55:52,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 10:55:52" (3/3) ... [2022-01-31 22:55:52,687 INFO L111 eAbstractionObserver]: Analyzing ICFG zonotope_3.c.v+lhb-reducer.c [2022-01-31 22:55:52,690 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-01-31 22:55:52,690 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 22:55:52,715 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 22:55:52,719 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 22:55:52,719 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 22:55:52,728 INFO L276 IsEmpty]: Start isEmpty. Operand has 59 states, 53 states have (on average 1.830188679245283) internal successors, (97), 54 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 22:55:52,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-01-31 22:55:52,734 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:55:52,735 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:55:52,735 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:55:52,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:55:52,738 INFO L85 PathProgramCache]: Analyzing trace with hash -1348301876, now seen corresponding path program 1 times [2022-01-31 22:55:52,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:55:52,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [365491923] [2022-01-31 22:55:52,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:55:52,752 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:55:52,781 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:55:52,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:55:53,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:55:53,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:55:53,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:55:53,200 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:55:53,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [365491923] [2022-01-31 22:55:53,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [365491923] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:55:53,201 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:55:53,201 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-31 22:55:53,202 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427129571] [2022-01-31 22:55:53,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:55:53,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-31 22:55:53,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:55:53,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-31 22:55:53,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-31 22:55:53,231 INFO L87 Difference]: Start difference. First operand has 59 states, 53 states have (on average 1.830188679245283) internal successors, (97), 54 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:53,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:55:53,455 INFO L93 Difference]: Finished difference Result 73 states and 115 transitions. [2022-01-31 22:55:53,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-31 22:55:53,457 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 49 [2022-01-31 22:55:53,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:55:53,461 INFO L225 Difference]: With dead ends: 73 [2022-01-31 22:55:53,461 INFO L226 Difference]: Without dead ends: 55 [2022-01-31 22:55:53,463 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-01-31 22:55:53,465 INFO L933 BasicCegarLoop]: 100 mSDtfsCounter, 93 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 22:55:53,466 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [93 Valid, 314 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 22:55:53,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-01-31 22:55:53,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2022-01-31 22:55:53,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 51 states have (on average 1.0784313725490196) internal successors, (55), 51 states have internal predecessors, (55), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:53,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 58 transitions. [2022-01-31 22:55:53,489 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 58 transitions. Word has length 49 [2022-01-31 22:55:53,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:55:53,489 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 58 transitions. [2022-01-31 22:55:53,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:53,489 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 58 transitions. [2022-01-31 22:55:53,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-01-31 22:55:53,490 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:55:53,490 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:55:53,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 22:55:53,490 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:55:53,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:55:53,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1333197839, now seen corresponding path program 1 times [2022-01-31 22:55:53,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:55:53,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2131185581] [2022-01-31 22:55:53,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:55:53,492 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:55:53,493 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:55:53,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:55:53,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:55:53,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:55:53,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:55:53,827 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:55:53,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2131185581] [2022-01-31 22:55:53,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2131185581] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:55:53,828 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:55:53,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-01-31 22:55:53,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825029934] [2022-01-31 22:55:53,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:55:53,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-31 22:55:53,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:55:53,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-31 22:55:53,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2022-01-31 22:55:53,832 INFO L87 Difference]: Start difference. First operand 55 states and 58 transitions. Second operand has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 12 states have internal predecessors, (46), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:53,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:55:53,991 INFO L93 Difference]: Finished difference Result 68 states and 74 transitions. [2022-01-31 22:55:53,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-31 22:55:53,991 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 12 states have internal predecessors, (46), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 49 [2022-01-31 22:55:53,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:55:53,995 INFO L225 Difference]: With dead ends: 68 [2022-01-31 22:55:53,995 INFO L226 Difference]: Without dead ends: 61 [2022-01-31 22:55:53,998 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2022-01-31 22:55:54,000 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 69 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:55:54,000 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 148 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:55:54,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-01-31 22:55:54,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 57. [2022-01-31 22:55:54,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 53 states have (on average 1.0754716981132075) internal successors, (57), 53 states have internal predecessors, (57), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:54,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 60 transitions. [2022-01-31 22:55:54,023 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 60 transitions. Word has length 49 [2022-01-31 22:55:54,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:55:54,024 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 60 transitions. [2022-01-31 22:55:54,025 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 12 states have internal predecessors, (46), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:54,025 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 60 transitions. [2022-01-31 22:55:54,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-01-31 22:55:54,028 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:55:54,028 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:55:54,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-31 22:55:54,029 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:55:54,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:55:54,031 INFO L85 PathProgramCache]: Analyzing trace with hash -212880527, now seen corresponding path program 1 times [2022-01-31 22:55:54,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:55:54,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [463392965] [2022-01-31 22:55:54,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:55:54,127 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 25 HavocedVariables, 0 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 22:55:54,128 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 22:55:54,128 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:55:54,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:55:54,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:55:54,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:55:54,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:55:54,447 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:55:54,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [463392965] [2022-01-31 22:55:54,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [463392965] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:55:54,447 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:55:54,448 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-01-31 22:55:54,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163017984] [2022-01-31 22:55:54,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:55:54,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-31 22:55:54,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:55:54,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-31 22:55:54,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2022-01-31 22:55:54,449 INFO L87 Difference]: Start difference. First operand 57 states and 60 transitions. Second operand has 15 states, 15 states have (on average 3.4) internal successors, (51), 14 states have internal predecessors, (51), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:54,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:55:54,557 INFO L93 Difference]: Finished difference Result 75 states and 83 transitions. [2022-01-31 22:55:54,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-31 22:55:54,557 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.4) internal successors, (51), 14 states have internal predecessors, (51), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 54 [2022-01-31 22:55:54,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:55:54,558 INFO L225 Difference]: With dead ends: 75 [2022-01-31 22:55:54,558 INFO L226 Difference]: Without dead ends: 60 [2022-01-31 22:55:54,558 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2022-01-31 22:55:54,559 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 61 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:55:54,559 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 139 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:55:54,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-01-31 22:55:54,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2022-01-31 22:55:54,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 55 states have (on average 1.0727272727272728) internal successors, (59), 55 states have internal predecessors, (59), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:54,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 62 transitions. [2022-01-31 22:55:54,565 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 62 transitions. Word has length 54 [2022-01-31 22:55:54,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:55:54,566 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 62 transitions. [2022-01-31 22:55:54,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.4) internal successors, (51), 14 states have internal predecessors, (51), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:54,566 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 62 transitions. [2022-01-31 22:55:54,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-01-31 22:55:54,566 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:55:54,566 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:55:54,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-31 22:55:54,567 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:55:54,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:55:54,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1625529526, now seen corresponding path program 1 times [2022-01-31 22:55:54,567 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:55:54,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1582857575] [2022-01-31 22:55:54,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:55:54,571 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:55:54,571 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:55:54,571 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:55:54,572 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:55:54,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:55:54,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:55:54,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:55:54,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:55:54,816 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:55:54,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1582857575] [2022-01-31 22:55:54,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1582857575] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:55:54,817 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:55:54,817 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-31 22:55:54,817 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287918758] [2022-01-31 22:55:54,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:55:54,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-31 22:55:54,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:55:54,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-31 22:55:54,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2022-01-31 22:55:54,818 INFO L87 Difference]: Start difference. First operand 59 states and 62 transitions. Second operand has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 13 states have internal predecessors, (51), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:54,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:55:54,943 INFO L93 Difference]: Finished difference Result 73 states and 79 transitions. [2022-01-31 22:55:54,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-31 22:55:54,944 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 13 states have internal predecessors, (51), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 54 [2022-01-31 22:55:54,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:55:54,944 INFO L225 Difference]: With dead ends: 73 [2022-01-31 22:55:54,944 INFO L226 Difference]: Without dead ends: 66 [2022-01-31 22:55:54,945 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2022-01-31 22:55:54,945 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 63 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:55:54,946 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 149 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:55:54,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2022-01-31 22:55:54,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 62. [2022-01-31 22:55:54,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 58 states have (on average 1.0689655172413792) internal successors, (62), 58 states have internal predecessors, (62), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:54,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 65 transitions. [2022-01-31 22:55:54,968 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 65 transitions. Word has length 54 [2022-01-31 22:55:54,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:55:54,968 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 65 transitions. [2022-01-31 22:55:54,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 13 states have internal predecessors, (51), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:54,968 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 65 transitions. [2022-01-31 22:55:54,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-01-31 22:55:54,969 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:55:54,969 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:55:54,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-31 22:55:54,969 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:55:54,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:55:54,969 INFO L85 PathProgramCache]: Analyzing trace with hash 469683660, now seen corresponding path program 1 times [2022-01-31 22:55:54,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:55:54,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1253574707] [2022-01-31 22:55:54,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:55:54,992 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:55:54,992 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:55:54,992 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:55:54,993 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:55:55,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:55:55,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:55:55,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:55:55,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:55:55,175 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:55:55,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1253574707] [2022-01-31 22:55:55,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1253574707] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:55:55,176 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:55:55,176 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-31 22:55:55,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282409310] [2022-01-31 22:55:55,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:55:55,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-31 22:55:55,177 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:55:55,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-31 22:55:55,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-31 22:55:55,178 INFO L87 Difference]: Start difference. First operand 62 states and 65 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 3 states have internal predecessors, (54), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:55,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:55:55,263 INFO L93 Difference]: Finished difference Result 76 states and 82 transitions. [2022-01-31 22:55:55,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-31 22:55:55,263 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 3 states have internal predecessors, (54), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 59 [2022-01-31 22:55:55,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:55:55,268 INFO L225 Difference]: With dead ends: 76 [2022-01-31 22:55:55,269 INFO L226 Difference]: Without dead ends: 61 [2022-01-31 22:55:55,269 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-31 22:55:55,275 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 0 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:55:55,275 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 113 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:55:55,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-01-31 22:55:55,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2022-01-31 22:55:55,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 57 states have (on average 1.0350877192982457) internal successors, (59), 57 states have internal predecessors, (59), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:55,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 62 transitions. [2022-01-31 22:55:55,280 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 62 transitions. Word has length 59 [2022-01-31 22:55:55,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:55:55,283 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 62 transitions. [2022-01-31 22:55:55,283 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 3 states have internal predecessors, (54), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:55,283 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 62 transitions. [2022-01-31 22:55:55,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-01-31 22:55:55,284 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:55:55,284 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:55:55,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-31 22:55:55,284 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:55:55,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:55:55,285 INFO L85 PathProgramCache]: Analyzing trace with hash -1986873583, now seen corresponding path program 2 times [2022-01-31 22:55:55,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:55:55,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2129172323] [2022-01-31 22:55:55,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:55:55,289 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:55:55,289 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:55:55,289 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:55:55,290 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:55:55,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:55:55,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:55:55,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:55:55,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:55:55,549 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:55:55,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2129172323] [2022-01-31 22:55:55,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2129172323] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:55:55,549 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:55:55,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-01-31 22:55:55,549 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094262553] [2022-01-31 22:55:55,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:55:55,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-31 22:55:55,549 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:55:55,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-31 22:55:55,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2022-01-31 22:55:55,550 INFO L87 Difference]: Start difference. First operand 61 states and 62 transitions. Second operand has 15 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 14 states have internal predecessors, (56), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:55,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:55:55,645 INFO L93 Difference]: Finished difference Result 76 states and 78 transitions. [2022-01-31 22:55:55,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-31 22:55:55,645 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 14 states have internal predecessors, (56), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 59 [2022-01-31 22:55:55,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:55:55,646 INFO L225 Difference]: With dead ends: 76 [2022-01-31 22:55:55,646 INFO L226 Difference]: Without dead ends: 69 [2022-01-31 22:55:55,646 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2022-01-31 22:55:55,647 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 84 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:55:55,647 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 102 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:55:55,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-01-31 22:55:55,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 66. [2022-01-31 22:55:55,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 62 states have (on average 1.032258064516129) internal successors, (64), 62 states have internal predecessors, (64), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:55,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 67 transitions. [2022-01-31 22:55:55,655 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 67 transitions. Word has length 59 [2022-01-31 22:55:55,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:55:55,655 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 67 transitions. [2022-01-31 22:55:55,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 14 states have internal predecessors, (56), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:55,656 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 67 transitions. [2022-01-31 22:55:55,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-31 22:55:55,656 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:55:55,656 INFO L514 BasicCegarLoop]: trace histogram [4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:55:55,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-31 22:55:55,656 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:55:55,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:55:55,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1871502742, now seen corresponding path program 3 times [2022-01-31 22:55:55,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:55:55,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [61240165] [2022-01-31 22:55:55,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:55:55,669 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:55:55,670 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:55:55,670 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:55:55,671 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:55:55,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:55:55,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:55:55,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:55:55,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:55:55,912 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:55:55,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [61240165] [2022-01-31 22:55:55,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [61240165] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:55:55,912 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:55:55,912 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-01-31 22:55:55,912 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282909130] [2022-01-31 22:55:55,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:55:55,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-31 22:55:55,912 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:55:55,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-31 22:55:55,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2022-01-31 22:55:55,913 INFO L87 Difference]: Start difference. First operand 66 states and 67 transitions. Second operand has 16 states, 16 states have (on average 3.8125) internal successors, (61), 15 states have internal predecessors, (61), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:56,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:55:56,011 INFO L93 Difference]: Finished difference Result 81 states and 83 transitions. [2022-01-31 22:55:56,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-31 22:55:56,011 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.8125) internal successors, (61), 15 states have internal predecessors, (61), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 64 [2022-01-31 22:55:56,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:55:56,012 INFO L225 Difference]: With dead ends: 81 [2022-01-31 22:55:56,012 INFO L226 Difference]: Without dead ends: 74 [2022-01-31 22:55:56,012 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2022-01-31 22:55:56,013 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 66 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:55:56,013 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 134 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:55:56,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-01-31 22:55:56,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 71. [2022-01-31 22:55:56,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 67 states have (on average 1.0298507462686568) internal successors, (69), 67 states have internal predecessors, (69), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:56,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 72 transitions. [2022-01-31 22:55:56,019 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 72 transitions. Word has length 64 [2022-01-31 22:55:56,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:55:56,019 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 72 transitions. [2022-01-31 22:55:56,019 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.8125) internal successors, (61), 15 states have internal predecessors, (61), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:56,019 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 72 transitions. [2022-01-31 22:55:56,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-31 22:55:56,019 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:55:56,020 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:55:56,020 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-31 22:55:56,020 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:55:56,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:55:56,020 INFO L85 PathProgramCache]: Analyzing trace with hash -252771791, now seen corresponding path program 4 times [2022-01-31 22:55:56,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:55:56,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1077151101] [2022-01-31 22:55:56,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:55:56,023 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:55:56,023 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:55:56,023 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:55:56,024 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:55:56,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:55:56,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:55:56,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:55:56,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:55:56,289 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:55:56,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1077151101] [2022-01-31 22:55:56,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1077151101] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:55:56,290 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:55:56,290 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-01-31 22:55:56,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748003597] [2022-01-31 22:55:56,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:55:56,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-31 22:55:56,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:55:56,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-31 22:55:56,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2022-01-31 22:55:56,291 INFO L87 Difference]: Start difference. First operand 71 states and 72 transitions. Second operand has 17 states, 17 states have (on average 3.8823529411764706) internal successors, (66), 16 states have internal predecessors, (66), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:56,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:55:56,393 INFO L93 Difference]: Finished difference Result 86 states and 88 transitions. [2022-01-31 22:55:56,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-31 22:55:56,393 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.8823529411764706) internal successors, (66), 16 states have internal predecessors, (66), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 69 [2022-01-31 22:55:56,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:55:56,394 INFO L225 Difference]: With dead ends: 86 [2022-01-31 22:55:56,394 INFO L226 Difference]: Without dead ends: 79 [2022-01-31 22:55:56,394 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2022-01-31 22:55:56,395 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 66 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:55:56,395 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 184 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:55:56,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-01-31 22:55:56,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 76. [2022-01-31 22:55:56,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 72 states have (on average 1.0277777777777777) internal successors, (74), 72 states have internal predecessors, (74), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:56,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 77 transitions. [2022-01-31 22:55:56,400 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 77 transitions. Word has length 69 [2022-01-31 22:55:56,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:55:56,401 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 77 transitions. [2022-01-31 22:55:56,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.8823529411764706) internal successors, (66), 16 states have internal predecessors, (66), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:56,401 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 77 transitions. [2022-01-31 22:55:56,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-31 22:55:56,401 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:55:56,402 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:55:56,402 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-31 22:55:56,402 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:55:56,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:55:56,402 INFO L85 PathProgramCache]: Analyzing trace with hash 1942128246, now seen corresponding path program 5 times [2022-01-31 22:55:56,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:55:56,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [44778508] [2022-01-31 22:55:56,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:55:56,405 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:55:56,405 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:55:56,405 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:55:56,406 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:55:56,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:55:56,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:55:56,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:55:56,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:55:56,649 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:55:56,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [44778508] [2022-01-31 22:55:56,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [44778508] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:55:56,649 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:55:56,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-01-31 22:55:56,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794161598] [2022-01-31 22:55:56,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:55:56,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-31 22:55:56,650 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:55:56,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-31 22:55:56,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2022-01-31 22:55:56,650 INFO L87 Difference]: Start difference. First operand 76 states and 77 transitions. Second operand has 18 states, 18 states have (on average 3.9444444444444446) internal successors, (71), 17 states have internal predecessors, (71), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:56,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:55:56,748 INFO L93 Difference]: Finished difference Result 91 states and 93 transitions. [2022-01-31 22:55:56,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-31 22:55:56,748 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.9444444444444446) internal successors, (71), 17 states have internal predecessors, (71), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 74 [2022-01-31 22:55:56,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:55:56,749 INFO L225 Difference]: With dead ends: 91 [2022-01-31 22:55:56,749 INFO L226 Difference]: Without dead ends: 84 [2022-01-31 22:55:56,749 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2022-01-31 22:55:56,750 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 84 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:55:56,750 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 131 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:55:56,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2022-01-31 22:55:56,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 81. [2022-01-31 22:55:56,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 77 states have (on average 1.025974025974026) internal successors, (79), 77 states have internal predecessors, (79), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:56,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 82 transitions. [2022-01-31 22:55:56,771 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 82 transitions. Word has length 74 [2022-01-31 22:55:56,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:55:56,771 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 82 transitions. [2022-01-31 22:55:56,772 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.9444444444444446) internal successors, (71), 17 states have internal predecessors, (71), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:56,772 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 82 transitions. [2022-01-31 22:55:56,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-31 22:55:56,772 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:55:56,772 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:55:56,772 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-31 22:55:56,773 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:55:56,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:55:56,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1916790097, now seen corresponding path program 6 times [2022-01-31 22:55:56,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:55:56,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1468500513] [2022-01-31 22:55:56,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:55:56,775 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:55:56,776 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:55:56,776 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:55:56,777 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:55:56,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:55:57,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:55:57,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:55:57,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:55:57,036 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:55:57,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1468500513] [2022-01-31 22:55:57,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1468500513] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:55:57,037 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:55:57,037 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-31 22:55:57,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320032203] [2022-01-31 22:55:57,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:55:57,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-31 22:55:57,037 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:55:57,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-31 22:55:57,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2022-01-31 22:55:57,038 INFO L87 Difference]: Start difference. First operand 81 states and 82 transitions. Second operand has 19 states, 19 states have (on average 4.0) internal successors, (76), 18 states have internal predecessors, (76), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:57,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:55:57,140 INFO L93 Difference]: Finished difference Result 96 states and 98 transitions. [2022-01-31 22:55:57,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-31 22:55:57,140 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.0) internal successors, (76), 18 states have internal predecessors, (76), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 79 [2022-01-31 22:55:57,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:55:57,141 INFO L225 Difference]: With dead ends: 96 [2022-01-31 22:55:57,141 INFO L226 Difference]: Without dead ends: 89 [2022-01-31 22:55:57,141 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2022-01-31 22:55:57,141 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 90 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:55:57,142 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 148 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:55:57,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-01-31 22:55:57,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 86. [2022-01-31 22:55:57,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 82 states have (on average 1.024390243902439) internal successors, (84), 82 states have internal predecessors, (84), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:57,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 87 transitions. [2022-01-31 22:55:57,147 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 87 transitions. Word has length 79 [2022-01-31 22:55:57,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:55:57,148 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 87 transitions. [2022-01-31 22:55:57,148 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.0) internal successors, (76), 18 states have internal predecessors, (76), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:57,148 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 87 transitions. [2022-01-31 22:55:57,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-31 22:55:57,148 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:55:57,149 INFO L514 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:55:57,149 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-31 22:55:57,149 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:55:57,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:55:57,149 INFO L85 PathProgramCache]: Analyzing trace with hash -685598890, now seen corresponding path program 7 times [2022-01-31 22:55:57,149 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:55:57,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [676359431] [2022-01-31 22:55:57,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:55:57,152 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:55:57,152 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:55:57,152 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:55:57,153 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:55:57,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:55:57,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:55:57,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:55:57,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:55:57,420 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:55:57,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [676359431] [2022-01-31 22:55:57,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [676359431] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:55:57,421 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:55:57,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-31 22:55:57,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211982349] [2022-01-31 22:55:57,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:55:57,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-31 22:55:57,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:55:57,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-31 22:55:57,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2022-01-31 22:55:57,422 INFO L87 Difference]: Start difference. First operand 86 states and 87 transitions. Second operand has 20 states, 20 states have (on average 4.05) internal successors, (81), 19 states have internal predecessors, (81), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:57,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:55:57,527 INFO L93 Difference]: Finished difference Result 101 states and 103 transitions. [2022-01-31 22:55:57,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-31 22:55:57,527 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.05) internal successors, (81), 19 states have internal predecessors, (81), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 84 [2022-01-31 22:55:57,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:55:57,528 INFO L225 Difference]: With dead ends: 101 [2022-01-31 22:55:57,528 INFO L226 Difference]: Without dead ends: 94 [2022-01-31 22:55:57,528 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2022-01-31 22:55:57,529 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 96 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:55:57,529 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 142 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:55:57,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-01-31 22:55:57,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 91. [2022-01-31 22:55:57,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 87 states have (on average 1.0229885057471264) internal successors, (89), 87 states have internal predecessors, (89), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:57,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 92 transitions. [2022-01-31 22:55:57,534 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 92 transitions. Word has length 84 [2022-01-31 22:55:57,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:55:57,535 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 92 transitions. [2022-01-31 22:55:57,535 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.05) internal successors, (81), 19 states have internal predecessors, (81), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:57,535 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 92 transitions. [2022-01-31 22:55:57,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-01-31 22:55:57,535 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:55:57,536 INFO L514 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:55:57,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-31 22:55:57,536 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:55:57,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:55:57,536 INFO L85 PathProgramCache]: Analyzing trace with hash -156802959, now seen corresponding path program 8 times [2022-01-31 22:55:57,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:55:57,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1406790408] [2022-01-31 22:55:57,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:55:57,538 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:55:57,539 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:55:57,539 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:55:57,540 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:55:57,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:55:57,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:55:57,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:55:57,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:55:57,847 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:55:57,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1406790408] [2022-01-31 22:55:57,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1406790408] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:55:57,847 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:55:57,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-31 22:55:57,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441215863] [2022-01-31 22:55:57,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:55:57,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-31 22:55:57,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:55:57,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-31 22:55:57,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2022-01-31 22:55:57,849 INFO L87 Difference]: Start difference. First operand 91 states and 92 transitions. Second operand has 21 states, 21 states have (on average 4.095238095238095) internal successors, (86), 20 states have internal predecessors, (86), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:57,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:55:57,972 INFO L93 Difference]: Finished difference Result 106 states and 108 transitions. [2022-01-31 22:55:57,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-31 22:55:57,972 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.095238095238095) internal successors, (86), 20 states have internal predecessors, (86), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 89 [2022-01-31 22:55:57,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:55:57,973 INFO L225 Difference]: With dead ends: 106 [2022-01-31 22:55:57,973 INFO L226 Difference]: Without dead ends: 99 [2022-01-31 22:55:57,973 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2022-01-31 22:55:57,974 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 138 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:55:57,974 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [138 Valid, 136 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:55:57,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2022-01-31 22:55:57,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 96. [2022-01-31 22:55:57,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 92 states have (on average 1.0217391304347827) internal successors, (94), 92 states have internal predecessors, (94), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:57,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 97 transitions. [2022-01-31 22:55:57,981 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 97 transitions. Word has length 89 [2022-01-31 22:55:57,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:55:57,981 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 97 transitions. [2022-01-31 22:55:57,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.095238095238095) internal successors, (86), 20 states have internal predecessors, (86), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:57,981 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 97 transitions. [2022-01-31 22:55:57,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-01-31 22:55:57,982 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:55:57,982 INFO L514 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:55:57,982 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-31 22:55:57,982 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:55:57,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:55:57,983 INFO L85 PathProgramCache]: Analyzing trace with hash 365629494, now seen corresponding path program 9 times [2022-01-31 22:55:57,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:55:57,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1379821584] [2022-01-31 22:55:57,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:55:57,993 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:55:57,994 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:55:57,994 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:55:57,995 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:55:58,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:55:58,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:55:58,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:55:58,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:55:58,327 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:55:58,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1379821584] [2022-01-31 22:55:58,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1379821584] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:55:58,327 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:55:58,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-31 22:55:58,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893505753] [2022-01-31 22:55:58,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:55:58,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-31 22:55:58,327 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:55:58,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-31 22:55:58,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2022-01-31 22:55:58,328 INFO L87 Difference]: Start difference. First operand 96 states and 97 transitions. Second operand has 22 states, 22 states have (on average 4.136363636363637) internal successors, (91), 21 states have internal predecessors, (91), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:58,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:55:58,448 INFO L93 Difference]: Finished difference Result 111 states and 113 transitions. [2022-01-31 22:55:58,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-31 22:55:58,448 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.136363636363637) internal successors, (91), 21 states have internal predecessors, (91), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 94 [2022-01-31 22:55:58,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:55:58,449 INFO L225 Difference]: With dead ends: 111 [2022-01-31 22:55:58,449 INFO L226 Difference]: Without dead ends: 104 [2022-01-31 22:55:58,449 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2022-01-31 22:55:58,449 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 156 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:55:58,450 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [156 Valid, 143 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:55:58,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2022-01-31 22:55:58,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 101. [2022-01-31 22:55:58,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 97 states have (on average 1.0206185567010309) internal successors, (99), 97 states have internal predecessors, (99), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:58,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 102 transitions. [2022-01-31 22:55:58,456 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 102 transitions. Word has length 94 [2022-01-31 22:55:58,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:55:58,457 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 102 transitions. [2022-01-31 22:55:58,457 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.136363636363637) internal successors, (91), 21 states have internal predecessors, (91), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:58,457 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 102 transitions. [2022-01-31 22:55:58,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-31 22:55:58,457 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:55:58,457 INFO L514 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:55:58,457 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-31 22:55:58,457 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:55:58,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:55:58,458 INFO L85 PathProgramCache]: Analyzing trace with hash -456690799, now seen corresponding path program 10 times [2022-01-31 22:55:58,458 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:55:58,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1277246719] [2022-01-31 22:55:58,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:55:58,461 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:55:58,461 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:55:58,462 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:55:58,463 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:55:58,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:55:58,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:55:58,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:55:58,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:55:58,776 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:55:58,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1277246719] [2022-01-31 22:55:58,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1277246719] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:55:58,776 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:55:58,777 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-01-31 22:55:58,777 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352677265] [2022-01-31 22:55:58,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:55:58,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-01-31 22:55:58,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:55:58,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-01-31 22:55:58,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2022-01-31 22:55:58,778 INFO L87 Difference]: Start difference. First operand 101 states and 102 transitions. Second operand has 23 states, 23 states have (on average 4.173913043478261) internal successors, (96), 22 states have internal predecessors, (96), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:58,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:55:58,916 INFO L93 Difference]: Finished difference Result 116 states and 118 transitions. [2022-01-31 22:55:58,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-31 22:55:58,916 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.173913043478261) internal successors, (96), 22 states have internal predecessors, (96), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 99 [2022-01-31 22:55:58,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:55:58,917 INFO L225 Difference]: With dead ends: 116 [2022-01-31 22:55:58,917 INFO L226 Difference]: Without dead ends: 109 [2022-01-31 22:55:58,917 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2022-01-31 22:55:58,918 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 123 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:55:58,918 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 184 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:55:58,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2022-01-31 22:55:58,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 106. [2022-01-31 22:55:58,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 102 states have (on average 1.0196078431372548) internal successors, (104), 102 states have internal predecessors, (104), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:58,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 107 transitions. [2022-01-31 22:55:58,924 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 107 transitions. Word has length 99 [2022-01-31 22:55:58,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:55:58,924 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 107 transitions. [2022-01-31 22:55:58,925 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.173913043478261) internal successors, (96), 22 states have internal predecessors, (96), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:58,925 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 107 transitions. [2022-01-31 22:55:58,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-01-31 22:55:58,925 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:55:58,925 INFO L514 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:55:58,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-31 22:55:58,925 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:55:58,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:55:58,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1638272746, now seen corresponding path program 11 times [2022-01-31 22:55:58,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:55:58,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1012194420] [2022-01-31 22:55:58,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:55:58,928 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:55:58,928 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:55:58,928 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:55:58,929 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:55:58,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:55:59,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:55:59,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:55:59,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:55:59,254 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:55:59,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1012194420] [2022-01-31 22:55:59,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1012194420] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:55:59,254 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:55:59,254 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-01-31 22:55:59,254 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157204873] [2022-01-31 22:55:59,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:55:59,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-31 22:55:59,254 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:55:59,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-31 22:55:59,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2022-01-31 22:55:59,255 INFO L87 Difference]: Start difference. First operand 106 states and 107 transitions. Second operand has 24 states, 24 states have (on average 4.208333333333333) internal successors, (101), 23 states have internal predecessors, (101), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:59,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:55:59,370 INFO L93 Difference]: Finished difference Result 121 states and 123 transitions. [2022-01-31 22:55:59,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-31 22:55:59,370 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.208333333333333) internal successors, (101), 23 states have internal predecessors, (101), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 104 [2022-01-31 22:55:59,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:55:59,371 INFO L225 Difference]: With dead ends: 121 [2022-01-31 22:55:59,371 INFO L226 Difference]: Without dead ends: 114 [2022-01-31 22:55:59,371 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2022-01-31 22:55:59,372 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 111 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:55:59,372 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 138 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:55:59,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2022-01-31 22:55:59,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 111. [2022-01-31 22:55:59,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 107 states have (on average 1.0186915887850467) internal successors, (109), 107 states have internal predecessors, (109), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:59,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 112 transitions. [2022-01-31 22:55:59,379 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 112 transitions. Word has length 104 [2022-01-31 22:55:59,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:55:59,379 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 112 transitions. [2022-01-31 22:55:59,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.208333333333333) internal successors, (101), 23 states have internal predecessors, (101), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:59,379 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 112 transitions. [2022-01-31 22:55:59,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-01-31 22:55:59,380 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:55:59,380 INFO L514 BasicCegarLoop]: trace histogram [13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:55:59,380 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-31 22:55:59,380 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:55:59,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:55:59,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1086463665, now seen corresponding path program 12 times [2022-01-31 22:55:59,381 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:55:59,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1084883632] [2022-01-31 22:55:59,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:55:59,383 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:55:59,383 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:55:59,383 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:55:59,384 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:55:59,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:55:59,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:55:59,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:55:59,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:55:59,736 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:55:59,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1084883632] [2022-01-31 22:55:59,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1084883632] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:55:59,736 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:55:59,736 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-01-31 22:55:59,736 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981019629] [2022-01-31 22:55:59,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:55:59,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-31 22:55:59,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:55:59,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-31 22:55:59,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2022-01-31 22:55:59,737 INFO L87 Difference]: Start difference. First operand 111 states and 112 transitions. Second operand has 25 states, 25 states have (on average 4.24) internal successors, (106), 24 states have internal predecessors, (106), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:59,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:55:59,858 INFO L93 Difference]: Finished difference Result 126 states and 128 transitions. [2022-01-31 22:55:59,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-01-31 22:55:59,859 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.24) internal successors, (106), 24 states have internal predecessors, (106), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 109 [2022-01-31 22:55:59,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:55:59,859 INFO L225 Difference]: With dead ends: 126 [2022-01-31 22:55:59,859 INFO L226 Difference]: Without dead ends: 119 [2022-01-31 22:55:59,860 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2022-01-31 22:55:59,860 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 120 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:55:59,860 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [120 Valid, 179 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:55:59,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2022-01-31 22:55:59,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 116. [2022-01-31 22:55:59,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 112 states have (on average 1.0178571428571428) internal successors, (114), 112 states have internal predecessors, (114), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:59,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 117 transitions. [2022-01-31 22:55:59,868 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 117 transitions. Word has length 109 [2022-01-31 22:55:59,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:55:59,869 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 117 transitions. [2022-01-31 22:55:59,869 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.24) internal successors, (106), 24 states have internal predecessors, (106), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:59,869 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 117 transitions. [2022-01-31 22:55:59,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-01-31 22:55:59,869 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:55:59,869 INFO L514 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:55:59,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-31 22:55:59,870 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:55:59,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:55:59,870 INFO L85 PathProgramCache]: Analyzing trace with hash -1309853194, now seen corresponding path program 13 times [2022-01-31 22:55:59,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:55:59,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1433608278] [2022-01-31 22:55:59,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:55:59,873 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:55:59,873 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:55:59,873 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:55:59,874 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:55:59,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:00,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:56:00,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:00,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:56:00,276 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:56:00,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1433608278] [2022-01-31 22:56:00,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1433608278] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:56:00,277 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:56:00,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-01-31 22:56:00,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750663678] [2022-01-31 22:56:00,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:56:00,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-31 22:56:00,277 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:56:00,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-31 22:56:00,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2022-01-31 22:56:00,278 INFO L87 Difference]: Start difference. First operand 116 states and 117 transitions. Second operand has 26 states, 26 states have (on average 4.269230769230769) internal successors, (111), 25 states have internal predecessors, (111), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:00,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:56:00,396 INFO L93 Difference]: Finished difference Result 131 states and 133 transitions. [2022-01-31 22:56:00,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-01-31 22:56:00,396 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.269230769230769) internal successors, (111), 25 states have internal predecessors, (111), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 114 [2022-01-31 22:56:00,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:56:00,397 INFO L225 Difference]: With dead ends: 131 [2022-01-31 22:56:00,397 INFO L226 Difference]: Without dead ends: 124 [2022-01-31 22:56:00,397 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2022-01-31 22:56:00,397 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 123 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:56:00,398 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 187 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:56:00,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2022-01-31 22:56:00,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 121. [2022-01-31 22:56:00,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 117 states have (on average 1.017094017094017) internal successors, (119), 117 states have internal predecessors, (119), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:00,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 122 transitions. [2022-01-31 22:56:00,407 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 122 transitions. Word has length 114 [2022-01-31 22:56:00,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:56:00,407 INFO L470 AbstractCegarLoop]: Abstraction has 121 states and 122 transitions. [2022-01-31 22:56:00,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.269230769230769) internal successors, (111), 25 states have internal predecessors, (111), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:00,407 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 122 transitions. [2022-01-31 22:56:00,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-01-31 22:56:00,408 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:56:00,408 INFO L514 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:56:00,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-31 22:56:00,408 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:56:00,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:56:00,409 INFO L85 PathProgramCache]: Analyzing trace with hash -868654639, now seen corresponding path program 14 times [2022-01-31 22:56:00,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:56:00,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1317710212] [2022-01-31 22:56:00,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:56:00,412 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:56:00,412 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:56:00,412 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:56:00,413 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:56:00,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:00,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:56:00,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:00,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:56:00,764 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:56:00,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1317710212] [2022-01-31 22:56:00,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1317710212] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:56:00,764 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:56:00,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-01-31 22:56:00,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780641608] [2022-01-31 22:56:00,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:56:00,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-31 22:56:00,765 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:56:00,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-31 22:56:00,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2022-01-31 22:56:00,765 INFO L87 Difference]: Start difference. First operand 121 states and 122 transitions. Second operand has 27 states, 27 states have (on average 4.296296296296297) internal successors, (116), 26 states have internal predecessors, (116), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:00,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:56:00,893 INFO L93 Difference]: Finished difference Result 136 states and 138 transitions. [2022-01-31 22:56:00,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-31 22:56:00,893 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.296296296296297) internal successors, (116), 26 states have internal predecessors, (116), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 119 [2022-01-31 22:56:00,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:56:00,894 INFO L225 Difference]: With dead ends: 136 [2022-01-31 22:56:00,894 INFO L226 Difference]: Without dead ends: 129 [2022-01-31 22:56:00,894 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2022-01-31 22:56:00,895 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 156 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:56:00,895 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [156 Valid, 140 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:56:00,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2022-01-31 22:56:00,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 126. [2022-01-31 22:56:00,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 122 states have (on average 1.0163934426229508) internal successors, (124), 122 states have internal predecessors, (124), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:00,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 127 transitions. [2022-01-31 22:56:00,904 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 127 transitions. Word has length 119 [2022-01-31 22:56:00,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:56:00,905 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 127 transitions. [2022-01-31 22:56:00,905 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.296296296296297) internal successors, (116), 26 states have internal predecessors, (116), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:00,905 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 127 transitions. [2022-01-31 22:56:00,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-31 22:56:00,905 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:56:00,906 INFO L514 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:56:00,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-31 22:56:00,906 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:56:00,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:56:00,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1143139030, now seen corresponding path program 15 times [2022-01-31 22:56:00,906 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:56:00,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1753247501] [2022-01-31 22:56:00,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:56:00,908 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:56:00,908 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:56:00,908 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:56:00,910 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:56:00,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:01,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:56:01,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:01,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:56:01,300 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:56:01,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1753247501] [2022-01-31 22:56:01,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1753247501] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:56:01,300 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:56:01,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-01-31 22:56:01,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690337734] [2022-01-31 22:56:01,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:56:01,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-31 22:56:01,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:56:01,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-31 22:56:01,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2022-01-31 22:56:01,301 INFO L87 Difference]: Start difference. First operand 126 states and 127 transitions. Second operand has 28 states, 28 states have (on average 4.321428571428571) internal successors, (121), 27 states have internal predecessors, (121), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:01,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:56:01,432 INFO L93 Difference]: Finished difference Result 141 states and 143 transitions. [2022-01-31 22:56:01,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-31 22:56:01,433 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.321428571428571) internal successors, (121), 27 states have internal predecessors, (121), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 124 [2022-01-31 22:56:01,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:56:01,433 INFO L225 Difference]: With dead ends: 141 [2022-01-31 22:56:01,433 INFO L226 Difference]: Without dead ends: 134 [2022-01-31 22:56:01,434 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2022-01-31 22:56:01,434 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 111 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:56:01,434 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 211 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:56:01,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2022-01-31 22:56:01,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 131. [2022-01-31 22:56:01,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 127 states have (on average 1.015748031496063) internal successors, (129), 127 states have internal predecessors, (129), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:01,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 132 transitions. [2022-01-31 22:56:01,444 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 132 transitions. Word has length 124 [2022-01-31 22:56:01,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:56:01,444 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 132 transitions. [2022-01-31 22:56:01,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 4.321428571428571) internal successors, (121), 27 states have internal predecessors, (121), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:01,445 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 132 transitions. [2022-01-31 22:56:01,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-01-31 22:56:01,445 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:56:01,445 INFO L514 BasicCegarLoop]: trace histogram [17, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:56:01,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-31 22:56:01,446 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:56:01,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:56:01,446 INFO L85 PathProgramCache]: Analyzing trace with hash 642727153, now seen corresponding path program 16 times [2022-01-31 22:56:01,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:56:01,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [212750687] [2022-01-31 22:56:01,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:56:01,448 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:56:01,448 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:56:01,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:56:01,450 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:56:01,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:01,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:56:01,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:01,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:56:01,868 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:56:01,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [212750687] [2022-01-31 22:56:01,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [212750687] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:56:01,868 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:56:01,868 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2022-01-31 22:56:01,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362392747] [2022-01-31 22:56:01,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:56:01,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-01-31 22:56:01,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:56:01,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-01-31 22:56:01,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2022-01-31 22:56:01,869 INFO L87 Difference]: Start difference. First operand 131 states and 132 transitions. Second operand has 29 states, 29 states have (on average 4.344827586206897) internal successors, (126), 28 states have internal predecessors, (126), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:02,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:56:02,032 INFO L93 Difference]: Finished difference Result 146 states and 148 transitions. [2022-01-31 22:56:02,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-31 22:56:02,032 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.344827586206897) internal successors, (126), 28 states have internal predecessors, (126), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 129 [2022-01-31 22:56:02,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:56:02,033 INFO L225 Difference]: With dead ends: 146 [2022-01-31 22:56:02,033 INFO L226 Difference]: Without dead ends: 139 [2022-01-31 22:56:02,034 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2022-01-31 22:56:02,034 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 156 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:56:02,034 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [156 Valid, 192 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:56:02,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2022-01-31 22:56:02,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 136. [2022-01-31 22:56:02,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 132 states have (on average 1.0151515151515151) internal successors, (134), 132 states have internal predecessors, (134), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:02,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 137 transitions. [2022-01-31 22:56:02,045 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 137 transitions. Word has length 129 [2022-01-31 22:56:02,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:56:02,045 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 137 transitions. [2022-01-31 22:56:02,045 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 4.344827586206897) internal successors, (126), 28 states have internal predecessors, (126), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:02,045 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 137 transitions. [2022-01-31 22:56:02,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-01-31 22:56:02,046 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:56:02,046 INFO L514 BasicCegarLoop]: trace histogram [18, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:56:02,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-31 22:56:02,046 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:56:02,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:56:02,047 INFO L85 PathProgramCache]: Analyzing trace with hash -619117642, now seen corresponding path program 17 times [2022-01-31 22:56:02,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:56:02,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [545254990] [2022-01-31 22:56:02,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:56:02,049 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:56:02,049 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:56:02,049 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:56:02,051 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:56:02,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:02,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:56:02,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:02,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:56:02,550 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:56:02,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [545254990] [2022-01-31 22:56:02,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [545254990] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:56:02,550 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:56:02,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-01-31 22:56:02,550 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352063974] [2022-01-31 22:56:02,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:56:02,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-01-31 22:56:02,551 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:56:02,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-01-31 22:56:02,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2022-01-31 22:56:02,552 INFO L87 Difference]: Start difference. First operand 136 states and 137 transitions. Second operand has 30 states, 30 states have (on average 4.366666666666666) internal successors, (131), 29 states have internal predecessors, (131), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:02,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:56:02,713 INFO L93 Difference]: Finished difference Result 151 states and 153 transitions. [2022-01-31 22:56:02,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-31 22:56:02,713 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.366666666666666) internal successors, (131), 29 states have internal predecessors, (131), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 134 [2022-01-31 22:56:02,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:56:02,714 INFO L225 Difference]: With dead ends: 151 [2022-01-31 22:56:02,714 INFO L226 Difference]: Without dead ends: 144 [2022-01-31 22:56:02,715 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2022-01-31 22:56:02,715 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 177 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:56:02,717 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [177 Valid, 169 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:56:02,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2022-01-31 22:56:02,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 141. [2022-01-31 22:56:02,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 137 states have (on average 1.0145985401459854) internal successors, (139), 137 states have internal predecessors, (139), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:02,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 142 transitions. [2022-01-31 22:56:02,739 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 142 transitions. Word has length 134 [2022-01-31 22:56:02,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:56:02,740 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 142 transitions. [2022-01-31 22:56:02,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 4.366666666666666) internal successors, (131), 29 states have internal predecessors, (131), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:02,740 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 142 transitions. [2022-01-31 22:56:02,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-01-31 22:56:02,741 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:56:02,741 INFO L514 BasicCegarLoop]: trace histogram [19, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:56:02,741 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-31 22:56:02,741 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:56:02,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:56:02,742 INFO L85 PathProgramCache]: Analyzing trace with hash -341463023, now seen corresponding path program 18 times [2022-01-31 22:56:02,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:56:02,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [907053164] [2022-01-31 22:56:02,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:56:02,747 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:56:02,747 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:56:02,748 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:56:02,749 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:56:02,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:03,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:56:03,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:03,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:56:03,208 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:56:03,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [907053164] [2022-01-31 22:56:03,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [907053164] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:56:03,208 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:56:03,208 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2022-01-31 22:56:03,208 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820551051] [2022-01-31 22:56:03,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:56:03,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-31 22:56:03,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:56:03,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-31 22:56:03,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2022-01-31 22:56:03,209 INFO L87 Difference]: Start difference. First operand 141 states and 142 transitions. Second operand has 31 states, 31 states have (on average 4.387096774193548) internal successors, (136), 30 states have internal predecessors, (136), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:03,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:56:03,346 INFO L93 Difference]: Finished difference Result 156 states and 158 transitions. [2022-01-31 22:56:03,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-01-31 22:56:03,346 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.387096774193548) internal successors, (136), 30 states have internal predecessors, (136), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 139 [2022-01-31 22:56:03,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:56:03,347 INFO L225 Difference]: With dead ends: 156 [2022-01-31 22:56:03,347 INFO L226 Difference]: Without dead ends: 149 [2022-01-31 22:56:03,348 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2022-01-31 22:56:03,348 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 147 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:56:03,349 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [147 Valid, 177 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:56:03,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2022-01-31 22:56:03,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 146. [2022-01-31 22:56:03,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 142 states have (on average 1.0140845070422535) internal successors, (144), 142 states have internal predecessors, (144), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:03,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 147 transitions. [2022-01-31 22:56:03,362 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 147 transitions. Word has length 139 [2022-01-31 22:56:03,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:56:03,362 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 147 transitions. [2022-01-31 22:56:03,362 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.387096774193548) internal successors, (136), 30 states have internal predecessors, (136), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:03,362 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 147 transitions. [2022-01-31 22:56:03,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-01-31 22:56:03,363 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:56:03,363 INFO L514 BasicCegarLoop]: trace histogram [20, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:56:03,363 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-31 22:56:03,363 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:56:03,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:56:03,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1869448342, now seen corresponding path program 19 times [2022-01-31 22:56:03,364 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:56:03,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2085915227] [2022-01-31 22:56:03,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:56:03,368 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:56:03,368 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:56:03,368 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:56:03,369 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:56:03,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:03,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:56:03,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:03,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:56:03,880 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:56:03,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2085915227] [2022-01-31 22:56:03,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2085915227] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:56:03,880 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:56:03,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-01-31 22:56:03,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991799] [2022-01-31 22:56:03,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:56:03,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-31 22:56:03,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:56:03,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-31 22:56:03,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2022-01-31 22:56:03,882 INFO L87 Difference]: Start difference. First operand 146 states and 147 transitions. Second operand has 32 states, 32 states have (on average 4.40625) internal successors, (141), 31 states have internal predecessors, (141), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:04,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:56:04,017 INFO L93 Difference]: Finished difference Result 161 states and 163 transitions. [2022-01-31 22:56:04,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-01-31 22:56:04,018 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.40625) internal successors, (141), 31 states have internal predecessors, (141), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 144 [2022-01-31 22:56:04,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:56:04,019 INFO L225 Difference]: With dead ends: 161 [2022-01-31 22:56:04,019 INFO L226 Difference]: Without dead ends: 154 [2022-01-31 22:56:04,020 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2022-01-31 22:56:04,020 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 138 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:56:04,020 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [138 Valid, 200 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:56:04,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2022-01-31 22:56:04,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 151. [2022-01-31 22:56:04,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 147 states have (on average 1.0136054421768708) internal successors, (149), 147 states have internal predecessors, (149), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:04,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 152 transitions. [2022-01-31 22:56:04,034 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 152 transitions. Word has length 144 [2022-01-31 22:56:04,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:56:04,034 INFO L470 AbstractCegarLoop]: Abstraction has 151 states and 152 transitions. [2022-01-31 22:56:04,034 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.40625) internal successors, (141), 31 states have internal predecessors, (141), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:04,034 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 152 transitions. [2022-01-31 22:56:04,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-01-31 22:56:04,035 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:56:04,035 INFO L514 BasicCegarLoop]: trace histogram [21, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:56:04,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-31 22:56:04,035 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:56:04,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:56:04,036 INFO L85 PathProgramCache]: Analyzing trace with hash -698434767, now seen corresponding path program 20 times [2022-01-31 22:56:04,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:56:04,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1681054049] [2022-01-31 22:56:04,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:56:04,038 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:56:04,038 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:56:04,039 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:56:04,040 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:56:04,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:04,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:56:04,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:04,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:56:04,536 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:56:04,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1681054049] [2022-01-31 22:56:04,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1681054049] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:56:04,536 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:56:04,536 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-01-31 22:56:04,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216523168] [2022-01-31 22:56:04,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:56:04,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-31 22:56:04,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:56:04,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-31 22:56:04,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2022-01-31 22:56:04,539 INFO L87 Difference]: Start difference. First operand 151 states and 152 transitions. Second operand has 33 states, 33 states have (on average 4.424242424242424) internal successors, (146), 32 states have internal predecessors, (146), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:04,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:56:04,671 INFO L93 Difference]: Finished difference Result 166 states and 168 transitions. [2022-01-31 22:56:04,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-01-31 22:56:04,671 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.424242424242424) internal successors, (146), 32 states have internal predecessors, (146), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 149 [2022-01-31 22:56:04,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:56:04,672 INFO L225 Difference]: With dead ends: 166 [2022-01-31 22:56:04,672 INFO L226 Difference]: Without dead ends: 159 [2022-01-31 22:56:04,672 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2022-01-31 22:56:04,673 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 147 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:56:04,674 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [147 Valid, 175 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:56:04,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2022-01-31 22:56:04,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 156. [2022-01-31 22:56:04,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 152 states have (on average 1.013157894736842) internal successors, (154), 152 states have internal predecessors, (154), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:04,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 157 transitions. [2022-01-31 22:56:04,688 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 157 transitions. Word has length 149 [2022-01-31 22:56:04,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:56:04,689 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 157 transitions. [2022-01-31 22:56:04,689 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.424242424242424) internal successors, (146), 32 states have internal predecessors, (146), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:04,689 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 157 transitions. [2022-01-31 22:56:04,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-01-31 22:56:04,690 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:56:04,690 INFO L514 BasicCegarLoop]: trace histogram [22, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:56:04,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-31 22:56:04,690 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:56:04,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:56:04,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1279159670, now seen corresponding path program 21 times [2022-01-31 22:56:04,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:56:04,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [38450633] [2022-01-31 22:56:04,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:56:04,694 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:56:04,694 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:56:04,694 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:56:04,696 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:56:04,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:05,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:56:05,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:05,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:56:05,176 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:56:05,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [38450633] [2022-01-31 22:56:05,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [38450633] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:56:05,176 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:56:05,176 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2022-01-31 22:56:05,177 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236065730] [2022-01-31 22:56:05,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:56:05,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-31 22:56:05,177 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:56:05,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-31 22:56:05,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2022-01-31 22:56:05,178 INFO L87 Difference]: Start difference. First operand 156 states and 157 transitions. Second operand has 34 states, 34 states have (on average 4.4411764705882355) internal successors, (151), 33 states have internal predecessors, (151), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:05,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:56:05,311 INFO L93 Difference]: Finished difference Result 171 states and 173 transitions. [2022-01-31 22:56:05,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-01-31 22:56:05,311 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 4.4411764705882355) internal successors, (151), 33 states have internal predecessors, (151), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 154 [2022-01-31 22:56:05,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:56:05,312 INFO L225 Difference]: With dead ends: 171 [2022-01-31 22:56:05,312 INFO L226 Difference]: Without dead ends: 164 [2022-01-31 22:56:05,312 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2022-01-31 22:56:05,312 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 171 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:56:05,313 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [171 Valid, 229 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:56:05,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2022-01-31 22:56:05,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 161. [2022-01-31 22:56:05,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 157 states have (on average 1.0127388535031847) internal successors, (159), 157 states have internal predecessors, (159), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:05,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 162 transitions. [2022-01-31 22:56:05,347 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 162 transitions. Word has length 154 [2022-01-31 22:56:05,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:56:05,347 INFO L470 AbstractCegarLoop]: Abstraction has 161 states and 162 transitions. [2022-01-31 22:56:05,348 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.4411764705882355) internal successors, (151), 33 states have internal predecessors, (151), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:05,348 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 162 transitions. [2022-01-31 22:56:05,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-01-31 22:56:05,349 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:56:05,349 INFO L514 BasicCegarLoop]: trace histogram [23, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:56:05,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-31 22:56:05,349 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:56:05,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:56:05,350 INFO L85 PathProgramCache]: Analyzing trace with hash -568566191, now seen corresponding path program 22 times [2022-01-31 22:56:05,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:56:05,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [440462345] [2022-01-31 22:56:05,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:56:05,352 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:56:05,352 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:56:05,353 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:56:05,354 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:56:05,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:05,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:56:05,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:05,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:56:05,783 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:56:05,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [440462345] [2022-01-31 22:56:05,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [440462345] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:56:05,783 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:56:05,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2022-01-31 22:56:05,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027263043] [2022-01-31 22:56:05,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:56:05,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-01-31 22:56:05,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:56:05,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-01-31 22:56:05,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2022-01-31 22:56:05,785 INFO L87 Difference]: Start difference. First operand 161 states and 162 transitions. Second operand has 35 states, 35 states have (on average 4.457142857142857) internal successors, (156), 34 states have internal predecessors, (156), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:05,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:56:05,935 INFO L93 Difference]: Finished difference Result 176 states and 178 transitions. [2022-01-31 22:56:05,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-31 22:56:05,935 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 4.457142857142857) internal successors, (156), 34 states have internal predecessors, (156), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 159 [2022-01-31 22:56:05,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:56:05,936 INFO L225 Difference]: With dead ends: 176 [2022-01-31 22:56:05,936 INFO L226 Difference]: Without dead ends: 169 [2022-01-31 22:56:05,936 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2022-01-31 22:56:05,937 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 156 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:56:05,937 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [156 Valid, 205 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:56:05,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2022-01-31 22:56:05,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 166. [2022-01-31 22:56:05,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 162 states have (on average 1.0123456790123457) internal successors, (164), 162 states have internal predecessors, (164), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:05,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 167 transitions. [2022-01-31 22:56:05,953 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 167 transitions. Word has length 159 [2022-01-31 22:56:05,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:56:05,953 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 167 transitions. [2022-01-31 22:56:05,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 4.457142857142857) internal successors, (156), 34 states have internal predecessors, (156), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:05,953 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 167 transitions. [2022-01-31 22:56:05,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-01-31 22:56:05,954 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:56:05,954 INFO L514 BasicCegarLoop]: trace histogram [24, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:56:05,954 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-31 22:56:05,954 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:56:05,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:56:05,954 INFO L85 PathProgramCache]: Analyzing trace with hash -282476970, now seen corresponding path program 23 times [2022-01-31 22:56:05,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:56:05,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1321314111] [2022-01-31 22:56:05,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:56:05,957 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:56:05,957 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:56:05,958 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:56:05,959 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:56:05,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:06,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:56:06,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:06,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:56:06,489 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:56:06,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1321314111] [2022-01-31 22:56:06,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1321314111] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:56:06,489 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:56:06,489 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2022-01-31 22:56:06,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309290785] [2022-01-31 22:56:06,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:56:06,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-31 22:56:06,490 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:56:06,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-31 22:56:06,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2022-01-31 22:56:06,490 INFO L87 Difference]: Start difference. First operand 166 states and 167 transitions. Second operand has 36 states, 36 states have (on average 4.472222222222222) internal successors, (161), 35 states have internal predecessors, (161), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:06,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:56:06,644 INFO L93 Difference]: Finished difference Result 181 states and 183 transitions. [2022-01-31 22:56:06,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-31 22:56:06,645 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 4.472222222222222) internal successors, (161), 35 states have internal predecessors, (161), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 164 [2022-01-31 22:56:06,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:56:06,646 INFO L225 Difference]: With dead ends: 181 [2022-01-31 22:56:06,646 INFO L226 Difference]: Without dead ends: 174 [2022-01-31 22:56:06,646 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2022-01-31 22:56:06,647 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 153 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:56:06,647 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [153 Valid, 233 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:56:06,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2022-01-31 22:56:06,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 171. [2022-01-31 22:56:06,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 167 states have (on average 1.0119760479041917) internal successors, (169), 167 states have internal predecessors, (169), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:06,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 172 transitions. [2022-01-31 22:56:06,665 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 172 transitions. Word has length 164 [2022-01-31 22:56:06,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:56:06,666 INFO L470 AbstractCegarLoop]: Abstraction has 171 states and 172 transitions. [2022-01-31 22:56:06,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 4.472222222222222) internal successors, (161), 35 states have internal predecessors, (161), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:06,675 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 172 transitions. [2022-01-31 22:56:06,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-01-31 22:56:06,676 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:56:06,676 INFO L514 BasicCegarLoop]: trace histogram [25, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:56:06,676 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-31 22:56:06,676 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:56:06,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:56:06,677 INFO L85 PathProgramCache]: Analyzing trace with hash 1476434289, now seen corresponding path program 24 times [2022-01-31 22:56:06,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:56:06,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [325242944] [2022-01-31 22:56:06,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:56:06,680 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:56:06,680 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:56:06,680 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:56:06,682 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:56:06,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:07,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:56:07,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:07,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:56:07,200 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:56:07,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [325242944] [2022-01-31 22:56:07,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [325242944] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:56:07,200 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:56:07,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2022-01-31 22:56:07,200 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140019053] [2022-01-31 22:56:07,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:56:07,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-31 22:56:07,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:56:07,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-31 22:56:07,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2022-01-31 22:56:07,202 INFO L87 Difference]: Start difference. First operand 171 states and 172 transitions. Second operand has 37 states, 37 states have (on average 4.486486486486487) internal successors, (166), 36 states have internal predecessors, (166), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:07,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:56:07,359 INFO L93 Difference]: Finished difference Result 186 states and 188 transitions. [2022-01-31 22:56:07,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-31 22:56:07,359 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 4.486486486486487) internal successors, (166), 36 states have internal predecessors, (166), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 169 [2022-01-31 22:56:07,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:56:07,360 INFO L225 Difference]: With dead ends: 186 [2022-01-31 22:56:07,360 INFO L226 Difference]: Without dead ends: 179 [2022-01-31 22:56:07,361 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2022-01-31 22:56:07,361 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 156 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:56:07,361 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [156 Valid, 201 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:56:07,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2022-01-31 22:56:07,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 176. [2022-01-31 22:56:07,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 172 states have (on average 1.0116279069767442) internal successors, (174), 172 states have internal predecessors, (174), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:07,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 177 transitions. [2022-01-31 22:56:07,379 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 177 transitions. Word has length 169 [2022-01-31 22:56:07,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:56:07,379 INFO L470 AbstractCegarLoop]: Abstraction has 176 states and 177 transitions. [2022-01-31 22:56:07,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 4.486486486486487) internal successors, (166), 36 states have internal predecessors, (166), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:07,379 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 177 transitions. [2022-01-31 22:56:07,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-01-31 22:56:07,380 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:56:07,380 INFO L514 BasicCegarLoop]: trace histogram [26, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:56:07,380 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-01-31 22:56:07,380 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:56:07,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:56:07,380 INFO L85 PathProgramCache]: Analyzing trace with hash -397576394, now seen corresponding path program 25 times [2022-01-31 22:56:07,381 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:56:07,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1153663305] [2022-01-31 22:56:07,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:56:07,383 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:56:07,383 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:56:07,383 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:56:07,385 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:56:07,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:07,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:56:07,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:07,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:56:07,978 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:56:07,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1153663305] [2022-01-31 22:56:07,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1153663305] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:56:07,979 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:56:07,979 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [38] imperfect sequences [] total 38 [2022-01-31 22:56:07,979 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938599360] [2022-01-31 22:56:07,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:56:07,979 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-31 22:56:07,979 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:56:07,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-31 22:56:07,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2022-01-31 22:56:07,981 INFO L87 Difference]: Start difference. First operand 176 states and 177 transitions. Second operand has 38 states, 38 states have (on average 4.5) internal successors, (171), 37 states have internal predecessors, (171), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:08,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:56:08,146 INFO L93 Difference]: Finished difference Result 191 states and 193 transitions. [2022-01-31 22:56:08,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-31 22:56:08,147 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 4.5) internal successors, (171), 37 states have internal predecessors, (171), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 174 [2022-01-31 22:56:08,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:56:08,148 INFO L225 Difference]: With dead ends: 191 [2022-01-31 22:56:08,148 INFO L226 Difference]: Without dead ends: 184 [2022-01-31 22:56:08,148 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2022-01-31 22:56:08,149 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 231 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:56:08,149 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [231 Valid, 204 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:56:08,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2022-01-31 22:56:08,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 181. [2022-01-31 22:56:08,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 177 states have (on average 1.0112994350282485) internal successors, (179), 177 states have internal predecessors, (179), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:08,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 182 transitions. [2022-01-31 22:56:08,168 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 182 transitions. Word has length 174 [2022-01-31 22:56:08,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:56:08,168 INFO L470 AbstractCegarLoop]: Abstraction has 181 states and 182 transitions. [2022-01-31 22:56:08,168 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 4.5) internal successors, (171), 37 states have internal predecessors, (171), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:08,168 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 182 transitions. [2022-01-31 22:56:08,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-31 22:56:08,169 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:56:08,169 INFO L514 BasicCegarLoop]: trace histogram [27, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:56:08,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-01-31 22:56:08,169 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:56:08,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:56:08,169 INFO L85 PathProgramCache]: Analyzing trace with hash 380464273, now seen corresponding path program 26 times [2022-01-31 22:56:08,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:56:08,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [361593875] [2022-01-31 22:56:08,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:56:08,172 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:56:08,172 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:56:08,172 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:56:08,174 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:56:08,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:08,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:56:08,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:08,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:56:08,818 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:56:08,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [361593875] [2022-01-31 22:56:08,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [361593875] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:56:08,819 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:56:08,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [39] imperfect sequences [] total 39 [2022-01-31 22:56:08,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248917246] [2022-01-31 22:56:08,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:56:08,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-01-31 22:56:08,819 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:56:08,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-01-31 22:56:08,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2022-01-31 22:56:08,820 INFO L87 Difference]: Start difference. First operand 181 states and 182 transitions. Second operand has 39 states, 39 states have (on average 4.512820512820513) internal successors, (176), 38 states have internal predecessors, (176), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:08,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:56:08,976 INFO L93 Difference]: Finished difference Result 196 states and 198 transitions. [2022-01-31 22:56:08,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-31 22:56:08,977 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 4.512820512820513) internal successors, (176), 38 states have internal predecessors, (176), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 179 [2022-01-31 22:56:08,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:56:08,978 INFO L225 Difference]: With dead ends: 196 [2022-01-31 22:56:08,978 INFO L226 Difference]: Without dead ends: 189 [2022-01-31 22:56:08,979 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2022-01-31 22:56:08,980 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 159 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:56:08,980 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [159 Valid, 183 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:56:08,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2022-01-31 22:56:09,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 186. [2022-01-31 22:56:09,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 182 states have (on average 1.010989010989011) internal successors, (184), 182 states have internal predecessors, (184), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:09,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 187 transitions. [2022-01-31 22:56:09,024 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 187 transitions. Word has length 179 [2022-01-31 22:56:09,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:56:09,024 INFO L470 AbstractCegarLoop]: Abstraction has 186 states and 187 transitions. [2022-01-31 22:56:09,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 4.512820512820513) internal successors, (176), 38 states have internal predecessors, (176), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:09,024 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 187 transitions. [2022-01-31 22:56:09,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2022-01-31 22:56:09,025 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:56:09,025 INFO L514 BasicCegarLoop]: trace histogram [28, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:56:09,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-01-31 22:56:09,025 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:56:09,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:56:09,025 INFO L85 PathProgramCache]: Analyzing trace with hash -1169713130, now seen corresponding path program 27 times [2022-01-31 22:56:09,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:56:09,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1485314980] [2022-01-31 22:56:09,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:56:09,028 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:56:09,028 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:56:09,028 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:56:09,030 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:56:09,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:09,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:56:09,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:09,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:56:09,687 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:56:09,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1485314980] [2022-01-31 22:56:09,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1485314980] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:56:09,687 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:56:09,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [40] imperfect sequences [] total 40 [2022-01-31 22:56:09,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746840469] [2022-01-31 22:56:09,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:56:09,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-01-31 22:56:09,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:56:09,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-01-31 22:56:09,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2022-01-31 22:56:09,688 INFO L87 Difference]: Start difference. First operand 186 states and 187 transitions. Second operand has 40 states, 40 states have (on average 4.525) internal successors, (181), 39 states have internal predecessors, (181), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:09,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:56:09,845 INFO L93 Difference]: Finished difference Result 201 states and 203 transitions. [2022-01-31 22:56:09,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-01-31 22:56:09,845 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 4.525) internal successors, (181), 39 states have internal predecessors, (181), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 184 [2022-01-31 22:56:09,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:56:09,846 INFO L225 Difference]: With dead ends: 201 [2022-01-31 22:56:09,846 INFO L226 Difference]: Without dead ends: 194 [2022-01-31 22:56:09,846 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2022-01-31 22:56:09,847 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 144 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:56:09,847 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 224 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:56:09,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2022-01-31 22:56:09,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 191. [2022-01-31 22:56:09,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 187 states have (on average 1.0106951871657754) internal successors, (189), 187 states have internal predecessors, (189), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:09,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 192 transitions. [2022-01-31 22:56:09,871 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 192 transitions. Word has length 184 [2022-01-31 22:56:09,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:56:09,871 INFO L470 AbstractCegarLoop]: Abstraction has 191 states and 192 transitions. [2022-01-31 22:56:09,871 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 4.525) internal successors, (181), 39 states have internal predecessors, (181), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:09,871 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 192 transitions. [2022-01-31 22:56:09,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-01-31 22:56:09,872 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:56:09,872 INFO L514 BasicCegarLoop]: trace histogram [29, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:56:09,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-01-31 22:56:09,872 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:56:09,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:56:09,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1975199823, now seen corresponding path program 28 times [2022-01-31 22:56:09,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:56:09,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1820168668] [2022-01-31 22:56:09,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:56:09,876 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:56:09,876 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:56:09,876 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:56:09,879 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:56:09,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:10,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:56:10,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:10,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:56:10,462 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:56:10,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1820168668] [2022-01-31 22:56:10,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1820168668] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:56:10,463 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:56:10,463 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [41] imperfect sequences [] total 41 [2022-01-31 22:56:10,463 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435334252] [2022-01-31 22:56:10,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:56:10,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-01-31 22:56:10,463 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:56:10,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-01-31 22:56:10,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=782, Invalid=858, Unknown=0, NotChecked=0, Total=1640 [2022-01-31 22:56:10,464 INFO L87 Difference]: Start difference. First operand 191 states and 192 transitions. Second operand has 41 states, 41 states have (on average 4.536585365853658) internal successors, (186), 40 states have internal predecessors, (186), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:10,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:56:10,648 INFO L93 Difference]: Finished difference Result 206 states and 208 transitions. [2022-01-31 22:56:10,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-01-31 22:56:10,649 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 4.536585365853658) internal successors, (186), 40 states have internal predecessors, (186), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 189 [2022-01-31 22:56:10,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:56:10,650 INFO L225 Difference]: With dead ends: 206 [2022-01-31 22:56:10,650 INFO L226 Difference]: Without dead ends: 199 [2022-01-31 22:56:10,650 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=782, Invalid=858, Unknown=0, NotChecked=0, Total=1640 [2022-01-31 22:56:10,654 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 168 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:56:10,654 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [168 Valid, 228 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:56:10,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2022-01-31 22:56:10,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 196. [2022-01-31 22:56:10,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 192 states have (on average 1.0104166666666667) internal successors, (194), 192 states have internal predecessors, (194), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:10,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 197 transitions. [2022-01-31 22:56:10,691 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 197 transitions. Word has length 189 [2022-01-31 22:56:10,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:56:10,691 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 197 transitions. [2022-01-31 22:56:10,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 4.536585365853658) internal successors, (186), 40 states have internal predecessors, (186), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:10,691 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 197 transitions. [2022-01-31 22:56:10,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2022-01-31 22:56:10,692 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:56:10,692 INFO L514 BasicCegarLoop]: trace histogram [30, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:56:10,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-01-31 22:56:10,692 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:56:10,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:56:10,693 INFO L85 PathProgramCache]: Analyzing trace with hash -1170857738, now seen corresponding path program 29 times [2022-01-31 22:56:10,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:56:10,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [577295279] [2022-01-31 22:56:10,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:56:10,696 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:56:10,697 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:56:10,697 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:56:10,699 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:56:10,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:11,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:56:11,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:11,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:56:11,392 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:56:11,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [577295279] [2022-01-31 22:56:11,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [577295279] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:56:11,393 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:56:11,393 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [42] imperfect sequences [] total 42 [2022-01-31 22:56:11,393 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890216221] [2022-01-31 22:56:11,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:56:11,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-01-31 22:56:11,393 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:56:11,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-01-31 22:56:11,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=822, Invalid=900, Unknown=0, NotChecked=0, Total=1722 [2022-01-31 22:56:11,394 INFO L87 Difference]: Start difference. First operand 196 states and 197 transitions. Second operand has 42 states, 42 states have (on average 4.5476190476190474) internal successors, (191), 41 states have internal predecessors, (191), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:11,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:56:11,574 INFO L93 Difference]: Finished difference Result 211 states and 213 transitions. [2022-01-31 22:56:11,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-01-31 22:56:11,575 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 4.5476190476190474) internal successors, (191), 41 states have internal predecessors, (191), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 194 [2022-01-31 22:56:11,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:56:11,576 INFO L225 Difference]: With dead ends: 211 [2022-01-31 22:56:11,576 INFO L226 Difference]: Without dead ends: 204 [2022-01-31 22:56:11,576 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=822, Invalid=900, Unknown=0, NotChecked=0, Total=1722 [2022-01-31 22:56:11,577 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 219 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:56:11,577 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [219 Valid, 234 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:56:11,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2022-01-31 22:56:11,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 201. [2022-01-31 22:56:11,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 197 states have (on average 1.0101522842639594) internal successors, (199), 197 states have internal predecessors, (199), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:11,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 202 transitions. [2022-01-31 22:56:11,602 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 202 transitions. Word has length 194 [2022-01-31 22:56:11,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:56:11,602 INFO L470 AbstractCegarLoop]: Abstraction has 201 states and 202 transitions. [2022-01-31 22:56:11,603 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 4.5476190476190474) internal successors, (191), 41 states have internal predecessors, (191), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:11,603 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 202 transitions. [2022-01-31 22:56:11,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2022-01-31 22:56:11,603 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:56:11,604 INFO L514 BasicCegarLoop]: trace histogram [31, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:56:11,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-01-31 22:56:11,604 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:56:11,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:56:11,604 INFO L85 PathProgramCache]: Analyzing trace with hash -529999151, now seen corresponding path program 30 times [2022-01-31 22:56:11,604 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:56:11,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [414339696] [2022-01-31 22:56:11,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:56:11,607 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:56:11,607 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:56:11,607 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:56:11,608 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:56:11,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:12,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:56:12,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:12,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:56:12,272 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:56:12,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [414339696] [2022-01-31 22:56:12,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [414339696] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:56:12,272 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:56:12,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [43] imperfect sequences [] total 43 [2022-01-31 22:56:12,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271875824] [2022-01-31 22:56:12,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:56:12,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-01-31 22:56:12,273 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:56:12,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-01-31 22:56:12,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=863, Invalid=943, Unknown=0, NotChecked=0, Total=1806 [2022-01-31 22:56:12,274 INFO L87 Difference]: Start difference. First operand 201 states and 202 transitions. Second operand has 43 states, 43 states have (on average 4.558139534883721) internal successors, (196), 42 states have internal predecessors, (196), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:12,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:56:12,444 INFO L93 Difference]: Finished difference Result 216 states and 218 transitions. [2022-01-31 22:56:12,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-01-31 22:56:12,444 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 4.558139534883721) internal successors, (196), 42 states have internal predecessors, (196), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 199 [2022-01-31 22:56:12,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:56:12,446 INFO L225 Difference]: With dead ends: 216 [2022-01-31 22:56:12,446 INFO L226 Difference]: Without dead ends: 209 [2022-01-31 22:56:12,447 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=863, Invalid=943, Unknown=0, NotChecked=0, Total=1806 [2022-01-31 22:56:12,448 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 171 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:56:12,448 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [171 Valid, 228 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:56:12,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2022-01-31 22:56:12,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 206. [2022-01-31 22:56:12,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 202 states have (on average 1.00990099009901) internal successors, (204), 202 states have internal predecessors, (204), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:12,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 207 transitions. [2022-01-31 22:56:12,487 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 207 transitions. Word has length 199 [2022-01-31 22:56:12,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:56:12,488 INFO L470 AbstractCegarLoop]: Abstraction has 206 states and 207 transitions. [2022-01-31 22:56:12,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 4.558139534883721) internal successors, (196), 42 states have internal predecessors, (196), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:12,488 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 207 transitions. [2022-01-31 22:56:12,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2022-01-31 22:56:12,489 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:56:12,489 INFO L514 BasicCegarLoop]: trace histogram [32, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:56:12,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-01-31 22:56:12,489 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:56:12,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:56:12,490 INFO L85 PathProgramCache]: Analyzing trace with hash -273215018, now seen corresponding path program 31 times [2022-01-31 22:56:12,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:56:12,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1199523036] [2022-01-31 22:56:12,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:56:12,492 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:56:12,492 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:56:12,492 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:56:12,494 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:56:12,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:13,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:56:13,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:13,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:56:13,192 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:56:13,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1199523036] [2022-01-31 22:56:13,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1199523036] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:56:13,193 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:56:13,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [44] imperfect sequences [] total 44 [2022-01-31 22:56:13,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112777351] [2022-01-31 22:56:13,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:56:13,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-01-31 22:56:13,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:56:13,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-01-31 22:56:13,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=905, Invalid=987, Unknown=0, NotChecked=0, Total=1892 [2022-01-31 22:56:13,196 INFO L87 Difference]: Start difference. First operand 206 states and 207 transitions. Second operand has 44 states, 44 states have (on average 4.568181818181818) internal successors, (201), 43 states have internal predecessors, (201), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:13,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:56:13,336 INFO L93 Difference]: Finished difference Result 221 states and 223 transitions. [2022-01-31 22:56:13,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-01-31 22:56:13,336 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 4.568181818181818) internal successors, (201), 43 states have internal predecessors, (201), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 204 [2022-01-31 22:56:13,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:56:13,337 INFO L225 Difference]: With dead ends: 221 [2022-01-31 22:56:13,337 INFO L226 Difference]: Without dead ends: 214 [2022-01-31 22:56:13,338 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=905, Invalid=987, Unknown=0, NotChecked=0, Total=1892 [2022-01-31 22:56:13,338 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 168 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:56:13,339 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [168 Valid, 279 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:56:13,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2022-01-31 22:56:13,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 211. [2022-01-31 22:56:13,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 207 states have (on average 1.0096618357487923) internal successors, (209), 207 states have internal predecessors, (209), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:13,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 212 transitions. [2022-01-31 22:56:13,377 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 212 transitions. Word has length 204 [2022-01-31 22:56:13,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:56:13,377 INFO L470 AbstractCegarLoop]: Abstraction has 211 states and 212 transitions. [2022-01-31 22:56:13,377 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 4.568181818181818) internal successors, (201), 43 states have internal predecessors, (201), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:13,377 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 212 transitions. [2022-01-31 22:56:13,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2022-01-31 22:56:13,378 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:56:13,378 INFO L514 BasicCegarLoop]: trace histogram [33, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:56:13,378 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-01-31 22:56:13,378 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:56:13,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:56:13,379 INFO L85 PathProgramCache]: Analyzing trace with hash 607876593, now seen corresponding path program 32 times [2022-01-31 22:56:13,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:56:13,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1845007897] [2022-01-31 22:56:13,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:56:13,382 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:56:13,382 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:56:13,382 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:56:13,384 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:56:13,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:14,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:56:14,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:14,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:56:14,081 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:56:14,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1845007897] [2022-01-31 22:56:14,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1845007897] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:56:14,081 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:56:14,081 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [45] imperfect sequences [] total 45 [2022-01-31 22:56:14,081 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48581013] [2022-01-31 22:56:14,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:56:14,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-01-31 22:56:14,082 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:56:14,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-01-31 22:56:14,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=948, Invalid=1032, Unknown=0, NotChecked=0, Total=1980 [2022-01-31 22:56:14,083 INFO L87 Difference]: Start difference. First operand 211 states and 212 transitions. Second operand has 45 states, 45 states have (on average 4.5777777777777775) internal successors, (206), 44 states have internal predecessors, (206), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:14,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:56:14,231 INFO L93 Difference]: Finished difference Result 226 states and 228 transitions. [2022-01-31 22:56:14,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-31 22:56:14,231 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 4.5777777777777775) internal successors, (206), 44 states have internal predecessors, (206), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 209 [2022-01-31 22:56:14,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:56:14,232 INFO L225 Difference]: With dead ends: 226 [2022-01-31 22:56:14,232 INFO L226 Difference]: Without dead ends: 219 [2022-01-31 22:56:14,233 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=948, Invalid=1032, Unknown=0, NotChecked=0, Total=1980 [2022-01-31 22:56:14,233 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 204 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:56:14,233 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [204 Valid, 217 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:56:14,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2022-01-31 22:56:14,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 216. [2022-01-31 22:56:14,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 212 states have (on average 1.009433962264151) internal successors, (214), 212 states have internal predecessors, (214), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:14,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 217 transitions. [2022-01-31 22:56:14,264 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 217 transitions. Word has length 209 [2022-01-31 22:56:14,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:56:14,265 INFO L470 AbstractCegarLoop]: Abstraction has 216 states and 217 transitions. [2022-01-31 22:56:14,265 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 4.5777777777777775) internal successors, (206), 44 states have internal predecessors, (206), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:14,265 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 217 transitions. [2022-01-31 22:56:14,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2022-01-31 22:56:14,266 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:56:14,266 INFO L514 BasicCegarLoop]: trace histogram [34, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:56:14,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-01-31 22:56:14,266 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:56:14,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:56:14,266 INFO L85 PathProgramCache]: Analyzing trace with hash -186094922, now seen corresponding path program 33 times [2022-01-31 22:56:14,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:56:14,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [96409323] [2022-01-31 22:56:14,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:56:14,269 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:56:14,269 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:56:14,270 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:56:14,271 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:56:14,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:14,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:56:14,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:14,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:56:14,895 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:56:14,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [96409323] [2022-01-31 22:56:14,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [96409323] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:56:14,896 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:56:14,896 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [46] imperfect sequences [] total 46 [2022-01-31 22:56:14,896 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115665953] [2022-01-31 22:56:14,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:56:14,896 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-01-31 22:56:14,896 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:56:14,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-01-31 22:56:14,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=992, Invalid=1078, Unknown=0, NotChecked=0, Total=2070 [2022-01-31 22:56:14,897 INFO L87 Difference]: Start difference. First operand 216 states and 217 transitions. Second operand has 46 states, 46 states have (on average 4.586956521739131) internal successors, (211), 45 states have internal predecessors, (211), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:15,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:56:15,077 INFO L93 Difference]: Finished difference Result 231 states and 233 transitions. [2022-01-31 22:56:15,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-31 22:56:15,078 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 4.586956521739131) internal successors, (211), 45 states have internal predecessors, (211), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 214 [2022-01-31 22:56:15,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:56:15,078 INFO L225 Difference]: With dead ends: 231 [2022-01-31 22:56:15,078 INFO L226 Difference]: Without dead ends: 224 [2022-01-31 22:56:15,080 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=992, Invalid=1078, Unknown=0, NotChecked=0, Total=2070 [2022-01-31 22:56:15,082 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 225 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:56:15,082 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [225 Valid, 264 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:56:15,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2022-01-31 22:56:15,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 221. [2022-01-31 22:56:15,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 217 states have (on average 1.0092165898617511) internal successors, (219), 217 states have internal predecessors, (219), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:15,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 222 transitions. [2022-01-31 22:56:15,115 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 222 transitions. Word has length 214 [2022-01-31 22:56:15,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:56:15,115 INFO L470 AbstractCegarLoop]: Abstraction has 221 states and 222 transitions. [2022-01-31 22:56:15,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 4.586956521739131) internal successors, (211), 45 states have internal predecessors, (211), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:15,115 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 222 transitions. [2022-01-31 22:56:15,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2022-01-31 22:56:15,116 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:56:15,116 INFO L514 BasicCegarLoop]: trace histogram [35, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:56:15,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-01-31 22:56:15,116 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:56:15,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:56:15,117 INFO L85 PathProgramCache]: Analyzing trace with hash 1583261969, now seen corresponding path program 34 times [2022-01-31 22:56:15,117 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:56:15,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [434185517] [2022-01-31 22:56:15,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:56:15,120 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:56:15,120 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:56:15,120 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:56:15,122 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:56:15,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:15,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:56:15,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:15,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:56:15,788 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:56:15,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [434185517] [2022-01-31 22:56:15,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [434185517] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:56:15,788 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:56:15,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [47] imperfect sequences [] total 47 [2022-01-31 22:56:15,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053898911] [2022-01-31 22:56:15,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:56:15,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-01-31 22:56:15,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:56:15,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-01-31 22:56:15,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1037, Invalid=1125, Unknown=0, NotChecked=0, Total=2162 [2022-01-31 22:56:15,791 INFO L87 Difference]: Start difference. First operand 221 states and 222 transitions. Second operand has 47 states, 47 states have (on average 4.595744680851064) internal successors, (216), 46 states have internal predecessors, (216), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:15,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:56:15,991 INFO L93 Difference]: Finished difference Result 236 states and 238 transitions. [2022-01-31 22:56:15,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-01-31 22:56:15,991 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 4.595744680851064) internal successors, (216), 46 states have internal predecessors, (216), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 219 [2022-01-31 22:56:15,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:56:15,992 INFO L225 Difference]: With dead ends: 236 [2022-01-31 22:56:15,992 INFO L226 Difference]: Without dead ends: 229 [2022-01-31 22:56:15,992 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1037, Invalid=1125, Unknown=0, NotChecked=0, Total=2162 [2022-01-31 22:56:15,993 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 237 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:56:15,995 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [237 Valid, 216 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:56:15,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2022-01-31 22:56:16,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 226. [2022-01-31 22:56:16,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 222 states have (on average 1.009009009009009) internal successors, (224), 222 states have internal predecessors, (224), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:16,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 227 transitions. [2022-01-31 22:56:16,031 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 227 transitions. Word has length 219 [2022-01-31 22:56:16,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:56:16,031 INFO L470 AbstractCegarLoop]: Abstraction has 226 states and 227 transitions. [2022-01-31 22:56:16,031 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 4.595744680851064) internal successors, (216), 46 states have internal predecessors, (216), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:16,031 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 227 transitions. [2022-01-31 22:56:16,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2022-01-31 22:56:16,032 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:56:16,032 INFO L514 BasicCegarLoop]: trace histogram [36, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:56:16,032 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-01-31 22:56:16,032 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:56:16,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:56:16,032 INFO L85 PathProgramCache]: Analyzing trace with hash -697816170, now seen corresponding path program 35 times [2022-01-31 22:56:16,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:56:16,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [132263030] [2022-01-31 22:56:16,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:56:16,036 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:56:16,036 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:56:16,036 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:56:16,038 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:56:16,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:16,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:56:16,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:16,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:56:16,899 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:56:16,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [132263030] [2022-01-31 22:56:16,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [132263030] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:56:16,899 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:56:16,899 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [48] imperfect sequences [] total 48 [2022-01-31 22:56:16,899 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719887454] [2022-01-31 22:56:16,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:56:16,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-01-31 22:56:16,900 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:56:16,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-01-31 22:56:16,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1083, Invalid=1173, Unknown=0, NotChecked=0, Total=2256 [2022-01-31 22:56:16,901 INFO L87 Difference]: Start difference. First operand 226 states and 227 transitions. Second operand has 48 states, 48 states have (on average 4.604166666666667) internal successors, (221), 47 states have internal predecessors, (221), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:17,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:56:17,093 INFO L93 Difference]: Finished difference Result 241 states and 243 transitions. [2022-01-31 22:56:17,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-01-31 22:56:17,093 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 4.604166666666667) internal successors, (221), 47 states have internal predecessors, (221), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 224 [2022-01-31 22:56:17,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:56:17,094 INFO L225 Difference]: With dead ends: 241 [2022-01-31 22:56:17,094 INFO L226 Difference]: Without dead ends: 234 [2022-01-31 22:56:17,095 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1083, Invalid=1173, Unknown=0, NotChecked=0, Total=2256 [2022-01-31 22:56:17,095 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 195 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:56:17,095 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [195 Valid, 269 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:56:17,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2022-01-31 22:56:17,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 231. [2022-01-31 22:56:17,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 227 states have (on average 1.0088105726872247) internal successors, (229), 227 states have internal predecessors, (229), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:17,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 232 transitions. [2022-01-31 22:56:17,133 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 232 transitions. Word has length 224 [2022-01-31 22:56:17,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:56:17,133 INFO L470 AbstractCegarLoop]: Abstraction has 231 states and 232 transitions. [2022-01-31 22:56:17,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 4.604166666666667) internal successors, (221), 47 states have internal predecessors, (221), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:17,133 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 232 transitions. [2022-01-31 22:56:17,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2022-01-31 22:56:17,134 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:56:17,134 INFO L514 BasicCegarLoop]: trace histogram [37, 36, 36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:56:17,134 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-01-31 22:56:17,134 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:56:17,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:56:17,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1259047887, now seen corresponding path program 36 times [2022-01-31 22:56:17,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:56:17,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1853943828] [2022-01-31 22:56:17,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:56:17,137 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:56:17,138 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:56:17,138 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:56:17,140 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:56:17,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:18,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:56:18,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:18,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:56:18,056 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:56:18,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1853943828] [2022-01-31 22:56:18,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1853943828] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:56:18,057 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:56:18,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [49] imperfect sequences [] total 49 [2022-01-31 22:56:18,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931085580] [2022-01-31 22:56:18,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:56:18,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-01-31 22:56:18,057 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:56:18,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-01-31 22:56:18,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1130, Invalid=1222, Unknown=0, NotChecked=0, Total=2352 [2022-01-31 22:56:18,058 INFO L87 Difference]: Start difference. First operand 231 states and 232 transitions. Second operand has 49 states, 49 states have (on average 4.612244897959184) internal successors, (226), 48 states have internal predecessors, (226), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:18,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:56:18,259 INFO L93 Difference]: Finished difference Result 246 states and 248 transitions. [2022-01-31 22:56:18,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-31 22:56:18,259 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 4.612244897959184) internal successors, (226), 48 states have internal predecessors, (226), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 229 [2022-01-31 22:56:18,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:56:18,260 INFO L225 Difference]: With dead ends: 246 [2022-01-31 22:56:18,260 INFO L226 Difference]: Without dead ends: 239 [2022-01-31 22:56:18,261 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1130, Invalid=1222, Unknown=0, NotChecked=0, Total=2352 [2022-01-31 22:56:18,261 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 207 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:56:18,262 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [207 Valid, 247 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:56:18,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2022-01-31 22:56:18,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 236. [2022-01-31 22:56:18,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 232 states have (on average 1.0086206896551724) internal successors, (234), 232 states have internal predecessors, (234), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:18,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 237 transitions. [2022-01-31 22:56:18,302 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 237 transitions. Word has length 229 [2022-01-31 22:56:18,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:56:18,303 INFO L470 AbstractCegarLoop]: Abstraction has 236 states and 237 transitions. [2022-01-31 22:56:18,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 4.612244897959184) internal successors, (226), 48 states have internal predecessors, (226), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:18,303 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 237 transitions. [2022-01-31 22:56:18,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2022-01-31 22:56:18,304 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:56:18,304 INFO L514 BasicCegarLoop]: trace histogram [38, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:56:18,304 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-01-31 22:56:18,304 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:56:18,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:56:18,305 INFO L85 PathProgramCache]: Analyzing trace with hash -212577162, now seen corresponding path program 37 times [2022-01-31 22:56:18,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:56:18,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [968504755] [2022-01-31 22:56:18,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:56:18,307 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:56:18,308 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:56:18,308 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:56:18,310 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:56:18,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:19,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:56:19,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:19,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:56:19,088 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:56:19,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [968504755] [2022-01-31 22:56:19,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [968504755] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:56:19,088 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:56:19,088 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [50] imperfect sequences [] total 50 [2022-01-31 22:56:19,088 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255930493] [2022-01-31 22:56:19,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:56:19,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-01-31 22:56:19,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:56:19,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-01-31 22:56:19,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1178, Invalid=1272, Unknown=0, NotChecked=0, Total=2450 [2022-01-31 22:56:19,090 INFO L87 Difference]: Start difference. First operand 236 states and 237 transitions. Second operand has 50 states, 50 states have (on average 4.62) internal successors, (231), 49 states have internal predecessors, (231), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:19,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:56:19,303 INFO L93 Difference]: Finished difference Result 251 states and 253 transitions. [2022-01-31 22:56:19,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-01-31 22:56:19,303 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 4.62) internal successors, (231), 49 states have internal predecessors, (231), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 234 [2022-01-31 22:56:19,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:56:19,304 INFO L225 Difference]: With dead ends: 251 [2022-01-31 22:56:19,304 INFO L226 Difference]: Without dead ends: 244 [2022-01-31 22:56:19,305 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1178, Invalid=1272, Unknown=0, NotChecked=0, Total=2450 [2022-01-31 22:56:19,305 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 228 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:56:19,305 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [228 Valid, 224 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:56:19,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2022-01-31 22:56:19,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 241. [2022-01-31 22:56:19,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 237 states have (on average 1.0084388185654007) internal successors, (239), 237 states have internal predecessors, (239), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:19,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 242 transitions. [2022-01-31 22:56:19,348 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 242 transitions. Word has length 234 [2022-01-31 22:56:19,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:56:19,348 INFO L470 AbstractCegarLoop]: Abstraction has 241 states and 242 transitions. [2022-01-31 22:56:19,348 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 4.62) internal successors, (231), 49 states have internal predecessors, (231), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:19,348 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 242 transitions. [2022-01-31 22:56:19,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2022-01-31 22:56:19,349 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:56:19,349 INFO L514 BasicCegarLoop]: trace histogram [39, 38, 38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:56:19,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-01-31 22:56:19,349 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:56:19,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:56:19,350 INFO L85 PathProgramCache]: Analyzing trace with hash -1952524463, now seen corresponding path program 38 times [2022-01-31 22:56:19,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:56:19,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [840029352] [2022-01-31 22:56:19,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:56:19,352 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:56:19,352 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:56:19,353 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:56:19,355 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:56:19,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:20,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:56:20,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:20,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:56:20,168 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:56:20,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [840029352] [2022-01-31 22:56:20,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [840029352] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:56:20,168 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:56:20,168 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [51] imperfect sequences [] total 51 [2022-01-31 22:56:20,168 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112418072] [2022-01-31 22:56:20,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:56:20,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-01-31 22:56:20,168 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:56:20,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-01-31 22:56:20,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1227, Invalid=1323, Unknown=0, NotChecked=0, Total=2550 [2022-01-31 22:56:20,169 INFO L87 Difference]: Start difference. First operand 241 states and 242 transitions. Second operand has 51 states, 51 states have (on average 4.627450980392157) internal successors, (236), 50 states have internal predecessors, (236), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:20,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:56:20,410 INFO L93 Difference]: Finished difference Result 256 states and 258 transitions. [2022-01-31 22:56:20,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-01-31 22:56:20,411 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 4.627450980392157) internal successors, (236), 50 states have internal predecessors, (236), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 239 [2022-01-31 22:56:20,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:56:20,412 INFO L225 Difference]: With dead ends: 256 [2022-01-31 22:56:20,412 INFO L226 Difference]: Without dead ends: 249 [2022-01-31 22:56:20,412 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1227, Invalid=1323, Unknown=0, NotChecked=0, Total=2550 [2022-01-31 22:56:20,412 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 225 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 22:56:20,413 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [225 Valid, 258 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 22:56:20,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2022-01-31 22:56:20,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 246. [2022-01-31 22:56:20,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 242 states have (on average 1.0082644628099173) internal successors, (244), 242 states have internal predecessors, (244), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:20,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 247 transitions. [2022-01-31 22:56:20,458 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 247 transitions. Word has length 239 [2022-01-31 22:56:20,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:56:20,458 INFO L470 AbstractCegarLoop]: Abstraction has 246 states and 247 transitions. [2022-01-31 22:56:20,458 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 4.627450980392157) internal successors, (236), 50 states have internal predecessors, (236), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:20,458 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 247 transitions. [2022-01-31 22:56:20,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2022-01-31 22:56:20,459 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:56:20,459 INFO L514 BasicCegarLoop]: trace histogram [40, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:56:20,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-01-31 22:56:20,460 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:56:20,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:56:20,460 INFO L85 PathProgramCache]: Analyzing trace with hash -582294186, now seen corresponding path program 39 times [2022-01-31 22:56:20,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:56:20,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [477081168] [2022-01-31 22:56:20,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:56:20,463 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:56:20,464 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:56:20,464 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:56:20,467 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:56:20,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:21,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:56:21,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:21,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:56:21,448 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:56:21,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [477081168] [2022-01-31 22:56:21,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [477081168] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:56:21,448 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:56:21,448 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [] total 52 [2022-01-31 22:56:21,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166586497] [2022-01-31 22:56:21,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:56:21,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-01-31 22:56:21,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:56:21,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-01-31 22:56:21,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1277, Invalid=1375, Unknown=0, NotChecked=0, Total=2652 [2022-01-31 22:56:21,450 INFO L87 Difference]: Start difference. First operand 246 states and 247 transitions. Second operand has 52 states, 52 states have (on average 4.634615384615385) internal successors, (241), 51 states have internal predecessors, (241), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:21,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:56:21,660 INFO L93 Difference]: Finished difference Result 261 states and 263 transitions. [2022-01-31 22:56:21,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-01-31 22:56:21,660 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 4.634615384615385) internal successors, (241), 51 states have internal predecessors, (241), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 244 [2022-01-31 22:56:21,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:56:21,661 INFO L225 Difference]: With dead ends: 261 [2022-01-31 22:56:21,661 INFO L226 Difference]: Without dead ends: 254 [2022-01-31 22:56:21,662 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1277, Invalid=1375, Unknown=0, NotChecked=0, Total=2652 [2022-01-31 22:56:21,669 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 228 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:56:21,669 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [228 Valid, 267 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:56:21,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2022-01-31 22:56:21,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 251. [2022-01-31 22:56:21,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 247 states have (on average 1.008097165991903) internal successors, (249), 247 states have internal predecessors, (249), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:21,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 252 transitions. [2022-01-31 22:56:21,717 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 252 transitions. Word has length 244 [2022-01-31 22:56:21,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:56:21,719 INFO L470 AbstractCegarLoop]: Abstraction has 251 states and 252 transitions. [2022-01-31 22:56:21,719 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 4.634615384615385) internal successors, (241), 51 states have internal predecessors, (241), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:21,719 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 252 transitions. [2022-01-31 22:56:21,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2022-01-31 22:56:21,720 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:56:21,720 INFO L514 BasicCegarLoop]: trace histogram [41, 40, 40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:56:21,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-01-31 22:56:21,720 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:56:21,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:56:21,720 INFO L85 PathProgramCache]: Analyzing trace with hash -1551904143, now seen corresponding path program 40 times [2022-01-31 22:56:21,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:56:21,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1681013535] [2022-01-31 22:56:21,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:56:21,724 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:56:21,724 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:56:21,724 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:56:21,726 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:56:21,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:22,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:56:22,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:22,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:56:22,426 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:56:22,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1681013535] [2022-01-31 22:56:22,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1681013535] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:56:22,426 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:56:22,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [53] imperfect sequences [] total 53 [2022-01-31 22:56:22,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011127500] [2022-01-31 22:56:22,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:56:22,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-01-31 22:56:22,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:56:22,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-01-31 22:56:22,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1328, Invalid=1428, Unknown=0, NotChecked=0, Total=2756 [2022-01-31 22:56:22,428 INFO L87 Difference]: Start difference. First operand 251 states and 252 transitions. Second operand has 53 states, 53 states have (on average 4.6415094339622645) internal successors, (246), 52 states have internal predecessors, (246), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:22,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:56:22,621 INFO L93 Difference]: Finished difference Result 266 states and 268 transitions. [2022-01-31 22:56:22,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-01-31 22:56:22,621 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 4.6415094339622645) internal successors, (246), 52 states have internal predecessors, (246), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 249 [2022-01-31 22:56:22,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:56:22,622 INFO L225 Difference]: With dead ends: 266 [2022-01-31 22:56:22,622 INFO L226 Difference]: Without dead ends: 259 [2022-01-31 22:56:22,623 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1328, Invalid=1428, Unknown=0, NotChecked=0, Total=2756 [2022-01-31 22:56:22,623 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 225 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:56:22,624 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [225 Valid, 249 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:56:22,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2022-01-31 22:56:22,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 256. [2022-01-31 22:56:22,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 252 states have (on average 1.007936507936508) internal successors, (254), 252 states have internal predecessors, (254), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:22,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 257 transitions. [2022-01-31 22:56:22,675 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 257 transitions. Word has length 249 [2022-01-31 22:56:22,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:56:22,676 INFO L470 AbstractCegarLoop]: Abstraction has 256 states and 257 transitions. [2022-01-31 22:56:22,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 4.6415094339622645) internal successors, (246), 52 states have internal predecessors, (246), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:22,676 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 257 transitions. [2022-01-31 22:56:22,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2022-01-31 22:56:22,677 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:56:22,677 INFO L514 BasicCegarLoop]: trace histogram [42, 41, 41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:56:22,677 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-01-31 22:56:22,677 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:56:22,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:56:22,677 INFO L85 PathProgramCache]: Analyzing trace with hash 946462262, now seen corresponding path program 41 times [2022-01-31 22:56:22,678 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:56:22,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [32603724] [2022-01-31 22:56:22,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:56:22,680 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:56:22,680 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:56:22,680 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:56:22,683 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:56:22,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:23,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:56:23,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:23,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:56:23,455 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:56:23,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [32603724] [2022-01-31 22:56:23,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [32603724] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:56:23,455 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:56:23,455 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [54] imperfect sequences [] total 54 [2022-01-31 22:56:23,455 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015744256] [2022-01-31 22:56:23,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:56:23,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-01-31 22:56:23,455 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:56:23,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-01-31 22:56:23,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1380, Invalid=1482, Unknown=0, NotChecked=0, Total=2862 [2022-01-31 22:56:23,456 INFO L87 Difference]: Start difference. First operand 256 states and 257 transitions. Second operand has 54 states, 54 states have (on average 4.648148148148148) internal successors, (251), 53 states have internal predecessors, (251), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:23,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:56:23,659 INFO L93 Difference]: Finished difference Result 271 states and 273 transitions. [2022-01-31 22:56:23,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-01-31 22:56:23,659 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 4.648148148148148) internal successors, (251), 53 states have internal predecessors, (251), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 254 [2022-01-31 22:56:23,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:56:23,676 INFO L225 Difference]: With dead ends: 271 [2022-01-31 22:56:23,676 INFO L226 Difference]: Without dead ends: 264 [2022-01-31 22:56:23,676 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1380, Invalid=1482, Unknown=0, NotChecked=0, Total=2862 [2022-01-31 22:56:23,676 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 213 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:56:23,676 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [213 Valid, 258 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:56:23,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2022-01-31 22:56:23,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 261. [2022-01-31 22:56:23,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 257 states have (on average 1.0077821011673151) internal successors, (259), 257 states have internal predecessors, (259), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:23,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 262 transitions. [2022-01-31 22:56:23,775 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 262 transitions. Word has length 254 [2022-01-31 22:56:23,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:56:23,775 INFO L470 AbstractCegarLoop]: Abstraction has 261 states and 262 transitions. [2022-01-31 22:56:23,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 4.648148148148148) internal successors, (251), 53 states have internal predecessors, (251), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:23,775 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 262 transitions. [2022-01-31 22:56:23,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2022-01-31 22:56:23,776 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:56:23,776 INFO L514 BasicCegarLoop]: trace histogram [43, 42, 42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:56:23,777 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-01-31 22:56:23,777 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:56:23,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:56:23,777 INFO L85 PathProgramCache]: Analyzing trace with hash 993617297, now seen corresponding path program 42 times [2022-01-31 22:56:23,777 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:56:23,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1014495288] [2022-01-31 22:56:23,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:56:23,788 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:56:23,788 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:56:23,788 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:56:23,790 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:56:23,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:24,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:56:24,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:24,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:56:24,487 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:56:24,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1014495288] [2022-01-31 22:56:24,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1014495288] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:56:24,488 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:56:24,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [55] imperfect sequences [] total 55 [2022-01-31 22:56:24,488 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847008794] [2022-01-31 22:56:24,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:56:24,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-01-31 22:56:24,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:56:24,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-01-31 22:56:24,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1433, Invalid=1537, Unknown=0, NotChecked=0, Total=2970 [2022-01-31 22:56:24,489 INFO L87 Difference]: Start difference. First operand 261 states and 262 transitions. Second operand has 55 states, 55 states have (on average 4.654545454545454) internal successors, (256), 54 states have internal predecessors, (256), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:24,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:56:24,712 INFO L93 Difference]: Finished difference Result 276 states and 278 transitions. [2022-01-31 22:56:24,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-01-31 22:56:24,713 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 4.654545454545454) internal successors, (256), 54 states have internal predecessors, (256), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 259 [2022-01-31 22:56:24,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:56:24,714 INFO L225 Difference]: With dead ends: 276 [2022-01-31 22:56:24,714 INFO L226 Difference]: Without dead ends: 269 [2022-01-31 22:56:24,714 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1433, Invalid=1537, Unknown=0, NotChecked=0, Total=2970 [2022-01-31 22:56:24,714 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 222 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:56:24,715 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [222 Valid, 250 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:56:24,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2022-01-31 22:56:24,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 266. [2022-01-31 22:56:24,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 262 states have (on average 1.0076335877862594) internal successors, (264), 262 states have internal predecessors, (264), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:24,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 267 transitions. [2022-01-31 22:56:24,771 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 267 transitions. Word has length 259 [2022-01-31 22:56:24,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:56:24,771 INFO L470 AbstractCegarLoop]: Abstraction has 266 states and 267 transitions. [2022-01-31 22:56:24,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 4.654545454545454) internal successors, (256), 54 states have internal predecessors, (256), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:24,771 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 267 transitions. [2022-01-31 22:56:24,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2022-01-31 22:56:24,772 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:56:24,772 INFO L514 BasicCegarLoop]: trace histogram [44, 43, 43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:56:24,772 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-01-31 22:56:24,772 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:56:24,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:56:24,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1689305322, now seen corresponding path program 43 times [2022-01-31 22:56:24,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:56:24,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1616863689] [2022-01-31 22:56:24,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:56:24,775 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:56:24,775 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:56:24,775 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:56:24,778 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:56:24,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:25,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:56:25,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:25,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:56:25,777 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:56:25,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1616863689] [2022-01-31 22:56:25,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1616863689] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:56:25,778 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:56:25,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [56] imperfect sequences [] total 56 [2022-01-31 22:56:25,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120531642] [2022-01-31 22:56:25,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:56:25,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-01-31 22:56:25,778 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:56:25,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-01-31 22:56:25,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1487, Invalid=1593, Unknown=0, NotChecked=0, Total=3080 [2022-01-31 22:56:25,779 INFO L87 Difference]: Start difference. First operand 266 states and 267 transitions. Second operand has 56 states, 56 states have (on average 4.660714285714286) internal successors, (261), 55 states have internal predecessors, (261), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:26,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:56:26,010 INFO L93 Difference]: Finished difference Result 281 states and 283 transitions. [2022-01-31 22:56:26,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-01-31 22:56:26,011 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 4.660714285714286) internal successors, (261), 55 states have internal predecessors, (261), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 264 [2022-01-31 22:56:26,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:56:26,012 INFO L225 Difference]: With dead ends: 281 [2022-01-31 22:56:26,012 INFO L226 Difference]: Without dead ends: 274 [2022-01-31 22:56:26,012 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1487, Invalid=1593, Unknown=0, NotChecked=0, Total=3080 [2022-01-31 22:56:26,012 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 264 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:56:26,013 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [264 Valid, 228 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:56:26,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2022-01-31 22:56:26,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 271. [2022-01-31 22:56:26,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 267 states have (on average 1.0074906367041199) internal successors, (269), 267 states have internal predecessors, (269), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:26,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 272 transitions. [2022-01-31 22:56:26,087 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 272 transitions. Word has length 264 [2022-01-31 22:56:26,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:56:26,087 INFO L470 AbstractCegarLoop]: Abstraction has 271 states and 272 transitions. [2022-01-31 22:56:26,087 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 4.660714285714286) internal successors, (261), 55 states have internal predecessors, (261), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:26,087 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 272 transitions. [2022-01-31 22:56:26,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2022-01-31 22:56:26,088 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:56:26,089 INFO L514 BasicCegarLoop]: trace histogram [45, 44, 44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:56:26,089 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-01-31 22:56:26,089 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:56:26,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:56:26,089 INFO L85 PathProgramCache]: Analyzing trace with hash 787321009, now seen corresponding path program 44 times [2022-01-31 22:56:26,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:56:26,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1518702212] [2022-01-31 22:56:26,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:56:26,099 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:56:26,099 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:56:26,099 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:56:26,102 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:56:26,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:27,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:56:27,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:27,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:56:27,116 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:56:27,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1518702212] [2022-01-31 22:56:27,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1518702212] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:56:27,117 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:56:27,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [57] imperfect sequences [] total 57 [2022-01-31 22:56:27,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764980344] [2022-01-31 22:56:27,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:56:27,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-01-31 22:56:27,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:56:27,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-01-31 22:56:27,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1542, Invalid=1650, Unknown=0, NotChecked=0, Total=3192 [2022-01-31 22:56:27,118 INFO L87 Difference]: Start difference. First operand 271 states and 272 transitions. Second operand has 57 states, 57 states have (on average 4.666666666666667) internal successors, (266), 56 states have internal predecessors, (266), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:27,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:56:27,315 INFO L93 Difference]: Finished difference Result 286 states and 288 transitions. [2022-01-31 22:56:27,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-01-31 22:56:27,316 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 4.666666666666667) internal successors, (266), 56 states have internal predecessors, (266), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 269 [2022-01-31 22:56:27,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:56:27,316 INFO L225 Difference]: With dead ends: 286 [2022-01-31 22:56:27,317 INFO L226 Difference]: Without dead ends: 279 [2022-01-31 22:56:27,317 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1542, Invalid=1650, Unknown=0, NotChecked=0, Total=3192 [2022-01-31 22:56:27,317 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 231 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:56:27,318 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [231 Valid, 243 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:56:27,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2022-01-31 22:56:27,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 276. [2022-01-31 22:56:27,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 272 states have (on average 1.0073529411764706) internal successors, (274), 272 states have internal predecessors, (274), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:27,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 277 transitions. [2022-01-31 22:56:27,381 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 277 transitions. Word has length 269 [2022-01-31 22:56:27,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:56:27,381 INFO L470 AbstractCegarLoop]: Abstraction has 276 states and 277 transitions. [2022-01-31 22:56:27,381 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 4.666666666666667) internal successors, (266), 56 states have internal predecessors, (266), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:27,381 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 277 transitions. [2022-01-31 22:56:27,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2022-01-31 22:56:27,382 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:56:27,382 INFO L514 BasicCegarLoop]: trace histogram [46, 45, 45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:56:27,382 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-01-31 22:56:27,382 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:56:27,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:56:27,383 INFO L85 PathProgramCache]: Analyzing trace with hash 1863911414, now seen corresponding path program 45 times [2022-01-31 22:56:27,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:56:27,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [604041255] [2022-01-31 22:56:27,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:56:27,387 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:56:27,387 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:56:27,387 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:56:27,389 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:56:27,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:28,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:56:28,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:28,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:56:28,411 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:56:28,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [604041255] [2022-01-31 22:56:28,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [604041255] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:56:28,411 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:56:28,411 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [58] imperfect sequences [] total 58 [2022-01-31 22:56:28,411 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110529630] [2022-01-31 22:56:28,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:56:28,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-01-31 22:56:28,411 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:56:28,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-01-31 22:56:28,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1598, Invalid=1708, Unknown=0, NotChecked=0, Total=3306 [2022-01-31 22:56:28,413 INFO L87 Difference]: Start difference. First operand 276 states and 277 transitions. Second operand has 58 states, 58 states have (on average 4.672413793103448) internal successors, (271), 57 states have internal predecessors, (271), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:28,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:56:28,670 INFO L93 Difference]: Finished difference Result 291 states and 293 transitions. [2022-01-31 22:56:28,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-01-31 22:56:28,670 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 4.672413793103448) internal successors, (271), 57 states have internal predecessors, (271), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 274 [2022-01-31 22:56:28,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:56:28,671 INFO L225 Difference]: With dead ends: 291 [2022-01-31 22:56:28,671 INFO L226 Difference]: Without dead ends: 284 [2022-01-31 22:56:28,672 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1598, Invalid=1708, Unknown=0, NotChecked=0, Total=3306 [2022-01-31 22:56:28,672 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 243 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 22:56:28,672 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [243 Valid, 251 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 22:56:28,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2022-01-31 22:56:28,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 281. [2022-01-31 22:56:28,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 277 states have (on average 1.0072202166064983) internal successors, (279), 277 states have internal predecessors, (279), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:28,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 282 transitions. [2022-01-31 22:56:28,740 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 282 transitions. Word has length 274 [2022-01-31 22:56:28,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:56:28,740 INFO L470 AbstractCegarLoop]: Abstraction has 281 states and 282 transitions. [2022-01-31 22:56:28,741 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 4.672413793103448) internal successors, (271), 57 states have internal predecessors, (271), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:28,741 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 282 transitions. [2022-01-31 22:56:28,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2022-01-31 22:56:28,764 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:56:28,764 INFO L514 BasicCegarLoop]: trace histogram [47, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:56:28,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-01-31 22:56:28,764 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:56:28,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:56:28,764 INFO L85 PathProgramCache]: Analyzing trace with hash 406737873, now seen corresponding path program 46 times [2022-01-31 22:56:28,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:56:28,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [148126369] [2022-01-31 22:56:28,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:56:28,767 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:56:28,767 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:56:28,767 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:56:28,770 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:56:28,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:29,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:56:29,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:29,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:56:29,900 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:56:29,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [148126369] [2022-01-31 22:56:29,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [148126369] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:56:29,900 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:56:29,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [59] imperfect sequences [] total 59 [2022-01-31 22:56:29,901 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434105597] [2022-01-31 22:56:29,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:56:29,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-01-31 22:56:29,901 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:56:29,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-01-31 22:56:29,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1655, Invalid=1767, Unknown=0, NotChecked=0, Total=3422 [2022-01-31 22:56:29,902 INFO L87 Difference]: Start difference. First operand 281 states and 282 transitions. Second operand has 59 states, 59 states have (on average 4.677966101694915) internal successors, (276), 58 states have internal predecessors, (276), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:30,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:56:30,113 INFO L93 Difference]: Finished difference Result 296 states and 298 transitions. [2022-01-31 22:56:30,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-01-31 22:56:30,114 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 4.677966101694915) internal successors, (276), 58 states have internal predecessors, (276), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 279 [2022-01-31 22:56:30,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:56:30,115 INFO L225 Difference]: With dead ends: 296 [2022-01-31 22:56:30,115 INFO L226 Difference]: Without dead ends: 289 [2022-01-31 22:56:30,115 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1655, Invalid=1767, Unknown=0, NotChecked=0, Total=3422 [2022-01-31 22:56:30,115 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 228 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:56:30,116 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [228 Valid, 268 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:56:30,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2022-01-31 22:56:30,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 286. [2022-01-31 22:56:30,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 282 states have (on average 1.0070921985815602) internal successors, (284), 282 states have internal predecessors, (284), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:30,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 287 transitions. [2022-01-31 22:56:30,184 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 287 transitions. Word has length 279 [2022-01-31 22:56:30,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:56:30,184 INFO L470 AbstractCegarLoop]: Abstraction has 286 states and 287 transitions. [2022-01-31 22:56:30,184 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 4.677966101694915) internal successors, (276), 58 states have internal predecessors, (276), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:30,185 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 287 transitions. [2022-01-31 22:56:30,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2022-01-31 22:56:30,185 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:56:30,186 INFO L514 BasicCegarLoop]: trace histogram [48, 47, 47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:56:30,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-01-31 22:56:30,186 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:56:30,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:56:30,186 INFO L85 PathProgramCache]: Analyzing trace with hash -815449898, now seen corresponding path program 47 times [2022-01-31 22:56:30,186 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:56:30,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1993925379] [2022-01-31 22:56:30,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:56:30,188 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:56:30,189 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:56:30,189 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:56:30,191 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:56:30,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:31,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:56:31,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:31,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:56:31,181 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:56:31,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1993925379] [2022-01-31 22:56:31,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1993925379] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:56:31,181 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:56:31,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [60] imperfect sequences [] total 60 [2022-01-31 22:56:31,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274829299] [2022-01-31 22:56:31,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:56:31,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2022-01-31 22:56:31,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:56:31,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2022-01-31 22:56:31,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1713, Invalid=1827, Unknown=0, NotChecked=0, Total=3540 [2022-01-31 22:56:31,183 INFO L87 Difference]: Start difference. First operand 286 states and 287 transitions. Second operand has 60 states, 60 states have (on average 4.683333333333334) internal successors, (281), 59 states have internal predecessors, (281), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:31,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:56:31,416 INFO L93 Difference]: Finished difference Result 301 states and 303 transitions. [2022-01-31 22:56:31,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-01-31 22:56:31,417 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 4.683333333333334) internal successors, (281), 59 states have internal predecessors, (281), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 284 [2022-01-31 22:56:31,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:56:31,418 INFO L225 Difference]: With dead ends: 301 [2022-01-31 22:56:31,418 INFO L226 Difference]: Without dead ends: 294 [2022-01-31 22:56:31,420 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1713, Invalid=1827, Unknown=0, NotChecked=0, Total=3540 [2022-01-31 22:56:31,421 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 249 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:56:31,421 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [249 Valid, 259 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:56:31,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2022-01-31 22:56:31,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 291. [2022-01-31 22:56:31,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 287 states have (on average 1.0069686411149825) internal successors, (289), 287 states have internal predecessors, (289), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:31,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 292 transitions. [2022-01-31 22:56:31,518 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 292 transitions. Word has length 284 [2022-01-31 22:56:31,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:56:31,518 INFO L470 AbstractCegarLoop]: Abstraction has 291 states and 292 transitions. [2022-01-31 22:56:31,519 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 4.683333333333334) internal successors, (281), 59 states have internal predecessors, (281), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:31,519 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 292 transitions. [2022-01-31 22:56:31,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2022-01-31 22:56:31,520 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:56:31,520 INFO L514 BasicCegarLoop]: trace histogram [49, 48, 48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:56:31,520 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-01-31 22:56:31,520 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:56:31,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:56:31,521 INFO L85 PathProgramCache]: Analyzing trace with hash 1850584817, now seen corresponding path program 48 times [2022-01-31 22:56:31,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:56:31,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2010540025] [2022-01-31 22:56:31,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:56:31,523 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:56:31,523 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:56:31,524 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:56:31,526 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:56:31,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:32,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:56:32,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:32,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:56:32,840 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:56:32,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2010540025] [2022-01-31 22:56:32,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2010540025] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:56:32,840 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:56:32,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [61] imperfect sequences [] total 61 [2022-01-31 22:56:32,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241150423] [2022-01-31 22:56:32,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:56:32,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-01-31 22:56:32,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:56:32,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-01-31 22:56:32,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1772, Invalid=1888, Unknown=0, NotChecked=0, Total=3660 [2022-01-31 22:56:32,842 INFO L87 Difference]: Start difference. First operand 291 states and 292 transitions. Second operand has 61 states, 61 states have (on average 4.688524590163935) internal successors, (286), 60 states have internal predecessors, (286), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:33,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:56:33,107 INFO L93 Difference]: Finished difference Result 306 states and 308 transitions. [2022-01-31 22:56:33,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-01-31 22:56:33,108 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 4.688524590163935) internal successors, (286), 60 states have internal predecessors, (286), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 289 [2022-01-31 22:56:33,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:56:33,109 INFO L225 Difference]: With dead ends: 306 [2022-01-31 22:56:33,109 INFO L226 Difference]: Without dead ends: 299 [2022-01-31 22:56:33,109 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1772, Invalid=1888, Unknown=0, NotChecked=0, Total=3660 [2022-01-31 22:56:33,109 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 270 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 22:56:33,110 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [270 Valid, 294 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 22:56:33,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2022-01-31 22:56:33,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 296. [2022-01-31 22:56:33,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 292 states have (on average 1.0068493150684932) internal successors, (294), 292 states have internal predecessors, (294), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:33,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 297 transitions. [2022-01-31 22:56:33,216 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 297 transitions. Word has length 289 [2022-01-31 22:56:33,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:56:33,217 INFO L470 AbstractCegarLoop]: Abstraction has 296 states and 297 transitions. [2022-01-31 22:56:33,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 4.688524590163935) internal successors, (286), 60 states have internal predecessors, (286), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:33,217 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 297 transitions. [2022-01-31 22:56:33,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2022-01-31 22:56:33,218 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:56:33,218 INFO L514 BasicCegarLoop]: trace histogram [50, 49, 49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:56:33,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-01-31 22:56:33,218 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:56:33,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:56:33,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1783746998, now seen corresponding path program 49 times [2022-01-31 22:56:33,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:56:33,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [647732196] [2022-01-31 22:56:33,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:56:33,221 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:56:33,221 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:56:33,221 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:56:33,223 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:56:33,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:34,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:56:34,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:34,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:56:34,346 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:56:34,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [647732196] [2022-01-31 22:56:34,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [647732196] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:56:34,346 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:56:34,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [62] imperfect sequences [] total 62 [2022-01-31 22:56:34,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731405852] [2022-01-31 22:56:34,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:56:34,347 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2022-01-31 22:56:34,347 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:56:34,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2022-01-31 22:56:34,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1832, Invalid=1950, Unknown=0, NotChecked=0, Total=3782 [2022-01-31 22:56:34,348 INFO L87 Difference]: Start difference. First operand 296 states and 297 transitions. Second operand has 62 states, 62 states have (on average 4.693548387096774) internal successors, (291), 61 states have internal predecessors, (291), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:34,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:56:34,572 INFO L93 Difference]: Finished difference Result 311 states and 313 transitions. [2022-01-31 22:56:34,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-01-31 22:56:34,572 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 4.693548387096774) internal successors, (291), 61 states have internal predecessors, (291), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 294 [2022-01-31 22:56:34,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:56:34,573 INFO L225 Difference]: With dead ends: 311 [2022-01-31 22:56:34,574 INFO L226 Difference]: Without dead ends: 304 [2022-01-31 22:56:34,574 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1832, Invalid=1950, Unknown=0, NotChecked=0, Total=3782 [2022-01-31 22:56:34,574 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 315 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:56:34,575 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [315 Valid, 266 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:56:34,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2022-01-31 22:56:34,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 301. [2022-01-31 22:56:34,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 297 states have (on average 1.0067340067340067) internal successors, (299), 297 states have internal predecessors, (299), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:34,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 302 transitions. [2022-01-31 22:56:34,677 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 302 transitions. Word has length 294 [2022-01-31 22:56:34,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:56:34,678 INFO L470 AbstractCegarLoop]: Abstraction has 301 states and 302 transitions. [2022-01-31 22:56:34,678 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 4.693548387096774) internal successors, (291), 61 states have internal predecessors, (291), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:34,678 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 302 transitions. [2022-01-31 22:56:34,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2022-01-31 22:56:34,679 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:56:34,679 INFO L514 BasicCegarLoop]: trace histogram [51, 50, 50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:56:34,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-01-31 22:56:34,679 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:56:34,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:56:34,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1514298863, now seen corresponding path program 50 times [2022-01-31 22:56:34,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:56:34,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [718468651] [2022-01-31 22:56:34,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:56:34,682 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:56:34,682 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:56:34,682 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:56:34,684 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:56:34,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:36,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:56:36,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:36,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:56:36,065 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:56:36,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [718468651] [2022-01-31 22:56:36,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [718468651] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:56:36,065 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:56:36,065 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [63] imperfect sequences [] total 63 [2022-01-31 22:56:36,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782786478] [2022-01-31 22:56:36,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:56:36,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-01-31 22:56:36,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:56:36,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-01-31 22:56:36,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1893, Invalid=2013, Unknown=0, NotChecked=0, Total=3906 [2022-01-31 22:56:36,067 INFO L87 Difference]: Start difference. First operand 301 states and 302 transitions. Second operand has 63 states, 63 states have (on average 4.698412698412699) internal successors, (296), 62 states have internal predecessors, (296), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:36,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:56:36,344 INFO L93 Difference]: Finished difference Result 316 states and 318 transitions. [2022-01-31 22:56:36,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-01-31 22:56:36,344 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 4.698412698412699) internal successors, (296), 62 states have internal predecessors, (296), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 299 [2022-01-31 22:56:36,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:56:36,345 INFO L225 Difference]: With dead ends: 316 [2022-01-31 22:56:36,345 INFO L226 Difference]: Without dead ends: 309 [2022-01-31 22:56:36,346 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1893, Invalid=2013, Unknown=0, NotChecked=0, Total=3906 [2022-01-31 22:56:36,346 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 318 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 22:56:36,346 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [318 Valid, 286 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 22:56:36,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2022-01-31 22:56:36,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 306. [2022-01-31 22:56:36,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 302 states have (on average 1.0066225165562914) internal successors, (304), 302 states have internal predecessors, (304), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:36,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 307 transitions. [2022-01-31 22:56:36,430 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 307 transitions. Word has length 299 [2022-01-31 22:56:36,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:56:36,431 INFO L470 AbstractCegarLoop]: Abstraction has 306 states and 307 transitions. [2022-01-31 22:56:36,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 4.698412698412699) internal successors, (296), 62 states have internal predecessors, (296), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:36,431 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 307 transitions. [2022-01-31 22:56:36,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2022-01-31 22:56:36,432 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:56:36,432 INFO L514 BasicCegarLoop]: trace histogram [52, 51, 51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:56:36,432 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-01-31 22:56:36,432 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:56:36,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:56:36,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1618793110, now seen corresponding path program 51 times [2022-01-31 22:56:36,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:56:36,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [923450486] [2022-01-31 22:56:36,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:56:36,435 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:56:36,435 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:56:36,435 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:56:36,437 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:56:36,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:37,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:56:37,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:37,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:56:37,688 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:56:37,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [923450486] [2022-01-31 22:56:37,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [923450486] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:56:37,688 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:56:37,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [64] imperfect sequences [] total 64 [2022-01-31 22:56:37,688 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412913655] [2022-01-31 22:56:37,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:56:37,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-01-31 22:56:37,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:56:37,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-01-31 22:56:37,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1955, Invalid=2077, Unknown=0, NotChecked=0, Total=4032 [2022-01-31 22:56:37,691 INFO L87 Difference]: Start difference. First operand 306 states and 307 transitions. Second operand has 64 states, 64 states have (on average 4.703125) internal successors, (301), 63 states have internal predecessors, (301), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:37,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:56:37,962 INFO L93 Difference]: Finished difference Result 321 states and 323 transitions. [2022-01-31 22:56:37,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-01-31 22:56:37,962 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 4.703125) internal successors, (301), 63 states have internal predecessors, (301), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 304 [2022-01-31 22:56:37,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:56:37,964 INFO L225 Difference]: With dead ends: 321 [2022-01-31 22:56:37,964 INFO L226 Difference]: Without dead ends: 314 [2022-01-31 22:56:37,964 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1955, Invalid=2077, Unknown=0, NotChecked=0, Total=4032 [2022-01-31 22:56:37,965 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 285 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:56:37,965 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [285 Valid, 301 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:56:37,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2022-01-31 22:56:38,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 311. [2022-01-31 22:56:38,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 307 states have (on average 1.006514657980456) internal successors, (309), 307 states have internal predecessors, (309), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:38,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 312 transitions. [2022-01-31 22:56:38,052 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 312 transitions. Word has length 304 [2022-01-31 22:56:38,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:56:38,053 INFO L470 AbstractCegarLoop]: Abstraction has 311 states and 312 transitions. [2022-01-31 22:56:38,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 4.703125) internal successors, (301), 63 states have internal predecessors, (301), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:38,053 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 312 transitions. [2022-01-31 22:56:38,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2022-01-31 22:56:38,054 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:56:38,054 INFO L514 BasicCegarLoop]: trace histogram [53, 52, 52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:56:38,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-01-31 22:56:38,054 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:56:38,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:56:38,054 INFO L85 PathProgramCache]: Analyzing trace with hash 1353723185, now seen corresponding path program 52 times [2022-01-31 22:56:38,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:56:38,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [752021947] [2022-01-31 22:56:38,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:56:38,080 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:56:38,080 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:56:38,080 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:56:38,083 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:56:38,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:39,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:56:39,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:39,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:56:39,399 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:56:39,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [752021947] [2022-01-31 22:56:39,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [752021947] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:56:39,400 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:56:39,400 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [65] imperfect sequences [] total 65 [2022-01-31 22:56:39,400 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85955159] [2022-01-31 22:56:39,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:56:39,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2022-01-31 22:56:39,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:56:39,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2022-01-31 22:56:39,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2018, Invalid=2142, Unknown=0, NotChecked=0, Total=4160 [2022-01-31 22:56:39,402 INFO L87 Difference]: Start difference. First operand 311 states and 312 transitions. Second operand has 65 states, 65 states have (on average 4.707692307692308) internal successors, (306), 64 states have internal predecessors, (306), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:39,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:56:39,691 INFO L93 Difference]: Finished difference Result 326 states and 328 transitions. [2022-01-31 22:56:39,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-01-31 22:56:39,691 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 4.707692307692308) internal successors, (306), 64 states have internal predecessors, (306), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 309 [2022-01-31 22:56:39,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:56:39,692 INFO L225 Difference]: With dead ends: 326 [2022-01-31 22:56:39,692 INFO L226 Difference]: Without dead ends: 319 [2022-01-31 22:56:39,693 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2018, Invalid=2142, Unknown=0, NotChecked=0, Total=4160 [2022-01-31 22:56:39,693 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 285 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 22:56:39,693 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [285 Valid, 266 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 22:56:39,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2022-01-31 22:56:39,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 316. [2022-01-31 22:56:39,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 312 states have (on average 1.0064102564102564) internal successors, (314), 312 states have internal predecessors, (314), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:39,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 317 transitions. [2022-01-31 22:56:39,785 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 317 transitions. Word has length 309 [2022-01-31 22:56:39,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:56:39,785 INFO L470 AbstractCegarLoop]: Abstraction has 316 states and 317 transitions. [2022-01-31 22:56:39,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 4.707692307692308) internal successors, (306), 64 states have internal predecessors, (306), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:39,785 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 317 transitions. [2022-01-31 22:56:39,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2022-01-31 22:56:39,786 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:56:39,786 INFO L514 BasicCegarLoop]: trace histogram [54, 53, 53, 53, 53, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:56:39,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-01-31 22:56:39,786 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:56:39,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:56:39,787 INFO L85 PathProgramCache]: Analyzing trace with hash 621034358, now seen corresponding path program 53 times [2022-01-31 22:56:39,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:56:39,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [767108973] [2022-01-31 22:56:39,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:56:39,790 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:56:39,790 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:56:39,790 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:56:39,792 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:56:39,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:41,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:56:41,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:41,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:56:41,329 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:56:41,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [767108973] [2022-01-31 22:56:41,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [767108973] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:56:41,330 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:56:41,330 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [66] imperfect sequences [] total 66 [2022-01-31 22:56:41,330 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907268343] [2022-01-31 22:56:41,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:56:41,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2022-01-31 22:56:41,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:56:41,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2022-01-31 22:56:41,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2082, Invalid=2208, Unknown=0, NotChecked=0, Total=4290 [2022-01-31 22:56:41,331 INFO L87 Difference]: Start difference. First operand 316 states and 317 transitions. Second operand has 66 states, 66 states have (on average 4.712121212121212) internal successors, (311), 65 states have internal predecessors, (311), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:41,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:56:41,635 INFO L93 Difference]: Finished difference Result 331 states and 333 transitions. [2022-01-31 22:56:41,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-01-31 22:56:41,636 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 4.712121212121212) internal successors, (311), 65 states have internal predecessors, (311), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 314 [2022-01-31 22:56:41,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:56:41,637 INFO L225 Difference]: With dead ends: 331 [2022-01-31 22:56:41,637 INFO L226 Difference]: Without dead ends: 324 [2022-01-31 22:56:41,638 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2082, Invalid=2208, Unknown=0, NotChecked=0, Total=4290 [2022-01-31 22:56:41,638 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 243 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 323 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 22:56:41,638 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [243 Valid, 323 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 22:56:41,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2022-01-31 22:56:41,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 321. [2022-01-31 22:56:41,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 317 states have (on average 1.0063091482649842) internal successors, (319), 317 states have internal predecessors, (319), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:41,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 322 transitions. [2022-01-31 22:56:41,734 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 322 transitions. Word has length 314 [2022-01-31 22:56:41,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:56:41,734 INFO L470 AbstractCegarLoop]: Abstraction has 321 states and 322 transitions. [2022-01-31 22:56:41,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 4.712121212121212) internal successors, (311), 65 states have internal predecessors, (311), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:41,734 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 322 transitions. [2022-01-31 22:56:41,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2022-01-31 22:56:41,735 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:56:41,735 INFO L514 BasicCegarLoop]: trace histogram [55, 54, 54, 54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:56:41,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-01-31 22:56:41,736 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:56:41,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:56:41,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1053249617, now seen corresponding path program 54 times [2022-01-31 22:56:41,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:56:41,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [107980568] [2022-01-31 22:56:41,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:56:41,738 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:56:41,739 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:56:41,739 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:56:41,742 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:56:41,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:43,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:56:43,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:43,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:56:43,400 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:56:43,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [107980568] [2022-01-31 22:56:43,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [107980568] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:56:43,400 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:56:43,400 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [67] imperfect sequences [] total 67 [2022-01-31 22:56:43,400 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500846653] [2022-01-31 22:56:43,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:56:43,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2022-01-31 22:56:43,401 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:56:43,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2022-01-31 22:56:43,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2147, Invalid=2275, Unknown=0, NotChecked=0, Total=4422 [2022-01-31 22:56:43,402 INFO L87 Difference]: Start difference. First operand 321 states and 322 transitions. Second operand has 67 states, 67 states have (on average 4.7164179104477615) internal successors, (316), 66 states have internal predecessors, (316), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:43,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:56:43,678 INFO L93 Difference]: Finished difference Result 336 states and 338 transitions. [2022-01-31 22:56:43,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-01-31 22:56:43,678 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 4.7164179104477615) internal successors, (316), 66 states have internal predecessors, (316), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 319 [2022-01-31 22:56:43,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:56:43,679 INFO L225 Difference]: With dead ends: 336 [2022-01-31 22:56:43,680 INFO L226 Difference]: Without dead ends: 329 [2022-01-31 22:56:43,680 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2147, Invalid=2275, Unknown=0, NotChecked=0, Total=4422 [2022-01-31 22:56:43,680 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 318 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:56:43,681 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [318 Valid, 324 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:56:43,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2022-01-31 22:56:43,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 326. [2022-01-31 22:56:43,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 322 states have (on average 1.0062111801242235) internal successors, (324), 322 states have internal predecessors, (324), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:43,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 327 transitions. [2022-01-31 22:56:43,781 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 327 transitions. Word has length 319 [2022-01-31 22:56:43,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:56:43,782 INFO L470 AbstractCegarLoop]: Abstraction has 326 states and 327 transitions. [2022-01-31 22:56:43,782 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 4.7164179104477615) internal successors, (316), 66 states have internal predecessors, (316), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:43,782 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 327 transitions. [2022-01-31 22:56:43,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2022-01-31 22:56:43,783 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:56:43,783 INFO L514 BasicCegarLoop]: trace histogram [56, 55, 55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:56:43,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-01-31 22:56:43,783 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:56:43,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:56:43,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1569066070, now seen corresponding path program 55 times [2022-01-31 22:56:43,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:56:43,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [197591189] [2022-01-31 22:56:43,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:56:43,805 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:56:43,805 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:56:43,805 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:56:43,808 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:56:43,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:44,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:56:44,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:44,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:56:44,988 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:56:44,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [197591189] [2022-01-31 22:56:44,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [197591189] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:56:44,989 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:56:44,989 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [68] imperfect sequences [] total 68 [2022-01-31 22:56:44,989 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304382451] [2022-01-31 22:56:44,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:56:44,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2022-01-31 22:56:44,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:56:44,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2022-01-31 22:56:44,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2213, Invalid=2343, Unknown=0, NotChecked=0, Total=4556 [2022-01-31 22:56:44,991 INFO L87 Difference]: Start difference. First operand 326 states and 327 transitions. Second operand has 68 states, 68 states have (on average 4.720588235294118) internal successors, (321), 67 states have internal predecessors, (321), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:45,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:56:45,264 INFO L93 Difference]: Finished difference Result 341 states and 343 transitions. [2022-01-31 22:56:45,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-01-31 22:56:45,264 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 4.720588235294118) internal successors, (321), 67 states have internal predecessors, (321), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 324 [2022-01-31 22:56:45,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:56:45,265 INFO L225 Difference]: With dead ends: 341 [2022-01-31 22:56:45,266 INFO L226 Difference]: Without dead ends: 334 [2022-01-31 22:56:45,266 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=2213, Invalid=2343, Unknown=0, NotChecked=0, Total=4556 [2022-01-31 22:56:45,266 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 309 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:56:45,266 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [309 Valid, 327 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:56:45,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2022-01-31 22:56:45,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 331. [2022-01-31 22:56:45,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 327 states have (on average 1.0061162079510704) internal successors, (329), 327 states have internal predecessors, (329), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:45,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 332 transitions. [2022-01-31 22:56:45,444 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 332 transitions. Word has length 324 [2022-01-31 22:56:45,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:56:45,444 INFO L470 AbstractCegarLoop]: Abstraction has 331 states and 332 transitions. [2022-01-31 22:56:45,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 4.720588235294118) internal successors, (321), 67 states have internal predecessors, (321), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:45,445 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 332 transitions. [2022-01-31 22:56:45,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2022-01-31 22:56:45,446 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:56:45,446 INFO L514 BasicCegarLoop]: trace histogram [57, 56, 56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:56:45,446 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-01-31 22:56:45,446 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:56:45,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:56:45,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1658516623, now seen corresponding path program 56 times [2022-01-31 22:56:45,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:56:45,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [61409675] [2022-01-31 22:56:45,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:56:45,473 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:56:45,473 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:56:45,473 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:56:45,476 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:56:45,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:47,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:56:47,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:47,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:56:47,148 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:56:47,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [61409675] [2022-01-31 22:56:47,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [61409675] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:56:47,148 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:56:47,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [69] imperfect sequences [] total 69 [2022-01-31 22:56:47,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827499858] [2022-01-31 22:56:47,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:56:47,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2022-01-31 22:56:47,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:56:47,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2022-01-31 22:56:47,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2280, Invalid=2412, Unknown=0, NotChecked=0, Total=4692 [2022-01-31 22:56:47,150 INFO L87 Difference]: Start difference. First operand 331 states and 332 transitions. Second operand has 69 states, 69 states have (on average 4.72463768115942) internal successors, (326), 68 states have internal predecessors, (326), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:47,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:56:47,462 INFO L93 Difference]: Finished difference Result 346 states and 348 transitions. [2022-01-31 22:56:47,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-01-31 22:56:47,462 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 4.72463768115942) internal successors, (326), 68 states have internal predecessors, (326), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 329 [2022-01-31 22:56:47,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:56:47,463 INFO L225 Difference]: With dead ends: 346 [2022-01-31 22:56:47,463 INFO L226 Difference]: Without dead ends: 339 [2022-01-31 22:56:47,464 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2280, Invalid=2412, Unknown=0, NotChecked=0, Total=4692 [2022-01-31 22:56:47,464 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 270 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 22:56:47,464 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [270 Valid, 315 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 22:56:47,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2022-01-31 22:56:47,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 336. [2022-01-31 22:56:47,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 332 states have (on average 1.0060240963855422) internal successors, (334), 332 states have internal predecessors, (334), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:47,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 337 transitions. [2022-01-31 22:56:47,574 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 337 transitions. Word has length 329 [2022-01-31 22:56:47,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:56:47,574 INFO L470 AbstractCegarLoop]: Abstraction has 336 states and 337 transitions. [2022-01-31 22:56:47,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 4.72463768115942) internal successors, (326), 68 states have internal predecessors, (326), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:47,575 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 337 transitions. [2022-01-31 22:56:47,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2022-01-31 22:56:47,576 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:56:47,576 INFO L514 BasicCegarLoop]: trace histogram [58, 57, 57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:56:47,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-01-31 22:56:47,576 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:56:47,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:56:47,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1038072522, now seen corresponding path program 57 times [2022-01-31 22:56:47,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:56:47,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1482726486] [2022-01-31 22:56:47,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:56:47,578 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:56:47,579 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:56:47,579 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:56:47,582 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:56:47,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:49,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:56:49,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:49,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:56:49,088 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:56:49,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1482726486] [2022-01-31 22:56:49,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1482726486] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:56:49,088 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:56:49,088 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [70] imperfect sequences [] total 70 [2022-01-31 22:56:49,088 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352137542] [2022-01-31 22:56:49,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:56:49,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2022-01-31 22:56:49,088 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:56:49,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2022-01-31 22:56:49,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2348, Invalid=2482, Unknown=0, NotChecked=0, Total=4830 [2022-01-31 22:56:49,089 INFO L87 Difference]: Start difference. First operand 336 states and 337 transitions. Second operand has 70 states, 70 states have (on average 4.728571428571429) internal successors, (331), 69 states have internal predecessors, (331), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:49,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:56:49,401 INFO L93 Difference]: Finished difference Result 351 states and 353 transitions. [2022-01-31 22:56:49,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-01-31 22:56:49,401 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 4.728571428571429) internal successors, (331), 69 states have internal predecessors, (331), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 334 [2022-01-31 22:56:49,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:56:49,402 INFO L225 Difference]: With dead ends: 351 [2022-01-31 22:56:49,402 INFO L226 Difference]: Without dead ends: 344 [2022-01-31 22:56:49,403 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=2348, Invalid=2482, Unknown=0, NotChecked=0, Total=4830 [2022-01-31 22:56:49,403 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 276 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 22:56:49,403 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [276 Valid, 338 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 22:56:49,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2022-01-31 22:56:49,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 341. [2022-01-31 22:56:49,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 337 states have (on average 1.0059347181008902) internal successors, (339), 337 states have internal predecessors, (339), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:49,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 342 transitions. [2022-01-31 22:56:49,517 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 342 transitions. Word has length 334 [2022-01-31 22:56:49,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:56:49,518 INFO L470 AbstractCegarLoop]: Abstraction has 341 states and 342 transitions. [2022-01-31 22:56:49,518 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 4.728571428571429) internal successors, (331), 69 states have internal predecessors, (331), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:49,518 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 342 transitions. [2022-01-31 22:56:49,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2022-01-31 22:56:49,519 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:56:49,519 INFO L514 BasicCegarLoop]: trace histogram [59, 58, 58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:56:49,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-01-31 22:56:49,519 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:56:49,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:56:49,520 INFO L85 PathProgramCache]: Analyzing trace with hash 376135313, now seen corresponding path program 58 times [2022-01-31 22:56:49,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:56:49,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1652576493] [2022-01-31 22:56:49,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:56:49,522 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:56:49,522 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:56:49,522 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:56:49,525 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:56:49,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:51,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:56:51,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:51,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:56:51,240 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:56:51,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1652576493] [2022-01-31 22:56:51,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1652576493] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:56:51,240 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:56:51,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [71] imperfect sequences [] total 71 [2022-01-31 22:56:51,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529005533] [2022-01-31 22:56:51,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:56:51,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2022-01-31 22:56:51,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:56:51,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2022-01-31 22:56:51,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2417, Invalid=2553, Unknown=0, NotChecked=0, Total=4970 [2022-01-31 22:56:51,243 INFO L87 Difference]: Start difference. First operand 341 states and 342 transitions. Second operand has 71 states, 71 states have (on average 4.732394366197183) internal successors, (336), 70 states have internal predecessors, (336), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:51,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:56:51,590 INFO L93 Difference]: Finished difference Result 356 states and 358 transitions. [2022-01-31 22:56:51,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-01-31 22:56:51,590 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 4.732394366197183) internal successors, (336), 70 states have internal predecessors, (336), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 339 [2022-01-31 22:56:51,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:56:51,591 INFO L225 Difference]: With dead ends: 356 [2022-01-31 22:56:51,591 INFO L226 Difference]: Without dead ends: 349 [2022-01-31 22:56:51,592 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2417, Invalid=2553, Unknown=0, NotChecked=0, Total=4970 [2022-01-31 22:56:51,592 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 378 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 378 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 22:56:51,592 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [378 Valid, 324 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 22:56:51,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2022-01-31 22:56:51,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 346. [2022-01-31 22:56:51,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 342 states have (on average 1.0058479532163742) internal successors, (344), 342 states have internal predecessors, (344), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:51,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 347 transitions. [2022-01-31 22:56:51,711 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 347 transitions. Word has length 339 [2022-01-31 22:56:51,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:56:51,711 INFO L470 AbstractCegarLoop]: Abstraction has 346 states and 347 transitions. [2022-01-31 22:56:51,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 4.732394366197183) internal successors, (336), 70 states have internal predecessors, (336), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:51,712 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 347 transitions. [2022-01-31 22:56:51,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2022-01-31 22:56:51,713 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:56:51,713 INFO L514 BasicCegarLoop]: trace histogram [60, 59, 59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:56:51,713 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-01-31 22:56:51,713 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:56:51,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:56:51,713 INFO L85 PathProgramCache]: Analyzing trace with hash -42932714, now seen corresponding path program 59 times [2022-01-31 22:56:51,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:56:51,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [330750512] [2022-01-31 22:56:51,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:56:51,716 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:56:51,717 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:56:51,717 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:56:51,719 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:56:51,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:52,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:56:52,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:52,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:56:52,819 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:56:52,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [330750512] [2022-01-31 22:56:52,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [330750512] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:56:52,820 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:56:52,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [72] imperfect sequences [] total 72 [2022-01-31 22:56:52,820 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141612094] [2022-01-31 22:56:52,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:56:52,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2022-01-31 22:56:52,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:56:52,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2022-01-31 22:56:52,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2487, Invalid=2625, Unknown=0, NotChecked=0, Total=5112 [2022-01-31 22:56:52,822 INFO L87 Difference]: Start difference. First operand 346 states and 347 transitions. Second operand has 72 states, 72 states have (on average 4.736111111111111) internal successors, (341), 71 states have internal predecessors, (341), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:53,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:56:53,158 INFO L93 Difference]: Finished difference Result 361 states and 363 transitions. [2022-01-31 22:56:53,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-01-31 22:56:53,159 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 4.736111111111111) internal successors, (341), 71 states have internal predecessors, (341), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 344 [2022-01-31 22:56:53,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:56:53,160 INFO L225 Difference]: With dead ends: 361 [2022-01-31 22:56:53,160 INFO L226 Difference]: Without dead ends: 354 [2022-01-31 22:56:53,160 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=2487, Invalid=2625, Unknown=0, NotChecked=0, Total=5112 [2022-01-31 22:56:53,160 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 243 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 22:56:53,161 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [243 Valid, 343 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 22:56:53,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2022-01-31 22:56:53,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 351. [2022-01-31 22:56:53,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 347 states have (on average 1.005763688760807) internal successors, (349), 347 states have internal predecessors, (349), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:53,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 352 transitions. [2022-01-31 22:56:53,286 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 352 transitions. Word has length 344 [2022-01-31 22:56:53,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:56:53,286 INFO L470 AbstractCegarLoop]: Abstraction has 351 states and 352 transitions. [2022-01-31 22:56:53,286 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 4.736111111111111) internal successors, (341), 71 states have internal predecessors, (341), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:53,286 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 352 transitions. [2022-01-31 22:56:53,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2022-01-31 22:56:53,287 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:56:53,287 INFO L514 BasicCegarLoop]: trace histogram [61, 60, 60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:56:53,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-01-31 22:56:53,288 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:56:53,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:56:53,288 INFO L85 PathProgramCache]: Analyzing trace with hash -222541391, now seen corresponding path program 60 times [2022-01-31 22:56:53,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:56:53,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [78130819] [2022-01-31 22:56:53,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:56:53,290 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:56:53,290 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:56:53,290 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:56:53,294 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:56:53,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:54,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:56:54,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:54,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:56:54,938 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:56:54,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [78130819] [2022-01-31 22:56:54,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [78130819] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:56:54,938 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:56:54,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [73] imperfect sequences [] total 73 [2022-01-31 22:56:54,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606352702] [2022-01-31 22:56:54,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:56:54,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2022-01-31 22:56:54,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:56:54,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2022-01-31 22:56:54,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2558, Invalid=2698, Unknown=0, NotChecked=0, Total=5256 [2022-01-31 22:56:54,940 INFO L87 Difference]: Start difference. First operand 351 states and 352 transitions. Second operand has 73 states, 73 states have (on average 4.739726027397261) internal successors, (346), 72 states have internal predecessors, (346), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:55,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:56:55,294 INFO L93 Difference]: Finished difference Result 366 states and 368 transitions. [2022-01-31 22:56:55,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-01-31 22:56:55,294 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 4.739726027397261) internal successors, (346), 72 states have internal predecessors, (346), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 349 [2022-01-31 22:56:55,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:56:55,295 INFO L225 Difference]: With dead ends: 366 [2022-01-31 22:56:55,295 INFO L226 Difference]: Without dead ends: 359 [2022-01-31 22:56:55,296 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2558, Invalid=2698, Unknown=0, NotChecked=0, Total=5256 [2022-01-31 22:56:55,296 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 351 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 22:56:55,296 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [351 Valid, 290 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 22:56:55,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2022-01-31 22:56:55,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 356. [2022-01-31 22:56:55,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 352 states have (on average 1.0056818181818181) internal successors, (354), 352 states have internal predecessors, (354), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:55,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 357 transitions. [2022-01-31 22:56:55,425 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 357 transitions. Word has length 349 [2022-01-31 22:56:55,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:56:55,426 INFO L470 AbstractCegarLoop]: Abstraction has 356 states and 357 transitions. [2022-01-31 22:56:55,426 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 4.739726027397261) internal successors, (346), 72 states have internal predecessors, (346), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:55,426 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 357 transitions. [2022-01-31 22:56:55,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2022-01-31 22:56:55,427 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:56:55,427 INFO L514 BasicCegarLoop]: trace histogram [62, 61, 61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:56:55,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-01-31 22:56:55,427 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:56:55,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:56:55,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1936331018, now seen corresponding path program 61 times [2022-01-31 22:56:55,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:56:55,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1800719735] [2022-01-31 22:56:55,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:56:55,433 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:56:55,433 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:56:55,433 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:56:55,437 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:56:55,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:56,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:56:56,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:56,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:56:56,710 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:56:56,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1800719735] [2022-01-31 22:56:56,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1800719735] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:56:56,710 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:56:56,710 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [74] imperfect sequences [] total 74 [2022-01-31 22:56:56,710 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157165703] [2022-01-31 22:56:56,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:56:56,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2022-01-31 22:56:56,710 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:56:56,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2022-01-31 22:56:56,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2630, Invalid=2772, Unknown=0, NotChecked=0, Total=5402 [2022-01-31 22:56:56,712 INFO L87 Difference]: Start difference. First operand 356 states and 357 transitions. Second operand has 74 states, 74 states have (on average 4.743243243243243) internal successors, (351), 73 states have internal predecessors, (351), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:57,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:56:57,021 INFO L93 Difference]: Finished difference Result 371 states and 373 transitions. [2022-01-31 22:56:57,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-01-31 22:56:57,021 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 4.743243243243243) internal successors, (351), 73 states have internal predecessors, (351), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 354 [2022-01-31 22:56:57,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:56:57,022 INFO L225 Difference]: With dead ends: 371 [2022-01-31 22:56:57,022 INFO L226 Difference]: Without dead ends: 364 [2022-01-31 22:56:57,023 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2630, Invalid=2772, Unknown=0, NotChecked=0, Total=5402 [2022-01-31 22:56:57,023 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 300 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:56:57,023 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [300 Valid, 303 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:56:57,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2022-01-31 22:56:57,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 361. [2022-01-31 22:56:57,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 357 states have (on average 1.0056022408963585) internal successors, (359), 357 states have internal predecessors, (359), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:57,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 362 transitions. [2022-01-31 22:56:57,161 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 362 transitions. Word has length 354 [2022-01-31 22:56:57,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:56:57,161 INFO L470 AbstractCegarLoop]: Abstraction has 361 states and 362 transitions. [2022-01-31 22:56:57,161 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 4.743243243243243) internal successors, (351), 73 states have internal predecessors, (351), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:57,161 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 362 transitions. [2022-01-31 22:56:57,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2022-01-31 22:56:57,162 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:56:57,163 INFO L514 BasicCegarLoop]: trace histogram [63, 62, 62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:56:57,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2022-01-31 22:56:57,163 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:56:57,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:56:57,163 INFO L85 PathProgramCache]: Analyzing trace with hash 934923473, now seen corresponding path program 62 times [2022-01-31 22:56:57,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:56:57,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [933344638] [2022-01-31 22:56:57,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:56:57,166 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:56:57,166 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:56:57,166 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:56:57,169 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:56:57,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:58,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:56:58,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:58,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:56:58,912 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:56:58,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [933344638] [2022-01-31 22:56:58,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [933344638] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:56:58,912 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:56:58,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [75] imperfect sequences [] total 75 [2022-01-31 22:56:58,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722220044] [2022-01-31 22:56:58,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:56:58,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2022-01-31 22:56:58,913 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:56:58,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2022-01-31 22:56:58,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2703, Invalid=2847, Unknown=0, NotChecked=0, Total=5550 [2022-01-31 22:56:58,914 INFO L87 Difference]: Start difference. First operand 361 states and 362 transitions. Second operand has 75 states, 75 states have (on average 4.746666666666667) internal successors, (356), 74 states have internal predecessors, (356), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:59,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:56:59,288 INFO L93 Difference]: Finished difference Result 376 states and 378 transitions. [2022-01-31 22:56:59,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-01-31 22:56:59,289 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 4.746666666666667) internal successors, (356), 74 states have internal predecessors, (356), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 359 [2022-01-31 22:56:59,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:56:59,290 INFO L225 Difference]: With dead ends: 376 [2022-01-31 22:56:59,290 INFO L226 Difference]: Without dead ends: 369 [2022-01-31 22:56:59,291 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2703, Invalid=2847, Unknown=0, NotChecked=0, Total=5550 [2022-01-31 22:56:59,291 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 279 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 22:56:59,291 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [279 Valid, 356 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 22:56:59,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2022-01-31 22:56:59,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 366. [2022-01-31 22:56:59,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 362 states have (on average 1.0055248618784531) internal successors, (364), 362 states have internal predecessors, (364), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:59,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 367 transitions. [2022-01-31 22:56:59,431 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 367 transitions. Word has length 359 [2022-01-31 22:56:59,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:56:59,432 INFO L470 AbstractCegarLoop]: Abstraction has 366 states and 367 transitions. [2022-01-31 22:56:59,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 4.746666666666667) internal successors, (356), 74 states have internal predecessors, (356), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:59,432 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 367 transitions. [2022-01-31 22:56:59,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2022-01-31 22:56:59,433 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:56:59,433 INFO L514 BasicCegarLoop]: trace histogram [64, 63, 63, 63, 63, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:56:59,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2022-01-31 22:56:59,433 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:56:59,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:56:59,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1624416298, now seen corresponding path program 63 times [2022-01-31 22:56:59,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:56:59,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1155012984] [2022-01-31 22:56:59,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:56:59,439 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:56:59,439 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:56:59,439 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:56:59,443 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:56:59,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:57:00,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:57:00,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:57:00,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:57:00,651 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:57:00,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1155012984] [2022-01-31 22:57:00,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1155012984] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:57:00,651 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:57:00,651 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [76] imperfect sequences [] total 76 [2022-01-31 22:57:00,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612951220] [2022-01-31 22:57:00,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:57:00,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2022-01-31 22:57:00,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:57:00,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2022-01-31 22:57:00,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2777, Invalid=2923, Unknown=0, NotChecked=0, Total=5700 [2022-01-31 22:57:00,653 INFO L87 Difference]: Start difference. First operand 366 states and 367 transitions. Second operand has 76 states, 76 states have (on average 4.75) internal successors, (361), 75 states have internal predecessors, (361), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:00,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:57:00,983 INFO L93 Difference]: Finished difference Result 381 states and 383 transitions. [2022-01-31 22:57:00,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-01-31 22:57:00,983 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 4.75) internal successors, (361), 75 states have internal predecessors, (361), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 364 [2022-01-31 22:57:00,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:57:00,984 INFO L225 Difference]: With dead ends: 381 [2022-01-31 22:57:00,984 INFO L226 Difference]: Without dead ends: 374 [2022-01-31 22:57:00,985 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2777, Invalid=2923, Unknown=0, NotChecked=0, Total=5700 [2022-01-31 22:57:00,985 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 291 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:57:00,985 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [291 Valid, 277 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:57:00,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2022-01-31 22:57:01,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 371. [2022-01-31 22:57:01,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 367 states have (on average 1.005449591280654) internal successors, (369), 367 states have internal predecessors, (369), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:01,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 372 transitions. [2022-01-31 22:57:01,133 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 372 transitions. Word has length 364 [2022-01-31 22:57:01,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:57:01,133 INFO L470 AbstractCegarLoop]: Abstraction has 371 states and 372 transitions. [2022-01-31 22:57:01,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 4.75) internal successors, (361), 75 states have internal predecessors, (361), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:01,134 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 372 transitions. [2022-01-31 22:57:01,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2022-01-31 22:57:01,135 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:57:01,135 INFO L514 BasicCegarLoop]: trace histogram [65, 64, 64, 64, 64, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:57:01,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2022-01-31 22:57:01,135 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:57:01,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:57:01,135 INFO L85 PathProgramCache]: Analyzing trace with hash -930748431, now seen corresponding path program 64 times [2022-01-31 22:57:01,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:57:01,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2013098654] [2022-01-31 22:57:01,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:57:01,139 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:57:01,139 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:57:01,139 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:57:01,143 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:57:01,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:57:02,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:57:02,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:57:02,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:57:02,690 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:57:02,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2013098654] [2022-01-31 22:57:02,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2013098654] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:57:02,690 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:57:02,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [77] imperfect sequences [] total 77 [2022-01-31 22:57:02,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847287469] [2022-01-31 22:57:02,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:57:02,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2022-01-31 22:57:02,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:57:02,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2022-01-31 22:57:02,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2852, Invalid=3000, Unknown=0, NotChecked=0, Total=5852 [2022-01-31 22:57:02,694 INFO L87 Difference]: Start difference. First operand 371 states and 372 transitions. Second operand has 77 states, 77 states have (on average 4.753246753246753) internal successors, (366), 76 states have internal predecessors, (366), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:03,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:57:03,028 INFO L93 Difference]: Finished difference Result 386 states and 388 transitions. [2022-01-31 22:57:03,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-01-31 22:57:03,028 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 4.753246753246753) internal successors, (366), 76 states have internal predecessors, (366), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 369 [2022-01-31 22:57:03,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:57:03,029 INFO L225 Difference]: With dead ends: 386 [2022-01-31 22:57:03,029 INFO L226 Difference]: Without dead ends: 379 [2022-01-31 22:57:03,030 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=2852, Invalid=3000, Unknown=0, NotChecked=0, Total=5852 [2022-01-31 22:57:03,031 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 336 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:57:03,031 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [336 Valid, 338 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:57:03,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2022-01-31 22:57:03,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 376. [2022-01-31 22:57:03,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 372 states have (on average 1.0053763440860215) internal successors, (374), 372 states have internal predecessors, (374), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:03,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 377 transitions. [2022-01-31 22:57:03,211 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 377 transitions. Word has length 369 [2022-01-31 22:57:03,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:57:03,211 INFO L470 AbstractCegarLoop]: Abstraction has 376 states and 377 transitions. [2022-01-31 22:57:03,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 4.753246753246753) internal successors, (366), 76 states have internal predecessors, (366), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:03,211 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 377 transitions. [2022-01-31 22:57:03,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2022-01-31 22:57:03,213 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:57:03,213 INFO L514 BasicCegarLoop]: trace histogram [66, 65, 65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:57:03,213 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2022-01-31 22:57:03,213 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:57:03,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:57:03,214 INFO L85 PathProgramCache]: Analyzing trace with hash -145409866, now seen corresponding path program 65 times [2022-01-31 22:57:03,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:57:03,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [619342807] [2022-01-31 22:57:03,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:57:03,217 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:57:03,217 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:57:03,217 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:57:03,222 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:57:03,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:57:04,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:57:04,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:57:04,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:57:04,521 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:57:04,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [619342807] [2022-01-31 22:57:04,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [619342807] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:57:04,521 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:57:04,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [78] imperfect sequences [] total 78 [2022-01-31 22:57:04,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191426567] [2022-01-31 22:57:04,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:57:04,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2022-01-31 22:57:04,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:57:04,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2022-01-31 22:57:04,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2928, Invalid=3078, Unknown=0, NotChecked=0, Total=6006 [2022-01-31 22:57:04,524 INFO L87 Difference]: Start difference. First operand 376 states and 377 transitions. Second operand has 78 states, 78 states have (on average 4.756410256410256) internal successors, (371), 77 states have internal predecessors, (371), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:04,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:57:04,906 INFO L93 Difference]: Finished difference Result 391 states and 393 transitions. [2022-01-31 22:57:04,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-01-31 22:57:04,906 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 78 states have (on average 4.756410256410256) internal successors, (371), 77 states have internal predecessors, (371), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 374 [2022-01-31 22:57:04,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:57:04,907 INFO L225 Difference]: With dead ends: 391 [2022-01-31 22:57:04,907 INFO L226 Difference]: Without dead ends: 384 [2022-01-31 22:57:04,908 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2928, Invalid=3078, Unknown=0, NotChecked=0, Total=6006 [2022-01-31 22:57:04,908 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 312 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:57:04,908 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [312 Valid, 332 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:57:04,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2022-01-31 22:57:05,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 381. [2022-01-31 22:57:05,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 377 states have (on average 1.0053050397877985) internal successors, (379), 377 states have internal predecessors, (379), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:05,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 382 transitions. [2022-01-31 22:57:05,068 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 382 transitions. Word has length 374 [2022-01-31 22:57:05,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:57:05,068 INFO L470 AbstractCegarLoop]: Abstraction has 381 states and 382 transitions. [2022-01-31 22:57:05,068 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 78 states have (on average 4.756410256410256) internal successors, (371), 77 states have internal predecessors, (371), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:05,068 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 382 transitions. [2022-01-31 22:57:05,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2022-01-31 22:57:05,069 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:57:05,070 INFO L514 BasicCegarLoop]: trace histogram [67, 66, 66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:57:05,070 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2022-01-31 22:57:05,070 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:57:05,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:57:05,070 INFO L85 PathProgramCache]: Analyzing trace with hash -2050843887, now seen corresponding path program 66 times [2022-01-31 22:57:05,070 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:57:05,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2127975389] [2022-01-31 22:57:05,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:57:05,072 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:57:05,072 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:57:05,073 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:57:05,076 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:57:05,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:57:07,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:57:07,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:57:07,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:57:07,122 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:57:07,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2127975389] [2022-01-31 22:57:07,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2127975389] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:57:07,123 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:57:07,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [79] imperfect sequences [] total 79 [2022-01-31 22:57:07,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473471259] [2022-01-31 22:57:07,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:57:07,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2022-01-31 22:57:07,123 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:57:07,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2022-01-31 22:57:07,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3005, Invalid=3157, Unknown=0, NotChecked=0, Total=6162 [2022-01-31 22:57:07,125 INFO L87 Difference]: Start difference. First operand 381 states and 382 transitions. Second operand has 79 states, 79 states have (on average 4.7594936708860756) internal successors, (376), 78 states have internal predecessors, (376), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:07,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:57:07,530 INFO L93 Difference]: Finished difference Result 396 states and 398 transitions. [2022-01-31 22:57:07,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-01-31 22:57:07,530 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 79 states have (on average 4.7594936708860756) internal successors, (376), 78 states have internal predecessors, (376), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 379 [2022-01-31 22:57:07,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:57:07,533 INFO L225 Difference]: With dead ends: 396 [2022-01-31 22:57:07,533 INFO L226 Difference]: Without dead ends: 389 [2022-01-31 22:57:07,533 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=3005, Invalid=3157, Unknown=0, NotChecked=0, Total=6162 [2022-01-31 22:57:07,534 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 285 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 22:57:07,534 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [285 Valid, 353 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 22:57:07,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2022-01-31 22:57:07,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 386. [2022-01-31 22:57:07,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 382 states have (on average 1.0052356020942408) internal successors, (384), 382 states have internal predecessors, (384), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:07,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 387 transitions. [2022-01-31 22:57:07,699 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 387 transitions. Word has length 379 [2022-01-31 22:57:07,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:57:07,699 INFO L470 AbstractCegarLoop]: Abstraction has 386 states and 387 transitions. [2022-01-31 22:57:07,699 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 79 states have (on average 4.7594936708860756) internal successors, (376), 78 states have internal predecessors, (376), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:07,699 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 387 transitions. [2022-01-31 22:57:07,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2022-01-31 22:57:07,700 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:57:07,701 INFO L514 BasicCegarLoop]: trace histogram [68, 67, 67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:57:07,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2022-01-31 22:57:07,701 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:57:07,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:57:07,701 INFO L85 PathProgramCache]: Analyzing trace with hash -911509098, now seen corresponding path program 67 times [2022-01-31 22:57:07,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:57:07,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [374086873] [2022-01-31 22:57:07,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:57:07,703 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:57:07,703 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:57:07,703 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:57:07,707 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:57:07,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:57:09,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:57:09,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:57:09,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:57:09,186 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:57:09,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [374086873] [2022-01-31 22:57:09,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [374086873] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:57:09,187 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:57:09,187 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [80] imperfect sequences [] total 80 [2022-01-31 22:57:09,187 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363364022] [2022-01-31 22:57:09,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:57:09,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2022-01-31 22:57:09,187 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:57:09,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2022-01-31 22:57:09,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3083, Invalid=3237, Unknown=0, NotChecked=0, Total=6320 [2022-01-31 22:57:09,188 INFO L87 Difference]: Start difference. First operand 386 states and 387 transitions. Second operand has 80 states, 80 states have (on average 4.7625) internal successors, (381), 79 states have internal predecessors, (381), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:09,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:57:09,542 INFO L93 Difference]: Finished difference Result 401 states and 403 transitions. [2022-01-31 22:57:09,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-01-31 22:57:09,542 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 80 states have (on average 4.7625) internal successors, (381), 79 states have internal predecessors, (381), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 384 [2022-01-31 22:57:09,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:57:09,543 INFO L225 Difference]: With dead ends: 401 [2022-01-31 22:57:09,543 INFO L226 Difference]: Without dead ends: 394 [2022-01-31 22:57:09,544 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=3083, Invalid=3237, Unknown=0, NotChecked=0, Total=6320 [2022-01-31 22:57:09,547 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 348 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 348 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:57:09,552 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [348 Valid, 329 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:57:09,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2022-01-31 22:57:09,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 391. [2022-01-31 22:57:09,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 387 states have (on average 1.0051679586563307) internal successors, (389), 387 states have internal predecessors, (389), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:09,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 392 transitions. [2022-01-31 22:57:09,725 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 392 transitions. Word has length 384 [2022-01-31 22:57:09,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:57:09,726 INFO L470 AbstractCegarLoop]: Abstraction has 391 states and 392 transitions. [2022-01-31 22:57:09,726 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 80 states have (on average 4.7625) internal successors, (381), 79 states have internal predecessors, (381), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:09,726 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 392 transitions. [2022-01-31 22:57:09,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2022-01-31 22:57:09,727 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:57:09,727 INFO L514 BasicCegarLoop]: trace histogram [69, 68, 68, 68, 68, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:57:09,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2022-01-31 22:57:09,727 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:57:09,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:57:09,728 INFO L85 PathProgramCache]: Analyzing trace with hash 1838278193, now seen corresponding path program 68 times [2022-01-31 22:57:09,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:57:09,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [420173421] [2022-01-31 22:57:09,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:57:09,730 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:57:09,730 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:57:09,736 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:57:09,740 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:57:09,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:57:11,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:57:11,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:57:11,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:57:11,416 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:57:11,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [420173421] [2022-01-31 22:57:11,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [420173421] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:57:11,416 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:57:11,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [81] imperfect sequences [] total 81 [2022-01-31 22:57:11,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564309692] [2022-01-31 22:57:11,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:57:11,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2022-01-31 22:57:11,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:57:11,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2022-01-31 22:57:11,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3162, Invalid=3318, Unknown=0, NotChecked=0, Total=6480 [2022-01-31 22:57:11,418 INFO L87 Difference]: Start difference. First operand 391 states and 392 transitions. Second operand has 81 states, 81 states have (on average 4.765432098765432) internal successors, (386), 80 states have internal predecessors, (386), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:11,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:57:11,790 INFO L93 Difference]: Finished difference Result 406 states and 408 transitions. [2022-01-31 22:57:11,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2022-01-31 22:57:11,791 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 81 states have (on average 4.765432098765432) internal successors, (386), 80 states have internal predecessors, (386), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 389 [2022-01-31 22:57:11,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:57:11,792 INFO L225 Difference]: With dead ends: 406 [2022-01-31 22:57:11,792 INFO L226 Difference]: Without dead ends: 399 [2022-01-31 22:57:11,793 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=3162, Invalid=3318, Unknown=0, NotChecked=0, Total=6480 [2022-01-31 22:57:11,793 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 306 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:57:11,793 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [306 Valid, 349 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:57:11,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2022-01-31 22:57:11,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 396. [2022-01-31 22:57:11,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 392 states have (on average 1.0051020408163265) internal successors, (394), 392 states have internal predecessors, (394), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:11,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 397 transitions. [2022-01-31 22:57:11,992 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 397 transitions. Word has length 389 [2022-01-31 22:57:11,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:57:11,992 INFO L470 AbstractCegarLoop]: Abstraction has 396 states and 397 transitions. [2022-01-31 22:57:11,992 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 81 states have (on average 4.765432098765432) internal successors, (386), 80 states have internal predecessors, (386), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:11,993 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 397 transitions. [2022-01-31 22:57:11,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2022-01-31 22:57:11,994 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:57:11,994 INFO L514 BasicCegarLoop]: trace histogram [70, 69, 69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:57:11,994 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2022-01-31 22:57:11,994 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:57:11,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:57:11,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1655823754, now seen corresponding path program 69 times [2022-01-31 22:57:11,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:57:11,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1640990001] [2022-01-31 22:57:11,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:57:11,998 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:57:11,998 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:57:11,998 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:57:12,002 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:57:12,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:57:13,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:57:13,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:57:13,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:57:13,374 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:57:13,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1640990001] [2022-01-31 22:57:13,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1640990001] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:57:13,375 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:57:13,375 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [82] imperfect sequences [] total 82 [2022-01-31 22:57:13,375 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271914244] [2022-01-31 22:57:13,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:57:13,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2022-01-31 22:57:13,375 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:57:13,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2022-01-31 22:57:13,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3242, Invalid=3400, Unknown=0, NotChecked=0, Total=6642 [2022-01-31 22:57:13,377 INFO L87 Difference]: Start difference. First operand 396 states and 397 transitions. Second operand has 82 states, 82 states have (on average 4.7682926829268295) internal successors, (391), 81 states have internal predecessors, (391), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:13,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:57:13,780 INFO L93 Difference]: Finished difference Result 411 states and 413 transitions. [2022-01-31 22:57:13,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2022-01-31 22:57:13,780 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 82 states have (on average 4.7682926829268295) internal successors, (391), 81 states have internal predecessors, (391), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 394 [2022-01-31 22:57:13,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:57:13,781 INFO L225 Difference]: With dead ends: 411 [2022-01-31 22:57:13,782 INFO L226 Difference]: Without dead ends: 404 [2022-01-31 22:57:13,782 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=3242, Invalid=3400, Unknown=0, NotChecked=0, Total=6642 [2022-01-31 22:57:13,782 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 369 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:57:13,782 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [369 Valid, 382 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:57:13,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2022-01-31 22:57:13,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 401. [2022-01-31 22:57:13,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 397 states have (on average 1.0050377833753148) internal successors, (399), 397 states have internal predecessors, (399), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:13,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 402 transitions. [2022-01-31 22:57:13,973 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 402 transitions. Word has length 394 [2022-01-31 22:57:13,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:57:13,973 INFO L470 AbstractCegarLoop]: Abstraction has 401 states and 402 transitions. [2022-01-31 22:57:13,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 82 states, 82 states have (on average 4.7682926829268295) internal successors, (391), 81 states have internal predecessors, (391), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:13,974 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 402 transitions. [2022-01-31 22:57:13,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 400 [2022-01-31 22:57:13,975 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:57:13,975 INFO L514 BasicCegarLoop]: trace histogram [71, 70, 70, 70, 70, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:57:13,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2022-01-31 22:57:13,975 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:57:13,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:57:13,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1147811503, now seen corresponding path program 70 times [2022-01-31 22:57:13,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:57:13,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1572084658] [2022-01-31 22:57:13,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:57:13,980 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:57:13,980 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:57:13,981 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:57:13,984 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:57:14,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:57:15,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:57:15,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:57:15,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:57:15,368 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:57:15,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1572084658] [2022-01-31 22:57:15,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1572084658] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:57:15,369 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:57:15,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [83] imperfect sequences [] total 83 [2022-01-31 22:57:15,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850046654] [2022-01-31 22:57:15,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:57:15,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2022-01-31 22:57:15,369 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:57:15,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2022-01-31 22:57:15,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3323, Invalid=3483, Unknown=0, NotChecked=0, Total=6806 [2022-01-31 22:57:15,370 INFO L87 Difference]: Start difference. First operand 401 states and 402 transitions. Second operand has 83 states, 83 states have (on average 4.771084337349397) internal successors, (396), 82 states have internal predecessors, (396), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:15,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:57:15,767 INFO L93 Difference]: Finished difference Result 416 states and 418 transitions. [2022-01-31 22:57:15,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2022-01-31 22:57:15,767 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 83 states have (on average 4.771084337349397) internal successors, (396), 82 states have internal predecessors, (396), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 399 [2022-01-31 22:57:15,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:57:15,769 INFO L225 Difference]: With dead ends: 416 [2022-01-31 22:57:15,769 INFO L226 Difference]: Without dead ends: 409 [2022-01-31 22:57:15,769 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=3323, Invalid=3483, Unknown=0, NotChecked=0, Total=6806 [2022-01-31 22:57:15,769 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 396 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 396 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:57:15,770 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [396 Valid, 352 Invalid, 338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:57:15,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2022-01-31 22:57:15,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 406. [2022-01-31 22:57:15,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 406 states, 402 states have (on average 1.0049751243781095) internal successors, (404), 402 states have internal predecessors, (404), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:15,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 407 transitions. [2022-01-31 22:57:15,963 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 407 transitions. Word has length 399 [2022-01-31 22:57:15,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:57:15,963 INFO L470 AbstractCegarLoop]: Abstraction has 406 states and 407 transitions. [2022-01-31 22:57:15,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 83 states have (on average 4.771084337349397) internal successors, (396), 82 states have internal predecessors, (396), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:15,964 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 407 transitions. [2022-01-31 22:57:15,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2022-01-31 22:57:15,966 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:57:15,966 INFO L514 BasicCegarLoop]: trace histogram [72, 71, 71, 71, 71, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:57:15,966 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2022-01-31 22:57:15,966 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:57:15,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:57:15,966 INFO L85 PathProgramCache]: Analyzing trace with hash 735785814, now seen corresponding path program 71 times [2022-01-31 22:57:15,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:57:15,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1628732880] [2022-01-31 22:57:15,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:57:15,970 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:57:15,970 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:57:15,970 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:57:15,974 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:57:16,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:57:17,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:57:17,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:57:17,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:57:17,882 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:57:17,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1628732880] [2022-01-31 22:57:17,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1628732880] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:57:17,882 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:57:17,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [84] imperfect sequences [] total 84 [2022-01-31 22:57:17,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268669221] [2022-01-31 22:57:17,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:57:17,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2022-01-31 22:57:17,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:57:17,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2022-01-31 22:57:17,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3405, Invalid=3567, Unknown=0, NotChecked=0, Total=6972 [2022-01-31 22:57:17,885 INFO L87 Difference]: Start difference. First operand 406 states and 407 transitions. Second operand has 84 states, 84 states have (on average 4.773809523809524) internal successors, (401), 83 states have internal predecessors, (401), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:18,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:57:18,340 INFO L93 Difference]: Finished difference Result 421 states and 423 transitions. [2022-01-31 22:57:18,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-01-31 22:57:18,340 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 84 states have (on average 4.773809523809524) internal successors, (401), 83 states have internal predecessors, (401), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 404 [2022-01-31 22:57:18,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:57:18,341 INFO L225 Difference]: With dead ends: 421 [2022-01-31 22:57:18,341 INFO L226 Difference]: Without dead ends: 414 [2022-01-31 22:57:18,342 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=3405, Invalid=3567, Unknown=0, NotChecked=0, Total=6972 [2022-01-31 22:57:18,342 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 291 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:57:18,342 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [291 Valid, 417 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:57:18,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2022-01-31 22:57:18,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 411. [2022-01-31 22:57:18,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 411 states, 407 states have (on average 1.0049140049140048) internal successors, (409), 407 states have internal predecessors, (409), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:18,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 412 transitions. [2022-01-31 22:57:18,543 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 412 transitions. Word has length 404 [2022-01-31 22:57:18,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:57:18,543 INFO L470 AbstractCegarLoop]: Abstraction has 411 states and 412 transitions. [2022-01-31 22:57:18,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 84 states have (on average 4.773809523809524) internal successors, (401), 83 states have internal predecessors, (401), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:18,544 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 412 transitions. [2022-01-31 22:57:18,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2022-01-31 22:57:18,545 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:57:18,545 INFO L514 BasicCegarLoop]: trace histogram [73, 72, 72, 72, 72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:57:18,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2022-01-31 22:57:18,546 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:57:18,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:57:18,546 INFO L85 PathProgramCache]: Analyzing trace with hash 149963889, now seen corresponding path program 72 times [2022-01-31 22:57:18,546 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:57:18,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [195279471] [2022-01-31 22:57:18,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:57:18,555 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:57:18,556 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:57:18,556 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:57:18,559 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:57:18,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:57:20,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:57:20,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:57:20,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:57:20,017 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:57:20,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [195279471] [2022-01-31 22:57:20,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [195279471] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:57:20,018 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:57:20,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [85] imperfect sequences [] total 85 [2022-01-31 22:57:20,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731591220] [2022-01-31 22:57:20,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:57:20,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 85 states [2022-01-31 22:57:20,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:57:20,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2022-01-31 22:57:20,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3488, Invalid=3652, Unknown=0, NotChecked=0, Total=7140 [2022-01-31 22:57:20,020 INFO L87 Difference]: Start difference. First operand 411 states and 412 transitions. Second operand has 85 states, 85 states have (on average 4.776470588235294) internal successors, (406), 84 states have internal predecessors, (406), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:20,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:57:20,460 INFO L93 Difference]: Finished difference Result 426 states and 428 transitions. [2022-01-31 22:57:20,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2022-01-31 22:57:20,460 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 85 states have (on average 4.776470588235294) internal successors, (406), 84 states have internal predecessors, (406), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 409 [2022-01-31 22:57:20,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:57:20,462 INFO L225 Difference]: With dead ends: 426 [2022-01-31 22:57:20,462 INFO L226 Difference]: Without dead ends: 419 [2022-01-31 22:57:20,462 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=3488, Invalid=3652, Unknown=0, NotChecked=0, Total=7140 [2022-01-31 22:57:20,462 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 345 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:57:20,462 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [345 Valid, 322 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:57:20,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2022-01-31 22:57:20,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 416. [2022-01-31 22:57:20,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 412 states have (on average 1.0048543689320388) internal successors, (414), 412 states have internal predecessors, (414), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:20,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 417 transitions. [2022-01-31 22:57:20,672 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 417 transitions. Word has length 409 [2022-01-31 22:57:20,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:57:20,672 INFO L470 AbstractCegarLoop]: Abstraction has 416 states and 417 transitions. [2022-01-31 22:57:20,672 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 85 states, 85 states have (on average 4.776470588235294) internal successors, (406), 84 states have internal predecessors, (406), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:20,672 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 417 transitions. [2022-01-31 22:57:20,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2022-01-31 22:57:20,673 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:57:20,674 INFO L514 BasicCegarLoop]: trace histogram [74, 73, 73, 73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:57:20,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2022-01-31 22:57:20,674 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:57:20,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:57:20,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1097903158, now seen corresponding path program 73 times [2022-01-31 22:57:20,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:57:20,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1434690046] [2022-01-31 22:57:20,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:57:20,678 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:57:20,678 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:57:20,678 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:57:20,682 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:57:20,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:57:22,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:57:22,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:57:22,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:57:22,192 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:57:22,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1434690046] [2022-01-31 22:57:22,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1434690046] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:57:22,192 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:57:22,192 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [86] imperfect sequences [] total 86 [2022-01-31 22:57:22,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580898680] [2022-01-31 22:57:22,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:57:22,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2022-01-31 22:57:22,193 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:57:22,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2022-01-31 22:57:22,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3572, Invalid=3738, Unknown=0, NotChecked=0, Total=7310 [2022-01-31 22:57:22,195 INFO L87 Difference]: Start difference. First operand 416 states and 417 transitions. Second operand has 86 states, 86 states have (on average 4.77906976744186) internal successors, (411), 85 states have internal predecessors, (411), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:22,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:57:22,669 INFO L93 Difference]: Finished difference Result 431 states and 433 transitions. [2022-01-31 22:57:22,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-01-31 22:57:22,669 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 4.77906976744186) internal successors, (411), 85 states have internal predecessors, (411), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 414 [2022-01-31 22:57:22,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:57:22,670 INFO L225 Difference]: With dead ends: 431 [2022-01-31 22:57:22,670 INFO L226 Difference]: Without dead ends: 424 [2022-01-31 22:57:22,671 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=3572, Invalid=3738, Unknown=0, NotChecked=0, Total=7310 [2022-01-31 22:57:22,671 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 324 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:57:22,671 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [324 Valid, 353 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:57:22,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2022-01-31 22:57:22,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 421. [2022-01-31 22:57:22,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 421 states, 417 states have (on average 1.0047961630695443) internal successors, (419), 417 states have internal predecessors, (419), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:22,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 422 transitions. [2022-01-31 22:57:22,892 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 422 transitions. Word has length 414 [2022-01-31 22:57:22,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:57:22,892 INFO L470 AbstractCegarLoop]: Abstraction has 421 states and 422 transitions. [2022-01-31 22:57:22,892 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 86 states have (on average 4.77906976744186) internal successors, (411), 85 states have internal predecessors, (411), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:22,892 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 422 transitions. [2022-01-31 22:57:22,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 420 [2022-01-31 22:57:22,894 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:57:22,894 INFO L514 BasicCegarLoop]: trace histogram [75, 74, 74, 74, 74, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:57:22,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2022-01-31 22:57:22,894 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:57:22,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:57:22,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1816352657, now seen corresponding path program 74 times [2022-01-31 22:57:22,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:57:22,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1984251483] [2022-01-31 22:57:22,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:57:22,898 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:57:22,898 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:57:22,898 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:57:22,902 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:57:22,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:57:24,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:57:24,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:57:24,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:57:24,418 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:57:24,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1984251483] [2022-01-31 22:57:24,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1984251483] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:57:24,418 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:57:24,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [87] imperfect sequences [] total 87 [2022-01-31 22:57:24,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075454672] [2022-01-31 22:57:24,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:57:24,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 87 states [2022-01-31 22:57:24,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:57:24,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2022-01-31 22:57:24,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3657, Invalid=3825, Unknown=0, NotChecked=0, Total=7482 [2022-01-31 22:57:24,421 INFO L87 Difference]: Start difference. First operand 421 states and 422 transitions. Second operand has 87 states, 87 states have (on average 4.781609195402299) internal successors, (416), 86 states have internal predecessors, (416), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:24,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:57:24,930 INFO L93 Difference]: Finished difference Result 436 states and 438 transitions. [2022-01-31 22:57:24,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2022-01-31 22:57:24,930 INFO L78 Accepts]: Start accepts. Automaton has has 87 states, 87 states have (on average 4.781609195402299) internal successors, (416), 86 states have internal predecessors, (416), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 419 [2022-01-31 22:57:24,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:57:24,931 INFO L225 Difference]: With dead ends: 436 [2022-01-31 22:57:24,931 INFO L226 Difference]: Without dead ends: 429 [2022-01-31 22:57:24,932 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=3657, Invalid=3825, Unknown=0, NotChecked=0, Total=7482 [2022-01-31 22:57:24,932 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 306 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 22:57:24,932 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [306 Valid, 377 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 22:57:24,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2022-01-31 22:57:25,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 426. [2022-01-31 22:57:25,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 422 states have (on average 1.004739336492891) internal successors, (424), 422 states have internal predecessors, (424), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:25,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 427 transitions. [2022-01-31 22:57:25,157 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 427 transitions. Word has length 419 [2022-01-31 22:57:25,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:57:25,157 INFO L470 AbstractCegarLoop]: Abstraction has 426 states and 427 transitions. [2022-01-31 22:57:25,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 87 states, 87 states have (on average 4.781609195402299) internal successors, (416), 86 states have internal predecessors, (416), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:25,158 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 427 transitions. [2022-01-31 22:57:25,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2022-01-31 22:57:25,159 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:57:25,159 INFO L514 BasicCegarLoop]: trace histogram [76, 75, 75, 75, 75, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:57:25,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2022-01-31 22:57:25,165 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:57:25,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:57:25,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1666413290, now seen corresponding path program 75 times [2022-01-31 22:57:25,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:57:25,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [165161251] [2022-01-31 22:57:25,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:57:25,168 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:57:25,168 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:57:25,168 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:57:25,186 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:57:25,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:57:27,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:57:27,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:57:27,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:57:27,295 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:57:27,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [165161251] [2022-01-31 22:57:27,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [165161251] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:57:27,295 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:57:27,295 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [88] imperfect sequences [] total 88 [2022-01-31 22:57:27,295 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093791623] [2022-01-31 22:57:27,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:57:27,295 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2022-01-31 22:57:27,295 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:57:27,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2022-01-31 22:57:27,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3743, Invalid=3913, Unknown=0, NotChecked=0, Total=7656 [2022-01-31 22:57:27,297 INFO L87 Difference]: Start difference. First operand 426 states and 427 transitions. Second operand has 88 states, 88 states have (on average 4.784090909090909) internal successors, (421), 87 states have internal predecessors, (421), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:27,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:57:27,793 INFO L93 Difference]: Finished difference Result 441 states and 443 transitions. [2022-01-31 22:57:27,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-01-31 22:57:27,793 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 88 states have (on average 4.784090909090909) internal successors, (421), 87 states have internal predecessors, (421), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 424 [2022-01-31 22:57:27,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:57:27,794 INFO L225 Difference]: With dead ends: 441 [2022-01-31 22:57:27,794 INFO L226 Difference]: Without dead ends: 434 [2022-01-31 22:57:27,795 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=3743, Invalid=3913, Unknown=0, NotChecked=0, Total=7656 [2022-01-31 22:57:27,795 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 336 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 22:57:27,795 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [336 Valid, 402 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 22:57:27,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2022-01-31 22:57:28,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 431. [2022-01-31 22:57:28,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 427 states have (on average 1.0046838407494145) internal successors, (429), 427 states have internal predecessors, (429), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:28,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 432 transitions. [2022-01-31 22:57:28,038 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 432 transitions. Word has length 424 [2022-01-31 22:57:28,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:57:28,038 INFO L470 AbstractCegarLoop]: Abstraction has 431 states and 432 transitions. [2022-01-31 22:57:28,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 88 states have (on average 4.784090909090909) internal successors, (421), 87 states have internal predecessors, (421), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:28,038 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 432 transitions. [2022-01-31 22:57:28,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2022-01-31 22:57:28,040 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:57:28,040 INFO L514 BasicCegarLoop]: trace histogram [77, 76, 76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:57:28,040 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2022-01-31 22:57:28,040 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:57:28,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:57:28,041 INFO L85 PathProgramCache]: Analyzing trace with hash -1716452687, now seen corresponding path program 76 times [2022-01-31 22:57:28,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:57:28,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [302655871] [2022-01-31 22:57:28,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:57:28,043 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:57:28,043 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:57:28,043 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:57:28,047 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:57:28,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:57:30,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:57:30,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:57:30,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:57:30,698 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:57:30,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [302655871] [2022-01-31 22:57:30,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [302655871] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:57:30,698 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:57:30,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [89] imperfect sequences [] total 89 [2022-01-31 22:57:30,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709162455] [2022-01-31 22:57:30,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:57:30,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2022-01-31 22:57:30,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:57:30,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2022-01-31 22:57:30,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3830, Invalid=4002, Unknown=0, NotChecked=0, Total=7832 [2022-01-31 22:57:30,700 INFO L87 Difference]: Start difference. First operand 431 states and 432 transitions. Second operand has 89 states, 89 states have (on average 4.786516853932584) internal successors, (426), 88 states have internal predecessors, (426), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:31,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:57:31,212 INFO L93 Difference]: Finished difference Result 446 states and 448 transitions. [2022-01-31 22:57:31,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2022-01-31 22:57:31,212 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 89 states have (on average 4.786516853932584) internal successors, (426), 88 states have internal predecessors, (426), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 429 [2022-01-31 22:57:31,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:57:31,214 INFO L225 Difference]: With dead ends: 446 [2022-01-31 22:57:31,214 INFO L226 Difference]: Without dead ends: 439 [2022-01-31 22:57:31,214 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=3830, Invalid=4002, Unknown=0, NotChecked=0, Total=7832 [2022-01-31 22:57:31,215 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 345 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 22:57:31,215 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [345 Valid, 364 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 22:57:31,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2022-01-31 22:57:31,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 436. [2022-01-31 22:57:31,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 432 states have (on average 1.0046296296296295) internal successors, (434), 432 states have internal predecessors, (434), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:31,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 437 transitions. [2022-01-31 22:57:31,479 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 437 transitions. Word has length 429 [2022-01-31 22:57:31,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:57:31,479 INFO L470 AbstractCegarLoop]: Abstraction has 436 states and 437 transitions. [2022-01-31 22:57:31,480 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 89 states, 89 states have (on average 4.786516853932584) internal successors, (426), 88 states have internal predecessors, (426), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:31,480 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 437 transitions. [2022-01-31 22:57:31,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2022-01-31 22:57:31,481 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:57:31,481 INFO L514 BasicCegarLoop]: trace histogram [78, 77, 77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:57:31,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2022-01-31 22:57:31,482 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:57:31,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:57:31,482 INFO L85 PathProgramCache]: Analyzing trace with hash -827533834, now seen corresponding path program 77 times [2022-01-31 22:57:31,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:57:31,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1352915626] [2022-01-31 22:57:31,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:57:31,484 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:57:31,484 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:57:31,484 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:57:31,489 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:57:31,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:57:34,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:57:34,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:57:34,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:57:34,160 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:57:34,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1352915626] [2022-01-31 22:57:34,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1352915626] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:57:34,160 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:57:34,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [90] imperfect sequences [] total 90 [2022-01-31 22:57:34,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692922275] [2022-01-31 22:57:34,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:57:34,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 90 states [2022-01-31 22:57:34,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:57:34,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2022-01-31 22:57:34,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3918, Invalid=4092, Unknown=0, NotChecked=0, Total=8010 [2022-01-31 22:57:34,163 INFO L87 Difference]: Start difference. First operand 436 states and 437 transitions. Second operand has 90 states, 90 states have (on average 4.788888888888889) internal successors, (431), 89 states have internal predecessors, (431), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:34,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:57:34,696 INFO L93 Difference]: Finished difference Result 451 states and 453 transitions. [2022-01-31 22:57:34,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-01-31 22:57:34,696 INFO L78 Accepts]: Start accepts. Automaton has has 90 states, 90 states have (on average 4.788888888888889) internal successors, (431), 89 states have internal predecessors, (431), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 434 [2022-01-31 22:57:34,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:57:34,698 INFO L225 Difference]: With dead ends: 451 [2022-01-31 22:57:34,698 INFO L226 Difference]: Without dead ends: 444 [2022-01-31 22:57:34,698 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=3918, Invalid=4092, Unknown=0, NotChecked=0, Total=8010 [2022-01-31 22:57:34,698 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 345 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 22:57:34,698 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [345 Valid, 411 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 22:57:34,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2022-01-31 22:57:34,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 441. [2022-01-31 22:57:34,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 437 states have (on average 1.0045766590389016) internal successors, (439), 437 states have internal predecessors, (439), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:34,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 442 transitions. [2022-01-31 22:57:34,960 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 442 transitions. Word has length 434 [2022-01-31 22:57:34,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:57:34,960 INFO L470 AbstractCegarLoop]: Abstraction has 441 states and 442 transitions. [2022-01-31 22:57:34,961 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 90 states, 90 states have (on average 4.788888888888889) internal successors, (431), 89 states have internal predecessors, (431), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:34,961 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 442 transitions. [2022-01-31 22:57:34,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2022-01-31 22:57:34,962 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:57:34,962 INFO L514 BasicCegarLoop]: trace histogram [79, 78, 78, 78, 78, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:57:34,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2022-01-31 22:57:34,963 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:57:34,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:57:34,963 INFO L85 PathProgramCache]: Analyzing trace with hash 47924689, now seen corresponding path program 78 times [2022-01-31 22:57:34,963 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:57:34,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1052360713] [2022-01-31 22:57:34,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:57:34,965 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:57:34,965 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:57:34,966 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:57:34,970 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:57:35,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:57:37,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:57:37,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:57:37,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:57:37,399 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:57:37,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1052360713] [2022-01-31 22:57:37,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1052360713] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:57:37,399 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:57:37,399 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [91] imperfect sequences [] total 91 [2022-01-31 22:57:37,399 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98416962] [2022-01-31 22:57:37,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:57:37,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 91 states [2022-01-31 22:57:37,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:57:37,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2022-01-31 22:57:37,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4007, Invalid=4183, Unknown=0, NotChecked=0, Total=8190 [2022-01-31 22:57:37,402 INFO L87 Difference]: Start difference. First operand 441 states and 442 transitions. Second operand has 91 states, 91 states have (on average 4.791208791208791) internal successors, (436), 90 states have internal predecessors, (436), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:37,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:57:37,895 INFO L93 Difference]: Finished difference Result 456 states and 458 transitions. [2022-01-31 22:57:37,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2022-01-31 22:57:37,895 INFO L78 Accepts]: Start accepts. Automaton has has 91 states, 91 states have (on average 4.791208791208791) internal successors, (436), 90 states have internal predecessors, (436), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 439 [2022-01-31 22:57:37,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:57:37,896 INFO L225 Difference]: With dead ends: 456 [2022-01-31 22:57:37,896 INFO L226 Difference]: Without dead ends: 449 [2022-01-31 22:57:37,897 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=4007, Invalid=4183, Unknown=0, NotChecked=0, Total=8190 [2022-01-31 22:57:37,897 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 357 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:57:37,897 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [357 Valid, 333 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:57:37,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2022-01-31 22:57:38,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 446. [2022-01-31 22:57:38,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 446 states, 442 states have (on average 1.004524886877828) internal successors, (444), 442 states have internal predecessors, (444), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:38,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 447 transitions. [2022-01-31 22:57:38,169 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 447 transitions. Word has length 439 [2022-01-31 22:57:38,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:57:38,169 INFO L470 AbstractCegarLoop]: Abstraction has 446 states and 447 transitions. [2022-01-31 22:57:38,169 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 91 states, 91 states have (on average 4.791208791208791) internal successors, (436), 90 states have internal predecessors, (436), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:38,169 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 447 transitions. [2022-01-31 22:57:38,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 445 [2022-01-31 22:57:38,171 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:57:38,171 INFO L514 BasicCegarLoop]: trace histogram [80, 79, 79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:57:38,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2022-01-31 22:57:38,171 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:57:38,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:57:38,172 INFO L85 PathProgramCache]: Analyzing trace with hash 454002390, now seen corresponding path program 79 times [2022-01-31 22:57:38,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:57:38,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2053493784] [2022-01-31 22:57:38,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:57:38,175 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:57:38,175 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:57:38,175 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:57:38,179 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:57:38,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:57:39,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:57:39,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:57:39,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:57:39,872 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:57:39,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2053493784] [2022-01-31 22:57:39,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2053493784] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:57:39,872 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:57:39,872 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [92] imperfect sequences [] total 92 [2022-01-31 22:57:39,872 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687866757] [2022-01-31 22:57:39,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:57:39,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 92 states [2022-01-31 22:57:39,873 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:57:39,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2022-01-31 22:57:39,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4097, Invalid=4275, Unknown=0, NotChecked=0, Total=8372 [2022-01-31 22:57:39,874 INFO L87 Difference]: Start difference. First operand 446 states and 447 transitions. Second operand has 92 states, 92 states have (on average 4.793478260869565) internal successors, (441), 91 states have internal predecessors, (441), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:40,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:57:40,390 INFO L93 Difference]: Finished difference Result 461 states and 463 transitions. [2022-01-31 22:57:40,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2022-01-31 22:57:40,390 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 92 states have (on average 4.793478260869565) internal successors, (441), 91 states have internal predecessors, (441), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 444 [2022-01-31 22:57:40,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:57:40,391 INFO L225 Difference]: With dead ends: 461 [2022-01-31 22:57:40,391 INFO L226 Difference]: Without dead ends: 454 [2022-01-31 22:57:40,392 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=4097, Invalid=4275, Unknown=0, NotChecked=0, Total=8372 [2022-01-31 22:57:40,393 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 387 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 387 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:57:40,393 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [387 Valid, 369 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:57:40,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2022-01-31 22:57:40,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 451. [2022-01-31 22:57:40,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 451 states, 447 states have (on average 1.0044742729306488) internal successors, (449), 447 states have internal predecessors, (449), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:40,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 452 transitions. [2022-01-31 22:57:40,678 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 452 transitions. Word has length 444 [2022-01-31 22:57:40,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:57:40,679 INFO L470 AbstractCegarLoop]: Abstraction has 451 states and 452 transitions. [2022-01-31 22:57:40,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 92 states, 92 states have (on average 4.793478260869565) internal successors, (441), 91 states have internal predecessors, (441), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:40,679 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 452 transitions. [2022-01-31 22:57:40,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 450 [2022-01-31 22:57:40,681 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:57:40,681 INFO L514 BasicCegarLoop]: trace histogram [81, 80, 80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:57:40,681 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2022-01-31 22:57:40,681 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:57:40,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:57:40,681 INFO L85 PathProgramCache]: Analyzing trace with hash -152821519, now seen corresponding path program 80 times [2022-01-31 22:57:40,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:57:40,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1710025073] [2022-01-31 22:57:40,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:57:40,692 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:57:40,692 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:57:40,692 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:57:40,696 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:57:40,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:57:43,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:57:43,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:57:43,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:57:43,267 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:57:43,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1710025073] [2022-01-31 22:57:43,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1710025073] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:57:43,267 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:57:43,267 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [93] imperfect sequences [] total 93 [2022-01-31 22:57:43,267 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747695404] [2022-01-31 22:57:43,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:57:43,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 93 states [2022-01-31 22:57:43,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:57:43,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2022-01-31 22:57:43,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4188, Invalid=4368, Unknown=0, NotChecked=0, Total=8556 [2022-01-31 22:57:43,269 INFO L87 Difference]: Start difference. First operand 451 states and 452 transitions. Second operand has 93 states, 93 states have (on average 4.795698924731183) internal successors, (446), 92 states have internal predecessors, (446), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:43,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:57:43,769 INFO L93 Difference]: Finished difference Result 466 states and 468 transitions. [2022-01-31 22:57:43,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2022-01-31 22:57:43,770 INFO L78 Accepts]: Start accepts. Automaton has has 93 states, 93 states have (on average 4.795698924731183) internal successors, (446), 92 states have internal predecessors, (446), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 449 [2022-01-31 22:57:43,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:57:43,771 INFO L225 Difference]: With dead ends: 466 [2022-01-31 22:57:43,771 INFO L226 Difference]: Without dead ends: 459 [2022-01-31 22:57:43,772 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=4188, Invalid=4368, Unknown=0, NotChecked=0, Total=8556 [2022-01-31 22:57:43,772 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 423 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 423 SdHoareTripleChecker+Valid, 362 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:57:43,772 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [423 Valid, 362 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:57:43,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2022-01-31 22:57:44,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 456. [2022-01-31 22:57:44,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 456 states, 452 states have (on average 1.0044247787610618) internal successors, (454), 452 states have internal predecessors, (454), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:44,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 457 transitions. [2022-01-31 22:57:44,068 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 457 transitions. Word has length 449 [2022-01-31 22:57:44,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:57:44,068 INFO L470 AbstractCegarLoop]: Abstraction has 456 states and 457 transitions. [2022-01-31 22:57:44,068 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 93 states, 93 states have (on average 4.795698924731183) internal successors, (446), 92 states have internal predecessors, (446), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:44,068 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 457 transitions. [2022-01-31 22:57:44,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2022-01-31 22:57:44,070 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:57:44,070 INFO L514 BasicCegarLoop]: trace histogram [82, 81, 81, 81, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:57:44,070 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2022-01-31 22:57:44,070 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:57:44,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:57:44,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1475518390, now seen corresponding path program 81 times [2022-01-31 22:57:44,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:57:44,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2139693522] [2022-01-31 22:57:44,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:57:44,077 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:57:44,078 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:57:44,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:57:44,082 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:57:44,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:57:46,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:57:46,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:57:46,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:57:46,586 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:57:46,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2139693522] [2022-01-31 22:57:46,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2139693522] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:57:46,586 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:57:46,586 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [94] imperfect sequences [] total 94 [2022-01-31 22:57:46,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500997349] [2022-01-31 22:57:46,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:57:46,586 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2022-01-31 22:57:46,586 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:57:46,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2022-01-31 22:57:46,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4280, Invalid=4462, Unknown=0, NotChecked=0, Total=8742 [2022-01-31 22:57:46,589 INFO L87 Difference]: Start difference. First operand 456 states and 457 transitions. Second operand has 94 states, 94 states have (on average 4.797872340425532) internal successors, (451), 93 states have internal predecessors, (451), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:47,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:57:47,131 INFO L93 Difference]: Finished difference Result 471 states and 473 transitions. [2022-01-31 22:57:47,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2022-01-31 22:57:47,131 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 94 states have (on average 4.797872340425532) internal successors, (451), 93 states have internal predecessors, (451), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 454 [2022-01-31 22:57:47,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:57:47,133 INFO L225 Difference]: With dead ends: 471 [2022-01-31 22:57:47,133 INFO L226 Difference]: Without dead ends: 464 [2022-01-31 22:57:47,133 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=4280, Invalid=4462, Unknown=0, NotChecked=0, Total=8742 [2022-01-31 22:57:47,133 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 342 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:57:47,133 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [342 Valid, 386 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:57:47,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2022-01-31 22:57:47,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 461. [2022-01-31 22:57:47,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 461 states, 457 states have (on average 1.0043763676148796) internal successors, (459), 457 states have internal predecessors, (459), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:47,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 462 transitions. [2022-01-31 22:57:47,432 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 462 transitions. Word has length 454 [2022-01-31 22:57:47,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:57:47,433 INFO L470 AbstractCegarLoop]: Abstraction has 461 states and 462 transitions. [2022-01-31 22:57:47,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 94 states have (on average 4.797872340425532) internal successors, (451), 93 states have internal predecessors, (451), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:47,433 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 462 transitions. [2022-01-31 22:57:47,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 460 [2022-01-31 22:57:47,434 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:57:47,435 INFO L514 BasicCegarLoop]: trace histogram [83, 82, 82, 82, 82, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:57:47,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2022-01-31 22:57:47,435 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:57:47,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:57:47,435 INFO L85 PathProgramCache]: Analyzing trace with hash -1033006063, now seen corresponding path program 82 times [2022-01-31 22:57:47,435 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:57:47,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2146723012] [2022-01-31 22:57:47,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:57:47,437 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:57:47,438 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:57:47,438 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:57:47,442 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:57:47,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:57:49,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:57:49,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:57:49,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:57:49,206 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:57:49,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2146723012] [2022-01-31 22:57:49,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2146723012] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:57:49,206 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:57:49,206 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [95] imperfect sequences [] total 95 [2022-01-31 22:57:49,206 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159882410] [2022-01-31 22:57:49,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:57:49,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 95 states [2022-01-31 22:57:49,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:57:49,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2022-01-31 22:57:49,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4373, Invalid=4557, Unknown=0, NotChecked=0, Total=8930 [2022-01-31 22:57:49,209 INFO L87 Difference]: Start difference. First operand 461 states and 462 transitions. Second operand has 95 states, 95 states have (on average 4.8) internal successors, (456), 94 states have internal predecessors, (456), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:49,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:57:49,763 INFO L93 Difference]: Finished difference Result 476 states and 478 transitions. [2022-01-31 22:57:49,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2022-01-31 22:57:49,763 INFO L78 Accepts]: Start accepts. Automaton has has 95 states, 95 states have (on average 4.8) internal successors, (456), 94 states have internal predecessors, (456), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 459 [2022-01-31 22:57:49,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:57:49,765 INFO L225 Difference]: With dead ends: 476 [2022-01-31 22:57:49,765 INFO L226 Difference]: Without dead ends: 469 [2022-01-31 22:57:49,765 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=4373, Invalid=4557, Unknown=0, NotChecked=0, Total=8930 [2022-01-31 22:57:49,765 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 465 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 465 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 22:57:49,765 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [465 Valid, 353 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 22:57:49,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2022-01-31 22:57:50,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 466. [2022-01-31 22:57:50,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 466 states, 462 states have (on average 1.0043290043290043) internal successors, (464), 462 states have internal predecessors, (464), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:50,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 467 transitions. [2022-01-31 22:57:50,061 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 467 transitions. Word has length 459 [2022-01-31 22:57:50,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:57:50,061 INFO L470 AbstractCegarLoop]: Abstraction has 466 states and 467 transitions. [2022-01-31 22:57:50,062 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 95 states, 95 states have (on average 4.8) internal successors, (456), 94 states have internal predecessors, (456), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:50,062 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 467 transitions. [2022-01-31 22:57:50,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 465 [2022-01-31 22:57:50,063 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:57:50,064 INFO L514 BasicCegarLoop]: trace histogram [84, 83, 83, 83, 83, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:57:50,064 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2022-01-31 22:57:50,064 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:57:50,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:57:50,064 INFO L85 PathProgramCache]: Analyzing trace with hash -839638890, now seen corresponding path program 83 times [2022-01-31 22:57:50,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:57:50,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1096404055] [2022-01-31 22:57:50,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:57:50,066 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:57:50,066 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:57:50,066 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:57:50,080 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:57:50,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:57:52,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:57:52,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:57:52,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:57:52,011 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:57:52,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1096404055] [2022-01-31 22:57:52,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1096404055] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:57:52,011 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:57:52,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [96] imperfect sequences [] total 96 [2022-01-31 22:57:52,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442432354] [2022-01-31 22:57:52,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:57:52,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2022-01-31 22:57:52,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:57:52,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2022-01-31 22:57:52,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4467, Invalid=4653, Unknown=0, NotChecked=0, Total=9120 [2022-01-31 22:57:52,014 INFO L87 Difference]: Start difference. First operand 466 states and 467 transitions. Second operand has 96 states, 96 states have (on average 4.802083333333333) internal successors, (461), 95 states have internal predecessors, (461), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:52,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:57:52,588 INFO L93 Difference]: Finished difference Result 481 states and 483 transitions. [2022-01-31 22:57:52,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-01-31 22:57:52,588 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 4.802083333333333) internal successors, (461), 95 states have internal predecessors, (461), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 464 [2022-01-31 22:57:52,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:57:52,589 INFO L225 Difference]: With dead ends: 481 [2022-01-31 22:57:52,589 INFO L226 Difference]: Without dead ends: 474 [2022-01-31 22:57:52,590 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=4467, Invalid=4653, Unknown=0, NotChecked=0, Total=9120 [2022-01-31 22:57:52,590 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 369 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 22:57:52,590 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [369 Valid, 371 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 22:57:52,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2022-01-31 22:57:52,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 471. [2022-01-31 22:57:52,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 467 states have (on average 1.0042826552462527) internal successors, (469), 467 states have internal predecessors, (469), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:52,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 472 transitions. [2022-01-31 22:57:52,898 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 472 transitions. Word has length 464 [2022-01-31 22:57:52,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:57:52,899 INFO L470 AbstractCegarLoop]: Abstraction has 471 states and 472 transitions. [2022-01-31 22:57:52,899 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 4.802083333333333) internal successors, (461), 95 states have internal predecessors, (461), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:52,899 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 472 transitions. [2022-01-31 22:57:52,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2022-01-31 22:57:52,901 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:57:52,901 INFO L514 BasicCegarLoop]: trace histogram [85, 84, 84, 84, 84, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:57:52,901 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2022-01-31 22:57:52,901 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:57:52,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:57:52,901 INFO L85 PathProgramCache]: Analyzing trace with hash -812015823, now seen corresponding path program 84 times [2022-01-31 22:57:52,901 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:57:52,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [121229956] [2022-01-31 22:57:52,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:57:52,904 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:57:52,904 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:57:52,904 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:57:52,909 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:57:52,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:57:54,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:57:54,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:57:54,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:57:54,969 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:57:54,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [121229956] [2022-01-31 22:57:54,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [121229956] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:57:54,969 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:57:54,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [97] imperfect sequences [] total 97 [2022-01-31 22:57:54,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618868971] [2022-01-31 22:57:54,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:57:54,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2022-01-31 22:57:54,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:57:54,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2022-01-31 22:57:54,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4562, Invalid=4750, Unknown=0, NotChecked=0, Total=9312 [2022-01-31 22:57:54,972 INFO L87 Difference]: Start difference. First operand 471 states and 472 transitions. Second operand has 97 states, 97 states have (on average 4.804123711340206) internal successors, (466), 96 states have internal predecessors, (466), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:55,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:57:55,621 INFO L93 Difference]: Finished difference Result 486 states and 488 transitions. [2022-01-31 22:57:55,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2022-01-31 22:57:55,621 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 97 states have (on average 4.804123711340206) internal successors, (466), 96 states have internal predecessors, (466), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 469 [2022-01-31 22:57:55,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:57:55,623 INFO L225 Difference]: With dead ends: 486 [2022-01-31 22:57:55,623 INFO L226 Difference]: Without dead ends: 479 [2022-01-31 22:57:55,623 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=4562, Invalid=4750, Unknown=0, NotChecked=0, Total=9312 [2022-01-31 22:57:55,639 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 426 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 426 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 22:57:55,639 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [426 Valid, 355 Invalid, 336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 22:57:55,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2022-01-31 22:57:55,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 476. [2022-01-31 22:57:55,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 476 states, 472 states have (on average 1.0042372881355932) internal successors, (474), 472 states have internal predecessors, (474), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:55,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 477 transitions. [2022-01-31 22:57:55,955 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 477 transitions. Word has length 469 [2022-01-31 22:57:55,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:57:55,955 INFO L470 AbstractCegarLoop]: Abstraction has 476 states and 477 transitions. [2022-01-31 22:57:55,955 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 97 states have (on average 4.804123711340206) internal successors, (466), 96 states have internal predecessors, (466), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:55,955 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 477 transitions. [2022-01-31 22:57:55,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 475 [2022-01-31 22:57:55,957 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:57:55,957 INFO L514 BasicCegarLoop]: trace histogram [86, 85, 85, 85, 85, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:57:55,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2022-01-31 22:57:55,957 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:57:55,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:57:55,958 INFO L85 PathProgramCache]: Analyzing trace with hash 405932406, now seen corresponding path program 85 times [2022-01-31 22:57:55,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:57:55,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [422470508] [2022-01-31 22:57:55,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:57:55,960 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:57:55,960 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:57:55,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:57:55,965 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:57:56,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:57:58,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:57:58,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:57:58,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:57:58,570 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:57:58,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [422470508] [2022-01-31 22:57:58,570 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [422470508] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:57:58,570 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:57:58,570 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [98] imperfect sequences [] total 98 [2022-01-31 22:57:58,570 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278194289] [2022-01-31 22:57:58,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:57:58,571 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2022-01-31 22:57:58,571 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:57:58,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2022-01-31 22:57:58,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4658, Invalid=4848, Unknown=0, NotChecked=0, Total=9506 [2022-01-31 22:57:58,574 INFO L87 Difference]: Start difference. First operand 476 states and 477 transitions. Second operand has 98 states, 98 states have (on average 4.8061224489795915) internal successors, (471), 97 states have internal predecessors, (471), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:59,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:57:59,164 INFO L93 Difference]: Finished difference Result 491 states and 493 transitions. [2022-01-31 22:57:59,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2022-01-31 22:57:59,164 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 98 states have (on average 4.8061224489795915) internal successors, (471), 97 states have internal predecessors, (471), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 474 [2022-01-31 22:57:59,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:57:59,165 INFO L225 Difference]: With dead ends: 491 [2022-01-31 22:57:59,165 INFO L226 Difference]: Without dead ends: 484 [2022-01-31 22:57:59,166 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=4658, Invalid=4848, Unknown=0, NotChecked=0, Total=9506 [2022-01-31 22:57:59,168 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 348 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 348 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:57:59,168 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [348 Valid, 377 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 303 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:57:59,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2022-01-31 22:57:59,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 481. [2022-01-31 22:57:59,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 481 states, 477 states have (on average 1.0041928721174005) internal successors, (479), 477 states have internal predecessors, (479), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:59,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 482 transitions. [2022-01-31 22:57:59,514 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 482 transitions. Word has length 474 [2022-01-31 22:57:59,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:57:59,514 INFO L470 AbstractCegarLoop]: Abstraction has 481 states and 482 transitions. [2022-01-31 22:57:59,514 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 98 states have (on average 4.8061224489795915) internal successors, (471), 97 states have internal predecessors, (471), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:57:59,514 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 482 transitions. [2022-01-31 22:57:59,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2022-01-31 22:57:59,516 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:57:59,516 INFO L514 BasicCegarLoop]: trace histogram [87, 86, 86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:57:59,516 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2022-01-31 22:57:59,516 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:57:59,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:57:59,516 INFO L85 PathProgramCache]: Analyzing trace with hash -972406191, now seen corresponding path program 86 times [2022-01-31 22:57:59,517 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:57:59,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [174492326] [2022-01-31 22:57:59,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:57:59,519 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:57:59,519 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:57:59,519 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:57:59,524 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:57:59,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:58:02,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:58:02,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:58:02,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:58:02,124 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:58:02,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [174492326] [2022-01-31 22:58:02,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [174492326] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:58:02,124 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:58:02,124 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [99] imperfect sequences [] total 99 [2022-01-31 22:58:02,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112276333] [2022-01-31 22:58:02,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:58:02,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 99 states [2022-01-31 22:58:02,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:58:02,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2022-01-31 22:58:02,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4755, Invalid=4947, Unknown=0, NotChecked=0, Total=9702 [2022-01-31 22:58:02,128 INFO L87 Difference]: Start difference. First operand 481 states and 482 transitions. Second operand has 99 states, 99 states have (on average 4.808080808080808) internal successors, (476), 98 states have internal predecessors, (476), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:58:02,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:58:02,732 INFO L93 Difference]: Finished difference Result 496 states and 498 transitions. [2022-01-31 22:58:02,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2022-01-31 22:58:02,732 INFO L78 Accepts]: Start accepts. Automaton has has 99 states, 99 states have (on average 4.808080808080808) internal successors, (476), 98 states have internal predecessors, (476), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 479 [2022-01-31 22:58:02,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:58:02,733 INFO L225 Difference]: With dead ends: 496 [2022-01-31 22:58:02,733 INFO L226 Difference]: Without dead ends: 489 [2022-01-31 22:58:02,734 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=4755, Invalid=4947, Unknown=0, NotChecked=0, Total=9702 [2022-01-31 22:58:02,734 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 402 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 22:58:02,734 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [402 Valid, 394 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 22:58:02,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2022-01-31 22:58:03,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 486. [2022-01-31 22:58:03,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 486 states, 482 states have (on average 1.004149377593361) internal successors, (484), 482 states have internal predecessors, (484), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:58:03,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 487 transitions. [2022-01-31 22:58:03,107 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 487 transitions. Word has length 479 [2022-01-31 22:58:03,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:58:03,109 INFO L470 AbstractCegarLoop]: Abstraction has 486 states and 487 transitions. [2022-01-31 22:58:03,109 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 99 states, 99 states have (on average 4.808080808080808) internal successors, (476), 98 states have internal predecessors, (476), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:58:03,109 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 487 transitions. [2022-01-31 22:58:03,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 485 [2022-01-31 22:58:03,111 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:58:03,111 INFO L514 BasicCegarLoop]: trace histogram [88, 87, 87, 87, 87, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:58:03,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2022-01-31 22:58:03,111 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:58:03,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:58:03,111 INFO L85 PathProgramCache]: Analyzing trace with hash 71981654, now seen corresponding path program 87 times [2022-01-31 22:58:03,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:58:03,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1079694288] [2022-01-31 22:58:03,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:58:03,114 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:58:03,114 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:58:03,114 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:58:03,119 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:58:03,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:58:05,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:58:05,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:58:05,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:58:05,058 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:58:05,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1079694288] [2022-01-31 22:58:05,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1079694288] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:58:05,058 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:58:05,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [100] imperfect sequences [] total 100 [2022-01-31 22:58:05,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3809222] [2022-01-31 22:58:05,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:58:05,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 100 states [2022-01-31 22:58:05,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:58:05,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2022-01-31 22:58:05,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4853, Invalid=5047, Unknown=0, NotChecked=0, Total=9900 [2022-01-31 22:58:05,061 INFO L87 Difference]: Start difference. First operand 486 states and 487 transitions. Second operand has 100 states, 100 states have (on average 4.81) internal successors, (481), 99 states have internal predecessors, (481), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:58:05,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:58:05,676 INFO L93 Difference]: Finished difference Result 501 states and 503 transitions. [2022-01-31 22:58:05,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2022-01-31 22:58:05,677 INFO L78 Accepts]: Start accepts. Automaton has has 100 states, 100 states have (on average 4.81) internal successors, (481), 99 states have internal predecessors, (481), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 484 [2022-01-31 22:58:05,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:58:05,678 INFO L225 Difference]: With dead ends: 501 [2022-01-31 22:58:05,679 INFO L226 Difference]: Without dead ends: 494 [2022-01-31 22:58:05,679 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=4853, Invalid=5047, Unknown=0, NotChecked=0, Total=9900 [2022-01-31 22:58:05,679 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 342 mSDsluCounter, 396 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:58:05,679 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [342 Valid, 431 Invalid, 329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:58:05,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2022-01-31 22:58:06,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 491. [2022-01-31 22:58:06,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 491 states, 487 states have (on average 1.004106776180698) internal successors, (489), 487 states have internal predecessors, (489), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:58:06,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 492 transitions. [2022-01-31 22:58:06,062 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 492 transitions. Word has length 484 [2022-01-31 22:58:06,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:58:06,062 INFO L470 AbstractCegarLoop]: Abstraction has 491 states and 492 transitions. [2022-01-31 22:58:06,063 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 100 states, 100 states have (on average 4.81) internal successors, (481), 99 states have internal predecessors, (481), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:58:06,065 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 492 transitions. [2022-01-31 22:58:06,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 490 [2022-01-31 22:58:06,067 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:58:06,067 INFO L514 BasicCegarLoop]: trace histogram [89, 88, 88, 88, 88, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:58:06,067 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2022-01-31 22:58:06,070 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:58:06,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:58:06,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1428062863, now seen corresponding path program 88 times [2022-01-31 22:58:06,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:58:06,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [53801611] [2022-01-31 22:58:06,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:58:06,073 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:58:06,073 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:58:06,073 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:58:06,083 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:58:06,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:58:09,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:58:09,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:58:09,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:58:09,169 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:58:09,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [53801611] [2022-01-31 22:58:09,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [53801611] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:58:09,169 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:58:09,169 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [101] imperfect sequences [] total 101 [2022-01-31 22:58:09,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130497978] [2022-01-31 22:58:09,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:58:09,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 101 states [2022-01-31 22:58:09,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:58:09,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2022-01-31 22:58:09,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4952, Invalid=5148, Unknown=0, NotChecked=0, Total=10100 [2022-01-31 22:58:09,185 INFO L87 Difference]: Start difference. First operand 491 states and 492 transitions. Second operand has 101 states, 101 states have (on average 4.811881188118812) internal successors, (486), 100 states have internal predecessors, (486), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:58:09,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:58:09,865 INFO L93 Difference]: Finished difference Result 506 states and 508 transitions. [2022-01-31 22:58:09,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2022-01-31 22:58:09,866 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 101 states have (on average 4.811881188118812) internal successors, (486), 100 states have internal predecessors, (486), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 489 [2022-01-31 22:58:09,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:58:09,867 INFO L225 Difference]: With dead ends: 506 [2022-01-31 22:58:09,867 INFO L226 Difference]: Without dead ends: 499 [2022-01-31 22:58:09,868 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=4952, Invalid=5148, Unknown=0, NotChecked=0, Total=10100 [2022-01-31 22:58:09,868 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 381 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 381 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 22:58:09,868 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [381 Valid, 392 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 22:58:09,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2022-01-31 22:58:10,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 496. [2022-01-31 22:58:10,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 496 states, 492 states have (on average 1.0040650406504066) internal successors, (494), 492 states have internal predecessors, (494), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:58:10,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 497 transitions. [2022-01-31 22:58:10,252 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 497 transitions. Word has length 489 [2022-01-31 22:58:10,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:58:10,252 INFO L470 AbstractCegarLoop]: Abstraction has 496 states and 497 transitions. [2022-01-31 22:58:10,252 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 101 states, 101 states have (on average 4.811881188118812) internal successors, (486), 100 states have internal predecessors, (486), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:58:10,253 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 497 transitions. [2022-01-31 22:58:10,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 495 [2022-01-31 22:58:10,254 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:58:10,255 INFO L514 BasicCegarLoop]: trace histogram [90, 89, 89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:58:10,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2022-01-31 22:58:10,255 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:58:10,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:58:10,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1918571318, now seen corresponding path program 89 times [2022-01-31 22:58:10,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:58:10,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1836633491] [2022-01-31 22:58:10,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:58:10,258 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:58:10,258 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:58:10,258 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:58:10,263 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:58:10,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:58:13,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:58:13,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:58:13,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:58:13,684 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:58:13,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1836633491] [2022-01-31 22:58:13,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1836633491] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:58:13,684 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:58:13,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [102] imperfect sequences [] total 102 [2022-01-31 22:58:13,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996082884] [2022-01-31 22:58:13,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:58:13,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 102 states [2022-01-31 22:58:13,685 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:58:13,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2022-01-31 22:58:13,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5052, Invalid=5250, Unknown=0, NotChecked=0, Total=10302 [2022-01-31 22:58:13,687 INFO L87 Difference]: Start difference. First operand 496 states and 497 transitions. Second operand has 102 states, 102 states have (on average 4.813725490196078) internal successors, (491), 101 states have internal predecessors, (491), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:58:14,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:58:14,392 INFO L93 Difference]: Finished difference Result 511 states and 513 transitions. [2022-01-31 22:58:14,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2022-01-31 22:58:14,392 INFO L78 Accepts]: Start accepts. Automaton has has 102 states, 102 states have (on average 4.813725490196078) internal successors, (491), 101 states have internal predecessors, (491), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 494 [2022-01-31 22:58:14,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:58:14,393 INFO L225 Difference]: With dead ends: 511 [2022-01-31 22:58:14,393 INFO L226 Difference]: Without dead ends: 504 [2022-01-31 22:58:14,394 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=5052, Invalid=5250, Unknown=0, NotChecked=0, Total=10302 [2022-01-31 22:58:14,398 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 381 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 381 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 22:58:14,398 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [381 Valid, 461 Invalid, 344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 303 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 22:58:14,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2022-01-31 22:58:14,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 501. [2022-01-31 22:58:14,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 501 states, 497 states have (on average 1.0040241448692153) internal successors, (499), 497 states have internal predecessors, (499), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:58:14,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 502 transitions. [2022-01-31 22:58:14,767 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 502 transitions. Word has length 494 [2022-01-31 22:58:14,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:58:14,767 INFO L470 AbstractCegarLoop]: Abstraction has 501 states and 502 transitions. [2022-01-31 22:58:14,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 102 states, 102 states have (on average 4.813725490196078) internal successors, (491), 101 states have internal predecessors, (491), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:58:14,768 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 502 transitions. [2022-01-31 22:58:14,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 500 [2022-01-31 22:58:14,769 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:58:14,770 INFO L514 BasicCegarLoop]: trace histogram [91, 90, 90, 90, 90, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:58:14,770 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2022-01-31 22:58:14,770 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:58:14,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:58:14,770 INFO L85 PathProgramCache]: Analyzing trace with hash 12669073, now seen corresponding path program 90 times [2022-01-31 22:58:14,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:58:14,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [415600463] [2022-01-31 22:58:14,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:58:14,772 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:58:14,773 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:58:14,773 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:58:14,778 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:58:14,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:58:17,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:58:17,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:58:17,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:58:17,282 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:58:17,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [415600463] [2022-01-31 22:58:17,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [415600463] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:58:17,282 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:58:17,282 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [103] imperfect sequences [] total 103 [2022-01-31 22:58:17,282 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111721798] [2022-01-31 22:58:17,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:58:17,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2022-01-31 22:58:17,282 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:58:17,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2022-01-31 22:58:17,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5153, Invalid=5353, Unknown=0, NotChecked=0, Total=10506 [2022-01-31 22:58:17,285 INFO L87 Difference]: Start difference. First operand 501 states and 502 transitions. Second operand has 103 states, 103 states have (on average 4.815533980582524) internal successors, (496), 102 states have internal predecessors, (496), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:58:17,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:58:17,937 INFO L93 Difference]: Finished difference Result 516 states and 518 transitions. [2022-01-31 22:58:17,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2022-01-31 22:58:17,937 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 103 states have (on average 4.815533980582524) internal successors, (496), 102 states have internal predecessors, (496), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 499 [2022-01-31 22:58:17,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:58:17,939 INFO L225 Difference]: With dead ends: 516 [2022-01-31 22:58:17,939 INFO L226 Difference]: Without dead ends: 509 [2022-01-31 22:58:17,939 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=5153, Invalid=5353, Unknown=0, NotChecked=0, Total=10506 [2022-01-31 22:58:17,939 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 354 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 354 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 22:58:17,940 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [354 Valid, 395 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 22:58:17,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2022-01-31 22:58:18,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 506. [2022-01-31 22:58:18,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 506 states, 502 states have (on average 1.00398406374502) internal successors, (504), 502 states have internal predecessors, (504), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:58:18,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 507 transitions. [2022-01-31 22:58:18,324 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 507 transitions. Word has length 499 [2022-01-31 22:58:18,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:58:18,324 INFO L470 AbstractCegarLoop]: Abstraction has 506 states and 507 transitions. [2022-01-31 22:58:18,324 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 103 states, 103 states have (on average 4.815533980582524) internal successors, (496), 102 states have internal predecessors, (496), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:58:18,324 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 507 transitions. [2022-01-31 22:58:18,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 505 [2022-01-31 22:58:18,326 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:58:18,326 INFO L514 BasicCegarLoop]: trace histogram [92, 91, 91, 91, 91, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:58:18,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2022-01-31 22:58:18,327 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:58:18,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:58:18,327 INFO L85 PathProgramCache]: Analyzing trace with hash 889336854, now seen corresponding path program 91 times [2022-01-31 22:58:18,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:58:18,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1463342512] [2022-01-31 22:58:18,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:58:18,329 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:58:18,329 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:58:18,330 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:58:18,334 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:58:18,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:58:20,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:58:20,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:58:20,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:58:20,537 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:58:20,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1463342512] [2022-01-31 22:58:20,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1463342512] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:58:20,537 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:58:20,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [104] imperfect sequences [] total 104 [2022-01-31 22:58:20,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428298236] [2022-01-31 22:58:20,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:58:20,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 104 states [2022-01-31 22:58:20,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:58:20,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2022-01-31 22:58:20,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5255, Invalid=5457, Unknown=0, NotChecked=0, Total=10712 [2022-01-31 22:58:20,542 INFO L87 Difference]: Start difference. First operand 506 states and 507 transitions. Second operand has 104 states, 104 states have (on average 4.8173076923076925) internal successors, (501), 103 states have internal predecessors, (501), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:58:21,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:58:21,250 INFO L93 Difference]: Finished difference Result 521 states and 523 transitions. [2022-01-31 22:58:21,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2022-01-31 22:58:21,250 INFO L78 Accepts]: Start accepts. Automaton has has 104 states, 104 states have (on average 4.8173076923076925) internal successors, (501), 103 states have internal predecessors, (501), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 504 [2022-01-31 22:58:21,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:58:21,252 INFO L225 Difference]: With dead ends: 521 [2022-01-31 22:58:21,252 INFO L226 Difference]: Without dead ends: 514 [2022-01-31 22:58:21,253 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=5255, Invalid=5457, Unknown=0, NotChecked=0, Total=10712 [2022-01-31 22:58:21,253 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 489 mSDsluCounter, 405 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 489 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 22:58:21,253 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [489 Valid, 440 Invalid, 394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 22:58:21,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2022-01-31 22:58:21,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 511. [2022-01-31 22:58:21,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 511 states, 507 states have (on average 1.0039447731755424) internal successors, (509), 507 states have internal predecessors, (509), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:58:21,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 512 transitions. [2022-01-31 22:58:21,656 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 512 transitions. Word has length 504 [2022-01-31 22:58:21,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:58:21,656 INFO L470 AbstractCegarLoop]: Abstraction has 511 states and 512 transitions. [2022-01-31 22:58:21,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 104 states, 104 states have (on average 4.8173076923076925) internal successors, (501), 103 states have internal predecessors, (501), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:58:21,656 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 512 transitions. [2022-01-31 22:58:21,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 510 [2022-01-31 22:58:21,658 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:58:21,658 INFO L514 BasicCegarLoop]: trace histogram [93, 92, 92, 92, 92, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:58:21,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2022-01-31 22:58:21,658 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:58:21,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:58:21,659 INFO L85 PathProgramCache]: Analyzing trace with hash -406078543, now seen corresponding path program 92 times [2022-01-31 22:58:21,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:58:21,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1698523599] [2022-01-31 22:58:21,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:58:21,665 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:58:21,665 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:58:21,665 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:58:21,672 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:58:21,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:58:24,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:58:24,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:58:24,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:58:24,998 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:58:24,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1698523599] [2022-01-31 22:58:24,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1698523599] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:58:24,998 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:58:24,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [105] imperfect sequences [] total 105 [2022-01-31 22:58:24,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809458659] [2022-01-31 22:58:24,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:58:24,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 105 states [2022-01-31 22:58:24,998 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:58:24,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2022-01-31 22:58:25,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5358, Invalid=5562, Unknown=0, NotChecked=0, Total=10920 [2022-01-31 22:58:25,001 INFO L87 Difference]: Start difference. First operand 511 states and 512 transitions. Second operand has 105 states, 105 states have (on average 4.819047619047619) internal successors, (506), 104 states have internal predecessors, (506), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:58:25,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:58:25,863 INFO L93 Difference]: Finished difference Result 526 states and 528 transitions. [2022-01-31 22:58:25,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2022-01-31 22:58:25,864 INFO L78 Accepts]: Start accepts. Automaton has has 105 states, 105 states have (on average 4.819047619047619) internal successors, (506), 104 states have internal predecessors, (506), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 509 [2022-01-31 22:58:25,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:58:25,866 INFO L225 Difference]: With dead ends: 526 [2022-01-31 22:58:25,866 INFO L226 Difference]: Without dead ends: 519 [2022-01-31 22:58:25,867 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=5358, Invalid=5562, Unknown=0, NotChecked=0, Total=10920 [2022-01-31 22:58:25,867 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 375 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 401 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 22:58:25,867 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [375 Valid, 401 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 22:58:25,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2022-01-31 22:58:26,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 516. [2022-01-31 22:58:26,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 516 states, 512 states have (on average 1.00390625) internal successors, (514), 512 states have internal predecessors, (514), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:58:26,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 517 transitions. [2022-01-31 22:58:26,290 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 517 transitions. Word has length 509 [2022-01-31 22:58:26,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:58:26,290 INFO L470 AbstractCegarLoop]: Abstraction has 516 states and 517 transitions. [2022-01-31 22:58:26,290 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 105 states, 105 states have (on average 4.819047619047619) internal successors, (506), 104 states have internal predecessors, (506), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:58:26,290 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 517 transitions. [2022-01-31 22:58:26,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 515 [2022-01-31 22:58:26,292 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:58:26,293 INFO L514 BasicCegarLoop]: trace histogram [94, 93, 93, 93, 93, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:58:26,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2022-01-31 22:58:26,293 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:58:26,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:58:26,293 INFO L85 PathProgramCache]: Analyzing trace with hash -245515018, now seen corresponding path program 93 times [2022-01-31 22:58:26,293 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:58:26,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1759421993] [2022-01-31 22:58:26,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:58:26,299 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:58:26,299 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:58:26,299 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:58:26,305 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:58:26,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:58:29,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:58:29,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:58:29,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:58:29,584 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:58:29,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1759421993] [2022-01-31 22:58:29,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1759421993] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:58:29,584 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:58:29,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [106] imperfect sequences [] total 106 [2022-01-31 22:58:29,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736224875] [2022-01-31 22:58:29,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:58:29,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 106 states [2022-01-31 22:58:29,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:58:29,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2022-01-31 22:58:29,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5462, Invalid=5668, Unknown=0, NotChecked=0, Total=11130 [2022-01-31 22:58:29,588 INFO L87 Difference]: Start difference. First operand 516 states and 517 transitions. Second operand has 106 states, 106 states have (on average 4.820754716981132) internal successors, (511), 105 states have internal predecessors, (511), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:58:30,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:58:30,302 INFO L93 Difference]: Finished difference Result 531 states and 533 transitions. [2022-01-31 22:58:30,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2022-01-31 22:58:30,303 INFO L78 Accepts]: Start accepts. Automaton has has 106 states, 106 states have (on average 4.820754716981132) internal successors, (511), 105 states have internal predecessors, (511), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 514 [2022-01-31 22:58:30,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:58:30,304 INFO L225 Difference]: With dead ends: 531 [2022-01-31 22:58:30,304 INFO L226 Difference]: Without dead ends: 524 [2022-01-31 22:58:30,305 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=5462, Invalid=5668, Unknown=0, NotChecked=0, Total=11130 [2022-01-31 22:58:30,305 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 438 mSDsluCounter, 368 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 438 SdHoareTripleChecker+Valid, 403 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 22:58:30,305 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [438 Valid, 403 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 22:58:30,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2022-01-31 22:58:30,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 521. [2022-01-31 22:58:30,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 521 states, 517 states have (on average 1.0038684719535784) internal successors, (519), 517 states have internal predecessors, (519), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:58:30,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 522 transitions. [2022-01-31 22:58:30,725 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 522 transitions. Word has length 514 [2022-01-31 22:58:30,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:58:30,725 INFO L470 AbstractCegarLoop]: Abstraction has 521 states and 522 transitions. [2022-01-31 22:58:30,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 106 states, 106 states have (on average 4.820754716981132) internal successors, (511), 105 states have internal predecessors, (511), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:58:30,725 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 522 transitions. [2022-01-31 22:58:30,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 520 [2022-01-31 22:58:30,727 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:58:30,727 INFO L514 BasicCegarLoop]: trace histogram [95, 94, 94, 94, 94, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:58:30,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2022-01-31 22:58:30,727 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:58:30,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:58:30,728 INFO L85 PathProgramCache]: Analyzing trace with hash 1034075857, now seen corresponding path program 94 times [2022-01-31 22:58:30,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:58:30,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1501993673] [2022-01-31 22:58:30,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:58:30,731 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:58:30,731 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:58:30,731 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:58:30,736 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:58:30,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:58:33,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:58:33,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:58:33,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:58:33,262 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:58:33,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1501993673] [2022-01-31 22:58:33,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1501993673] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:58:33,262 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:58:33,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [107] imperfect sequences [] total 107 [2022-01-31 22:58:33,263 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191946576] [2022-01-31 22:58:33,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:58:33,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 107 states [2022-01-31 22:58:33,263 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:58:33,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2022-01-31 22:58:33,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5567, Invalid=5775, Unknown=0, NotChecked=0, Total=11342 [2022-01-31 22:58:33,265 INFO L87 Difference]: Start difference. First operand 521 states and 522 transitions. Second operand has 107 states, 107 states have (on average 4.822429906542056) internal successors, (516), 106 states have internal predecessors, (516), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:58:34,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:58:34,052 INFO L93 Difference]: Finished difference Result 536 states and 538 transitions. [2022-01-31 22:58:34,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2022-01-31 22:58:34,053 INFO L78 Accepts]: Start accepts. Automaton has has 107 states, 107 states have (on average 4.822429906542056) internal successors, (516), 106 states have internal predecessors, (516), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 519 [2022-01-31 22:58:34,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:58:34,054 INFO L225 Difference]: With dead ends: 536 [2022-01-31 22:58:34,054 INFO L226 Difference]: Without dead ends: 529 [2022-01-31 22:58:34,055 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=5567, Invalid=5775, Unknown=0, NotChecked=0, Total=11342 [2022-01-31 22:58:34,058 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 387 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 387 SdHoareTripleChecker+Valid, 435 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 22:58:34,058 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [387 Valid, 435 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 22:58:34,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2022-01-31 22:58:34,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 526. [2022-01-31 22:58:34,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 522 states have (on average 1.003831417624521) internal successors, (524), 522 states have internal predecessors, (524), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:58:34,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 527 transitions. [2022-01-31 22:58:34,511 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 527 transitions. Word has length 519 [2022-01-31 22:58:34,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:58:34,512 INFO L470 AbstractCegarLoop]: Abstraction has 526 states and 527 transitions. [2022-01-31 22:58:34,512 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 107 states, 107 states have (on average 4.822429906542056) internal successors, (516), 106 states have internal predecessors, (516), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:58:34,512 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 527 transitions. [2022-01-31 22:58:34,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 525 [2022-01-31 22:58:34,514 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:58:34,514 INFO L514 BasicCegarLoop]: trace histogram [96, 95, 95, 95, 95, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:58:34,514 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2022-01-31 22:58:34,515 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:58:34,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:58:34,515 INFO L85 PathProgramCache]: Analyzing trace with hash -16011818, now seen corresponding path program 95 times [2022-01-31 22:58:34,515 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:58:34,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [516913249] [2022-01-31 22:58:34,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:58:34,518 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:58:34,518 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:58:34,518 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:58:34,524 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:58:34,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:58:36,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:58:36,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:58:36,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:58:36,953 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:58:36,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [516913249] [2022-01-31 22:58:36,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [516913249] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:58:36,953 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:58:36,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [108] imperfect sequences [] total 108 [2022-01-31 22:58:36,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758603916] [2022-01-31 22:58:36,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:58:36,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 108 states [2022-01-31 22:58:36,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:58:36,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2022-01-31 22:58:36,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5673, Invalid=5883, Unknown=0, NotChecked=0, Total=11556 [2022-01-31 22:58:36,956 INFO L87 Difference]: Start difference. First operand 526 states and 527 transitions. Second operand has 108 states, 108 states have (on average 4.824074074074074) internal successors, (521), 107 states have internal predecessors, (521), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:58:37,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:58:37,688 INFO L93 Difference]: Finished difference Result 541 states and 543 transitions. [2022-01-31 22:58:37,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2022-01-31 22:58:37,689 INFO L78 Accepts]: Start accepts. Automaton has has 108 states, 108 states have (on average 4.824074074074074) internal successors, (521), 107 states have internal predecessors, (521), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 524 [2022-01-31 22:58:37,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:58:37,690 INFO L225 Difference]: With dead ends: 541 [2022-01-31 22:58:37,690 INFO L226 Difference]: Without dead ends: 534 [2022-01-31 22:58:37,691 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=5673, Invalid=5883, Unknown=0, NotChecked=0, Total=11556 [2022-01-31 22:58:37,691 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 375 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 22:58:37,692 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [375 Valid, 459 Invalid, 340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 22:58:37,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2022-01-31 22:58:38,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 531. [2022-01-31 22:58:38,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 531 states, 527 states have (on average 1.0037950664136623) internal successors, (529), 527 states have internal predecessors, (529), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:58:38,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 532 transitions. [2022-01-31 22:58:38,156 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 532 transitions. Word has length 524 [2022-01-31 22:58:38,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:58:38,156 INFO L470 AbstractCegarLoop]: Abstraction has 531 states and 532 transitions. [2022-01-31 22:58:38,156 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 108 states, 108 states have (on average 4.824074074074074) internal successors, (521), 107 states have internal predecessors, (521), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:58:38,156 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 532 transitions. [2022-01-31 22:58:38,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 530 [2022-01-31 22:58:38,158 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:58:38,158 INFO L514 BasicCegarLoop]: trace histogram [97, 96, 96, 96, 96, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:58:38,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2022-01-31 22:58:38,158 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:58:38,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:58:38,159 INFO L85 PathProgramCache]: Analyzing trace with hash -1117234703, now seen corresponding path program 96 times [2022-01-31 22:58:38,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:58:38,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1037010385] [2022-01-31 22:58:38,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:58:38,162 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:58:38,163 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:58:38,163 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:58:38,169 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:58:38,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:58:40,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:58:40,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:58:40,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:58:40,486 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:58:40,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1037010385] [2022-01-31 22:58:40,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1037010385] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:58:40,486 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:58:40,487 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [109] imperfect sequences [] total 109 [2022-01-31 22:58:40,487 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067653561] [2022-01-31 22:58:40,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:58:40,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 109 states [2022-01-31 22:58:40,487 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:58:40,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2022-01-31 22:58:40,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5780, Invalid=5992, Unknown=0, NotChecked=0, Total=11772 [2022-01-31 22:58:40,490 INFO L87 Difference]: Start difference. First operand 531 states and 532 transitions. Second operand has 109 states, 109 states have (on average 4.825688073394495) internal successors, (526), 108 states have internal predecessors, (526), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:58:41,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:58:41,280 INFO L93 Difference]: Finished difference Result 546 states and 548 transitions. [2022-01-31 22:58:41,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2022-01-31 22:58:41,281 INFO L78 Accepts]: Start accepts. Automaton has has 109 states, 109 states have (on average 4.825688073394495) internal successors, (526), 108 states have internal predecessors, (526), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 529 [2022-01-31 22:58:41,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:58:41,289 INFO L225 Difference]: With dead ends: 546 [2022-01-31 22:58:41,289 INFO L226 Difference]: Without dead ends: 539 [2022-01-31 22:58:41,289 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=5780, Invalid=5992, Unknown=0, NotChecked=0, Total=11772 [2022-01-31 22:58:41,290 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 384 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 22:58:41,290 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [384 Valid, 448 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 308 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 22:58:41,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2022-01-31 22:58:41,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 536. [2022-01-31 22:58:41,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 536 states, 532 states have (on average 1.0037593984962405) internal successors, (534), 532 states have internal predecessors, (534), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:58:41,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 537 transitions. [2022-01-31 22:58:41,764 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 537 transitions. Word has length 529 [2022-01-31 22:58:41,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:58:41,764 INFO L470 AbstractCegarLoop]: Abstraction has 536 states and 537 transitions. [2022-01-31 22:58:41,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 109 states, 109 states have (on average 4.825688073394495) internal successors, (526), 108 states have internal predecessors, (526), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:58:41,764 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 537 transitions. [2022-01-31 22:58:41,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 535 [2022-01-31 22:58:41,768 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:58:41,769 INFO L514 BasicCegarLoop]: trace histogram [98, 97, 97, 97, 97, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:58:41,769 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2022-01-31 22:58:41,769 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:58:41,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:58:41,769 INFO L85 PathProgramCache]: Analyzing trace with hash 1210713782, now seen corresponding path program 97 times [2022-01-31 22:58:41,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:58:41,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1981430816] [2022-01-31 22:58:41,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:58:41,777 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:58:41,777 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:58:41,777 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:58:41,783 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:58:41,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:58:45,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:58:45,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:58:45,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:58:45,032 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:58:45,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1981430816] [2022-01-31 22:58:45,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1981430816] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:58:45,032 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:58:45,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [110] imperfect sequences [] total 110 [2022-01-31 22:58:45,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719984440] [2022-01-31 22:58:45,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:58:45,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 110 states [2022-01-31 22:58:45,034 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:58:45,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2022-01-31 22:58:45,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5888, Invalid=6102, Unknown=0, NotChecked=0, Total=11990 [2022-01-31 22:58:45,036 INFO L87 Difference]: Start difference. First operand 536 states and 537 transitions. Second operand has 110 states, 110 states have (on average 4.827272727272727) internal successors, (531), 109 states have internal predecessors, (531), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:58:45,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:58:45,865 INFO L93 Difference]: Finished difference Result 551 states and 553 transitions. [2022-01-31 22:58:45,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2022-01-31 22:58:45,866 INFO L78 Accepts]: Start accepts. Automaton has has 110 states, 110 states have (on average 4.827272727272727) internal successors, (531), 109 states have internal predecessors, (531), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 534 [2022-01-31 22:58:45,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:58:45,867 INFO L225 Difference]: With dead ends: 551 [2022-01-31 22:58:45,867 INFO L226 Difference]: Without dead ends: 544 [2022-01-31 22:58:45,868 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=5888, Invalid=6102, Unknown=0, NotChecked=0, Total=11990 [2022-01-31 22:58:45,868 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 396 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 396 SdHoareTripleChecker+Valid, 500 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 22:58:45,868 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [396 Valid, 500 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 22:58:45,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2022-01-31 22:58:46,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 541. [2022-01-31 22:58:46,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 541 states, 537 states have (on average 1.0037243947858474) internal successors, (539), 537 states have internal predecessors, (539), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:58:46,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 542 transitions. [2022-01-31 22:58:46,334 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 542 transitions. Word has length 534 [2022-01-31 22:58:46,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:58:46,334 INFO L470 AbstractCegarLoop]: Abstraction has 541 states and 542 transitions. [2022-01-31 22:58:46,334 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 110 states, 110 states have (on average 4.827272727272727) internal successors, (531), 109 states have internal predecessors, (531), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:58:46,334 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 542 transitions. [2022-01-31 22:58:46,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 540 [2022-01-31 22:58:46,336 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:58:46,337 INFO L514 BasicCegarLoop]: trace histogram [99, 98, 98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:58:46,337 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2022-01-31 22:58:46,337 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:58:46,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:58:46,337 INFO L85 PathProgramCache]: Analyzing trace with hash 532581649, now seen corresponding path program 98 times [2022-01-31 22:58:46,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:58:46,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [427993562] [2022-01-31 22:58:46,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:58:46,339 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:58:46,339 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:58:46,339 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:58:46,345 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:58:46,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:58:49,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:58:49,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:58:49,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:58:49,322 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:58:49,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [427993562] [2022-01-31 22:58:49,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [427993562] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:58:49,333 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:58:49,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [111] imperfect sequences [] total 111 [2022-01-31 22:58:49,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088542421] [2022-01-31 22:58:49,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:58:49,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 111 states [2022-01-31 22:58:49,334 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:58:49,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2022-01-31 22:58:49,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5997, Invalid=6213, Unknown=0, NotChecked=0, Total=12210 [2022-01-31 22:58:49,338 INFO L87 Difference]: Start difference. First operand 541 states and 542 transitions. Second operand has 111 states, 111 states have (on average 4.828828828828829) internal successors, (536), 110 states have internal predecessors, (536), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:58:50,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:58:50,168 INFO L93 Difference]: Finished difference Result 556 states and 558 transitions. [2022-01-31 22:58:50,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2022-01-31 22:58:50,168 INFO L78 Accepts]: Start accepts. Automaton has has 111 states, 111 states have (on average 4.828828828828829) internal successors, (536), 110 states have internal predecessors, (536), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 539 [2022-01-31 22:58:50,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:58:50,169 INFO L225 Difference]: With dead ends: 556 [2022-01-31 22:58:50,169 INFO L226 Difference]: Without dead ends: 549 [2022-01-31 22:58:50,170 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=5997, Invalid=6213, Unknown=0, NotChecked=0, Total=12210 [2022-01-31 22:58:50,170 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 513 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 513 SdHoareTripleChecker+Valid, 452 SdHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 22:58:50,170 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [513 Valid, 452 Invalid, 401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 22:58:50,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2022-01-31 22:58:50,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 546. [2022-01-31 22:58:50,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 546 states, 542 states have (on average 1.003690036900369) internal successors, (544), 542 states have internal predecessors, (544), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:58:50,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 547 transitions. [2022-01-31 22:58:50,670 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 547 transitions. Word has length 539 [2022-01-31 22:58:50,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:58:50,671 INFO L470 AbstractCegarLoop]: Abstraction has 546 states and 547 transitions. [2022-01-31 22:58:50,671 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 111 states, 111 states have (on average 4.828828828828829) internal successors, (536), 110 states have internal predecessors, (536), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:58:50,671 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 547 transitions. [2022-01-31 22:58:50,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 545 [2022-01-31 22:58:50,673 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:58:50,673 INFO L514 BasicCegarLoop]: trace histogram [100, 99, 99, 99, 99, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:58:50,673 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2022-01-31 22:58:50,673 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:58:50,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:58:50,674 INFO L85 PathProgramCache]: Analyzing trace with hash 693553046, now seen corresponding path program 99 times [2022-01-31 22:58:50,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:58:50,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [860854193] [2022-01-31 22:58:50,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:58:50,676 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:58:50,676 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:58:50,676 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:58:50,682 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:58:50,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:58:53,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:58:53,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:58:53,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:58:53,119 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:58:53,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [860854193] [2022-01-31 22:58:53,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [860854193] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:58:53,119 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:58:53,119 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [112] imperfect sequences [] total 112 [2022-01-31 22:58:53,119 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932697332] [2022-01-31 22:58:53,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:58:53,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 112 states [2022-01-31 22:58:53,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:58:53,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2022-01-31 22:58:53,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6107, Invalid=6325, Unknown=0, NotChecked=0, Total=12432 [2022-01-31 22:58:53,122 INFO L87 Difference]: Start difference. First operand 546 states and 547 transitions. Second operand has 112 states, 112 states have (on average 4.830357142857143) internal successors, (541), 111 states have internal predecessors, (541), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:58:53,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:58:53,953 INFO L93 Difference]: Finished difference Result 561 states and 563 transitions. [2022-01-31 22:58:53,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2022-01-31 22:58:53,953 INFO L78 Accepts]: Start accepts. Automaton has has 112 states, 112 states have (on average 4.830357142857143) internal successors, (541), 111 states have internal predecessors, (541), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 544 [2022-01-31 22:58:53,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:58:53,954 INFO L225 Difference]: With dead ends: 561 [2022-01-31 22:58:53,954 INFO L226 Difference]: Without dead ends: 554 [2022-01-31 22:58:53,955 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=6107, Invalid=6325, Unknown=0, NotChecked=0, Total=12432 [2022-01-31 22:58:53,955 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 486 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 486 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 22:58:53,955 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [486 Valid, 421 Invalid, 380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 22:58:53,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2022-01-31 22:58:54,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 551. [2022-01-31 22:58:54,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 551 states, 547 states have (on average 1.0036563071297988) internal successors, (549), 547 states have internal predecessors, (549), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:58:54,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 552 transitions. [2022-01-31 22:58:54,460 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 552 transitions. Word has length 544 [2022-01-31 22:58:54,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:58:54,460 INFO L470 AbstractCegarLoop]: Abstraction has 551 states and 552 transitions. [2022-01-31 22:58:54,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 112 states, 112 states have (on average 4.830357142857143) internal successors, (541), 111 states have internal predecessors, (541), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:58:54,460 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 552 transitions. [2022-01-31 22:58:54,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 550 [2022-01-31 22:58:54,462 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:58:54,462 INFO L514 BasicCegarLoop]: trace histogram [101, 100, 100, 100, 100, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:58:54,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2022-01-31 22:58:54,462 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:58:54,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:58:54,463 INFO L85 PathProgramCache]: Analyzing trace with hash 986142769, now seen corresponding path program 100 times [2022-01-31 22:58:54,463 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:58:54,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [68883974] [2022-01-31 22:58:54,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:58:54,465 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:58:54,465 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:58:54,465 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:58:54,471 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:58:54,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:58:57,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:58:57,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:58:57,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:58:57,906 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:58:57,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [68883974] [2022-01-31 22:58:57,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [68883974] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:58:57,906 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:58:57,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [113] imperfect sequences [] total 113 [2022-01-31 22:58:57,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94922001] [2022-01-31 22:58:57,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:58:57,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 113 states [2022-01-31 22:58:57,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:58:57,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2022-01-31 22:58:57,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6218, Invalid=6438, Unknown=0, NotChecked=0, Total=12656 [2022-01-31 22:58:57,910 INFO L87 Difference]: Start difference. First operand 551 states and 552 transitions. Second operand has 113 states, 113 states have (on average 4.831858407079646) internal successors, (546), 112 states have internal predecessors, (546), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:58:58,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:58:58,729 INFO L93 Difference]: Finished difference Result 566 states and 568 transitions. [2022-01-31 22:58:58,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2022-01-31 22:58:58,730 INFO L78 Accepts]: Start accepts. Automaton has has 113 states, 113 states have (on average 4.831858407079646) internal successors, (546), 112 states have internal predecessors, (546), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 549 [2022-01-31 22:58:58,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:58:58,731 INFO L225 Difference]: With dead ends: 566 [2022-01-31 22:58:58,731 INFO L226 Difference]: Without dead ends: 559 [2022-01-31 22:58:58,732 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=6218, Invalid=6438, Unknown=0, NotChecked=0, Total=12656 [2022-01-31 22:58:58,732 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 450 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 450 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 22:58:58,732 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [450 Valid, 421 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 22:58:58,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2022-01-31 22:58:59,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 556. [2022-01-31 22:58:59,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 556 states, 552 states have (on average 1.0036231884057971) internal successors, (554), 552 states have internal predecessors, (554), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:58:59,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 557 transitions. [2022-01-31 22:58:59,249 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 557 transitions. Word has length 549 [2022-01-31 22:58:59,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:58:59,249 INFO L470 AbstractCegarLoop]: Abstraction has 556 states and 557 transitions. [2022-01-31 22:58:59,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 113 states, 113 states have (on average 4.831858407079646) internal successors, (546), 112 states have internal predecessors, (546), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:58:59,249 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 557 transitions. [2022-01-31 22:58:59,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 555 [2022-01-31 22:58:59,251 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:58:59,251 INFO L514 BasicCegarLoop]: trace histogram [102, 101, 101, 101, 101, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:58:59,252 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2022-01-31 22:58:59,252 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:58:59,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:58:59,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1370484854, now seen corresponding path program 101 times [2022-01-31 22:58:59,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:58:59,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [127800918] [2022-01-31 22:58:59,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:58:59,257 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:58:59,257 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:58:59,258 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:58:59,264 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:58:59,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:59:02,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:59:02,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:59:02,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:59:02,932 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:59:02,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [127800918] [2022-01-31 22:59:02,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [127800918] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:59:02,933 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:59:02,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [114] imperfect sequences [] total 114 [2022-01-31 22:59:02,933 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22356184] [2022-01-31 22:59:02,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:59:02,933 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 114 states [2022-01-31 22:59:02,933 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:59:02,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2022-01-31 22:59:02,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6330, Invalid=6552, Unknown=0, NotChecked=0, Total=12882 [2022-01-31 22:59:02,936 INFO L87 Difference]: Start difference. First operand 556 states and 557 transitions. Second operand has 114 states, 114 states have (on average 4.833333333333333) internal successors, (551), 113 states have internal predecessors, (551), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:59:03,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:59:03,836 INFO L93 Difference]: Finished difference Result 571 states and 573 transitions. [2022-01-31 22:59:03,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2022-01-31 22:59:03,837 INFO L78 Accepts]: Start accepts. Automaton has has 114 states, 114 states have (on average 4.833333333333333) internal successors, (551), 113 states have internal predecessors, (551), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 554 [2022-01-31 22:59:03,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:59:03,838 INFO L225 Difference]: With dead ends: 571 [2022-01-31 22:59:03,838 INFO L226 Difference]: Without dead ends: 564 [2022-01-31 22:59:03,839 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=6330, Invalid=6552, Unknown=0, NotChecked=0, Total=12882 [2022-01-31 22:59:03,839 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 429 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 429 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 22:59:03,840 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [429 Valid, 423 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 22:59:03,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2022-01-31 22:59:04,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 561. [2022-01-31 22:59:04,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 557 states have (on average 1.0035906642728905) internal successors, (559), 557 states have internal predecessors, (559), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:59:04,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 562 transitions. [2022-01-31 22:59:04,406 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 562 transitions. Word has length 554 [2022-01-31 22:59:04,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:59:04,406 INFO L470 AbstractCegarLoop]: Abstraction has 561 states and 562 transitions. [2022-01-31 22:59:04,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 114 states, 114 states have (on average 4.833333333333333) internal successors, (551), 113 states have internal predecessors, (551), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:59:04,407 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 562 transitions. [2022-01-31 22:59:04,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 560 [2022-01-31 22:59:04,409 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:59:04,409 INFO L514 BasicCegarLoop]: trace histogram [103, 102, 102, 102, 102, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:59:04,409 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2022-01-31 22:59:04,409 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:59:04,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:59:04,409 INFO L85 PathProgramCache]: Analyzing trace with hash 572832593, now seen corresponding path program 102 times [2022-01-31 22:59:04,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:59:04,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1107047815] [2022-01-31 22:59:04,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:59:04,412 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:59:04,412 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:59:04,412 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:59:04,419 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:59:04,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:59:08,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:59:08,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:59:08,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:59:08,431 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:59:08,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1107047815] [2022-01-31 22:59:08,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1107047815] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:59:08,431 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:59:08,431 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [115] imperfect sequences [] total 115 [2022-01-31 22:59:08,431 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138765701] [2022-01-31 22:59:08,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:59:08,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 115 states [2022-01-31 22:59:08,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:59:08,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2022-01-31 22:59:08,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6443, Invalid=6667, Unknown=0, NotChecked=0, Total=13110 [2022-01-31 22:59:08,434 INFO L87 Difference]: Start difference. First operand 561 states and 562 transitions. Second operand has 115 states, 115 states have (on average 4.834782608695652) internal successors, (556), 114 states have internal predecessors, (556), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:59:09,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:59:09,375 INFO L93 Difference]: Finished difference Result 576 states and 578 transitions. [2022-01-31 22:59:09,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2022-01-31 22:59:09,375 INFO L78 Accepts]: Start accepts. Automaton has has 115 states, 115 states have (on average 4.834782608695652) internal successors, (556), 114 states have internal predecessors, (556), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 559 [2022-01-31 22:59:09,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:59:09,376 INFO L225 Difference]: With dead ends: 576 [2022-01-31 22:59:09,376 INFO L226 Difference]: Without dead ends: 569 [2022-01-31 22:59:09,377 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=6443, Invalid=6667, Unknown=0, NotChecked=0, Total=13110 [2022-01-31 22:59:09,377 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 507 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 335 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 507 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 22:59:09,377 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [507 Valid, 448 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 335 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 22:59:09,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2022-01-31 22:59:09,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 566. [2022-01-31 22:59:09,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 562 states have (on average 1.00355871886121) internal successors, (564), 562 states have internal predecessors, (564), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:59:09,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 567 transitions. [2022-01-31 22:59:09,935 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 567 transitions. Word has length 559 [2022-01-31 22:59:09,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:59:09,935 INFO L470 AbstractCegarLoop]: Abstraction has 566 states and 567 transitions. [2022-01-31 22:59:09,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 115 states, 115 states have (on average 4.834782608695652) internal successors, (556), 114 states have internal predecessors, (556), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:59:09,935 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 567 transitions. [2022-01-31 22:59:09,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 565 [2022-01-31 22:59:09,937 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:59:09,937 INFO L514 BasicCegarLoop]: trace histogram [104, 103, 103, 103, 103, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:59:09,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2022-01-31 22:59:09,938 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:59:09,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:59:09,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1563197098, now seen corresponding path program 103 times [2022-01-31 22:59:09,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:59:09,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1053429589] [2022-01-31 22:59:09,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:59:09,941 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:59:09,941 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:59:09,941 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:59:09,948 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:59:10,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:59:12,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:59:12,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:59:12,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:59:12,739 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:59:12,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1053429589] [2022-01-31 22:59:12,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1053429589] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:59:12,739 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:59:12,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [116] imperfect sequences [] total 116 [2022-01-31 22:59:12,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127703430] [2022-01-31 22:59:12,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:59:12,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 116 states [2022-01-31 22:59:12,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:59:12,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2022-01-31 22:59:12,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6557, Invalid=6783, Unknown=0, NotChecked=0, Total=13340 [2022-01-31 22:59:12,743 INFO L87 Difference]: Start difference. First operand 566 states and 567 transitions. Second operand has 116 states, 116 states have (on average 4.836206896551724) internal successors, (561), 115 states have internal predecessors, (561), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:59:13,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:59:13,667 INFO L93 Difference]: Finished difference Result 581 states and 583 transitions. [2022-01-31 22:59:13,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2022-01-31 22:59:13,667 INFO L78 Accepts]: Start accepts. Automaton has has 116 states, 116 states have (on average 4.836206896551724) internal successors, (561), 115 states have internal predecessors, (561), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 564 [2022-01-31 22:59:13,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:59:13,668 INFO L225 Difference]: With dead ends: 581 [2022-01-31 22:59:13,668 INFO L226 Difference]: Without dead ends: 574 [2022-01-31 22:59:13,669 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=6557, Invalid=6783, Unknown=0, NotChecked=0, Total=13340 [2022-01-31 22:59:13,669 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 405 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 496 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 22:59:13,669 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [405 Valid, 496 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 327 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 22:59:13,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2022-01-31 22:59:14,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 571. [2022-01-31 22:59:14,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 571 states, 567 states have (on average 1.0035273368606703) internal successors, (569), 567 states have internal predecessors, (569), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:59:14,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 572 transitions. [2022-01-31 22:59:14,236 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 572 transitions. Word has length 564 [2022-01-31 22:59:14,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:59:14,236 INFO L470 AbstractCegarLoop]: Abstraction has 571 states and 572 transitions. [2022-01-31 22:59:14,236 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 116 states, 116 states have (on average 4.836206896551724) internal successors, (561), 115 states have internal predecessors, (561), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:59:14,236 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 572 transitions. [2022-01-31 22:59:14,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 570 [2022-01-31 22:59:14,238 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:59:14,239 INFO L514 BasicCegarLoop]: trace histogram [105, 104, 104, 104, 104, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:59:14,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2022-01-31 22:59:14,239 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:59:14,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:59:14,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1190704753, now seen corresponding path program 104 times [2022-01-31 22:59:14,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:59:14,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [571057576] [2022-01-31 22:59:14,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:59:14,241 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:59:14,241 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:59:14,241 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:59:14,248 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:59:14,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:59:17,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:59:17,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:59:17,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:59:17,185 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:59:17,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [571057576] [2022-01-31 22:59:17,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [571057576] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:59:17,185 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:59:17,185 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [117] imperfect sequences [] total 117 [2022-01-31 22:59:17,186 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627009825] [2022-01-31 22:59:17,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:59:17,186 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 117 states [2022-01-31 22:59:17,186 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:59:17,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2022-01-31 22:59:17,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6672, Invalid=6900, Unknown=0, NotChecked=0, Total=13572 [2022-01-31 22:59:17,189 INFO L87 Difference]: Start difference. First operand 571 states and 572 transitions. Second operand has 117 states, 117 states have (on average 4.837606837606837) internal successors, (566), 116 states have internal predecessors, (566), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:59:18,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:59:18,102 INFO L93 Difference]: Finished difference Result 586 states and 588 transitions. [2022-01-31 22:59:18,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2022-01-31 22:59:18,102 INFO L78 Accepts]: Start accepts. Automaton has has 117 states, 117 states have (on average 4.837606837606837) internal successors, (566), 116 states have internal predecessors, (566), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 569 [2022-01-31 22:59:18,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:59:18,103 INFO L225 Difference]: With dead ends: 586 [2022-01-31 22:59:18,103 INFO L226 Difference]: Without dead ends: 579 [2022-01-31 22:59:18,104 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=6672, Invalid=6900, Unknown=0, NotChecked=0, Total=13572 [2022-01-31 22:59:18,104 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 426 mSDsluCounter, 414 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 426 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 22:59:18,104 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [426 Valid, 449 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 22:59:18,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2022-01-31 22:59:18,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 576. [2022-01-31 22:59:18,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 572 states have (on average 1.0034965034965035) internal successors, (574), 572 states have internal predecessors, (574), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:59:18,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 577 transitions. [2022-01-31 22:59:18,669 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 577 transitions. Word has length 569 [2022-01-31 22:59:18,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:59:18,670 INFO L470 AbstractCegarLoop]: Abstraction has 576 states and 577 transitions. [2022-01-31 22:59:18,670 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 117 states, 117 states have (on average 4.837606837606837) internal successors, (566), 116 states have internal predecessors, (566), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:59:18,670 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 577 transitions. [2022-01-31 22:59:18,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 575 [2022-01-31 22:59:18,672 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:59:18,672 INFO L514 BasicCegarLoop]: trace histogram [106, 105, 105, 105, 105, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:59:18,672 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2022-01-31 22:59:18,673 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:59:18,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:59:18,673 INFO L85 PathProgramCache]: Analyzing trace with hash 283081270, now seen corresponding path program 105 times [2022-01-31 22:59:18,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:59:18,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1043184503] [2022-01-31 22:59:18,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:59:18,675 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:59:18,675 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:59:18,675 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:59:18,681 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:59:18,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:59:21,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:59:21,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:59:21,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:59:21,671 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:59:21,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1043184503] [2022-01-31 22:59:21,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1043184503] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:59:21,671 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:59:21,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [118] imperfect sequences [] total 118 [2022-01-31 22:59:21,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193450415] [2022-01-31 22:59:21,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:59:21,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 118 states [2022-01-31 22:59:21,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:59:21,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2022-01-31 22:59:21,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6788, Invalid=7018, Unknown=0, NotChecked=0, Total=13806 [2022-01-31 22:59:21,674 INFO L87 Difference]: Start difference. First operand 576 states and 577 transitions. Second operand has 118 states, 118 states have (on average 4.838983050847458) internal successors, (571), 117 states have internal predecessors, (571), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:59:22,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:59:22,747 INFO L93 Difference]: Finished difference Result 591 states and 593 transitions. [2022-01-31 22:59:22,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2022-01-31 22:59:22,747 INFO L78 Accepts]: Start accepts. Automaton has has 118 states, 118 states have (on average 4.838983050847458) internal successors, (571), 117 states have internal predecessors, (571), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 574 [2022-01-31 22:59:22,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:59:22,748 INFO L225 Difference]: With dead ends: 591 [2022-01-31 22:59:22,748 INFO L226 Difference]: Without dead ends: 584 [2022-01-31 22:59:22,749 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=6788, Invalid=7018, Unknown=0, NotChecked=0, Total=13806 [2022-01-31 22:59:22,749 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 417 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 417 SdHoareTripleChecker+Valid, 457 SdHoareTripleChecker+Invalid, 355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 22:59:22,749 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [417 Valid, 457 Invalid, 355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 22:59:22,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2022-01-31 22:59:23,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 581. [2022-01-31 22:59:23,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 577 states have (on average 1.0034662045060658) internal successors, (579), 577 states have internal predecessors, (579), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:59:23,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 582 transitions. [2022-01-31 22:59:23,344 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 582 transitions. Word has length 574 [2022-01-31 22:59:23,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:59:23,344 INFO L470 AbstractCegarLoop]: Abstraction has 581 states and 582 transitions. [2022-01-31 22:59:23,344 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 118 states, 118 states have (on average 4.838983050847458) internal successors, (571), 117 states have internal predecessors, (571), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:59:23,345 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 582 transitions. [2022-01-31 22:59:23,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 580 [2022-01-31 22:59:23,356 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:59:23,356 INFO L514 BasicCegarLoop]: trace histogram [107, 106, 106, 106, 106, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:59:23,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2022-01-31 22:59:23,356 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:59:23,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:59:23,357 INFO L85 PathProgramCache]: Analyzing trace with hash -1746581103, now seen corresponding path program 106 times [2022-01-31 22:59:23,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:59:23,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1428571470] [2022-01-31 22:59:23,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:59:23,364 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:59:23,364 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:59:23,364 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:59:23,371 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:59:23,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:59:27,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:59:27,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:59:27,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:59:27,279 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:59:27,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1428571470] [2022-01-31 22:59:27,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1428571470] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:59:27,279 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:59:27,279 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [119] imperfect sequences [] total 119 [2022-01-31 22:59:27,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251216316] [2022-01-31 22:59:27,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:59:27,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 119 states [2022-01-31 22:59:27,280 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:59:27,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2022-01-31 22:59:27,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6905, Invalid=7137, Unknown=0, NotChecked=0, Total=14042 [2022-01-31 22:59:27,283 INFO L87 Difference]: Start difference. First operand 581 states and 582 transitions. Second operand has 119 states, 119 states have (on average 4.840336134453781) internal successors, (576), 118 states have internal predecessors, (576), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:59:28,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:59:28,268 INFO L93 Difference]: Finished difference Result 596 states and 598 transitions. [2022-01-31 22:59:28,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2022-01-31 22:59:28,268 INFO L78 Accepts]: Start accepts. Automaton has has 119 states, 119 states have (on average 4.840336134453781) internal successors, (576), 118 states have internal predecessors, (576), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 579 [2022-01-31 22:59:28,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:59:28,269 INFO L225 Difference]: With dead ends: 596 [2022-01-31 22:59:28,269 INFO L226 Difference]: Without dead ends: 589 [2022-01-31 22:59:28,270 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=6905, Invalid=7137, Unknown=0, NotChecked=0, Total=14042 [2022-01-31 22:59:28,270 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 447 mSDsluCounter, 414 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 447 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 22:59:28,270 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [447 Valid, 449 Invalid, 380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 332 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 22:59:28,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2022-01-31 22:59:28,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 586. [2022-01-31 22:59:28,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 586 states, 582 states have (on average 1.0034364261168385) internal successors, (584), 582 states have internal predecessors, (584), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:59:28,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 587 transitions. [2022-01-31 22:59:28,888 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 587 transitions. Word has length 579 [2022-01-31 22:59:28,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:59:28,888 INFO L470 AbstractCegarLoop]: Abstraction has 586 states and 587 transitions. [2022-01-31 22:59:28,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 119 states, 119 states have (on average 4.840336134453781) internal successors, (576), 118 states have internal predecessors, (576), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:59:28,889 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 587 transitions. [2022-01-31 22:59:28,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 585 [2022-01-31 22:59:28,891 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:59:28,891 INFO L514 BasicCegarLoop]: trace histogram [108, 107, 107, 107, 107, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:59:28,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2022-01-31 22:59:28,891 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:59:28,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:59:28,891 INFO L85 PathProgramCache]: Analyzing trace with hash -2106467562, now seen corresponding path program 107 times [2022-01-31 22:59:28,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:59:28,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2121250141] [2022-01-31 22:59:28,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:59:28,904 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:59:28,904 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:59:28,904 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:59:28,911 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:59:28,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:59:32,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:59:32,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:59:32,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:59:32,700 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:59:32,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2121250141] [2022-01-31 22:59:32,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2121250141] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:59:32,700 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:59:32,700 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [120] imperfect sequences [] total 120 [2022-01-31 22:59:32,700 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385951905] [2022-01-31 22:59:32,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:59:32,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 120 states [2022-01-31 22:59:32,701 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:59:32,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2022-01-31 22:59:32,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7023, Invalid=7257, Unknown=0, NotChecked=0, Total=14280 [2022-01-31 22:59:32,704 INFO L87 Difference]: Start difference. First operand 586 states and 587 transitions. Second operand has 120 states, 120 states have (on average 4.841666666666667) internal successors, (581), 119 states have internal predecessors, (581), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:59:33,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:59:33,772 INFO L93 Difference]: Finished difference Result 601 states and 603 transitions. [2022-01-31 22:59:33,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2022-01-31 22:59:33,772 INFO L78 Accepts]: Start accepts. Automaton has has 120 states, 120 states have (on average 4.841666666666667) internal successors, (581), 119 states have internal predecessors, (581), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 584 [2022-01-31 22:59:33,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:59:33,773 INFO L225 Difference]: With dead ends: 601 [2022-01-31 22:59:33,773 INFO L226 Difference]: Without dead ends: 594 [2022-01-31 22:59:33,774 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=7023, Invalid=7257, Unknown=0, NotChecked=0, Total=14280 [2022-01-31 22:59:33,774 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 510 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 337 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 510 SdHoareTripleChecker+Valid, 524 SdHoareTripleChecker+Invalid, 405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 22:59:33,774 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [510 Valid, 524 Invalid, 405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 337 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 22:59:33,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2022-01-31 22:59:34,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 591. [2022-01-31 22:59:34,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 591 states, 587 states have (on average 1.0034071550255537) internal successors, (589), 587 states have internal predecessors, (589), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:59:34,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 592 transitions. [2022-01-31 22:59:34,384 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 592 transitions. Word has length 584 [2022-01-31 22:59:34,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:59:34,384 INFO L470 AbstractCegarLoop]: Abstraction has 591 states and 592 transitions. [2022-01-31 22:59:34,385 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 120 states, 120 states have (on average 4.841666666666667) internal successors, (581), 119 states have internal predecessors, (581), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:59:34,385 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 592 transitions. [2022-01-31 22:59:34,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 590 [2022-01-31 22:59:34,387 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:59:34,387 INFO L514 BasicCegarLoop]: trace histogram [109, 108, 108, 108, 108, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:59:34,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2022-01-31 22:59:34,387 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:59:34,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:59:34,387 INFO L85 PathProgramCache]: Analyzing trace with hash -1593019215, now seen corresponding path program 108 times [2022-01-31 22:59:34,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:59:34,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [422728496] [2022-01-31 22:59:34,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:59:34,390 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:59:34,390 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:59:34,390 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:59:34,396 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:59:34,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:59:37,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:59:37,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:59:37,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:59:37,820 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:59:37,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [422728496] [2022-01-31 22:59:37,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [422728496] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:59:37,820 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:59:37,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [121] imperfect sequences [] total 121 [2022-01-31 22:59:37,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163932195] [2022-01-31 22:59:37,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:59:37,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 121 states [2022-01-31 22:59:37,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:59:37,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 121 interpolants. [2022-01-31 22:59:37,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7142, Invalid=7378, Unknown=0, NotChecked=0, Total=14520 [2022-01-31 22:59:37,829 INFO L87 Difference]: Start difference. First operand 591 states and 592 transitions. Second operand has 121 states, 121 states have (on average 4.8429752066115705) internal successors, (586), 120 states have internal predecessors, (586), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:59:38,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:59:38,897 INFO L93 Difference]: Finished difference Result 606 states and 608 transitions. [2022-01-31 22:59:38,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2022-01-31 22:59:38,897 INFO L78 Accepts]: Start accepts. Automaton has has 121 states, 121 states have (on average 4.8429752066115705) internal successors, (586), 120 states have internal predecessors, (586), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 589 [2022-01-31 22:59:38,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:59:38,898 INFO L225 Difference]: With dead ends: 606 [2022-01-31 22:59:38,898 INFO L226 Difference]: Without dead ends: 599 [2022-01-31 22:59:38,899 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=7142, Invalid=7378, Unknown=0, NotChecked=0, Total=14520 [2022-01-31 22:59:38,899 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 426 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 337 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 426 SdHoareTripleChecker+Valid, 511 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 22:59:38,899 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [426 Valid, 511 Invalid, 376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 337 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 22:59:38,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2022-01-31 22:59:39,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 596. [2022-01-31 22:59:39,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 596 states, 592 states have (on average 1.0033783783783783) internal successors, (594), 592 states have internal predecessors, (594), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:59:39,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 597 transitions. [2022-01-31 22:59:39,549 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 597 transitions. Word has length 589 [2022-01-31 22:59:39,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:59:39,549 INFO L470 AbstractCegarLoop]: Abstraction has 596 states and 597 transitions. [2022-01-31 22:59:39,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 121 states, 121 states have (on average 4.8429752066115705) internal successors, (586), 120 states have internal predecessors, (586), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:59:39,549 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 597 transitions. [2022-01-31 22:59:39,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 595 [2022-01-31 22:59:39,552 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:59:39,552 INFO L514 BasicCegarLoop]: trace histogram [110, 109, 109, 109, 109, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:59:39,552 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2022-01-31 22:59:39,552 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:59:39,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:59:39,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1331125258, now seen corresponding path program 109 times [2022-01-31 22:59:39,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:59:39,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1227305672] [2022-01-31 22:59:39,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:59:39,556 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:59:39,556 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:59:39,556 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:59:39,563 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:59:39,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:59:43,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:59:43,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:59:43,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:59:43,093 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:59:43,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1227305672] [2022-01-31 22:59:43,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1227305672] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:59:43,093 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:59:43,093 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [122] imperfect sequences [] total 122 [2022-01-31 22:59:43,093 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375977312] [2022-01-31 22:59:43,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:59:43,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 122 states [2022-01-31 22:59:43,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:59:43,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2022-01-31 22:59:43,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7262, Invalid=7500, Unknown=0, NotChecked=0, Total=14762 [2022-01-31 22:59:43,096 INFO L87 Difference]: Start difference. First operand 596 states and 597 transitions. Second operand has 122 states, 122 states have (on average 4.844262295081967) internal successors, (591), 121 states have internal predecessors, (591), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:59:44,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:59:44,126 INFO L93 Difference]: Finished difference Result 611 states and 613 transitions. [2022-01-31 22:59:44,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2022-01-31 22:59:44,127 INFO L78 Accepts]: Start accepts. Automaton has has 122 states, 122 states have (on average 4.844262295081967) internal successors, (591), 121 states have internal predecessors, (591), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 594 [2022-01-31 22:59:44,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:59:44,128 INFO L225 Difference]: With dead ends: 611 [2022-01-31 22:59:44,128 INFO L226 Difference]: Without dead ends: 604 [2022-01-31 22:59:44,129 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=7262, Invalid=7500, Unknown=0, NotChecked=0, Total=14762 [2022-01-31 22:59:44,129 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 477 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 335 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 477 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 22:59:44,129 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [477 Valid, 455 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 335 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 22:59:44,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2022-01-31 22:59:44,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 601. [2022-01-31 22:59:44,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 601 states, 597 states have (on average 1.003350083752094) internal successors, (599), 597 states have internal predecessors, (599), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:59:44,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 602 transitions. [2022-01-31 22:59:44,783 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 602 transitions. Word has length 594 [2022-01-31 22:59:44,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:59:44,784 INFO L470 AbstractCegarLoop]: Abstraction has 601 states and 602 transitions. [2022-01-31 22:59:44,784 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 122 states, 122 states have (on average 4.844262295081967) internal successors, (591), 121 states have internal predecessors, (591), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:59:44,784 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 602 transitions. [2022-01-31 22:59:44,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 600 [2022-01-31 22:59:44,786 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:59:44,786 INFO L514 BasicCegarLoop]: trace histogram [111, 110, 110, 110, 110, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:59:44,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2022-01-31 22:59:44,787 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:59:44,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:59:44,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1408223279, now seen corresponding path program 110 times [2022-01-31 22:59:44,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:59:44,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1424028731] [2022-01-31 22:59:44,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:59:44,790 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:59:44,790 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:59:44,790 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:59:44,797 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:59:44,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:59:49,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:59:49,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:59:49,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:59:49,014 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:59:49,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1424028731] [2022-01-31 22:59:49,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1424028731] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:59:49,014 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:59:49,014 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [123] imperfect sequences [] total 123 [2022-01-31 22:59:49,014 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377322373] [2022-01-31 22:59:49,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:59:49,015 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 123 states [2022-01-31 22:59:49,015 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:59:49,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants. [2022-01-31 22:59:49,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7383, Invalid=7623, Unknown=0, NotChecked=0, Total=15006 [2022-01-31 22:59:49,018 INFO L87 Difference]: Start difference. First operand 601 states and 602 transitions. Second operand has 123 states, 123 states have (on average 4.845528455284553) internal successors, (596), 122 states have internal predecessors, (596), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:59:50,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:59:50,130 INFO L93 Difference]: Finished difference Result 616 states and 618 transitions. [2022-01-31 22:59:50,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2022-01-31 22:59:50,131 INFO L78 Accepts]: Start accepts. Automaton has has 123 states, 123 states have (on average 4.845528455284553) internal successors, (596), 122 states have internal predecessors, (596), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 599 [2022-01-31 22:59:50,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:59:50,132 INFO L225 Difference]: With dead ends: 616 [2022-01-31 22:59:50,132 INFO L226 Difference]: Without dead ends: 609 [2022-01-31 22:59:50,132 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=7383, Invalid=7623, Unknown=0, NotChecked=0, Total=15006 [2022-01-31 22:59:50,133 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 423 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 423 SdHoareTripleChecker+Valid, 507 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 22:59:50,133 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [423 Valid, 507 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 22:59:50,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2022-01-31 22:59:50,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 606. [2022-01-31 22:59:50,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 606 states, 602 states have (on average 1.0033222591362125) internal successors, (604), 602 states have internal predecessors, (604), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:59:50,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 606 states to 606 states and 607 transitions. [2022-01-31 22:59:50,841 INFO L78 Accepts]: Start accepts. Automaton has 606 states and 607 transitions. Word has length 599 [2022-01-31 22:59:50,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:59:50,841 INFO L470 AbstractCegarLoop]: Abstraction has 606 states and 607 transitions. [2022-01-31 22:59:50,842 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 123 states, 123 states have (on average 4.845528455284553) internal successors, (596), 122 states have internal predecessors, (596), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:59:50,842 INFO L276 IsEmpty]: Start isEmpty. Operand 606 states and 607 transitions. [2022-01-31 22:59:50,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 605 [2022-01-31 22:59:50,844 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:59:50,844 INFO L514 BasicCegarLoop]: trace histogram [112, 111, 111, 111, 111, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:59:50,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2022-01-31 22:59:50,844 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:59:50,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:59:50,845 INFO L85 PathProgramCache]: Analyzing trace with hash 119657686, now seen corresponding path program 111 times [2022-01-31 22:59:50,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:59:50,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1782685243] [2022-01-31 22:59:50,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:59:50,847 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:59:50,847 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:59:50,847 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:59:50,854 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:59:50,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:59:54,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:59:54,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:59:54,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:59:54,899 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:59:54,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1782685243] [2022-01-31 22:59:54,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1782685243] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:59:54,899 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:59:54,899 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [124] imperfect sequences [] total 124 [2022-01-31 22:59:54,899 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221332431] [2022-01-31 22:59:54,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:59:54,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 124 states [2022-01-31 22:59:54,899 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:59:54,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants. [2022-01-31 22:59:54,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7505, Invalid=7747, Unknown=0, NotChecked=0, Total=15252 [2022-01-31 22:59:54,902 INFO L87 Difference]: Start difference. First operand 606 states and 607 transitions. Second operand has 124 states, 124 states have (on average 4.846774193548387) internal successors, (601), 123 states have internal predecessors, (601), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:59:55,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:59:55,972 INFO L93 Difference]: Finished difference Result 621 states and 623 transitions. [2022-01-31 22:59:55,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2022-01-31 22:59:55,973 INFO L78 Accepts]: Start accepts. Automaton has has 124 states, 124 states have (on average 4.846774193548387) internal successors, (601), 123 states have internal predecessors, (601), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 604 [2022-01-31 22:59:55,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:59:55,974 INFO L225 Difference]: With dead ends: 621 [2022-01-31 22:59:55,974 INFO L226 Difference]: Without dead ends: 614 [2022-01-31 22:59:55,975 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=7505, Invalid=7747, Unknown=0, NotChecked=0, Total=15252 [2022-01-31 22:59:55,975 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 477 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 337 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 477 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 22:59:55,975 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [477 Valid, 471 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 337 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 22:59:55,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2022-01-31 22:59:56,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 611. [2022-01-31 22:59:56,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 611 states, 607 states have (on average 1.0032948929159802) internal successors, (609), 607 states have internal predecessors, (609), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:59:56,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 612 transitions. [2022-01-31 22:59:56,685 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 612 transitions. Word has length 604 [2022-01-31 22:59:56,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:59:56,686 INFO L470 AbstractCegarLoop]: Abstraction has 611 states and 612 transitions. [2022-01-31 22:59:56,686 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 124 states, 124 states have (on average 4.846774193548387) internal successors, (601), 123 states have internal predecessors, (601), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:59:56,686 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 612 transitions. [2022-01-31 22:59:56,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 610 [2022-01-31 22:59:56,688 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:59:56,688 INFO L514 BasicCegarLoop]: trace histogram [113, 112, 112, 112, 112, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:59:56,689 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2022-01-31 22:59:56,689 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:59:56,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:59:56,689 INFO L85 PathProgramCache]: Analyzing trace with hash -535653647, now seen corresponding path program 112 times [2022-01-31 22:59:56,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:59:56,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1641265999] [2022-01-31 22:59:56,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:59:56,691 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 22:59:56,691 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 22:59:56,691 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:59:56,698 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:59:56,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:00:00,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:00:00,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:00:00,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 23:00:00,743 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:00:00,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1641265999] [2022-01-31 23:00:00,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1641265999] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:00:00,743 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:00:00,744 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [125] imperfect sequences [] total 125 [2022-01-31 23:00:00,744 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484186130] [2022-01-31 23:00:00,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:00:00,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 125 states [2022-01-31 23:00:00,744 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:00:00,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 125 interpolants. [2022-01-31 23:00:00,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7628, Invalid=7872, Unknown=0, NotChecked=0, Total=15500 [2022-01-31 23:00:00,747 INFO L87 Difference]: Start difference. First operand 611 states and 612 transitions. Second operand has 125 states, 125 states have (on average 4.848) internal successors, (606), 124 states have internal predecessors, (606), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:00:01,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:00:01,898 INFO L93 Difference]: Finished difference Result 626 states and 628 transitions. [2022-01-31 23:00:01,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2022-01-31 23:00:01,898 INFO L78 Accepts]: Start accepts. Automaton has has 125 states, 125 states have (on average 4.848) internal successors, (606), 124 states have internal predecessors, (606), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 609 [2022-01-31 23:00:01,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:00:01,899 INFO L225 Difference]: With dead ends: 626 [2022-01-31 23:00:01,899 INFO L226 Difference]: Without dead ends: 619 [2022-01-31 23:00:01,900 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=7628, Invalid=7872, Unknown=0, NotChecked=0, Total=15500 [2022-01-31 23:00:01,900 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 426 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 426 SdHoareTripleChecker+Valid, 509 SdHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 23:00:01,901 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [426 Valid, 509 Invalid, 377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 23:00:01,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2022-01-31 23:00:02,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 616. [2022-01-31 23:00:02,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 616 states, 612 states have (on average 1.0032679738562091) internal successors, (614), 612 states have internal predecessors, (614), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:00:02,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 617 transitions. [2022-01-31 23:00:02,613 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 617 transitions. Word has length 609 [2022-01-31 23:00:02,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:00:02,613 INFO L470 AbstractCegarLoop]: Abstraction has 616 states and 617 transitions. [2022-01-31 23:00:02,613 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 125 states, 125 states have (on average 4.848) internal successors, (606), 124 states have internal predecessors, (606), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:00:02,613 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 617 transitions. [2022-01-31 23:00:02,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 615 [2022-01-31 23:00:02,616 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:00:02,616 INFO L514 BasicCegarLoop]: trace histogram [114, 113, 113, 113, 113, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:00:02,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2022-01-31 23:00:02,616 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:00:02,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:00:02,616 INFO L85 PathProgramCache]: Analyzing trace with hash -2080674378, now seen corresponding path program 113 times [2022-01-31 23:00:02,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:00:02,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1446156543] [2022-01-31 23:00:02,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:00:02,620 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 23:00:02,620 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 23:00:02,620 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:00:02,627 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:00:02,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:00:06,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:00:06,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:00:06,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 23:00:06,423 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:00:06,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1446156543] [2022-01-31 23:00:06,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1446156543] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:00:06,424 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:00:06,424 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [126] imperfect sequences [] total 126 [2022-01-31 23:00:06,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417143512] [2022-01-31 23:00:06,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:00:06,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 126 states [2022-01-31 23:00:06,424 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:00:06,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 126 interpolants. [2022-01-31 23:00:06,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7752, Invalid=7998, Unknown=0, NotChecked=0, Total=15750 [2022-01-31 23:00:06,428 INFO L87 Difference]: Start difference. First operand 616 states and 617 transitions. Second operand has 126 states, 126 states have (on average 4.849206349206349) internal successors, (611), 125 states have internal predecessors, (611), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:00:07,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:00:07,618 INFO L93 Difference]: Finished difference Result 631 states and 633 transitions. [2022-01-31 23:00:07,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2022-01-31 23:00:07,618 INFO L78 Accepts]: Start accepts. Automaton has has 126 states, 126 states have (on average 4.849206349206349) internal successors, (611), 125 states have internal predecessors, (611), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 614 [2022-01-31 23:00:07,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:00:07,619 INFO L225 Difference]: With dead ends: 631 [2022-01-31 23:00:07,619 INFO L226 Difference]: Without dead ends: 624 [2022-01-31 23:00:07,620 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=7752, Invalid=7998, Unknown=0, NotChecked=0, Total=15750 [2022-01-31 23:00:07,620 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 456 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 456 SdHoareTripleChecker+Valid, 505 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 23:00:07,620 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [456 Valid, 505 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 347 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 23:00:07,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2022-01-31 23:00:08,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 621. [2022-01-31 23:00:08,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 621 states, 617 states have (on average 1.0032414910858996) internal successors, (619), 617 states have internal predecessors, (619), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:00:08,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 622 transitions. [2022-01-31 23:00:08,331 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 622 transitions. Word has length 614 [2022-01-31 23:00:08,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:00:08,331 INFO L470 AbstractCegarLoop]: Abstraction has 621 states and 622 transitions. [2022-01-31 23:00:08,331 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 126 states, 126 states have (on average 4.849206349206349) internal successors, (611), 125 states have internal predecessors, (611), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:00:08,331 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 622 transitions. [2022-01-31 23:00:08,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 620 [2022-01-31 23:00:08,339 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:00:08,339 INFO L514 BasicCegarLoop]: trace histogram [115, 114, 114, 114, 114, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:00:08,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2022-01-31 23:00:08,339 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:00:08,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:00:08,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1639286289, now seen corresponding path program 114 times [2022-01-31 23:00:08,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:00:08,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [124428320] [2022-01-31 23:00:08,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:00:08,341 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 23:00:08,341 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 23:00:08,341 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:00:08,349 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:00:08,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:00:12,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:00:12,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:00:12,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 23:00:12,403 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:00:12,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [124428320] [2022-01-31 23:00:12,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [124428320] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:00:12,403 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:00:12,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [127] imperfect sequences [] total 127 [2022-01-31 23:00:12,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529283934] [2022-01-31 23:00:12,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:00:12,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 127 states [2022-01-31 23:00:12,404 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:00:12,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 127 interpolants. [2022-01-31 23:00:12,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7877, Invalid=8125, Unknown=0, NotChecked=0, Total=16002 [2022-01-31 23:00:12,408 INFO L87 Difference]: Start difference. First operand 621 states and 622 transitions. Second operand has 127 states, 127 states have (on average 4.850393700787402) internal successors, (616), 126 states have internal predecessors, (616), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:00:13,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:00:13,709 INFO L93 Difference]: Finished difference Result 636 states and 638 transitions. [2022-01-31 23:00:13,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2022-01-31 23:00:13,709 INFO L78 Accepts]: Start accepts. Automaton has has 127 states, 127 states have (on average 4.850393700787402) internal successors, (616), 126 states have internal predecessors, (616), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 619 [2022-01-31 23:00:13,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:00:13,711 INFO L225 Difference]: With dead ends: 636 [2022-01-31 23:00:13,711 INFO L226 Difference]: Without dead ends: 629 [2022-01-31 23:00:13,711 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=7877, Invalid=8125, Unknown=0, NotChecked=0, Total=16002 [2022-01-31 23:00:13,712 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 465 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 465 SdHoareTripleChecker+Valid, 500 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 23:00:13,712 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [465 Valid, 500 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 23:00:13,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2022-01-31 23:00:14,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 626. [2022-01-31 23:00:14,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 626 states, 622 states have (on average 1.0032154340836013) internal successors, (624), 622 states have internal predecessors, (624), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:00:14,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 627 transitions. [2022-01-31 23:00:14,525 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 627 transitions. Word has length 619 [2022-01-31 23:00:14,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:00:14,525 INFO L470 AbstractCegarLoop]: Abstraction has 626 states and 627 transitions. [2022-01-31 23:00:14,525 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 127 states, 127 states have (on average 4.850393700787402) internal successors, (616), 126 states have internal predecessors, (616), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:00:14,525 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 627 transitions. [2022-01-31 23:00:14,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 625 [2022-01-31 23:00:14,528 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:00:14,528 INFO L514 BasicCegarLoop]: trace histogram [116, 115, 115, 115, 115, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:00:14,528 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2022-01-31 23:00:14,528 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:00:14,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:00:14,529 INFO L85 PathProgramCache]: Analyzing trace with hash -1747751274, now seen corresponding path program 115 times [2022-01-31 23:00:14,529 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:00:14,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [645991513] [2022-01-31 23:00:14,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:00:14,531 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 23:00:14,531 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 23:00:14,531 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:00:14,539 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:00:14,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:00:19,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:00:19,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:00:19,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 23:00:19,558 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:00:19,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [645991513] [2022-01-31 23:00:19,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [645991513] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:00:19,558 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:00:19,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [128] imperfect sequences [] total 128 [2022-01-31 23:00:19,558 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128759860] [2022-01-31 23:00:19,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:00:19,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 128 states [2022-01-31 23:00:19,559 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:00:19,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2022-01-31 23:00:19,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8003, Invalid=8253, Unknown=0, NotChecked=0, Total=16256 [2022-01-31 23:00:19,561 INFO L87 Difference]: Start difference. First operand 626 states and 627 transitions. Second operand has 128 states, 128 states have (on average 4.8515625) internal successors, (621), 127 states have internal predecessors, (621), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:00:20,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:00:20,977 INFO L93 Difference]: Finished difference Result 641 states and 643 transitions. [2022-01-31 23:00:20,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2022-01-31 23:00:20,978 INFO L78 Accepts]: Start accepts. Automaton has has 128 states, 128 states have (on average 4.8515625) internal successors, (621), 127 states have internal predecessors, (621), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 624 [2022-01-31 23:00:20,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:00:20,979 INFO L225 Difference]: With dead ends: 641 [2022-01-31 23:00:20,979 INFO L226 Difference]: Without dead ends: 634 [2022-01-31 23:00:20,980 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=8003, Invalid=8253, Unknown=0, NotChecked=0, Total=16256 [2022-01-31 23:00:20,980 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 468 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 468 SdHoareTripleChecker+Valid, 496 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 23:00:20,980 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [468 Valid, 496 Invalid, 393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 347 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 23:00:20,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2022-01-31 23:00:21,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 631. [2022-01-31 23:00:21,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 631 states, 627 states have (on average 1.003189792663477) internal successors, (629), 627 states have internal predecessors, (629), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:00:21,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 631 states to 631 states and 632 transitions. [2022-01-31 23:00:21,807 INFO L78 Accepts]: Start accepts. Automaton has 631 states and 632 transitions. Word has length 624 [2022-01-31 23:00:21,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:00:21,808 INFO L470 AbstractCegarLoop]: Abstraction has 631 states and 632 transitions. [2022-01-31 23:00:21,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 128 states, 128 states have (on average 4.8515625) internal successors, (621), 127 states have internal predecessors, (621), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:00:21,808 INFO L276 IsEmpty]: Start isEmpty. Operand 631 states and 632 transitions. [2022-01-31 23:00:21,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 630 [2022-01-31 23:00:21,811 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:00:21,811 INFO L514 BasicCegarLoop]: trace histogram [117, 116, 116, 116, 116, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:00:21,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2022-01-31 23:00:21,811 INFO L402 AbstractCegarLoop]: === Iteration 120 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:00:21,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:00:21,811 INFO L85 PathProgramCache]: Analyzing trace with hash 1931153713, now seen corresponding path program 116 times [2022-01-31 23:00:21,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:00:21,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1636153215] [2022-01-31 23:00:21,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:00:21,813 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 23:00:21,813 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 23:00:21,813 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:00:21,821 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:00:21,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:00:27,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:00:27,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:00:27,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 23:00:27,253 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:00:27,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1636153215] [2022-01-31 23:00:27,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1636153215] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:00:27,254 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:00:27,254 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [129] imperfect sequences [] total 129 [2022-01-31 23:00:27,254 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118761910] [2022-01-31 23:00:27,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:00:27,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 129 states [2022-01-31 23:00:27,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:00:27,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 129 interpolants. [2022-01-31 23:00:27,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8130, Invalid=8382, Unknown=0, NotChecked=0, Total=16512 [2022-01-31 23:00:27,259 INFO L87 Difference]: Start difference. First operand 631 states and 632 transitions. Second operand has 129 states, 129 states have (on average 4.852713178294573) internal successors, (626), 128 states have internal predecessors, (626), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:00:28,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:00:28,984 INFO L93 Difference]: Finished difference Result 646 states and 648 transitions. [2022-01-31 23:00:28,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2022-01-31 23:00:28,984 INFO L78 Accepts]: Start accepts. Automaton has has 129 states, 129 states have (on average 4.852713178294573) internal successors, (626), 128 states have internal predecessors, (626), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 629 [2022-01-31 23:00:28,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:00:28,986 INFO L225 Difference]: With dead ends: 646 [2022-01-31 23:00:28,986 INFO L226 Difference]: Without dead ends: 639 [2022-01-31 23:00:28,987 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=8130, Invalid=8382, Unknown=0, NotChecked=0, Total=16512 [2022-01-31 23:00:28,988 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 537 mSDsluCounter, 498 mSDsCounter, 0 mSdLazyCounter, 362 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 537 SdHoareTripleChecker+Valid, 533 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 23:00:28,988 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [537 Valid, 533 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 362 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 23:00:28,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2022-01-31 23:00:30,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 636. [2022-01-31 23:00:30,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 636 states, 632 states have (on average 1.0031645569620253) internal successors, (634), 632 states have internal predecessors, (634), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:00:30,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 637 transitions. [2022-01-31 23:00:30,114 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 637 transitions. Word has length 629 [2022-01-31 23:00:30,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:00:30,114 INFO L470 AbstractCegarLoop]: Abstraction has 636 states and 637 transitions. [2022-01-31 23:00:30,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 129 states, 129 states have (on average 4.852713178294573) internal successors, (626), 128 states have internal predecessors, (626), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:00:30,115 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 637 transitions. [2022-01-31 23:00:30,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 635 [2022-01-31 23:00:30,118 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:00:30,118 INFO L514 BasicCegarLoop]: trace histogram [118, 117, 117, 117, 117, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:00:30,118 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2022-01-31 23:00:30,118 INFO L402 AbstractCegarLoop]: === Iteration 121 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:00:30,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:00:30,119 INFO L85 PathProgramCache]: Analyzing trace with hash 96982902, now seen corresponding path program 117 times [2022-01-31 23:00:30,119 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:00:30,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1818143522] [2022-01-31 23:00:30,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:00:30,122 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 23:00:30,122 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 23:00:30,122 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:00:30,132 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:00:30,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:00:35,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:00:35,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:00:35,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 23:00:35,752 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:00:35,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1818143522] [2022-01-31 23:00:35,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1818143522] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:00:35,752 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:00:35,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [130] imperfect sequences [] total 130 [2022-01-31 23:00:35,753 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438585946] [2022-01-31 23:00:35,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:00:35,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 130 states [2022-01-31 23:00:35,753 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:00:35,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2022-01-31 23:00:35,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8258, Invalid=8512, Unknown=0, NotChecked=0, Total=16770 [2022-01-31 23:00:35,757 INFO L87 Difference]: Start difference. First operand 636 states and 637 transitions. Second operand has 130 states, 130 states have (on average 4.8538461538461535) internal successors, (631), 129 states have internal predecessors, (631), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:00:37,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:00:37,186 INFO L93 Difference]: Finished difference Result 651 states and 653 transitions. [2022-01-31 23:00:37,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2022-01-31 23:00:37,186 INFO L78 Accepts]: Start accepts. Automaton has has 130 states, 130 states have (on average 4.8538461538461535) internal successors, (631), 129 states have internal predecessors, (631), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 634 [2022-01-31 23:00:37,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:00:37,188 INFO L225 Difference]: With dead ends: 651 [2022-01-31 23:00:37,188 INFO L226 Difference]: Without dead ends: 644 [2022-01-31 23:00:37,189 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=8258, Invalid=8512, Unknown=0, NotChecked=0, Total=16770 [2022-01-31 23:00:37,189 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 492 mSDsluCounter, 500 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 492 SdHoareTripleChecker+Valid, 535 SdHoareTripleChecker+Invalid, 416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 23:00:37,190 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [492 Valid, 535 Invalid, 416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 23:00:37,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states. [2022-01-31 23:00:38,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 641. [2022-01-31 23:00:38,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 641 states, 637 states have (on average 1.0031397174254317) internal successors, (639), 637 states have internal predecessors, (639), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:00:38,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 642 transitions. [2022-01-31 23:00:38,126 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 642 transitions. Word has length 634 [2022-01-31 23:00:38,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:00:38,127 INFO L470 AbstractCegarLoop]: Abstraction has 641 states and 642 transitions. [2022-01-31 23:00:38,127 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 130 states, 130 states have (on average 4.8538461538461535) internal successors, (631), 129 states have internal predecessors, (631), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:00:38,127 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 642 transitions. [2022-01-31 23:00:38,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 640 [2022-01-31 23:00:38,130 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:00:38,130 INFO L514 BasicCegarLoop]: trace histogram [119, 118, 118, 118, 118, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:00:38,130 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2022-01-31 23:00:38,130 INFO L402 AbstractCegarLoop]: === Iteration 122 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:00:38,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:00:38,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1813695407, now seen corresponding path program 118 times [2022-01-31 23:00:38,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:00:38,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [149112349] [2022-01-31 23:00:38,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:00:38,132 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 23:00:38,132 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 23:00:38,132 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:00:38,140 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:00:38,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:00:42,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:00:42,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:00:42,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 23:00:42,660 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:00:42,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [149112349] [2022-01-31 23:00:42,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [149112349] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:00:42,661 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:00:42,661 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [131] imperfect sequences [] total 131 [2022-01-31 23:00:42,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522447572] [2022-01-31 23:00:42,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:00:42,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 131 states [2022-01-31 23:00:42,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:00:42,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 131 interpolants. [2022-01-31 23:00:42,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8387, Invalid=8643, Unknown=0, NotChecked=0, Total=17030 [2022-01-31 23:00:42,664 INFO L87 Difference]: Start difference. First operand 641 states and 642 transitions. Second operand has 131 states, 131 states have (on average 4.854961832061068) internal successors, (636), 130 states have internal predecessors, (636), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:00:44,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:00:44,047 INFO L93 Difference]: Finished difference Result 656 states and 658 transitions. [2022-01-31 23:00:44,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2022-01-31 23:00:44,047 INFO L78 Accepts]: Start accepts. Automaton has has 131 states, 131 states have (on average 4.854961832061068) internal successors, (636), 130 states have internal predecessors, (636), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 639 [2022-01-31 23:00:44,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:00:44,048 INFO L225 Difference]: With dead ends: 656 [2022-01-31 23:00:44,049 INFO L226 Difference]: Without dead ends: 649 [2022-01-31 23:00:44,049 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=8387, Invalid=8643, Unknown=0, NotChecked=0, Total=17030 [2022-01-31 23:00:44,050 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 444 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 365 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 444 SdHoareTripleChecker+Valid, 529 SdHoareTripleChecker+Invalid, 399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 23:00:44,050 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [444 Valid, 529 Invalid, 399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 365 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 23:00:44,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2022-01-31 23:00:44,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 646. [2022-01-31 23:00:44,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 646 states, 642 states have (on average 1.0031152647975077) internal successors, (644), 642 states have internal predecessors, (644), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:00:44,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 647 transitions. [2022-01-31 23:00:44,889 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 647 transitions. Word has length 639 [2022-01-31 23:00:44,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:00:44,889 INFO L470 AbstractCegarLoop]: Abstraction has 646 states and 647 transitions. [2022-01-31 23:00:44,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 131 states, 131 states have (on average 4.854961832061068) internal successors, (636), 130 states have internal predecessors, (636), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:00:44,889 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 647 transitions. [2022-01-31 23:00:44,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 645 [2022-01-31 23:00:44,892 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:00:44,892 INFO L514 BasicCegarLoop]: trace histogram [120, 119, 119, 119, 119, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:00:44,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2022-01-31 23:00:44,892 INFO L402 AbstractCegarLoop]: === Iteration 123 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:00:44,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:00:44,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1015633834, now seen corresponding path program 119 times [2022-01-31 23:00:44,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:00:44,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2103104364] [2022-01-31 23:00:44,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:00:44,895 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 23:00:44,895 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 23:00:44,895 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:00:44,903 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:00:45,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:00:49,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:00:49,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:00:49,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 23:00:49,914 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:00:49,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2103104364] [2022-01-31 23:00:49,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2103104364] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:00:49,915 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:00:49,915 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [132] imperfect sequences [] total 132 [2022-01-31 23:00:49,915 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546991369] [2022-01-31 23:00:49,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:00:49,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 132 states [2022-01-31 23:00:49,915 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:00:49,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants. [2022-01-31 23:00:49,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8517, Invalid=8775, Unknown=0, NotChecked=0, Total=17292 [2022-01-31 23:00:49,919 INFO L87 Difference]: Start difference. First operand 646 states and 647 transitions. Second operand has 132 states, 132 states have (on average 4.856060606060606) internal successors, (641), 131 states have internal predecessors, (641), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:00:51,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:00:51,276 INFO L93 Difference]: Finished difference Result 661 states and 663 transitions. [2022-01-31 23:00:51,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2022-01-31 23:00:51,277 INFO L78 Accepts]: Start accepts. Automaton has has 132 states, 132 states have (on average 4.856060606060606) internal successors, (641), 131 states have internal predecessors, (641), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 644 [2022-01-31 23:00:51,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:00:51,278 INFO L225 Difference]: With dead ends: 661 [2022-01-31 23:00:51,278 INFO L226 Difference]: Without dead ends: 654 [2022-01-31 23:00:51,279 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=8517, Invalid=8775, Unknown=0, NotChecked=0, Total=17292 [2022-01-31 23:00:51,279 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 459 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 459 SdHoareTripleChecker+Valid, 534 SdHoareTripleChecker+Invalid, 394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 23:00:51,279 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [459 Valid, 534 Invalid, 394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 23:00:51,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 654 states. [2022-01-31 23:00:52,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 654 to 651. [2022-01-31 23:00:52,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 651 states, 647 states have (on average 1.0030911901081916) internal successors, (649), 647 states have internal predecessors, (649), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:00:52,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 652 transitions. [2022-01-31 23:00:52,439 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 652 transitions. Word has length 644 [2022-01-31 23:00:52,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:00:52,439 INFO L470 AbstractCegarLoop]: Abstraction has 651 states and 652 transitions. [2022-01-31 23:00:52,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 132 states, 132 states have (on average 4.856060606060606) internal successors, (641), 131 states have internal predecessors, (641), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:00:52,439 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 652 transitions. [2022-01-31 23:00:52,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 650 [2022-01-31 23:00:52,442 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:00:52,443 INFO L514 BasicCegarLoop]: trace histogram [121, 120, 120, 120, 120, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:00:52,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2022-01-31 23:00:52,443 INFO L402 AbstractCegarLoop]: === Iteration 124 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:00:52,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:00:52,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1590300815, now seen corresponding path program 120 times [2022-01-31 23:00:52,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:00:52,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2078465480] [2022-01-31 23:00:52,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:00:52,468 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 23:00:52,469 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 23:00:52,469 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:00:52,477 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:00:52,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:00:57,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:00:57,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:00:57,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 23:00:57,736 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:00:57,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2078465480] [2022-01-31 23:00:57,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2078465480] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:00:57,736 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:00:57,736 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [133] imperfect sequences [] total 133 [2022-01-31 23:00:57,736 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858129761] [2022-01-31 23:00:57,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:00:57,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 133 states [2022-01-31 23:00:57,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:00:57,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 133 interpolants. [2022-01-31 23:00:57,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8648, Invalid=8908, Unknown=0, NotChecked=0, Total=17556 [2022-01-31 23:00:57,740 INFO L87 Difference]: Start difference. First operand 651 states and 652 transitions. Second operand has 133 states, 133 states have (on average 4.857142857142857) internal successors, (646), 132 states have internal predecessors, (646), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:00:59,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:00:59,102 INFO L93 Difference]: Finished difference Result 666 states and 668 transitions. [2022-01-31 23:00:59,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2022-01-31 23:00:59,103 INFO L78 Accepts]: Start accepts. Automaton has has 133 states, 133 states have (on average 4.857142857142857) internal successors, (646), 132 states have internal predecessors, (646), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 649 [2022-01-31 23:00:59,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:00:59,104 INFO L225 Difference]: With dead ends: 666 [2022-01-31 23:00:59,104 INFO L226 Difference]: Without dead ends: 659 [2022-01-31 23:00:59,105 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=8648, Invalid=8908, Unknown=0, NotChecked=0, Total=17556 [2022-01-31 23:00:59,105 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 555 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 555 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 23:00:59,105 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [555 Valid, 485 Invalid, 422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 352 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 23:00:59,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2022-01-31 23:00:59,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 656. [2022-01-31 23:00:59,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 656 states, 652 states have (on average 1.0030674846625767) internal successors, (654), 652 states have internal predecessors, (654), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:00:59,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 656 states to 656 states and 657 transitions. [2022-01-31 23:00:59,973 INFO L78 Accepts]: Start accepts. Automaton has 656 states and 657 transitions. Word has length 649 [2022-01-31 23:00:59,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:00:59,973 INFO L470 AbstractCegarLoop]: Abstraction has 656 states and 657 transitions. [2022-01-31 23:00:59,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 133 states, 133 states have (on average 4.857142857142857) internal successors, (646), 132 states have internal predecessors, (646), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:00:59,974 INFO L276 IsEmpty]: Start isEmpty. Operand 656 states and 657 transitions. [2022-01-31 23:00:59,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 655 [2022-01-31 23:00:59,976 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:00:59,976 INFO L514 BasicCegarLoop]: trace histogram [122, 121, 121, 121, 121, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:00:59,976 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2022-01-31 23:00:59,977 INFO L402 AbstractCegarLoop]: === Iteration 125 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:00:59,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:00:59,977 INFO L85 PathProgramCache]: Analyzing trace with hash -654450378, now seen corresponding path program 121 times [2022-01-31 23:00:59,977 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:00:59,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [202696771] [2022-01-31 23:00:59,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:00:59,979 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 23:00:59,979 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 23:00:59,979 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:00:59,987 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:01:00,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:01:05,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:01:05,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:01:05,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 23:01:05,631 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:01:05,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [202696771] [2022-01-31 23:01:05,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [202696771] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:01:05,631 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:01:05,631 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [134] imperfect sequences [] total 134 [2022-01-31 23:01:05,631 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847569353] [2022-01-31 23:01:05,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:01:05,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 134 states [2022-01-31 23:01:05,632 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:01:05,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants. [2022-01-31 23:01:05,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8780, Invalid=9042, Unknown=0, NotChecked=0, Total=17822 [2022-01-31 23:01:05,634 INFO L87 Difference]: Start difference. First operand 656 states and 657 transitions. Second operand has 134 states, 134 states have (on average 4.858208955223881) internal successors, (651), 133 states have internal predecessors, (651), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:01:07,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:01:07,089 INFO L93 Difference]: Finished difference Result 671 states and 673 transitions. [2022-01-31 23:01:07,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2022-01-31 23:01:07,090 INFO L78 Accepts]: Start accepts. Automaton has has 134 states, 134 states have (on average 4.858208955223881) internal successors, (651), 133 states have internal predecessors, (651), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 654 [2022-01-31 23:01:07,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:01:07,091 INFO L225 Difference]: With dead ends: 671 [2022-01-31 23:01:07,091 INFO L226 Difference]: Without dead ends: 664 [2022-01-31 23:01:07,092 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=8780, Invalid=9042, Unknown=0, NotChecked=0, Total=17822 [2022-01-31 23:01:07,092 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 525 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 525 SdHoareTripleChecker+Valid, 515 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 23:01:07,093 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [525 Valid, 515 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 23:01:07,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2022-01-31 23:01:07,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 661. [2022-01-31 23:01:07,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 661 states, 657 states have (on average 1.0030441400304415) internal successors, (659), 657 states have internal predecessors, (659), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:01:07,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 661 states to 661 states and 662 transitions. [2022-01-31 23:01:07,986 INFO L78 Accepts]: Start accepts. Automaton has 661 states and 662 transitions. Word has length 654 [2022-01-31 23:01:07,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:01:07,986 INFO L470 AbstractCegarLoop]: Abstraction has 661 states and 662 transitions. [2022-01-31 23:01:07,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 134 states, 134 states have (on average 4.858208955223881) internal successors, (651), 133 states have internal predecessors, (651), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:01:07,986 INFO L276 IsEmpty]: Start isEmpty. Operand 661 states and 662 transitions. [2022-01-31 23:01:07,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 660 [2022-01-31 23:01:07,989 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:01:07,989 INFO L514 BasicCegarLoop]: trace histogram [123, 122, 122, 122, 122, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:01:07,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2022-01-31 23:01:07,989 INFO L402 AbstractCegarLoop]: === Iteration 126 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:01:07,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:01:07,989 INFO L85 PathProgramCache]: Analyzing trace with hash -173063535, now seen corresponding path program 122 times [2022-01-31 23:01:07,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:01:07,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1583755013] [2022-01-31 23:01:07,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:01:07,992 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 23:01:07,992 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 23:01:07,992 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:01:08,001 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:01:08,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:01:12,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:01:12,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:01:12,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 23:01:12,718 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:01:12,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1583755013] [2022-01-31 23:01:12,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1583755013] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:01:12,718 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:01:12,718 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [135] imperfect sequences [] total 135 [2022-01-31 23:01:12,718 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722329001] [2022-01-31 23:01:12,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:01:12,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 135 states [2022-01-31 23:01:12,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:01:12,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 135 interpolants. [2022-01-31 23:01:12,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8913, Invalid=9177, Unknown=0, NotChecked=0, Total=18090 [2022-01-31 23:01:12,723 INFO L87 Difference]: Start difference. First operand 661 states and 662 transitions. Second operand has 135 states, 135 states have (on average 4.859259259259259) internal successors, (656), 134 states have internal predecessors, (656), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:01:14,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:01:14,159 INFO L93 Difference]: Finished difference Result 676 states and 678 transitions. [2022-01-31 23:01:14,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2022-01-31 23:01:14,159 INFO L78 Accepts]: Start accepts. Automaton has has 135 states, 135 states have (on average 4.859259259259259) internal successors, (656), 134 states have internal predecessors, (656), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 659 [2022-01-31 23:01:14,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:01:14,161 INFO L225 Difference]: With dead ends: 676 [2022-01-31 23:01:14,161 INFO L226 Difference]: Without dead ends: 669 [2022-01-31 23:01:14,161 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=8913, Invalid=9177, Unknown=0, NotChecked=0, Total=18090 [2022-01-31 23:01:14,162 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 501 mSDsluCounter, 535 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 501 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 23:01:14,162 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [501 Valid, 570 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 23:01:14,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2022-01-31 23:01:15,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 666. [2022-01-31 23:01:15,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 666 states, 662 states have (on average 1.0030211480362539) internal successors, (664), 662 states have internal predecessors, (664), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:01:15,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 667 transitions. [2022-01-31 23:01:15,067 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 667 transitions. Word has length 659 [2022-01-31 23:01:15,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:01:15,068 INFO L470 AbstractCegarLoop]: Abstraction has 666 states and 667 transitions. [2022-01-31 23:01:15,068 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 135 states, 135 states have (on average 4.859259259259259) internal successors, (656), 134 states have internal predecessors, (656), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:01:15,068 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 667 transitions. [2022-01-31 23:01:15,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 665 [2022-01-31 23:01:15,071 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:01:15,071 INFO L514 BasicCegarLoop]: trace histogram [124, 123, 123, 123, 123, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:01:15,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2022-01-31 23:01:15,071 INFO L402 AbstractCegarLoop]: === Iteration 127 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:01:15,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:01:15,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1090224662, now seen corresponding path program 123 times [2022-01-31 23:01:15,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:01:15,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1514641490] [2022-01-31 23:01:15,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:01:15,074 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 23:01:15,074 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 23:01:15,074 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:01:15,087 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:01:15,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:01:19,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:01:19,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:01:19,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 23:01:19,899 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:01:19,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1514641490] [2022-01-31 23:01:19,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1514641490] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:01:19,899 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:01:19,899 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [136] imperfect sequences [] total 136 [2022-01-31 23:01:19,899 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636944194] [2022-01-31 23:01:19,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:01:19,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 136 states [2022-01-31 23:01:19,900 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:01:19,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 136 interpolants. [2022-01-31 23:01:19,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9047, Invalid=9313, Unknown=0, NotChecked=0, Total=18360 [2022-01-31 23:01:19,904 INFO L87 Difference]: Start difference. First operand 666 states and 667 transitions. Second operand has 136 states, 136 states have (on average 4.860294117647059) internal successors, (661), 135 states have internal predecessors, (661), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:01:21,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:01:21,436 INFO L93 Difference]: Finished difference Result 681 states and 683 transitions. [2022-01-31 23:01:21,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2022-01-31 23:01:21,436 INFO L78 Accepts]: Start accepts. Automaton has has 136 states, 136 states have (on average 4.860294117647059) internal successors, (661), 135 states have internal predecessors, (661), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 664 [2022-01-31 23:01:21,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:01:21,438 INFO L225 Difference]: With dead ends: 681 [2022-01-31 23:01:21,438 INFO L226 Difference]: Without dead ends: 674 [2022-01-31 23:01:21,438 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=9047, Invalid=9313, Unknown=0, NotChecked=0, Total=18360 [2022-01-31 23:01:21,439 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 558 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 558 SdHoareTripleChecker+Valid, 538 SdHoareTripleChecker+Invalid, 441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 23:01:21,439 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [558 Valid, 538 Invalid, 441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 23:01:21,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 674 states. [2022-01-31 23:01:22,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 674 to 671. [2022-01-31 23:01:22,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 671 states, 667 states have (on average 1.0029985007496252) internal successors, (669), 667 states have internal predecessors, (669), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:01:22,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 672 transitions. [2022-01-31 23:01:22,349 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 672 transitions. Word has length 664 [2022-01-31 23:01:22,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:01:22,349 INFO L470 AbstractCegarLoop]: Abstraction has 671 states and 672 transitions. [2022-01-31 23:01:22,349 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 136 states, 136 states have (on average 4.860294117647059) internal successors, (661), 135 states have internal predecessors, (661), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:01:22,349 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 672 transitions. [2022-01-31 23:01:22,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 670 [2022-01-31 23:01:22,352 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:01:22,352 INFO L514 BasicCegarLoop]: trace histogram [125, 124, 124, 124, 124, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:01:22,352 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2022-01-31 23:01:22,352 INFO L402 AbstractCegarLoop]: === Iteration 128 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:01:22,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:01:22,353 INFO L85 PathProgramCache]: Analyzing trace with hash -1988940367, now seen corresponding path program 124 times [2022-01-31 23:01:22,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:01:22,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [82279978] [2022-01-31 23:01:22,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:01:22,355 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 23:01:22,355 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 23:01:22,355 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:01:22,364 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:01:22,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:01:27,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:01:27,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:01:27,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 23:01:27,211 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:01:27,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [82279978] [2022-01-31 23:01:27,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [82279978] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:01:27,212 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:01:27,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [137] imperfect sequences [] total 137 [2022-01-31 23:01:27,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599062308] [2022-01-31 23:01:27,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:01:27,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 137 states [2022-01-31 23:01:27,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:01:27,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 137 interpolants. [2022-01-31 23:01:27,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9182, Invalid=9450, Unknown=0, NotChecked=0, Total=18632 [2022-01-31 23:01:27,215 INFO L87 Difference]: Start difference. First operand 671 states and 672 transitions. Second operand has 137 states, 137 states have (on average 4.861313868613139) internal successors, (666), 136 states have internal predecessors, (666), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:01:28,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:01:28,706 INFO L93 Difference]: Finished difference Result 686 states and 688 transitions. [2022-01-31 23:01:28,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2022-01-31 23:01:28,706 INFO L78 Accepts]: Start accepts. Automaton has has 137 states, 137 states have (on average 4.861313868613139) internal successors, (666), 136 states have internal predecessors, (666), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 669 [2022-01-31 23:01:28,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:01:28,708 INFO L225 Difference]: With dead ends: 686 [2022-01-31 23:01:28,708 INFO L226 Difference]: Without dead ends: 679 [2022-01-31 23:01:28,709 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=9182, Invalid=9450, Unknown=0, NotChecked=0, Total=18632 [2022-01-31 23:01:28,709 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 498 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 498 SdHoareTripleChecker+Valid, 493 SdHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 23:01:28,709 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [498 Valid, 493 Invalid, 407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 23:01:28,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 679 states. [2022-01-31 23:01:29,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 679 to 676. [2022-01-31 23:01:29,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 676 states, 672 states have (on average 1.0029761904761905) internal successors, (674), 672 states have internal predecessors, (674), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:01:29,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 676 states to 676 states and 677 transitions. [2022-01-31 23:01:29,639 INFO L78 Accepts]: Start accepts. Automaton has 676 states and 677 transitions. Word has length 669 [2022-01-31 23:01:29,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:01:29,640 INFO L470 AbstractCegarLoop]: Abstraction has 676 states and 677 transitions. [2022-01-31 23:01:29,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 137 states, 137 states have (on average 4.861313868613139) internal successors, (666), 136 states have internal predecessors, (666), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:01:29,640 INFO L276 IsEmpty]: Start isEmpty. Operand 676 states and 677 transitions. [2022-01-31 23:01:29,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 675 [2022-01-31 23:01:29,643 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:01:29,643 INFO L514 BasicCegarLoop]: trace histogram [126, 125, 125, 125, 125, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:01:29,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2022-01-31 23:01:29,643 INFO L402 AbstractCegarLoop]: === Iteration 129 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:01:29,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:01:29,643 INFO L85 PathProgramCache]: Analyzing trace with hash -930247946, now seen corresponding path program 125 times [2022-01-31 23:01:29,643 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:01:29,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1075608733] [2022-01-31 23:01:29,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:01:29,646 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 23:01:29,646 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 23:01:29,646 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:01:29,655 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:01:29,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:01:34,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:01:34,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:01:34,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 23:01:34,158 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:01:34,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1075608733] [2022-01-31 23:01:34,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1075608733] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:01:34,159 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:01:34,159 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [138] imperfect sequences [] total 138 [2022-01-31 23:01:34,159 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530666525] [2022-01-31 23:01:34,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:01:34,159 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 138 states [2022-01-31 23:01:34,159 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:01:34,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 138 interpolants. [2022-01-31 23:01:34,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9318, Invalid=9588, Unknown=0, NotChecked=0, Total=18906 [2022-01-31 23:01:34,164 INFO L87 Difference]: Start difference. First operand 676 states and 677 transitions. Second operand has 138 states, 138 states have (on average 4.86231884057971) internal successors, (671), 137 states have internal predecessors, (671), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:01:35,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:01:35,684 INFO L93 Difference]: Finished difference Result 691 states and 693 transitions. [2022-01-31 23:01:35,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2022-01-31 23:01:35,685 INFO L78 Accepts]: Start accepts. Automaton has has 138 states, 138 states have (on average 4.86231884057971) internal successors, (671), 137 states have internal predecessors, (671), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 674 [2022-01-31 23:01:35,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:01:35,687 INFO L225 Difference]: With dead ends: 691 [2022-01-31 23:01:35,687 INFO L226 Difference]: Without dead ends: 684 [2022-01-31 23:01:35,688 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=9318, Invalid=9588, Unknown=0, NotChecked=0, Total=18906 [2022-01-31 23:01:35,688 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 441 mSDsluCounter, 523 mSDsCounter, 0 mSdLazyCounter, 367 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 441 SdHoareTripleChecker+Valid, 558 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 23:01:35,689 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [441 Valid, 558 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 367 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 23:01:35,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states. [2022-01-31 23:01:36,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 681. [2022-01-31 23:01:36,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 681 states, 677 states have (on average 1.0029542097488922) internal successors, (679), 677 states have internal predecessors, (679), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:01:36,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 681 states to 681 states and 682 transitions. [2022-01-31 23:01:36,654 INFO L78 Accepts]: Start accepts. Automaton has 681 states and 682 transitions. Word has length 674 [2022-01-31 23:01:36,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:01:36,655 INFO L470 AbstractCegarLoop]: Abstraction has 681 states and 682 transitions. [2022-01-31 23:01:36,655 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 138 states, 138 states have (on average 4.86231884057971) internal successors, (671), 137 states have internal predecessors, (671), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:01:36,655 INFO L276 IsEmpty]: Start isEmpty. Operand 681 states and 682 transitions. [2022-01-31 23:01:36,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 680 [2022-01-31 23:01:36,658 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:01:36,658 INFO L514 BasicCegarLoop]: trace histogram [127, 126, 126, 126, 126, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:01:36,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2022-01-31 23:01:36,658 INFO L402 AbstractCegarLoop]: === Iteration 130 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:01:36,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:01:36,658 INFO L85 PathProgramCache]: Analyzing trace with hash 304328913, now seen corresponding path program 126 times [2022-01-31 23:01:36,658 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:01:36,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1528253210] [2022-01-31 23:01:36,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:01:36,661 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 23:01:36,662 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 23:01:36,662 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:01:36,671 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:01:36,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:01:41,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:01:41,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:01:41,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 23:01:41,099 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:01:41,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1528253210] [2022-01-31 23:01:41,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1528253210] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:01:41,099 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:01:41,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [139] imperfect sequences [] total 139 [2022-01-31 23:01:41,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021087531] [2022-01-31 23:01:41,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:01:41,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 139 states [2022-01-31 23:01:41,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:01:41,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 139 interpolants. [2022-01-31 23:01:41,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9455, Invalid=9727, Unknown=0, NotChecked=0, Total=19182 [2022-01-31 23:01:41,104 INFO L87 Difference]: Start difference. First operand 681 states and 682 transitions. Second operand has 139 states, 139 states have (on average 4.863309352517986) internal successors, (676), 138 states have internal predecessors, (676), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:01:42,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:01:42,564 INFO L93 Difference]: Finished difference Result 696 states and 698 transitions. [2022-01-31 23:01:42,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2022-01-31 23:01:42,564 INFO L78 Accepts]: Start accepts. Automaton has has 139 states, 139 states have (on average 4.863309352517986) internal successors, (676), 138 states have internal predecessors, (676), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 679 [2022-01-31 23:01:42,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:01:42,565 INFO L225 Difference]: With dead ends: 696 [2022-01-31 23:01:42,565 INFO L226 Difference]: Without dead ends: 689 [2022-01-31 23:01:42,566 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=9455, Invalid=9727, Unknown=0, NotChecked=0, Total=19182 [2022-01-31 23:01:42,566 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 537 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 537 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 23:01:42,567 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [537 Valid, 475 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 23:01:42,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2022-01-31 23:01:43,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 686. [2022-01-31 23:01:43,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 686 states, 682 states have (on average 1.002932551319648) internal successors, (684), 682 states have internal predecessors, (684), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:01:43,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 686 states to 686 states and 687 transitions. [2022-01-31 23:01:43,533 INFO L78 Accepts]: Start accepts. Automaton has 686 states and 687 transitions. Word has length 679 [2022-01-31 23:01:43,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:01:43,534 INFO L470 AbstractCegarLoop]: Abstraction has 686 states and 687 transitions. [2022-01-31 23:01:43,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 139 states, 139 states have (on average 4.863309352517986) internal successors, (676), 138 states have internal predecessors, (676), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:01:43,534 INFO L276 IsEmpty]: Start isEmpty. Operand 686 states and 687 transitions. [2022-01-31 23:01:43,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 685 [2022-01-31 23:01:43,537 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:01:43,537 INFO L514 BasicCegarLoop]: trace histogram [128, 127, 127, 127, 127, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:01:43,537 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2022-01-31 23:01:43,537 INFO L402 AbstractCegarLoop]: === Iteration 131 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:01:43,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:01:43,537 INFO L85 PathProgramCache]: Analyzing trace with hash -279839786, now seen corresponding path program 127 times [2022-01-31 23:01:43,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:01:43,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [562194766] [2022-01-31 23:01:43,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:01:43,563 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 23:01:43,563 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 23:01:43,563 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:01:43,572 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:01:43,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:01:48,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:01:48,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:01:48,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 23:01:48,174 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:01:48,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [562194766] [2022-01-31 23:01:48,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [562194766] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:01:48,174 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:01:48,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [140] imperfect sequences [] total 140 [2022-01-31 23:01:48,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978349604] [2022-01-31 23:01:48,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:01:48,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 140 states [2022-01-31 23:01:48,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:01:48,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 140 interpolants. [2022-01-31 23:01:48,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9593, Invalid=9867, Unknown=0, NotChecked=0, Total=19460 [2022-01-31 23:01:48,180 INFO L87 Difference]: Start difference. First operand 686 states and 687 transitions. Second operand has 140 states, 140 states have (on average 4.864285714285714) internal successors, (681), 139 states have internal predecessors, (681), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:01:49,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:01:49,615 INFO L93 Difference]: Finished difference Result 701 states and 703 transitions. [2022-01-31 23:01:49,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2022-01-31 23:01:49,615 INFO L78 Accepts]: Start accepts. Automaton has has 140 states, 140 states have (on average 4.864285714285714) internal successors, (681), 139 states have internal predecessors, (681), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 684 [2022-01-31 23:01:49,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:01:49,617 INFO L225 Difference]: With dead ends: 701 [2022-01-31 23:01:49,617 INFO L226 Difference]: Without dead ends: 694 [2022-01-31 23:01:49,618 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=9593, Invalid=9867, Unknown=0, NotChecked=0, Total=19460 [2022-01-31 23:01:49,618 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 588 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 588 SdHoareTripleChecker+Valid, 506 SdHoareTripleChecker+Invalid, 445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 23:01:49,618 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [588 Valid, 506 Invalid, 445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 23:01:49,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2022-01-31 23:01:50,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 691. [2022-01-31 23:01:50,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 691 states, 687 states have (on average 1.002911208151383) internal successors, (689), 687 states have internal predecessors, (689), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:01:50,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 692 transitions. [2022-01-31 23:01:50,624 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 692 transitions. Word has length 684 [2022-01-31 23:01:50,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:01:50,624 INFO L470 AbstractCegarLoop]: Abstraction has 691 states and 692 transitions. [2022-01-31 23:01:50,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 140 states, 140 states have (on average 4.864285714285714) internal successors, (681), 139 states have internal predecessors, (681), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:01:50,625 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 692 transitions. [2022-01-31 23:01:50,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 690 [2022-01-31 23:01:50,628 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:01:50,628 INFO L514 BasicCegarLoop]: trace histogram [129, 128, 128, 128, 128, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:01:50,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2022-01-31 23:01:50,628 INFO L402 AbstractCegarLoop]: === Iteration 132 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:01:50,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:01:50,628 INFO L85 PathProgramCache]: Analyzing trace with hash 585288689, now seen corresponding path program 128 times [2022-01-31 23:01:50,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:01:50,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [471844731] [2022-01-31 23:01:50,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:01:50,634 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 23:01:50,634 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 23:01:50,634 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:01:50,660 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:01:50,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:01:55,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:01:55,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:01:55,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 23:01:55,309 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:01:55,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [471844731] [2022-01-31 23:01:55,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [471844731] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:01:55,310 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:01:55,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [141] imperfect sequences [] total 141 [2022-01-31 23:01:55,310 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83694695] [2022-01-31 23:01:55,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:01:55,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 141 states [2022-01-31 23:01:55,310 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:01:55,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 141 interpolants. [2022-01-31 23:01:55,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9732, Invalid=10008, Unknown=0, NotChecked=0, Total=19740 [2022-01-31 23:01:55,312 INFO L87 Difference]: Start difference. First operand 691 states and 692 transitions. Second operand has 141 states, 141 states have (on average 4.865248226950355) internal successors, (686), 140 states have internal predecessors, (686), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:01:56,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:01:56,853 INFO L93 Difference]: Finished difference Result 706 states and 708 transitions. [2022-01-31 23:01:56,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2022-01-31 23:01:56,854 INFO L78 Accepts]: Start accepts. Automaton has has 141 states, 141 states have (on average 4.865248226950355) internal successors, (686), 140 states have internal predecessors, (686), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 689 [2022-01-31 23:01:56,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:01:56,855 INFO L225 Difference]: With dead ends: 706 [2022-01-31 23:01:56,855 INFO L226 Difference]: Without dead ends: 699 [2022-01-31 23:01:56,856 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=9732, Invalid=10008, Unknown=0, NotChecked=0, Total=19740 [2022-01-31 23:01:56,856 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 543 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 543 SdHoareTripleChecker+Valid, 574 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 23:01:56,856 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [543 Valid, 574 Invalid, 438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 380 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 23:01:56,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2022-01-31 23:01:57,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 696. [2022-01-31 23:01:57,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 696 states, 692 states have (on average 1.0028901734104045) internal successors, (694), 692 states have internal predecessors, (694), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:01:57,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 697 transitions. [2022-01-31 23:01:57,908 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 697 transitions. Word has length 689 [2022-01-31 23:01:57,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:01:57,908 INFO L470 AbstractCegarLoop]: Abstraction has 696 states and 697 transitions. [2022-01-31 23:01:57,908 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 141 states, 141 states have (on average 4.865248226950355) internal successors, (686), 140 states have internal predecessors, (686), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:01:57,908 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 697 transitions. [2022-01-31 23:01:57,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 695 [2022-01-31 23:01:57,911 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:01:57,912 INFO L514 BasicCegarLoop]: trace histogram [130, 129, 129, 129, 129, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:01:57,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2022-01-31 23:01:57,912 INFO L402 AbstractCegarLoop]: === Iteration 133 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:01:57,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:01:57,912 INFO L85 PathProgramCache]: Analyzing trace with hash -949562186, now seen corresponding path program 129 times [2022-01-31 23:01:57,912 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:01:57,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1015968207] [2022-01-31 23:01:57,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:01:57,914 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 23:01:57,914 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 23:01:57,914 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:01:57,923 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:01:57,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:02:02,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:02:02,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:02:02,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 23:02:02,294 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:02:02,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1015968207] [2022-01-31 23:02:02,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1015968207] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:02:02,294 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:02:02,294 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [142] imperfect sequences [] total 142 [2022-01-31 23:02:02,294 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393954153] [2022-01-31 23:02:02,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:02:02,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 142 states [2022-01-31 23:02:02,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:02:02,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 142 interpolants. [2022-01-31 23:02:02,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9872, Invalid=10150, Unknown=0, NotChecked=0, Total=20022 [2022-01-31 23:02:02,298 INFO L87 Difference]: Start difference. First operand 696 states and 697 transitions. Second operand has 142 states, 142 states have (on average 4.866197183098592) internal successors, (691), 141 states have internal predecessors, (691), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:02:03,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:02:03,856 INFO L93 Difference]: Finished difference Result 711 states and 713 transitions. [2022-01-31 23:02:03,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2022-01-31 23:02:03,857 INFO L78 Accepts]: Start accepts. Automaton has has 142 states, 142 states have (on average 4.866197183098592) internal successors, (691), 141 states have internal predecessors, (691), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 694 [2022-01-31 23:02:03,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:02:03,866 INFO L225 Difference]: With dead ends: 711 [2022-01-31 23:02:03,866 INFO L226 Difference]: Without dead ends: 704 [2022-01-31 23:02:03,867 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=9872, Invalid=10150, Unknown=0, NotChecked=0, Total=20022 [2022-01-31 23:02:03,868 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 522 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 522 SdHoareTripleChecker+Valid, 555 SdHoareTripleChecker+Invalid, 420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 23:02:03,868 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [522 Valid, 555 Invalid, 420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 370 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 23:02:03,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2022-01-31 23:02:04,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 701. [2022-01-31 23:02:04,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 701 states, 697 states have (on average 1.0028694404591105) internal successors, (699), 697 states have internal predecessors, (699), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:02:04,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 702 transitions. [2022-01-31 23:02:04,918 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 702 transitions. Word has length 694 [2022-01-31 23:02:04,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:02:04,918 INFO L470 AbstractCegarLoop]: Abstraction has 701 states and 702 transitions. [2022-01-31 23:02:04,918 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 142 states, 142 states have (on average 4.866197183098592) internal successors, (691), 141 states have internal predecessors, (691), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:02:04,918 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 702 transitions. [2022-01-31 23:02:04,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 700 [2022-01-31 23:02:04,921 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:02:04,921 INFO L514 BasicCegarLoop]: trace histogram [131, 130, 130, 130, 130, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:02:04,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2022-01-31 23:02:04,922 INFO L402 AbstractCegarLoop]: === Iteration 134 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:02:04,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:02:04,922 INFO L85 PathProgramCache]: Analyzing trace with hash 1280474897, now seen corresponding path program 130 times [2022-01-31 23:02:04,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:02:04,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [379954531] [2022-01-31 23:02:04,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:02:04,924 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 23:02:04,924 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 23:02:04,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:02:04,933 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:02:05,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:02:10,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:02:10,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:02:10,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 23:02:10,228 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:02:10,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [379954531] [2022-01-31 23:02:10,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [379954531] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:02:10,228 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:02:10,228 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [143] imperfect sequences [] total 143 [2022-01-31 23:02:10,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559281348] [2022-01-31 23:02:10,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:02:10,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 143 states [2022-01-31 23:02:10,229 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:02:10,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 143 interpolants. [2022-01-31 23:02:10,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10013, Invalid=10293, Unknown=0, NotChecked=0, Total=20306 [2022-01-31 23:02:10,233 INFO L87 Difference]: Start difference. First operand 701 states and 702 transitions. Second operand has 143 states, 143 states have (on average 4.8671328671328675) internal successors, (696), 142 states have internal predecessors, (696), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:02:11,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:02:11,951 INFO L93 Difference]: Finished difference Result 716 states and 718 transitions. [2022-01-31 23:02:11,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2022-01-31 23:02:11,951 INFO L78 Accepts]: Start accepts. Automaton has has 143 states, 143 states have (on average 4.8671328671328675) internal successors, (696), 142 states have internal predecessors, (696), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 699 [2022-01-31 23:02:11,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:02:11,954 INFO L225 Difference]: With dead ends: 716 [2022-01-31 23:02:11,954 INFO L226 Difference]: Without dead ends: 709 [2022-01-31 23:02:11,955 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=10013, Invalid=10293, Unknown=0, NotChecked=0, Total=20306 [2022-01-31 23:02:11,955 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 549 mSDsluCounter, 454 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 549 SdHoareTripleChecker+Valid, 489 SdHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 23:02:11,955 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [549 Valid, 489 Invalid, 428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 23:02:11,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 709 states. [2022-01-31 23:02:13,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 709 to 706. [2022-01-31 23:02:13,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 706 states, 702 states have (on average 1.002849002849003) internal successors, (704), 702 states have internal predecessors, (704), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:02:13,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 707 transitions. [2022-01-31 23:02:13,104 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 707 transitions. Word has length 699 [2022-01-31 23:02:13,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:02:13,105 INFO L470 AbstractCegarLoop]: Abstraction has 706 states and 707 transitions. [2022-01-31 23:02:13,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 143 states, 143 states have (on average 4.8671328671328675) internal successors, (696), 142 states have internal predecessors, (696), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:02:13,105 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 707 transitions. [2022-01-31 23:02:13,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 705 [2022-01-31 23:02:13,111 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:02:13,111 INFO L514 BasicCegarLoop]: trace histogram [132, 131, 131, 131, 131, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:02:13,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2022-01-31 23:02:13,111 INFO L402 AbstractCegarLoop]: === Iteration 135 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:02:13,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:02:13,112 INFO L85 PathProgramCache]: Analyzing trace with hash -714467946, now seen corresponding path program 131 times [2022-01-31 23:02:13,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:02:13,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [5593687] [2022-01-31 23:02:13,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:02:13,115 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 23:02:13,115 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 23:02:13,115 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:02:13,124 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:02:13,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:02:19,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:02:19,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:02:19,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 23:02:19,129 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:02:19,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [5593687] [2022-01-31 23:02:19,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [5593687] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:02:19,129 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:02:19,129 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [144] imperfect sequences [] total 144 [2022-01-31 23:02:19,129 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425578986] [2022-01-31 23:02:19,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:02:19,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 144 states [2022-01-31 23:02:19,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:02:19,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 144 interpolants. [2022-01-31 23:02:19,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10155, Invalid=10437, Unknown=0, NotChecked=0, Total=20592 [2022-01-31 23:02:19,133 INFO L87 Difference]: Start difference. First operand 706 states and 707 transitions. Second operand has 144 states, 144 states have (on average 4.868055555555555) internal successors, (701), 143 states have internal predecessors, (701), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:02:20,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:02:20,731 INFO L93 Difference]: Finished difference Result 721 states and 723 transitions. [2022-01-31 23:02:20,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2022-01-31 23:02:20,732 INFO L78 Accepts]: Start accepts. Automaton has has 144 states, 144 states have (on average 4.868055555555555) internal successors, (701), 143 states have internal predecessors, (701), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 704 [2022-01-31 23:02:20,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:02:20,733 INFO L225 Difference]: With dead ends: 721 [2022-01-31 23:02:20,733 INFO L226 Difference]: Without dead ends: 714 [2022-01-31 23:02:20,734 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=10155, Invalid=10437, Unknown=0, NotChecked=0, Total=20592 [2022-01-31 23:02:20,734 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 489 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 489 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 23:02:20,734 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [489 Valid, 545 Invalid, 404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 370 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 23:02:20,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 714 states. [2022-01-31 23:02:21,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 714 to 711. [2022-01-31 23:02:21,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 711 states, 707 states have (on average 1.002828854314003) internal successors, (709), 707 states have internal predecessors, (709), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:02:21,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 711 states to 711 states and 712 transitions. [2022-01-31 23:02:21,842 INFO L78 Accepts]: Start accepts. Automaton has 711 states and 712 transitions. Word has length 704 [2022-01-31 23:02:21,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:02:21,842 INFO L470 AbstractCegarLoop]: Abstraction has 711 states and 712 transitions. [2022-01-31 23:02:21,842 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 144 states, 144 states have (on average 4.868055555555555) internal successors, (701), 143 states have internal predecessors, (701), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:02:21,843 INFO L276 IsEmpty]: Start isEmpty. Operand 711 states and 712 transitions. [2022-01-31 23:02:21,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 710 [2022-01-31 23:02:21,846 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:02:21,846 INFO L514 BasicCegarLoop]: trace histogram [133, 132, 132, 132, 132, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:02:21,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2022-01-31 23:02:21,846 INFO L402 AbstractCegarLoop]: === Iteration 136 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:02:21,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:02:21,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1016384049, now seen corresponding path program 132 times [2022-01-31 23:02:21,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:02:21,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1505696193] [2022-01-31 23:02:21,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:02:21,873 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 23:02:21,874 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 23:02:21,874 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:02:21,884 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:02:21,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:02:28,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:02:28,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:02:28,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 23:02:28,055 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:02:28,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1505696193] [2022-01-31 23:02:28,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1505696193] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:02:28,055 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:02:28,055 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [145] imperfect sequences [] total 145 [2022-01-31 23:02:28,055 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951236618] [2022-01-31 23:02:28,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:02:28,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 145 states [2022-01-31 23:02:28,056 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:02:28,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 145 interpolants. [2022-01-31 23:02:28,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10298, Invalid=10582, Unknown=0, NotChecked=0, Total=20880 [2022-01-31 23:02:28,060 INFO L87 Difference]: Start difference. First operand 711 states and 712 transitions. Second operand has 145 states, 145 states have (on average 4.86896551724138) internal successors, (706), 144 states have internal predecessors, (706), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:02:29,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:02:29,762 INFO L93 Difference]: Finished difference Result 726 states and 728 transitions. [2022-01-31 23:02:29,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 145 states. [2022-01-31 23:02:29,763 INFO L78 Accepts]: Start accepts. Automaton has has 145 states, 145 states have (on average 4.86896551724138) internal successors, (706), 144 states have internal predecessors, (706), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 709 [2022-01-31 23:02:29,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:02:29,764 INFO L225 Difference]: With dead ends: 726 [2022-01-31 23:02:29,764 INFO L226 Difference]: Without dead ends: 719 [2022-01-31 23:02:29,765 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=10298, Invalid=10582, Unknown=0, NotChecked=0, Total=20880 [2022-01-31 23:02:29,765 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 468 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 402 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 468 SdHoareTripleChecker+Valid, 539 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 23:02:29,765 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [468 Valid, 539 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 402 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 23:02:29,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 719 states. [2022-01-31 23:02:30,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 719 to 716. [2022-01-31 23:02:30,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 716 states, 712 states have (on average 1.002808988764045) internal successors, (714), 712 states have internal predecessors, (714), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:02:30,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 716 states to 716 states and 717 transitions. [2022-01-31 23:02:30,879 INFO L78 Accepts]: Start accepts. Automaton has 716 states and 717 transitions. Word has length 709 [2022-01-31 23:02:30,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:02:30,879 INFO L470 AbstractCegarLoop]: Abstraction has 716 states and 717 transitions. [2022-01-31 23:02:30,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 145 states, 145 states have (on average 4.86896551724138) internal successors, (706), 144 states have internal predecessors, (706), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:02:30,880 INFO L276 IsEmpty]: Start isEmpty. Operand 716 states and 717 transitions. [2022-01-31 23:02:30,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 715 [2022-01-31 23:02:30,883 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:02:30,883 INFO L514 BasicCegarLoop]: trace histogram [134, 133, 133, 133, 133, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:02:30,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2022-01-31 23:02:30,883 INFO L402 AbstractCegarLoop]: === Iteration 137 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:02:30,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:02:30,884 INFO L85 PathProgramCache]: Analyzing trace with hash -260456842, now seen corresponding path program 133 times [2022-01-31 23:02:30,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:02:30,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2102949030] [2022-01-31 23:02:30,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:02:30,889 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 23:02:30,889 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 23:02:30,889 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:02:30,899 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:02:31,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:02:35,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:02:35,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:02:35,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 23:02:35,786 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:02:35,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2102949030] [2022-01-31 23:02:35,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2102949030] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:02:35,787 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:02:35,787 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [146] imperfect sequences [] total 146 [2022-01-31 23:02:35,787 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760100855] [2022-01-31 23:02:35,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:02:35,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 146 states [2022-01-31 23:02:35,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:02:35,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 146 interpolants. [2022-01-31 23:02:35,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10442, Invalid=10728, Unknown=0, NotChecked=0, Total=21170 [2022-01-31 23:02:35,790 INFO L87 Difference]: Start difference. First operand 716 states and 717 transitions. Second operand has 146 states, 146 states have (on average 4.86986301369863) internal successors, (711), 145 states have internal predecessors, (711), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:02:37,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:02:37,513 INFO L93 Difference]: Finished difference Result 731 states and 733 transitions. [2022-01-31 23:02:37,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2022-01-31 23:02:37,514 INFO L78 Accepts]: Start accepts. Automaton has has 146 states, 146 states have (on average 4.86986301369863) internal successors, (711), 145 states have internal predecessors, (711), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 714 [2022-01-31 23:02:37,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:02:37,515 INFO L225 Difference]: With dead ends: 731 [2022-01-31 23:02:37,515 INFO L226 Difference]: Without dead ends: 724 [2022-01-31 23:02:37,516 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=10442, Invalid=10728, Unknown=0, NotChecked=0, Total=21170 [2022-01-31 23:02:37,516 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 594 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 594 SdHoareTripleChecker+Valid, 564 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 23:02:37,516 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [594 Valid, 564 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 376 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 23:02:37,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2022-01-31 23:02:38,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 721. [2022-01-31 23:02:38,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 721 states, 717 states have (on average 1.00278940027894) internal successors, (719), 717 states have internal predecessors, (719), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:02:38,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 722 transitions. [2022-01-31 23:02:38,638 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 722 transitions. Word has length 714 [2022-01-31 23:02:38,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:02:38,638 INFO L470 AbstractCegarLoop]: Abstraction has 721 states and 722 transitions. [2022-01-31 23:02:38,638 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 146 states, 146 states have (on average 4.86986301369863) internal successors, (711), 145 states have internal predecessors, (711), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:02:38,638 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 722 transitions. [2022-01-31 23:02:38,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 720 [2022-01-31 23:02:38,641 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:02:38,641 INFO L514 BasicCegarLoop]: trace histogram [135, 134, 134, 134, 134, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:02:38,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2022-01-31 23:02:38,642 INFO L402 AbstractCegarLoop]: === Iteration 138 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:02:38,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:02:38,642 INFO L85 PathProgramCache]: Analyzing trace with hash -548688559, now seen corresponding path program 134 times [2022-01-31 23:02:38,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:02:38,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2031055456] [2022-01-31 23:02:38,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:02:38,644 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 23:02:38,644 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 23:02:38,644 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:02:38,653 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:02:38,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:02:45,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:02:45,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:02:45,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 23:02:45,229 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:02:45,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2031055456] [2022-01-31 23:02:45,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2031055456] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:02:45,229 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:02:45,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [147] imperfect sequences [] total 147 [2022-01-31 23:02:45,229 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170785647] [2022-01-31 23:02:45,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:02:45,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 147 states [2022-01-31 23:02:45,229 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:02:45,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 147 interpolants. [2022-01-31 23:02:45,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10587, Invalid=10875, Unknown=0, NotChecked=0, Total=21462 [2022-01-31 23:02:45,234 INFO L87 Difference]: Start difference. First operand 721 states and 722 transitions. Second operand has 147 states, 147 states have (on average 4.870748299319728) internal successors, (716), 146 states have internal predecessors, (716), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:02:46,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:02:46,948 INFO L93 Difference]: Finished difference Result 736 states and 738 transitions. [2022-01-31 23:02:46,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 147 states. [2022-01-31 23:02:46,948 INFO L78 Accepts]: Start accepts. Automaton has has 147 states, 147 states have (on average 4.870748299319728) internal successors, (716), 146 states have internal predecessors, (716), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 719 [2022-01-31 23:02:46,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:02:46,971 INFO L225 Difference]: With dead ends: 736 [2022-01-31 23:02:46,971 INFO L226 Difference]: Without dead ends: 729 [2022-01-31 23:02:46,972 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=10587, Invalid=10875, Unknown=0, NotChecked=0, Total=21462 [2022-01-31 23:02:46,973 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 558 mSDsluCounter, 507 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 558 SdHoareTripleChecker+Valid, 542 SdHoareTripleChecker+Invalid, 445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 23:02:46,973 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [558 Valid, 542 Invalid, 445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 386 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 23:02:46,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 729 states. [2022-01-31 23:02:48,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 729 to 726. [2022-01-31 23:02:48,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 726 states, 722 states have (on average 1.002770083102493) internal successors, (724), 722 states have internal predecessors, (724), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:02:48,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 726 states to 726 states and 727 transitions. [2022-01-31 23:02:48,238 INFO L78 Accepts]: Start accepts. Automaton has 726 states and 727 transitions. Word has length 719 [2022-01-31 23:02:48,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:02:48,239 INFO L470 AbstractCegarLoop]: Abstraction has 726 states and 727 transitions. [2022-01-31 23:02:48,239 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 147 states, 147 states have (on average 4.870748299319728) internal successors, (716), 146 states have internal predecessors, (716), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:02:48,239 INFO L276 IsEmpty]: Start isEmpty. Operand 726 states and 727 transitions. [2022-01-31 23:02:48,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 725 [2022-01-31 23:02:48,243 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:02:48,243 INFO L514 BasicCegarLoop]: trace histogram [136, 135, 135, 135, 135, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:02:48,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2022-01-31 23:02:48,243 INFO L402 AbstractCegarLoop]: === Iteration 139 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:02:48,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:02:48,244 INFO L85 PathProgramCache]: Analyzing trace with hash 573820758, now seen corresponding path program 135 times [2022-01-31 23:02:48,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:02:48,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1711658975] [2022-01-31 23:02:48,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:02:48,246 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 23:02:48,246 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 23:02:48,246 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:02:48,255 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:02:48,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:02:54,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:02:54,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:02:54,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 23:02:54,091 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:02:54,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1711658975] [2022-01-31 23:02:54,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1711658975] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:02:54,091 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:02:54,092 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [148] imperfect sequences [] total 148 [2022-01-31 23:02:54,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073980928] [2022-01-31 23:02:54,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:02:54,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 148 states [2022-01-31 23:02:54,092 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:02:54,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 148 interpolants. [2022-01-31 23:02:54,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10733, Invalid=11023, Unknown=0, NotChecked=0, Total=21756 [2022-01-31 23:02:54,096 INFO L87 Difference]: Start difference. First operand 726 states and 727 transitions. Second operand has 148 states, 148 states have (on average 4.871621621621622) internal successors, (721), 147 states have internal predecessors, (721), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:02:55,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:02:55,847 INFO L93 Difference]: Finished difference Result 741 states and 743 transitions. [2022-01-31 23:02:55,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2022-01-31 23:02:55,847 INFO L78 Accepts]: Start accepts. Automaton has has 148 states, 148 states have (on average 4.871621621621622) internal successors, (721), 147 states have internal predecessors, (721), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 724 [2022-01-31 23:02:55,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:02:55,864 INFO L225 Difference]: With dead ends: 741 [2022-01-31 23:02:55,864 INFO L226 Difference]: Without dead ends: 734 [2022-01-31 23:02:55,865 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=10733, Invalid=11023, Unknown=0, NotChecked=0, Total=21756 [2022-01-31 23:02:55,865 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 516 mSDsluCounter, 524 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 516 SdHoareTripleChecker+Valid, 559 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 23:02:55,865 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [516 Valid, 559 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 23:02:55,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 734 states. [2022-01-31 23:02:57,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 734 to 731. [2022-01-31 23:02:57,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 731 states, 727 states have (on average 1.0027510316368637) internal successors, (729), 727 states have internal predecessors, (729), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:02:57,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 731 states to 731 states and 732 transitions. [2022-01-31 23:02:57,104 INFO L78 Accepts]: Start accepts. Automaton has 731 states and 732 transitions. Word has length 724 [2022-01-31 23:02:57,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:02:57,104 INFO L470 AbstractCegarLoop]: Abstraction has 731 states and 732 transitions. [2022-01-31 23:02:57,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 148 states, 148 states have (on average 4.871621621621622) internal successors, (721), 147 states have internal predecessors, (721), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:02:57,104 INFO L276 IsEmpty]: Start isEmpty. Operand 731 states and 732 transitions. [2022-01-31 23:02:57,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 730 [2022-01-31 23:02:57,108 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:02:57,108 INFO L514 BasicCegarLoop]: trace histogram [137, 136, 136, 136, 136, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:02:57,108 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2022-01-31 23:02:57,108 INFO L402 AbstractCegarLoop]: === Iteration 140 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:02:57,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:02:57,109 INFO L85 PathProgramCache]: Analyzing trace with hash 2107189361, now seen corresponding path program 136 times [2022-01-31 23:02:57,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:02:57,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [766721158] [2022-01-31 23:02:57,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:02:57,111 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 23:02:57,111 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 23:02:57,111 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:02:57,121 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:02:57,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:03:03,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:03:03,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:03:03,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 23:03:03,745 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:03:03,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [766721158] [2022-01-31 23:03:03,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [766721158] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:03:03,745 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:03:03,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [149] imperfect sequences [] total 149 [2022-01-31 23:03:03,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540921448] [2022-01-31 23:03:03,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:03:03,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 149 states [2022-01-31 23:03:03,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:03:03,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 149 interpolants. [2022-01-31 23:03:03,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10880, Invalid=11172, Unknown=0, NotChecked=0, Total=22052 [2022-01-31 23:03:03,749 INFO L87 Difference]: Start difference. First operand 731 states and 732 transitions. Second operand has 149 states, 149 states have (on average 4.87248322147651) internal successors, (726), 148 states have internal predecessors, (726), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:03:05,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:03:05,464 INFO L93 Difference]: Finished difference Result 746 states and 748 transitions. [2022-01-31 23:03:05,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 149 states. [2022-01-31 23:03:05,465 INFO L78 Accepts]: Start accepts. Automaton has has 149 states, 149 states have (on average 4.87248322147651) internal successors, (726), 148 states have internal predecessors, (726), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 729 [2022-01-31 23:03:05,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:03:05,466 INFO L225 Difference]: With dead ends: 746 [2022-01-31 23:03:05,466 INFO L226 Difference]: Without dead ends: 739 [2022-01-31 23:03:05,467 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=10880, Invalid=11172, Unknown=0, NotChecked=0, Total=22052 [2022-01-31 23:03:05,467 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 555 mSDsluCounter, 538 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 555 SdHoareTripleChecker+Valid, 573 SdHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 23:03:05,467 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [555 Valid, 573 Invalid, 455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 403 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 23:03:05,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 739 states. [2022-01-31 23:03:06,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 739 to 736. [2022-01-31 23:03:06,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 736 states, 732 states have (on average 1.0027322404371584) internal successors, (734), 732 states have internal predecessors, (734), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:03:06,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 736 states to 736 states and 737 transitions. [2022-01-31 23:03:06,697 INFO L78 Accepts]: Start accepts. Automaton has 736 states and 737 transitions. Word has length 729 [2022-01-31 23:03:06,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:03:06,697 INFO L470 AbstractCegarLoop]: Abstraction has 736 states and 737 transitions. [2022-01-31 23:03:06,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 149 states, 149 states have (on average 4.87248322147651) internal successors, (726), 148 states have internal predecessors, (726), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:03:06,698 INFO L276 IsEmpty]: Start isEmpty. Operand 736 states and 737 transitions. [2022-01-31 23:03:06,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 735 [2022-01-31 23:03:06,701 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:03:06,701 INFO L514 BasicCegarLoop]: trace histogram [138, 137, 137, 137, 137, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:03:06,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2022-01-31 23:03:06,701 INFO L402 AbstractCegarLoop]: === Iteration 141 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:03:06,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:03:06,701 INFO L85 PathProgramCache]: Analyzing trace with hash -2034874314, now seen corresponding path program 137 times [2022-01-31 23:03:06,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:03:06,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1692182436] [2022-01-31 23:03:06,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:03:06,731 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 23:03:06,732 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 23:03:06,732 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:03:06,741 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:03:06,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:03:12,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:03:12,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:03:12,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 23:03:12,290 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:03:12,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1692182436] [2022-01-31 23:03:12,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1692182436] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:03:12,290 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:03:12,290 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [150] imperfect sequences [] total 150 [2022-01-31 23:03:12,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653703828] [2022-01-31 23:03:12,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:03:12,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 150 states [2022-01-31 23:03:12,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:03:12,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 150 interpolants. [2022-01-31 23:03:12,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11028, Invalid=11322, Unknown=0, NotChecked=0, Total=22350 [2022-01-31 23:03:12,294 INFO L87 Difference]: Start difference. First operand 736 states and 737 transitions. Second operand has 150 states, 150 states have (on average 4.873333333333333) internal successors, (731), 149 states have internal predecessors, (731), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:03:14,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:03:14,016 INFO L93 Difference]: Finished difference Result 751 states and 753 transitions. [2022-01-31 23:03:14,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 150 states. [2022-01-31 23:03:14,016 INFO L78 Accepts]: Start accepts. Automaton has has 150 states, 150 states have (on average 4.873333333333333) internal successors, (731), 149 states have internal predecessors, (731), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 734 [2022-01-31 23:03:14,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:03:14,017 INFO L225 Difference]: With dead ends: 751 [2022-01-31 23:03:14,017 INFO L226 Difference]: Without dead ends: 744 [2022-01-31 23:03:14,018 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=11028, Invalid=11322, Unknown=0, NotChecked=0, Total=22350 [2022-01-31 23:03:14,019 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 579 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 579 SdHoareTripleChecker+Valid, 548 SdHoareTripleChecker+Invalid, 461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 23:03:14,019 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [579 Valid, 548 Invalid, 461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 400 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 23:03:14,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2022-01-31 23:03:15,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 741. [2022-01-31 23:03:15,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 741 states, 737 states have (on average 1.0027137042062415) internal successors, (739), 737 states have internal predecessors, (739), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:03:15,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 741 states to 741 states and 742 transitions. [2022-01-31 23:03:15,270 INFO L78 Accepts]: Start accepts. Automaton has 741 states and 742 transitions. Word has length 734 [2022-01-31 23:03:15,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:03:15,270 INFO L470 AbstractCegarLoop]: Abstraction has 741 states and 742 transitions. [2022-01-31 23:03:15,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 150 states, 150 states have (on average 4.873333333333333) internal successors, (731), 149 states have internal predecessors, (731), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:03:15,270 INFO L276 IsEmpty]: Start isEmpty. Operand 741 states and 742 transitions. [2022-01-31 23:03:15,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 740 [2022-01-31 23:03:15,274 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:03:15,274 INFO L514 BasicCegarLoop]: trace histogram [139, 138, 138, 138, 138, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:03:15,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2022-01-31 23:03:15,274 INFO L402 AbstractCegarLoop]: === Iteration 142 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:03:15,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:03:15,274 INFO L85 PathProgramCache]: Analyzing trace with hash -568378479, now seen corresponding path program 138 times [2022-01-31 23:03:15,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:03:15,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [776967294] [2022-01-31 23:03:15,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:03:15,278 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 23:03:15,278 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 23:03:15,278 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:03:15,288 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:03:15,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:03:21,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:03:21,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:03:21,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 23:03:21,435 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:03:21,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [776967294] [2022-01-31 23:03:21,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [776967294] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:03:21,435 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:03:21,435 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [151] imperfect sequences [] total 151 [2022-01-31 23:03:21,435 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283484060] [2022-01-31 23:03:21,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:03:21,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 151 states [2022-01-31 23:03:21,436 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:03:21,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 151 interpolants. [2022-01-31 23:03:21,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11177, Invalid=11473, Unknown=0, NotChecked=0, Total=22650 [2022-01-31 23:03:21,439 INFO L87 Difference]: Start difference. First operand 741 states and 742 transitions. Second operand has 151 states, 151 states have (on average 4.874172185430464) internal successors, (736), 150 states have internal predecessors, (736), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:03:23,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:03:23,209 INFO L93 Difference]: Finished difference Result 756 states and 758 transitions. [2022-01-31 23:03:23,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 151 states. [2022-01-31 23:03:23,210 INFO L78 Accepts]: Start accepts. Automaton has has 151 states, 151 states have (on average 4.874172185430464) internal successors, (736), 150 states have internal predecessors, (736), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 739 [2022-01-31 23:03:23,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:03:23,211 INFO L225 Difference]: With dead ends: 756 [2022-01-31 23:03:23,211 INFO L226 Difference]: Without dead ends: 749 [2022-01-31 23:03:23,212 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=11177, Invalid=11473, Unknown=0, NotChecked=0, Total=22650 [2022-01-31 23:03:23,212 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 531 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 531 SdHoareTripleChecker+Valid, 538 SdHoareTripleChecker+Invalid, 431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 23:03:23,212 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [531 Valid, 538 Invalid, 431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 387 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 23:03:23,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2022-01-31 23:03:24,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 746. [2022-01-31 23:03:24,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 746 states, 742 states have (on average 1.0026954177897573) internal successors, (744), 742 states have internal predecessors, (744), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:03:24,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 746 states to 746 states and 747 transitions. [2022-01-31 23:03:24,459 INFO L78 Accepts]: Start accepts. Automaton has 746 states and 747 transitions. Word has length 739 [2022-01-31 23:03:24,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:03:24,460 INFO L470 AbstractCegarLoop]: Abstraction has 746 states and 747 transitions. [2022-01-31 23:03:24,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 151 states, 151 states have (on average 4.874172185430464) internal successors, (736), 150 states have internal predecessors, (736), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:03:24,460 INFO L276 IsEmpty]: Start isEmpty. Operand 746 states and 747 transitions. [2022-01-31 23:03:24,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 745 [2022-01-31 23:03:24,463 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:03:24,464 INFO L514 BasicCegarLoop]: trace histogram [140, 139, 139, 139, 139, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:03:24,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2022-01-31 23:03:24,464 INFO L402 AbstractCegarLoop]: === Iteration 143 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:03:24,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:03:24,464 INFO L85 PathProgramCache]: Analyzing trace with hash 748628246, now seen corresponding path program 139 times [2022-01-31 23:03:24,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:03:24,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2103256710] [2022-01-31 23:03:24,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:03:24,472 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 23:03:24,472 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 23:03:24,472 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:03:24,482 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:03:24,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:03:29,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:03:29,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:03:29,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 23:03:29,739 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:03:29,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2103256710] [2022-01-31 23:03:29,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2103256710] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:03:29,739 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:03:29,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [152] imperfect sequences [] total 152 [2022-01-31 23:03:29,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177741100] [2022-01-31 23:03:29,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:03:29,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 152 states [2022-01-31 23:03:29,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:03:29,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 152 interpolants. [2022-01-31 23:03:29,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11327, Invalid=11625, Unknown=0, NotChecked=0, Total=22952 [2022-01-31 23:03:29,744 INFO L87 Difference]: Start difference. First operand 746 states and 747 transitions. Second operand has 152 states, 152 states have (on average 4.875) internal successors, (741), 151 states have internal predecessors, (741), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:03:31,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:03:31,488 INFO L93 Difference]: Finished difference Result 761 states and 763 transitions. [2022-01-31 23:03:31,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 152 states. [2022-01-31 23:03:31,489 INFO L78 Accepts]: Start accepts. Automaton has has 152 states, 152 states have (on average 4.875) internal successors, (741), 151 states have internal predecessors, (741), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 744 [2022-01-31 23:03:31,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:03:31,490 INFO L225 Difference]: With dead ends: 761 [2022-01-31 23:03:31,490 INFO L226 Difference]: Without dead ends: 754 [2022-01-31 23:03:31,491 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=11327, Invalid=11625, Unknown=0, NotChecked=0, Total=22952 [2022-01-31 23:03:31,491 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 516 mSDsluCounter, 521 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 516 SdHoareTripleChecker+Valid, 556 SdHoareTripleChecker+Invalid, 431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 23:03:31,491 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [516 Valid, 556 Invalid, 431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 23:03:31,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2022-01-31 23:03:32,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 751. [2022-01-31 23:03:32,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 751 states, 747 states have (on average 1.002677376171352) internal successors, (749), 747 states have internal predecessors, (749), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:03:32,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 751 states to 751 states and 752 transitions. [2022-01-31 23:03:32,746 INFO L78 Accepts]: Start accepts. Automaton has 751 states and 752 transitions. Word has length 744 [2022-01-31 23:03:32,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:03:32,747 INFO L470 AbstractCegarLoop]: Abstraction has 751 states and 752 transitions. [2022-01-31 23:03:32,747 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 152 states, 152 states have (on average 4.875) internal successors, (741), 151 states have internal predecessors, (741), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:03:32,747 INFO L276 IsEmpty]: Start isEmpty. Operand 751 states and 752 transitions. [2022-01-31 23:03:32,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 750 [2022-01-31 23:03:32,750 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:03:32,750 INFO L514 BasicCegarLoop]: trace histogram [141, 140, 140, 140, 140, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:03:32,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2022-01-31 23:03:32,751 INFO L402 AbstractCegarLoop]: === Iteration 144 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:03:32,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:03:32,751 INFO L85 PathProgramCache]: Analyzing trace with hash 1694492337, now seen corresponding path program 140 times [2022-01-31 23:03:32,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:03:32,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [7680486] [2022-01-31 23:03:32,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:03:32,756 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 23:03:32,756 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 23:03:32,756 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:03:32,766 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:03:32,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:03:38,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:03:38,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:03:38,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 23:03:38,816 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:03:38,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [7680486] [2022-01-31 23:03:38,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [7680486] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:03:38,817 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:03:38,817 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [153] imperfect sequences [] total 153 [2022-01-31 23:03:38,817 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294801017] [2022-01-31 23:03:38,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:03:38,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 153 states [2022-01-31 23:03:38,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:03:38,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 153 interpolants. [2022-01-31 23:03:38,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11478, Invalid=11778, Unknown=0, NotChecked=0, Total=23256 [2022-01-31 23:03:38,822 INFO L87 Difference]: Start difference. First operand 751 states and 752 transitions. Second operand has 153 states, 153 states have (on average 4.875816993464053) internal successors, (746), 152 states have internal predecessors, (746), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:03:40,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:03:40,646 INFO L93 Difference]: Finished difference Result 766 states and 768 transitions. [2022-01-31 23:03:40,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2022-01-31 23:03:40,647 INFO L78 Accepts]: Start accepts. Automaton has has 153 states, 153 states have (on average 4.875816993464053) internal successors, (746), 152 states have internal predecessors, (746), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 749 [2022-01-31 23:03:40,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:03:40,648 INFO L225 Difference]: With dead ends: 766 [2022-01-31 23:03:40,648 INFO L226 Difference]: Without dead ends: 759 [2022-01-31 23:03:40,649 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=11478, Invalid=11778, Unknown=0, NotChecked=0, Total=23256 [2022-01-31 23:03:40,649 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 552 mSDsluCounter, 565 mSDsCounter, 0 mSdLazyCounter, 393 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 552 SdHoareTripleChecker+Valid, 600 SdHoareTripleChecker+Invalid, 441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 23:03:40,649 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [552 Valid, 600 Invalid, 441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 393 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 23:03:40,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 759 states. [2022-01-31 23:03:41,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 759 to 756. [2022-01-31 23:03:41,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 756 states, 752 states have (on average 1.002659574468085) internal successors, (754), 752 states have internal predecessors, (754), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:03:41,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 756 states to 756 states and 757 transitions. [2022-01-31 23:03:41,939 INFO L78 Accepts]: Start accepts. Automaton has 756 states and 757 transitions. Word has length 749 [2022-01-31 23:03:41,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:03:41,940 INFO L470 AbstractCegarLoop]: Abstraction has 756 states and 757 transitions. [2022-01-31 23:03:41,940 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 153 states, 153 states have (on average 4.875816993464053) internal successors, (746), 152 states have internal predecessors, (746), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:03:41,940 INFO L276 IsEmpty]: Start isEmpty. Operand 756 states and 757 transitions. [2022-01-31 23:03:41,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 755 [2022-01-31 23:03:41,943 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:03:41,944 INFO L514 BasicCegarLoop]: trace histogram [142, 141, 141, 141, 141, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:03:41,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2022-01-31 23:03:41,944 INFO L402 AbstractCegarLoop]: === Iteration 145 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:03:41,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:03:41,944 INFO L85 PathProgramCache]: Analyzing trace with hash -183733770, now seen corresponding path program 141 times [2022-01-31 23:03:41,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:03:41,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [304032339] [2022-01-31 23:03:41,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:03:41,946 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 23:03:41,946 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 23:03:41,946 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:03:41,956 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:03:42,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:03:49,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:03:49,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:03:49,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 23:03:49,148 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:03:49,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [304032339] [2022-01-31 23:03:49,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [304032339] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:03:49,148 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:03:49,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [154] imperfect sequences [] total 154 [2022-01-31 23:03:49,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979365990] [2022-01-31 23:03:49,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:03:49,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 154 states [2022-01-31 23:03:49,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:03:49,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 154 interpolants. [2022-01-31 23:03:49,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11630, Invalid=11932, Unknown=0, NotChecked=0, Total=23562 [2022-01-31 23:03:49,151 INFO L87 Difference]: Start difference. First operand 756 states and 757 transitions. Second operand has 154 states, 154 states have (on average 4.876623376623376) internal successors, (751), 153 states have internal predecessors, (751), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:03:50,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:03:50,979 INFO L93 Difference]: Finished difference Result 771 states and 773 transitions. [2022-01-31 23:03:50,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 154 states. [2022-01-31 23:03:50,979 INFO L78 Accepts]: Start accepts. Automaton has has 154 states, 154 states have (on average 4.876623376623376) internal successors, (751), 153 states have internal predecessors, (751), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 754 [2022-01-31 23:03:50,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:03:50,980 INFO L225 Difference]: With dead ends: 771 [2022-01-31 23:03:50,980 INFO L226 Difference]: Without dead ends: 764 [2022-01-31 23:03:50,981 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=11630, Invalid=11932, Unknown=0, NotChecked=0, Total=23562 [2022-01-31 23:03:50,981 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 567 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 567 SdHoareTripleChecker+Valid, 540 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 23:03:50,981 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [567 Valid, 540 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 399 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 23:03:50,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2022-01-31 23:03:52,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 761. [2022-01-31 23:03:52,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 761 states, 757 states have (on average 1.0026420079260239) internal successors, (759), 757 states have internal predecessors, (759), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:03:52,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 761 states to 761 states and 762 transitions. [2022-01-31 23:03:52,287 INFO L78 Accepts]: Start accepts. Automaton has 761 states and 762 transitions. Word has length 754 [2022-01-31 23:03:52,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:03:52,287 INFO L470 AbstractCegarLoop]: Abstraction has 761 states and 762 transitions. [2022-01-31 23:03:52,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 154 states, 154 states have (on average 4.876623376623376) internal successors, (751), 153 states have internal predecessors, (751), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:03:52,287 INFO L276 IsEmpty]: Start isEmpty. Operand 761 states and 762 transitions. [2022-01-31 23:03:52,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 760 [2022-01-31 23:03:52,291 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:03:52,291 INFO L514 BasicCegarLoop]: trace histogram [143, 142, 142, 142, 142, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:03:52,291 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2022-01-31 23:03:52,291 INFO L402 AbstractCegarLoop]: === Iteration 146 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:03:52,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:03:52,292 INFO L85 PathProgramCache]: Analyzing trace with hash 870132177, now seen corresponding path program 142 times [2022-01-31 23:03:52,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:03:52,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1001034428] [2022-01-31 23:03:52,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:03:52,296 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 23:03:52,296 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 23:03:52,296 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:03:52,306 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:03:52,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:03:57,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:03:57,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:03:57,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 23:03:57,873 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:03:57,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1001034428] [2022-01-31 23:03:57,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1001034428] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:03:57,873 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:03:57,873 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [155] imperfect sequences [] total 155 [2022-01-31 23:03:57,873 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366381678] [2022-01-31 23:03:57,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:03:57,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 155 states [2022-01-31 23:03:57,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:03:57,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 155 interpolants. [2022-01-31 23:03:57,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11783, Invalid=12087, Unknown=0, NotChecked=0, Total=23870 [2022-01-31 23:03:57,877 INFO L87 Difference]: Start difference. First operand 761 states and 762 transitions. Second operand has 155 states, 155 states have (on average 4.877419354838709) internal successors, (756), 154 states have internal predecessors, (756), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:03:59,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:03:59,717 INFO L93 Difference]: Finished difference Result 776 states and 778 transitions. [2022-01-31 23:03:59,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 155 states. [2022-01-31 23:03:59,717 INFO L78 Accepts]: Start accepts. Automaton has has 155 states, 155 states have (on average 4.877419354838709) internal successors, (756), 154 states have internal predecessors, (756), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 759 [2022-01-31 23:03:59,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:03:59,718 INFO L225 Difference]: With dead ends: 776 [2022-01-31 23:03:59,718 INFO L226 Difference]: Without dead ends: 769 [2022-01-31 23:03:59,719 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=11783, Invalid=12087, Unknown=0, NotChecked=0, Total=23870 [2022-01-31 23:03:59,719 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 525 mSDsluCounter, 550 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 525 SdHoareTripleChecker+Valid, 585 SdHoareTripleChecker+Invalid, 443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 23:03:59,719 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [525 Valid, 585 Invalid, 443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 406 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 23:03:59,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 769 states. [2022-01-31 23:04:01,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 769 to 766. [2022-01-31 23:04:01,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 766 states, 762 states have (on average 1.0026246719160106) internal successors, (764), 762 states have internal predecessors, (764), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:04:01,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 766 states to 766 states and 767 transitions. [2022-01-31 23:04:01,052 INFO L78 Accepts]: Start accepts. Automaton has 766 states and 767 transitions. Word has length 759 [2022-01-31 23:04:01,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:04:01,052 INFO L470 AbstractCegarLoop]: Abstraction has 766 states and 767 transitions. [2022-01-31 23:04:01,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 155 states, 155 states have (on average 4.877419354838709) internal successors, (756), 154 states have internal predecessors, (756), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:04:01,052 INFO L276 IsEmpty]: Start isEmpty. Operand 766 states and 767 transitions. [2022-01-31 23:04:01,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 765 [2022-01-31 23:04:01,056 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:04:01,056 INFO L514 BasicCegarLoop]: trace histogram [144, 143, 143, 143, 143, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:04:01,056 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2022-01-31 23:04:01,056 INFO L402 AbstractCegarLoop]: === Iteration 147 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:04:01,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:04:01,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1939612374, now seen corresponding path program 143 times [2022-01-31 23:04:01,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:04:01,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1468391040] [2022-01-31 23:04:01,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:04:01,058 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 23:04:01,058 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 23:04:01,058 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:04:01,069 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:04:01,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:04:08,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:04:08,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:04:08,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 23:04:08,632 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:04:08,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1468391040] [2022-01-31 23:04:08,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1468391040] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:04:08,632 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:04:08,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [156] imperfect sequences [] total 156 [2022-01-31 23:04:08,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103058622] [2022-01-31 23:04:08,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:04:08,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 156 states [2022-01-31 23:04:08,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:04:08,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 156 interpolants. [2022-01-31 23:04:08,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11937, Invalid=12243, Unknown=0, NotChecked=0, Total=24180 [2022-01-31 23:04:08,639 INFO L87 Difference]: Start difference. First operand 766 states and 767 transitions. Second operand has 156 states, 156 states have (on average 4.878205128205129) internal successors, (761), 155 states have internal predecessors, (761), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:04:10,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:04:10,629 INFO L93 Difference]: Finished difference Result 781 states and 783 transitions. [2022-01-31 23:04:10,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2022-01-31 23:04:10,629 INFO L78 Accepts]: Start accepts. Automaton has has 156 states, 156 states have (on average 4.878205128205129) internal successors, (761), 155 states have internal predecessors, (761), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 764 [2022-01-31 23:04:10,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:04:10,630 INFO L225 Difference]: With dead ends: 781 [2022-01-31 23:04:10,630 INFO L226 Difference]: Without dead ends: 774 [2022-01-31 23:04:10,631 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=11937, Invalid=12243, Unknown=0, NotChecked=0, Total=24180 [2022-01-31 23:04:10,632 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 540 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 427 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 540 SdHoareTripleChecker+Valid, 597 SdHoareTripleChecker+Invalid, 470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 23:04:10,632 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [540 Valid, 597 Invalid, 470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 427 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 23:04:10,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 774 states. [2022-01-31 23:04:12,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 774 to 771. [2022-01-31 23:04:12,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 771 states, 767 states have (on average 1.0026075619295958) internal successors, (769), 767 states have internal predecessors, (769), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:04:12,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 771 states to 771 states and 772 transitions. [2022-01-31 23:04:12,024 INFO L78 Accepts]: Start accepts. Automaton has 771 states and 772 transitions. Word has length 764 [2022-01-31 23:04:12,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:04:12,024 INFO L470 AbstractCegarLoop]: Abstraction has 771 states and 772 transitions. [2022-01-31 23:04:12,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 156 states, 156 states have (on average 4.878205128205129) internal successors, (761), 155 states have internal predecessors, (761), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:04:12,024 INFO L276 IsEmpty]: Start isEmpty. Operand 771 states and 772 transitions. [2022-01-31 23:04:12,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 770 [2022-01-31 23:04:12,028 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:04:12,028 INFO L514 BasicCegarLoop]: trace histogram [145, 144, 144, 144, 144, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:04:12,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2022-01-31 23:04:12,028 INFO L402 AbstractCegarLoop]: === Iteration 148 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:04:12,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:04:12,028 INFO L85 PathProgramCache]: Analyzing trace with hash 1238959345, now seen corresponding path program 144 times [2022-01-31 23:04:12,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:04:12,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1972755630] [2022-01-31 23:04:12,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:04:12,030 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 23:04:12,030 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 23:04:12,031 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:04:12,042 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:04:12,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:04:19,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:04:19,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:04:19,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 23:04:19,619 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:04:19,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1972755630] [2022-01-31 23:04:19,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1972755630] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:04:19,619 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:04:19,619 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [157] imperfect sequences [] total 157 [2022-01-31 23:04:19,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679764969] [2022-01-31 23:04:19,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:04:19,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 157 states [2022-01-31 23:04:19,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:04:19,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 157 interpolants. [2022-01-31 23:04:19,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12092, Invalid=12400, Unknown=0, NotChecked=0, Total=24492 [2022-01-31 23:04:19,623 INFO L87 Difference]: Start difference. First operand 771 states and 772 transitions. Second operand has 157 states, 157 states have (on average 4.8789808917197455) internal successors, (766), 156 states have internal predecessors, (766), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:04:21,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:04:21,650 INFO L93 Difference]: Finished difference Result 786 states and 788 transitions. [2022-01-31 23:04:21,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 157 states. [2022-01-31 23:04:21,650 INFO L78 Accepts]: Start accepts. Automaton has has 157 states, 157 states have (on average 4.8789808917197455) internal successors, (766), 156 states have internal predecessors, (766), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 769 [2022-01-31 23:04:21,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:04:21,651 INFO L225 Difference]: With dead ends: 786 [2022-01-31 23:04:21,652 INFO L226 Difference]: Without dead ends: 779 [2022-01-31 23:04:21,653 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=12092, Invalid=12400, Unknown=0, NotChecked=0, Total=24492 [2022-01-31 23:04:21,653 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 579 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 579 SdHoareTripleChecker+Valid, 555 SdHoareTripleChecker+Invalid, 458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 23:04:21,653 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [579 Valid, 555 Invalid, 458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 400 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 23:04:21,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 779 states. [2022-01-31 23:04:23,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 779 to 776. [2022-01-31 23:04:23,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 776 states, 772 states have (on average 1.0025906735751295) internal successors, (774), 772 states have internal predecessors, (774), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:04:23,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 776 states to 776 states and 777 transitions. [2022-01-31 23:04:23,051 INFO L78 Accepts]: Start accepts. Automaton has 776 states and 777 transitions. Word has length 769 [2022-01-31 23:04:23,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:04:23,052 INFO L470 AbstractCegarLoop]: Abstraction has 776 states and 777 transitions. [2022-01-31 23:04:23,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 157 states, 157 states have (on average 4.8789808917197455) internal successors, (766), 156 states have internal predecessors, (766), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:04:23,052 INFO L276 IsEmpty]: Start isEmpty. Operand 776 states and 777 transitions. [2022-01-31 23:04:23,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 775 [2022-01-31 23:04:23,056 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:04:23,056 INFO L514 BasicCegarLoop]: trace histogram [146, 145, 145, 145, 145, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:04:23,056 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2022-01-31 23:04:23,056 INFO L402 AbstractCegarLoop]: === Iteration 149 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:04:23,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:04:23,059 INFO L85 PathProgramCache]: Analyzing trace with hash -831767626, now seen corresponding path program 145 times [2022-01-31 23:04:23,059 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:04:23,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2077258666] [2022-01-31 23:04:23,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:04:23,061 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 23:04:23,061 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 23:04:23,061 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:04:23,074 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:04:23,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:04:29,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:04:29,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:04:29,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 23:04:29,005 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:04:29,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2077258666] [2022-01-31 23:04:29,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2077258666] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:04:29,005 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:04:29,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [158] imperfect sequences [] total 158 [2022-01-31 23:04:29,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560414860] [2022-01-31 23:04:29,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:04:29,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 158 states [2022-01-31 23:04:29,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:04:29,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 158 interpolants. [2022-01-31 23:04:29,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12248, Invalid=12558, Unknown=0, NotChecked=0, Total=24806 [2022-01-31 23:04:29,008 INFO L87 Difference]: Start difference. First operand 776 states and 777 transitions. Second operand has 158 states, 158 states have (on average 4.879746835443038) internal successors, (771), 157 states have internal predecessors, (771), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:04:31,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:04:31,017 INFO L93 Difference]: Finished difference Result 791 states and 793 transitions. [2022-01-31 23:04:31,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 158 states. [2022-01-31 23:04:31,018 INFO L78 Accepts]: Start accepts. Automaton has has 158 states, 158 states have (on average 4.879746835443038) internal successors, (771), 157 states have internal predecessors, (771), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 774 [2022-01-31 23:04:31,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:04:31,019 INFO L225 Difference]: With dead ends: 791 [2022-01-31 23:04:31,019 INFO L226 Difference]: Without dead ends: 784 [2022-01-31 23:04:31,020 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=12248, Invalid=12558, Unknown=0, NotChecked=0, Total=24806 [2022-01-31 23:04:31,020 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 633 mSDsluCounter, 617 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 633 SdHoareTripleChecker+Valid, 652 SdHoareTripleChecker+Invalid, 515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 23:04:31,020 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [633 Valid, 652 Invalid, 515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 23:04:31,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 784 states. [2022-01-31 23:04:32,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 784 to 781. [2022-01-31 23:04:32,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 781 states, 777 states have (on average 1.0025740025740026) internal successors, (779), 777 states have internal predecessors, (779), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:04:32,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 781 states to 781 states and 782 transitions. [2022-01-31 23:04:32,423 INFO L78 Accepts]: Start accepts. Automaton has 781 states and 782 transitions. Word has length 774 [2022-01-31 23:04:32,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:04:32,424 INFO L470 AbstractCegarLoop]: Abstraction has 781 states and 782 transitions. [2022-01-31 23:04:32,424 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 158 states, 158 states have (on average 4.879746835443038) internal successors, (771), 157 states have internal predecessors, (771), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:04:32,424 INFO L276 IsEmpty]: Start isEmpty. Operand 781 states and 782 transitions. [2022-01-31 23:04:32,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 780 [2022-01-31 23:04:32,428 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:04:32,428 INFO L514 BasicCegarLoop]: trace histogram [147, 146, 146, 146, 146, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:04:32,428 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2022-01-31 23:04:32,428 INFO L402 AbstractCegarLoop]: === Iteration 150 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:04:32,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:04:32,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1550485487, now seen corresponding path program 146 times [2022-01-31 23:04:32,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:04:32,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1108890299] [2022-01-31 23:04:32,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:04:32,430 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 23:04:32,430 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 23:04:32,430 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:04:32,442 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:04:32,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:04:37,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:04:37,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:04:37,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 23:04:37,969 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:04:37,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1108890299] [2022-01-31 23:04:37,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1108890299] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:04:37,969 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:04:37,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [159] imperfect sequences [] total 159 [2022-01-31 23:04:37,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449216450] [2022-01-31 23:04:37,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:04:37,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 159 states [2022-01-31 23:04:37,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:04:37,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 159 interpolants. [2022-01-31 23:04:37,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12405, Invalid=12717, Unknown=0, NotChecked=0, Total=25122 [2022-01-31 23:04:37,975 INFO L87 Difference]: Start difference. First operand 781 states and 782 transitions. Second operand has 159 states, 159 states have (on average 4.880503144654088) internal successors, (776), 158 states have internal predecessors, (776), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:04:39,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:04:39,999 INFO L93 Difference]: Finished difference Result 796 states and 798 transitions. [2022-01-31 23:04:40,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 159 states. [2022-01-31 23:04:40,000 INFO L78 Accepts]: Start accepts. Automaton has has 159 states, 159 states have (on average 4.880503144654088) internal successors, (776), 158 states have internal predecessors, (776), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 779 [2022-01-31 23:04:40,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:04:40,001 INFO L225 Difference]: With dead ends: 796 [2022-01-31 23:04:40,001 INFO L226 Difference]: Without dead ends: 789 [2022-01-31 23:04:40,002 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=12405, Invalid=12717, Unknown=0, NotChecked=0, Total=25122 [2022-01-31 23:04:40,002 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 546 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 546 SdHoareTripleChecker+Valid, 588 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 23:04:40,002 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [546 Valid, 588 Invalid, 449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 409 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 23:04:40,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 789 states. [2022-01-31 23:04:41,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 789 to 786. [2022-01-31 23:04:41,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 786 states, 782 states have (on average 1.0025575447570332) internal successors, (784), 782 states have internal predecessors, (784), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:04:41,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 786 states to 786 states and 787 transitions. [2022-01-31 23:04:41,437 INFO L78 Accepts]: Start accepts. Automaton has 786 states and 787 transitions. Word has length 779 [2022-01-31 23:04:41,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:04:41,438 INFO L470 AbstractCegarLoop]: Abstraction has 786 states and 787 transitions. [2022-01-31 23:04:41,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 159 states, 159 states have (on average 4.880503144654088) internal successors, (776), 158 states have internal predecessors, (776), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:04:41,438 INFO L276 IsEmpty]: Start isEmpty. Operand 786 states and 787 transitions. [2022-01-31 23:04:41,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 785 [2022-01-31 23:04:41,442 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:04:41,442 INFO L514 BasicCegarLoop]: trace histogram [148, 147, 147, 147, 147, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:04:41,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2022-01-31 23:04:41,442 INFO L402 AbstractCegarLoop]: === Iteration 151 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:04:41,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:04:41,442 INFO L85 PathProgramCache]: Analyzing trace with hash -1642414954, now seen corresponding path program 147 times [2022-01-31 23:04:41,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:04:41,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [947044277] [2022-01-31 23:04:41,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:04:41,444 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 23:04:41,444 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 23:04:41,444 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:04:41,456 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:04:41,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:04:46,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:04:46,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:04:46,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 23:04:46,095 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:04:46,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [947044277] [2022-01-31 23:04:46,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [947044277] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:04:46,095 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:04:46,095 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [160] imperfect sequences [] total 160 [2022-01-31 23:04:46,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594634261] [2022-01-31 23:04:46,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:04:46,095 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 160 states [2022-01-31 23:04:46,095 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:04:46,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 160 interpolants. [2022-01-31 23:04:46,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12563, Invalid=12877, Unknown=0, NotChecked=0, Total=25440 [2022-01-31 23:04:46,100 INFO L87 Difference]: Start difference. First operand 786 states and 787 transitions. Second operand has 160 states, 160 states have (on average 4.88125) internal successors, (781), 159 states have internal predecessors, (781), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:04:48,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:04:48,105 INFO L93 Difference]: Finished difference Result 801 states and 803 transitions. [2022-01-31 23:04:48,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 160 states. [2022-01-31 23:04:48,106 INFO L78 Accepts]: Start accepts. Automaton has has 160 states, 160 states have (on average 4.88125) internal successors, (781), 159 states have internal predecessors, (781), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 784 [2022-01-31 23:04:48,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:04:48,107 INFO L225 Difference]: With dead ends: 801 [2022-01-31 23:04:48,107 INFO L226 Difference]: Without dead ends: 794 [2022-01-31 23:04:48,108 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=12563, Invalid=12877, Unknown=0, NotChecked=0, Total=25440 [2022-01-31 23:04:48,108 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 567 mSDsluCounter, 575 mSDsCounter, 0 mSdLazyCounter, 417 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 567 SdHoareTripleChecker+Valid, 610 SdHoareTripleChecker+Invalid, 462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 23:04:48,108 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [567 Valid, 610 Invalid, 462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 417 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 23:04:48,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 794 states. [2022-01-31 23:04:49,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 794 to 791. [2022-01-31 23:04:49,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 791 states, 787 states have (on average 1.0025412960609912) internal successors, (789), 787 states have internal predecessors, (789), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:04:49,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 791 states to 791 states and 792 transitions. [2022-01-31 23:04:49,559 INFO L78 Accepts]: Start accepts. Automaton has 791 states and 792 transitions. Word has length 784 [2022-01-31 23:04:49,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:04:49,560 INFO L470 AbstractCegarLoop]: Abstraction has 791 states and 792 transitions. [2022-01-31 23:04:49,560 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 160 states, 160 states have (on average 4.88125) internal successors, (781), 159 states have internal predecessors, (781), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:04:49,560 INFO L276 IsEmpty]: Start isEmpty. Operand 791 states and 792 transitions. [2022-01-31 23:04:49,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 790 [2022-01-31 23:04:49,564 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:04:49,564 INFO L514 BasicCegarLoop]: trace histogram [149, 148, 148, 148, 148, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:04:49,564 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2022-01-31 23:04:49,564 INFO L402 AbstractCegarLoop]: === Iteration 152 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:04:49,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:04:49,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1530168113, now seen corresponding path program 148 times [2022-01-31 23:04:49,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:04:49,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1252025714] [2022-01-31 23:04:49,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:04:49,566 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 23:04:49,566 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 23:04:49,566 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:04:49,579 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:04:49,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:04:56,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:04:56,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:04:56,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 23:04:56,911 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:04:56,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1252025714] [2022-01-31 23:04:56,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1252025714] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:04:56,911 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:04:56,911 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [161] imperfect sequences [] total 161 [2022-01-31 23:04:56,911 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088718417] [2022-01-31 23:04:56,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:04:56,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 161 states [2022-01-31 23:04:56,912 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:04:56,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 161 interpolants. [2022-01-31 23:04:56,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12722, Invalid=13038, Unknown=0, NotChecked=0, Total=25760 [2022-01-31 23:04:56,916 INFO L87 Difference]: Start difference. First operand 791 states and 792 transitions. Second operand has 161 states, 161 states have (on average 4.881987577639752) internal successors, (786), 160 states have internal predecessors, (786), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:04:59,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:04:59,053 INFO L93 Difference]: Finished difference Result 806 states and 808 transitions. [2022-01-31 23:04:59,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 161 states. [2022-01-31 23:04:59,053 INFO L78 Accepts]: Start accepts. Automaton has has 161 states, 161 states have (on average 4.881987577639752) internal successors, (786), 160 states have internal predecessors, (786), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 789 [2022-01-31 23:04:59,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:04:59,054 INFO L225 Difference]: With dead ends: 806 [2022-01-31 23:04:59,054 INFO L226 Difference]: Without dead ends: 799 [2022-01-31 23:04:59,055 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=12722, Invalid=13038, Unknown=0, NotChecked=0, Total=25760 [2022-01-31 23:04:59,055 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 567 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 415 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 567 SdHoareTripleChecker+Valid, 597 SdHoareTripleChecker+Invalid, 461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 23:04:59,055 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [567 Valid, 597 Invalid, 461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 415 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 23:04:59,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 799 states. [2022-01-31 23:05:00,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 799 to 796. [2022-01-31 23:05:00,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 796 states, 792 states have (on average 1.0025252525252526) internal successors, (794), 792 states have internal predecessors, (794), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:05:00,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 796 states to 796 states and 797 transitions. [2022-01-31 23:05:00,567 INFO L78 Accepts]: Start accepts. Automaton has 796 states and 797 transitions. Word has length 789 [2022-01-31 23:05:00,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:05:00,568 INFO L470 AbstractCegarLoop]: Abstraction has 796 states and 797 transitions. [2022-01-31 23:05:00,568 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 161 states, 161 states have (on average 4.881987577639752) internal successors, (786), 160 states have internal predecessors, (786), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:05:00,568 INFO L276 IsEmpty]: Start isEmpty. Operand 796 states and 797 transitions. [2022-01-31 23:05:00,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 795 [2022-01-31 23:05:00,572 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:05:00,572 INFO L514 BasicCegarLoop]: trace histogram [150, 149, 149, 149, 149, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:05:00,572 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2022-01-31 23:05:00,572 INFO L402 AbstractCegarLoop]: === Iteration 153 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:05:00,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:05:00,572 INFO L85 PathProgramCache]: Analyzing trace with hash -842685066, now seen corresponding path program 149 times [2022-01-31 23:05:00,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:05:00,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1294170441] [2022-01-31 23:05:00,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:05:00,583 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 23:05:00,583 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 23:05:00,583 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:05:00,595 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:05:00,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:05:08,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:05:08,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:05:08,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 23:05:08,540 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:05:08,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1294170441] [2022-01-31 23:05:08,540 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1294170441] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:05:08,540 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:05:08,541 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [162] imperfect sequences [] total 162 [2022-01-31 23:05:08,541 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102052317] [2022-01-31 23:05:08,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:05:08,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 162 states [2022-01-31 23:05:08,541 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:05:08,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 162 interpolants. [2022-01-31 23:05:08,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12882, Invalid=13200, Unknown=0, NotChecked=0, Total=26082 [2022-01-31 23:05:08,546 INFO L87 Difference]: Start difference. First operand 796 states and 797 transitions. Second operand has 162 states, 162 states have (on average 4.882716049382716) internal successors, (791), 161 states have internal predecessors, (791), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:05:10,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:05:10,737 INFO L93 Difference]: Finished difference Result 811 states and 813 transitions. [2022-01-31 23:05:10,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 162 states. [2022-01-31 23:05:10,738 INFO L78 Accepts]: Start accepts. Automaton has has 162 states, 162 states have (on average 4.882716049382716) internal successors, (791), 161 states have internal predecessors, (791), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 794 [2022-01-31 23:05:10,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:05:10,739 INFO L225 Difference]: With dead ends: 811 [2022-01-31 23:05:10,739 INFO L226 Difference]: Without dead ends: 804 [2022-01-31 23:05:10,740 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=12882, Invalid=13200, Unknown=0, NotChecked=0, Total=26082 [2022-01-31 23:05:10,741 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 582 mSDsluCounter, 551 mSDsCounter, 0 mSdLazyCounter, 415 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 582 SdHoareTripleChecker+Valid, 586 SdHoareTripleChecker+Invalid, 467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 23:05:10,741 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [582 Valid, 586 Invalid, 467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 415 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 23:05:10,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 804 states. [2022-01-31 23:05:12,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 804 to 801. [2022-01-31 23:05:12,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 801 states, 797 states have (on average 1.002509410288582) internal successors, (799), 797 states have internal predecessors, (799), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:05:12,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 801 states to 801 states and 802 transitions. [2022-01-31 23:05:12,282 INFO L78 Accepts]: Start accepts. Automaton has 801 states and 802 transitions. Word has length 794 [2022-01-31 23:05:12,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:05:12,282 INFO L470 AbstractCegarLoop]: Abstraction has 801 states and 802 transitions. [2022-01-31 23:05:12,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 162 states, 162 states have (on average 4.882716049382716) internal successors, (791), 161 states have internal predecessors, (791), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:05:12,282 INFO L276 IsEmpty]: Start isEmpty. Operand 801 states and 802 transitions. [2022-01-31 23:05:12,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 800 [2022-01-31 23:05:12,286 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:05:12,286 INFO L514 BasicCegarLoop]: trace histogram [151, 150, 150, 150, 150, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:05:12,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2022-01-31 23:05:12,286 INFO L402 AbstractCegarLoop]: === Iteration 154 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:05:12,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:05:12,287 INFO L85 PathProgramCache]: Analyzing trace with hash -933747119, now seen corresponding path program 150 times [2022-01-31 23:05:12,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:05:12,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1533124953] [2022-01-31 23:05:12,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:05:12,289 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 23:05:12,289 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 23:05:12,289 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:05:12,300 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:05:12,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:05:20,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:05:20,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:05:20,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 23:05:20,246 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:05:20,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1533124953] [2022-01-31 23:05:20,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1533124953] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:05:20,246 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:05:20,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [163] imperfect sequences [] total 163 [2022-01-31 23:05:20,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212661065] [2022-01-31 23:05:20,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:05:20,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 163 states [2022-01-31 23:05:20,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:05:20,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 163 interpolants. [2022-01-31 23:05:20,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13043, Invalid=13363, Unknown=0, NotChecked=0, Total=26406 [2022-01-31 23:05:20,252 INFO L87 Difference]: Start difference. First operand 801 states and 802 transitions. Second operand has 163 states, 163 states have (on average 4.883435582822086) internal successors, (796), 162 states have internal predecessors, (796), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:05:22,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:05:22,469 INFO L93 Difference]: Finished difference Result 816 states and 818 transitions. [2022-01-31 23:05:22,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 163 states. [2022-01-31 23:05:22,469 INFO L78 Accepts]: Start accepts. Automaton has has 163 states, 163 states have (on average 4.883435582822086) internal successors, (796), 162 states have internal predecessors, (796), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 799 [2022-01-31 23:05:22,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:05:22,470 INFO L225 Difference]: With dead ends: 816 [2022-01-31 23:05:22,470 INFO L226 Difference]: Without dead ends: 809 [2022-01-31 23:05:22,471 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=13043, Invalid=13363, Unknown=0, NotChecked=0, Total=26406 [2022-01-31 23:05:22,471 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 579 mSDsluCounter, 584 mSDsCounter, 0 mSdLazyCounter, 414 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 579 SdHoareTripleChecker+Valid, 619 SdHoareTripleChecker+Invalid, 461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 23:05:22,471 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [579 Valid, 619 Invalid, 461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 414 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 23:05:22,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 809 states. [2022-01-31 23:05:24,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 809 to 806. [2022-01-31 23:05:24,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 806 states, 802 states have (on average 1.0024937655860349) internal successors, (804), 802 states have internal predecessors, (804), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:05:24,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 807 transitions. [2022-01-31 23:05:24,038 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 807 transitions. Word has length 799 [2022-01-31 23:05:24,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:05:24,038 INFO L470 AbstractCegarLoop]: Abstraction has 806 states and 807 transitions. [2022-01-31 23:05:24,039 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 163 states, 163 states have (on average 4.883435582822086) internal successors, (796), 162 states have internal predecessors, (796), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:05:24,039 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 807 transitions. [2022-01-31 23:05:24,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 805 [2022-01-31 23:05:24,043 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:05:24,043 INFO L514 BasicCegarLoop]: trace histogram [152, 151, 151, 151, 151, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:05:24,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2022-01-31 23:05:24,043 INFO L402 AbstractCegarLoop]: === Iteration 155 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:05:24,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:05:24,043 INFO L85 PathProgramCache]: Analyzing trace with hash 2064315990, now seen corresponding path program 151 times [2022-01-31 23:05:24,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:05:24,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [880415357] [2022-01-31 23:05:24,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:05:24,045 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 23:05:24,045 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 23:05:24,045 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:05:24,057 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:05:24,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:05:32,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:05:32,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:05:32,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 23:05:32,227 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:05:32,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [880415357] [2022-01-31 23:05:32,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [880415357] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:05:32,227 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:05:32,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [164] imperfect sequences [] total 164 [2022-01-31 23:05:32,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337986698] [2022-01-31 23:05:32,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:05:32,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 164 states [2022-01-31 23:05:32,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:05:32,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 164 interpolants. [2022-01-31 23:05:32,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13205, Invalid=13527, Unknown=0, NotChecked=0, Total=26732 [2022-01-31 23:05:32,230 INFO L87 Difference]: Start difference. First operand 806 states and 807 transitions. Second operand has 164 states, 164 states have (on average 4.884146341463414) internal successors, (801), 163 states have internal predecessors, (801), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:05:34,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:05:34,498 INFO L93 Difference]: Finished difference Result 821 states and 823 transitions. [2022-01-31 23:05:34,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 164 states. [2022-01-31 23:05:34,499 INFO L78 Accepts]: Start accepts. Automaton has has 164 states, 164 states have (on average 4.884146341463414) internal successors, (801), 163 states have internal predecessors, (801), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 804 [2022-01-31 23:05:34,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:05:34,500 INFO L225 Difference]: With dead ends: 821 [2022-01-31 23:05:34,500 INFO L226 Difference]: Without dead ends: 814 [2022-01-31 23:05:34,501 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=13205, Invalid=13527, Unknown=0, NotChecked=0, Total=26732 [2022-01-31 23:05:34,501 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 633 mSDsluCounter, 583 mSDsCounter, 0 mSdLazyCounter, 434 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 633 SdHoareTripleChecker+Valid, 618 SdHoareTripleChecker+Invalid, 501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 23:05:34,501 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [633 Valid, 618 Invalid, 501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 434 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 23:05:34,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 814 states. [2022-01-31 23:05:36,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 814 to 811. [2022-01-31 23:05:36,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 811 states, 807 states have (on average 1.0024783147459728) internal successors, (809), 807 states have internal predecessors, (809), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:05:36,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 811 states to 811 states and 812 transitions. [2022-01-31 23:05:36,071 INFO L78 Accepts]: Start accepts. Automaton has 811 states and 812 transitions. Word has length 804 [2022-01-31 23:05:36,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:05:36,071 INFO L470 AbstractCegarLoop]: Abstraction has 811 states and 812 transitions. [2022-01-31 23:05:36,071 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 164 states, 164 states have (on average 4.884146341463414) internal successors, (801), 163 states have internal predecessors, (801), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:05:36,071 INFO L276 IsEmpty]: Start isEmpty. Operand 811 states and 812 transitions. [2022-01-31 23:05:36,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 810 [2022-01-31 23:05:36,075 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:05:36,075 INFO L514 BasicCegarLoop]: trace histogram [153, 152, 152, 152, 152, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:05:36,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2022-01-31 23:05:36,076 INFO L402 AbstractCegarLoop]: === Iteration 156 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:05:36,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:05:36,076 INFO L85 PathProgramCache]: Analyzing trace with hash -1608359567, now seen corresponding path program 152 times [2022-01-31 23:05:36,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:05:36,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [594476160] [2022-01-31 23:05:36,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:05:36,078 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 23:05:36,078 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 23:05:36,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:05:36,090 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:05:36,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:05:42,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:05:42,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:05:42,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 23:05:42,006 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:05:42,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [594476160] [2022-01-31 23:05:42,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [594476160] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:05:42,006 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:05:42,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [165] imperfect sequences [] total 165 [2022-01-31 23:05:42,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745888450] [2022-01-31 23:05:42,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:05:42,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 165 states [2022-01-31 23:05:42,007 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:05:42,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 165 interpolants. [2022-01-31 23:05:42,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13368, Invalid=13692, Unknown=0, NotChecked=0, Total=27060 [2022-01-31 23:05:42,012 INFO L87 Difference]: Start difference. First operand 811 states and 812 transitions. Second operand has 165 states, 165 states have (on average 4.884848484848485) internal successors, (806), 164 states have internal predecessors, (806), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:05:44,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:05:44,214 INFO L93 Difference]: Finished difference Result 826 states and 828 transitions. [2022-01-31 23:05:44,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 165 states. [2022-01-31 23:05:44,214 INFO L78 Accepts]: Start accepts. Automaton has has 165 states, 165 states have (on average 4.884848484848485) internal successors, (806), 164 states have internal predecessors, (806), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 809 [2022-01-31 23:05:44,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:05:44,215 INFO L225 Difference]: With dead ends: 826 [2022-01-31 23:05:44,215 INFO L226 Difference]: Without dead ends: 819 [2022-01-31 23:05:44,216 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=13368, Invalid=13692, Unknown=0, NotChecked=0, Total=27060 [2022-01-31 23:05:44,216 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 609 mSDsluCounter, 578 mSDsCounter, 0 mSdLazyCounter, 417 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 609 SdHoareTripleChecker+Valid, 613 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 23:05:44,217 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [609 Valid, 613 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 417 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 23:05:44,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2022-01-31 23:05:45,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 816. [2022-01-31 23:05:45,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 816 states, 812 states have (on average 1.0024630541871922) internal successors, (814), 812 states have internal predecessors, (814), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:05:45,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 816 states to 816 states and 817 transitions. [2022-01-31 23:05:45,840 INFO L78 Accepts]: Start accepts. Automaton has 816 states and 817 transitions. Word has length 809 [2022-01-31 23:05:45,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:05:45,840 INFO L470 AbstractCegarLoop]: Abstraction has 816 states and 817 transitions. [2022-01-31 23:05:45,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 165 states, 165 states have (on average 4.884848484848485) internal successors, (806), 164 states have internal predecessors, (806), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:05:45,840 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 817 transitions. [2022-01-31 23:05:45,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 815 [2022-01-31 23:05:45,844 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:05:45,845 INFO L514 BasicCegarLoop]: trace histogram [154, 153, 153, 153, 153, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:05:45,845 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2022-01-31 23:05:45,845 INFO L402 AbstractCegarLoop]: === Iteration 157 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:05:45,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:05:45,845 INFO L85 PathProgramCache]: Analyzing trace with hash -704073930, now seen corresponding path program 153 times [2022-01-31 23:05:45,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:05:45,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [690608896] [2022-01-31 23:05:45,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:05:45,847 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 23:05:45,847 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 23:05:45,847 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:05:45,863 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:05:45,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:05:53,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:05:53,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:05:53,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 23:05:53,107 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:05:53,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [690608896] [2022-01-31 23:05:53,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [690608896] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:05:53,107 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:05:53,107 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [166] imperfect sequences [] total 166 [2022-01-31 23:05:53,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362808163] [2022-01-31 23:05:53,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:05:53,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 166 states [2022-01-31 23:05:53,108 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:05:53,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 166 interpolants. [2022-01-31 23:05:53,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13532, Invalid=13858, Unknown=0, NotChecked=0, Total=27390 [2022-01-31 23:05:53,112 INFO L87 Difference]: Start difference. First operand 816 states and 817 transitions. Second operand has 166 states, 166 states have (on average 4.885542168674699) internal successors, (811), 165 states have internal predecessors, (811), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:05:55,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:05:55,333 INFO L93 Difference]: Finished difference Result 831 states and 833 transitions. [2022-01-31 23:05:55,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 166 states. [2022-01-31 23:05:55,333 INFO L78 Accepts]: Start accepts. Automaton has has 166 states, 166 states have (on average 4.885542168674699) internal successors, (811), 165 states have internal predecessors, (811), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 814 [2022-01-31 23:05:55,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:05:55,334 INFO L225 Difference]: With dead ends: 831 [2022-01-31 23:05:55,334 INFO L226 Difference]: Without dead ends: 824 [2022-01-31 23:05:55,336 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=13532, Invalid=13858, Unknown=0, NotChecked=0, Total=27390 [2022-01-31 23:05:55,336 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 600 mSDsluCounter, 571 mSDsCounter, 0 mSdLazyCounter, 420 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 600 SdHoareTripleChecker+Valid, 606 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 23:05:55,336 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [600 Valid, 606 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 420 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 23:05:55,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 824 states. [2022-01-31 23:05:57,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 824 to 821. [2022-01-31 23:05:57,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 821 states, 817 states have (on average 1.0024479804161566) internal successors, (819), 817 states have internal predecessors, (819), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:05:57,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 822 transitions. [2022-01-31 23:05:57,052 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 822 transitions. Word has length 814 [2022-01-31 23:05:57,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:05:57,053 INFO L470 AbstractCegarLoop]: Abstraction has 821 states and 822 transitions. [2022-01-31 23:05:57,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 166 states, 166 states have (on average 4.885542168674699) internal successors, (811), 165 states have internal predecessors, (811), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:05:57,053 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 822 transitions. [2022-01-31 23:05:57,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 820 [2022-01-31 23:05:57,057 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:05:57,057 INFO L514 BasicCegarLoop]: trace histogram [155, 154, 154, 154, 154, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:05:57,057 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2022-01-31 23:05:57,057 INFO L402 AbstractCegarLoop]: === Iteration 158 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:05:57,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:05:57,058 INFO L85 PathProgramCache]: Analyzing trace with hash 355808401, now seen corresponding path program 154 times [2022-01-31 23:05:57,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:05:57,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2001373951] [2022-01-31 23:05:57,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:05:57,060 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 23:05:57,060 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 23:05:57,060 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:05:57,073 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:05:57,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:06:02,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:06:02,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:06:02,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 23:06:02,467 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:06:02,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2001373951] [2022-01-31 23:06:02,467 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2001373951] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:06:02,467 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:06:02,467 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [167] imperfect sequences [] total 167 [2022-01-31 23:06:02,467 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229017350] [2022-01-31 23:06:02,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:06:02,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 167 states [2022-01-31 23:06:02,468 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:06:02,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 167 interpolants. [2022-01-31 23:06:02,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13697, Invalid=14025, Unknown=0, NotChecked=0, Total=27722 [2022-01-31 23:06:02,474 INFO L87 Difference]: Start difference. First operand 821 states and 822 transitions. Second operand has 167 states, 167 states have (on average 4.88622754491018) internal successors, (816), 166 states have internal predecessors, (816), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:06:04,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:06:04,811 INFO L93 Difference]: Finished difference Result 836 states and 838 transitions. [2022-01-31 23:06:04,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 167 states. [2022-01-31 23:06:04,812 INFO L78 Accepts]: Start accepts. Automaton has has 167 states, 167 states have (on average 4.88622754491018) internal successors, (816), 166 states have internal predecessors, (816), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 819 [2022-01-31 23:06:04,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:06:04,813 INFO L225 Difference]: With dead ends: 836 [2022-01-31 23:06:04,813 INFO L226 Difference]: Without dead ends: 829 [2022-01-31 23:06:04,814 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=13697, Invalid=14025, Unknown=0, NotChecked=0, Total=27722 [2022-01-31 23:06:04,814 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 549 mSDsluCounter, 620 mSDsCounter, 0 mSdLazyCounter, 435 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 549 SdHoareTripleChecker+Valid, 655 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 23:06:04,814 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [549 Valid, 655 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 435 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 23:06:04,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 829 states. [2022-01-31 23:06:06,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 829 to 826. [2022-01-31 23:06:06,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 826 states, 822 states have (on average 1.002433090024331) internal successors, (824), 822 states have internal predecessors, (824), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:06:06,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 826 states to 826 states and 827 transitions. [2022-01-31 23:06:06,548 INFO L78 Accepts]: Start accepts. Automaton has 826 states and 827 transitions. Word has length 819 [2022-01-31 23:06:06,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:06:06,549 INFO L470 AbstractCegarLoop]: Abstraction has 826 states and 827 transitions. [2022-01-31 23:06:06,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 167 states, 167 states have (on average 4.88622754491018) internal successors, (816), 166 states have internal predecessors, (816), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:06:06,549 INFO L276 IsEmpty]: Start isEmpty. Operand 826 states and 827 transitions. [2022-01-31 23:06:06,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 825 [2022-01-31 23:06:06,553 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:06:06,553 INFO L514 BasicCegarLoop]: trace histogram [156, 155, 155, 155, 155, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:06:06,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2022-01-31 23:06:06,553 INFO L402 AbstractCegarLoop]: === Iteration 159 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:06:06,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:06:06,554 INFO L85 PathProgramCache]: Analyzing trace with hash 22859798, now seen corresponding path program 155 times [2022-01-31 23:06:06,554 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:06:06,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [886508161] [2022-01-31 23:06:06,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:06:06,557 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 23:06:06,557 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 23:06:06,557 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:06:06,569 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:06:06,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:06:15,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:06:15,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:06:15,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 23:06:15,104 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:06:15,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [886508161] [2022-01-31 23:06:15,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [886508161] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:06:15,104 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:06:15,105 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [168] imperfect sequences [] total 168 [2022-01-31 23:06:15,105 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678765502] [2022-01-31 23:06:15,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:06:15,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 168 states [2022-01-31 23:06:15,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:06:15,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 168 interpolants. [2022-01-31 23:06:15,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13863, Invalid=14193, Unknown=0, NotChecked=0, Total=28056 [2022-01-31 23:06:15,110 INFO L87 Difference]: Start difference. First operand 826 states and 827 transitions. Second operand has 168 states, 168 states have (on average 4.886904761904762) internal successors, (821), 167 states have internal predecessors, (821), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:06:17,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:06:17,591 INFO L93 Difference]: Finished difference Result 841 states and 843 transitions. [2022-01-31 23:06:17,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 168 states. [2022-01-31 23:06:17,592 INFO L78 Accepts]: Start accepts. Automaton has has 168 states, 168 states have (on average 4.886904761904762) internal successors, (821), 167 states have internal predecessors, (821), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 824 [2022-01-31 23:06:17,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:06:17,593 INFO L225 Difference]: With dead ends: 841 [2022-01-31 23:06:17,593 INFO L226 Difference]: Without dead ends: 834 [2022-01-31 23:06:17,594 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=13863, Invalid=14193, Unknown=0, NotChecked=0, Total=28056 [2022-01-31 23:06:17,594 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 591 mSDsluCounter, 591 mSDsCounter, 0 mSdLazyCounter, 427 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 591 SdHoareTripleChecker+Valid, 626 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 23:06:17,594 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [591 Valid, 626 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 427 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 23:06:17,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 834 states. [2022-01-31 23:06:19,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 834 to 831. [2022-01-31 23:06:19,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 831 states, 827 states have (on average 1.0024183796856105) internal successors, (829), 827 states have internal predecessors, (829), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:06:19,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 831 states to 831 states and 832 transitions. [2022-01-31 23:06:19,344 INFO L78 Accepts]: Start accepts. Automaton has 831 states and 832 transitions. Word has length 824 [2022-01-31 23:06:19,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:06:19,345 INFO L470 AbstractCegarLoop]: Abstraction has 831 states and 832 transitions. [2022-01-31 23:06:19,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 168 states, 168 states have (on average 4.886904761904762) internal successors, (821), 167 states have internal predecessors, (821), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:06:19,345 INFO L276 IsEmpty]: Start isEmpty. Operand 831 states and 832 transitions. [2022-01-31 23:06:19,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 830 [2022-01-31 23:06:19,349 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:06:19,349 INFO L514 BasicCegarLoop]: trace histogram [157, 156, 156, 156, 156, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:06:19,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2022-01-31 23:06:19,350 INFO L402 AbstractCegarLoop]: === Iteration 160 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:06:19,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:06:19,350 INFO L85 PathProgramCache]: Analyzing trace with hash -139288655, now seen corresponding path program 156 times [2022-01-31 23:06:19,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:06:19,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [700154346] [2022-01-31 23:06:19,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:06:19,353 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 23:06:19,353 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 23:06:19,353 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:06:19,365 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:06:19,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:06:26,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:06:26,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:06:26,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 23:06:26,045 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:06:26,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [700154346] [2022-01-31 23:06:26,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [700154346] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:06:26,046 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:06:26,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [169] imperfect sequences [] total 169 [2022-01-31 23:06:26,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092055929] [2022-01-31 23:06:26,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:06:26,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 169 states [2022-01-31 23:06:26,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:06:26,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 169 interpolants. [2022-01-31 23:06:26,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14030, Invalid=14362, Unknown=0, NotChecked=0, Total=28392 [2022-01-31 23:06:26,050 INFO L87 Difference]: Start difference. First operand 831 states and 832 transitions. Second operand has 169 states, 169 states have (on average 4.887573964497041) internal successors, (826), 168 states have internal predecessors, (826), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:06:28,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:06:28,361 INFO L93 Difference]: Finished difference Result 846 states and 848 transitions. [2022-01-31 23:06:28,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 169 states. [2022-01-31 23:06:28,361 INFO L78 Accepts]: Start accepts. Automaton has has 169 states, 169 states have (on average 4.887573964497041) internal successors, (826), 168 states have internal predecessors, (826), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 829 [2022-01-31 23:06:28,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:06:28,362 INFO L225 Difference]: With dead ends: 846 [2022-01-31 23:06:28,362 INFO L226 Difference]: Without dead ends: 839 [2022-01-31 23:06:28,363 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=14030, Invalid=14362, Unknown=0, NotChecked=0, Total=28392 [2022-01-31 23:06:28,364 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 693 mSDsluCounter, 584 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 693 SdHoareTripleChecker+Valid, 619 SdHoareTripleChecker+Invalid, 512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 23:06:28,364 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [693 Valid, 619 Invalid, 512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 430 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 23:06:28,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 839 states. [2022-01-31 23:06:30,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 839 to 836. [2022-01-31 23:06:30,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 836 states, 832 states have (on average 1.0024038461538463) internal successors, (834), 832 states have internal predecessors, (834), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:06:30,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 836 states to 836 states and 837 transitions. [2022-01-31 23:06:30,089 INFO L78 Accepts]: Start accepts. Automaton has 836 states and 837 transitions. Word has length 829 [2022-01-31 23:06:30,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:06:30,090 INFO L470 AbstractCegarLoop]: Abstraction has 836 states and 837 transitions. [2022-01-31 23:06:30,090 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 169 states, 169 states have (on average 4.887573964497041) internal successors, (826), 168 states have internal predecessors, (826), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:06:30,090 INFO L276 IsEmpty]: Start isEmpty. Operand 836 states and 837 transitions. [2022-01-31 23:06:30,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 835 [2022-01-31 23:06:30,094 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:06:30,094 INFO L514 BasicCegarLoop]: trace histogram [158, 157, 157, 157, 157, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:06:30,094 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2022-01-31 23:06:30,095 INFO L402 AbstractCegarLoop]: === Iteration 161 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:06:30,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:06:30,095 INFO L85 PathProgramCache]: Analyzing trace with hash -232433418, now seen corresponding path program 157 times [2022-01-31 23:06:30,095 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:06:30,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [685855936] [2022-01-31 23:06:30,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:06:30,097 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 23:06:30,097 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 23:06:30,097 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:06:30,109 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:06:30,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:06:37,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:06:37,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:06:37,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 23:06:37,422 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:06:37,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [685855936] [2022-01-31 23:06:37,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [685855936] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:06:37,422 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:06:37,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [170] imperfect sequences [] total 170 [2022-01-31 23:06:37,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407787423] [2022-01-31 23:06:37,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:06:37,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 170 states [2022-01-31 23:06:37,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:06:37,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 170 interpolants. [2022-01-31 23:06:37,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14198, Invalid=14532, Unknown=0, NotChecked=0, Total=28730 [2022-01-31 23:06:37,426 INFO L87 Difference]: Start difference. First operand 836 states and 837 transitions. Second operand has 170 states, 170 states have (on average 4.8882352941176475) internal successors, (831), 169 states have internal predecessors, (831), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:06:39,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:06:39,853 INFO L93 Difference]: Finished difference Result 851 states and 853 transitions. [2022-01-31 23:06:39,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 170 states. [2022-01-31 23:06:39,853 INFO L78 Accepts]: Start accepts. Automaton has has 170 states, 170 states have (on average 4.8882352941176475) internal successors, (831), 169 states have internal predecessors, (831), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 834 [2022-01-31 23:06:39,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:06:39,854 INFO L225 Difference]: With dead ends: 851 [2022-01-31 23:06:39,854 INFO L226 Difference]: Without dead ends: 844 [2022-01-31 23:06:39,855 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=14198, Invalid=14532, Unknown=0, NotChecked=0, Total=28730 [2022-01-31 23:06:39,855 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 582 mSDsluCounter, 559 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 582 SdHoareTripleChecker+Valid, 594 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 23:06:39,856 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [582 Valid, 594 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 23:06:39,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 844 states. [2022-01-31 23:06:41,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 844 to 841. [2022-01-31 23:06:41,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 841 states, 837 states have (on average 1.002389486260454) internal successors, (839), 837 states have internal predecessors, (839), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:06:41,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 841 states to 841 states and 842 transitions. [2022-01-31 23:06:41,654 INFO L78 Accepts]: Start accepts. Automaton has 841 states and 842 transitions. Word has length 834 [2022-01-31 23:06:41,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:06:41,655 INFO L470 AbstractCegarLoop]: Abstraction has 841 states and 842 transitions. [2022-01-31 23:06:41,655 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 170 states, 170 states have (on average 4.8882352941176475) internal successors, (831), 169 states have internal predecessors, (831), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:06:41,655 INFO L276 IsEmpty]: Start isEmpty. Operand 841 states and 842 transitions. [2022-01-31 23:06:41,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 840 [2022-01-31 23:06:41,659 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:06:41,659 INFO L514 BasicCegarLoop]: trace histogram [159, 158, 158, 158, 158, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:06:41,660 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2022-01-31 23:06:41,660 INFO L402 AbstractCegarLoop]: === Iteration 162 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:06:41,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:06:41,660 INFO L85 PathProgramCache]: Analyzing trace with hash -717446447, now seen corresponding path program 158 times [2022-01-31 23:06:41,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:06:41,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1397331630] [2022-01-31 23:06:41,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:06:41,663 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 23:06:41,663 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 23:06:41,663 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:06:41,676 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:06:41,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:06:47,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:06:47,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:06:47,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 23:06:47,382 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:06:47,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1397331630] [2022-01-31 23:06:47,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1397331630] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:06:47,382 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:06:47,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [171] imperfect sequences [] total 171 [2022-01-31 23:06:47,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881042172] [2022-01-31 23:06:47,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:06:47,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 171 states [2022-01-31 23:06:47,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:06:47,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 171 interpolants. [2022-01-31 23:06:47,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14367, Invalid=14703, Unknown=0, NotChecked=0, Total=29070 [2022-01-31 23:06:47,387 INFO L87 Difference]: Start difference. First operand 841 states and 842 transitions. Second operand has 171 states, 171 states have (on average 4.888888888888889) internal successors, (836), 170 states have internal predecessors, (836), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:06:49,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:06:49,794 INFO L93 Difference]: Finished difference Result 856 states and 858 transitions. [2022-01-31 23:06:49,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 171 states. [2022-01-31 23:06:49,795 INFO L78 Accepts]: Start accepts. Automaton has has 171 states, 171 states have (on average 4.888888888888889) internal successors, (836), 170 states have internal predecessors, (836), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 839 [2022-01-31 23:06:49,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:06:49,796 INFO L225 Difference]: With dead ends: 856 [2022-01-31 23:06:49,796 INFO L226 Difference]: Without dead ends: 849 [2022-01-31 23:06:49,797 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=14367, Invalid=14703, Unknown=0, NotChecked=0, Total=29070 [2022-01-31 23:06:49,797 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 621 mSDsluCounter, 584 mSDsCounter, 0 mSdLazyCounter, 427 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 621 SdHoareTripleChecker+Valid, 619 SdHoareTripleChecker+Invalid, 480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 23:06:49,797 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [621 Valid, 619 Invalid, 480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 427 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 23:06:49,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 849 states. [2022-01-31 23:06:51,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 849 to 846. [2022-01-31 23:06:51,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 846 states, 842 states have (on average 1.002375296912114) internal successors, (844), 842 states have internal predecessors, (844), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:06:51,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 846 states to 846 states and 847 transitions. [2022-01-31 23:06:51,581 INFO L78 Accepts]: Start accepts. Automaton has 846 states and 847 transitions. Word has length 839 [2022-01-31 23:06:51,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:06:51,581 INFO L470 AbstractCegarLoop]: Abstraction has 846 states and 847 transitions. [2022-01-31 23:06:51,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 171 states, 171 states have (on average 4.888888888888889) internal successors, (836), 170 states have internal predecessors, (836), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:06:51,582 INFO L276 IsEmpty]: Start isEmpty. Operand 846 states and 847 transitions. [2022-01-31 23:06:51,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 845 [2022-01-31 23:06:51,586 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:06:51,586 INFO L514 BasicCegarLoop]: trace histogram [160, 159, 159, 159, 159, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:06:51,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2022-01-31 23:06:51,586 INFO L402 AbstractCegarLoop]: === Iteration 163 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:06:51,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:06:51,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1342196182, now seen corresponding path program 159 times [2022-01-31 23:06:51,586 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:06:51,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1433299289] [2022-01-31 23:06:51,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:06:51,589 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 23:06:51,589 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 23:06:51,589 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:06:51,602 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:06:51,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:06:58,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:06:58,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:06:58,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 23:06:58,473 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:06:58,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1433299289] [2022-01-31 23:06:58,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1433299289] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:06:58,473 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:06:58,473 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [172] imperfect sequences [] total 172 [2022-01-31 23:06:58,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523476125] [2022-01-31 23:06:58,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:06:58,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 172 states [2022-01-31 23:06:58,474 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:06:58,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 172 interpolants. [2022-01-31 23:06:58,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14537, Invalid=14875, Unknown=0, NotChecked=0, Total=29412 [2022-01-31 23:06:58,478 INFO L87 Difference]: Start difference. First operand 846 states and 847 transitions. Second operand has 172 states, 172 states have (on average 4.8895348837209305) internal successors, (841), 171 states have internal predecessors, (841), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:07:00,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:07:00,941 INFO L93 Difference]: Finished difference Result 861 states and 863 transitions. [2022-01-31 23:07:00,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 172 states. [2022-01-31 23:07:00,941 INFO L78 Accepts]: Start accepts. Automaton has has 172 states, 172 states have (on average 4.8895348837209305) internal successors, (841), 171 states have internal predecessors, (841), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 844 [2022-01-31 23:07:00,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:07:00,942 INFO L225 Difference]: With dead ends: 861 [2022-01-31 23:07:00,943 INFO L226 Difference]: Without dead ends: 854 [2022-01-31 23:07:00,944 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=14537, Invalid=14875, Unknown=0, NotChecked=0, Total=29412 [2022-01-31 23:07:00,944 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 597 mSDsluCounter, 622 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 597 SdHoareTripleChecker+Valid, 657 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 23:07:00,944 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [597 Valid, 657 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 23:07:00,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 854 states. [2022-01-31 23:07:02,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 854 to 851. [2022-01-31 23:07:02,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 851 states, 847 states have (on average 1.0023612750885478) internal successors, (849), 847 states have internal predecessors, (849), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:07:02,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 851 states to 851 states and 852 transitions. [2022-01-31 23:07:02,762 INFO L78 Accepts]: Start accepts. Automaton has 851 states and 852 transitions. Word has length 844 [2022-01-31 23:07:02,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:07:02,763 INFO L470 AbstractCegarLoop]: Abstraction has 851 states and 852 transitions. [2022-01-31 23:07:02,763 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 172 states, 172 states have (on average 4.8895348837209305) internal successors, (841), 171 states have internal predecessors, (841), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:07:02,763 INFO L276 IsEmpty]: Start isEmpty. Operand 851 states and 852 transitions. [2022-01-31 23:07:02,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 850 [2022-01-31 23:07:02,767 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:07:02,767 INFO L514 BasicCegarLoop]: trace histogram [161, 160, 160, 160, 160, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:07:02,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2022-01-31 23:07:02,768 INFO L402 AbstractCegarLoop]: === Iteration 164 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:07:02,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:07:02,768 INFO L85 PathProgramCache]: Analyzing trace with hash 418725361, now seen corresponding path program 160 times [2022-01-31 23:07:02,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:07:02,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2049830858] [2022-01-31 23:07:02,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:07:02,770 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 23:07:02,770 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 23:07:02,770 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:07:02,783 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:07:02,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:07:08,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:07:08,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:07:08,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 23:07:08,676 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:07:08,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2049830858] [2022-01-31 23:07:08,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2049830858] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:07:08,676 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:07:08,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [173] imperfect sequences [] total 173 [2022-01-31 23:07:08,676 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619146883] [2022-01-31 23:07:08,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:07:08,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 173 states [2022-01-31 23:07:08,677 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:07:08,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 173 interpolants. [2022-01-31 23:07:08,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14708, Invalid=15048, Unknown=0, NotChecked=0, Total=29756 [2022-01-31 23:07:08,682 INFO L87 Difference]: Start difference. First operand 851 states and 852 transitions. Second operand has 173 states, 173 states have (on average 4.890173410404624) internal successors, (846), 172 states have internal predecessors, (846), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:07:11,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:07:11,243 INFO L93 Difference]: Finished difference Result 866 states and 868 transitions. [2022-01-31 23:07:11,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 173 states. [2022-01-31 23:07:11,244 INFO L78 Accepts]: Start accepts. Automaton has has 173 states, 173 states have (on average 4.890173410404624) internal successors, (846), 172 states have internal predecessors, (846), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 849 [2022-01-31 23:07:11,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:07:11,245 INFO L225 Difference]: With dead ends: 866 [2022-01-31 23:07:11,245 INFO L226 Difference]: Without dead ends: 859 [2022-01-31 23:07:11,246 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=14708, Invalid=15048, Unknown=0, NotChecked=0, Total=29756 [2022-01-31 23:07:11,246 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 648 mSDsluCounter, 642 mSDsCounter, 0 mSdLazyCounter, 461 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 648 SdHoareTripleChecker+Valid, 677 SdHoareTripleChecker+Invalid, 522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 23:07:11,246 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [648 Valid, 677 Invalid, 522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 461 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 23:07:11,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2022-01-31 23:07:13,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 856. [2022-01-31 23:07:13,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 856 states, 852 states have (on average 1.0023474178403755) internal successors, (854), 852 states have internal predecessors, (854), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:07:13,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 856 states to 856 states and 857 transitions. [2022-01-31 23:07:13,127 INFO L78 Accepts]: Start accepts. Automaton has 856 states and 857 transitions. Word has length 849 [2022-01-31 23:07:13,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:07:13,128 INFO L470 AbstractCegarLoop]: Abstraction has 856 states and 857 transitions. [2022-01-31 23:07:13,128 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 173 states, 173 states have (on average 4.890173410404624) internal successors, (846), 172 states have internal predecessors, (846), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:07:13,128 INFO L276 IsEmpty]: Start isEmpty. Operand 856 states and 857 transitions. [2022-01-31 23:07:13,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 855 [2022-01-31 23:07:13,132 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:07:13,132 INFO L514 BasicCegarLoop]: trace histogram [162, 161, 161, 161, 161, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:07:13,133 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2022-01-31 23:07:13,133 INFO L402 AbstractCegarLoop]: === Iteration 165 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:07:13,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:07:13,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1426825910, now seen corresponding path program 161 times [2022-01-31 23:07:13,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:07:13,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [583124121] [2022-01-31 23:07:13,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:07:13,156 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 23:07:13,156 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 23:07:13,156 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:07:13,169 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:07:13,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:07:19,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:07:19,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:07:19,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 23:07:19,551 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:07:19,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [583124121] [2022-01-31 23:07:19,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [583124121] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:07:19,551 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:07:19,551 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [174] imperfect sequences [] total 174 [2022-01-31 23:07:19,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498899514] [2022-01-31 23:07:19,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:07:19,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 174 states [2022-01-31 23:07:19,551 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:07:19,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 174 interpolants. [2022-01-31 23:07:19,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14880, Invalid=15222, Unknown=0, NotChecked=0, Total=30102 [2022-01-31 23:07:19,557 INFO L87 Difference]: Start difference. First operand 856 states and 857 transitions. Second operand has 174 states, 174 states have (on average 4.890804597701149) internal successors, (851), 173 states have internal predecessors, (851), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:07:22,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:07:22,129 INFO L93 Difference]: Finished difference Result 871 states and 873 transitions. [2022-01-31 23:07:22,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 174 states. [2022-01-31 23:07:22,129 INFO L78 Accepts]: Start accepts. Automaton has has 174 states, 174 states have (on average 4.890804597701149) internal successors, (851), 173 states have internal predecessors, (851), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 854 [2022-01-31 23:07:22,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:07:22,130 INFO L225 Difference]: With dead ends: 871 [2022-01-31 23:07:22,130 INFO L226 Difference]: Without dead ends: 864 [2022-01-31 23:07:22,131 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=14880, Invalid=15222, Unknown=0, NotChecked=0, Total=30102 [2022-01-31 23:07:22,131 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 564 mSDsluCounter, 618 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 564 SdHoareTripleChecker+Valid, 653 SdHoareTripleChecker+Invalid, 465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 23:07:22,131 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [564 Valid, 653 Invalid, 465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 437 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 23:07:22,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 864 states. [2022-01-31 23:07:23,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 864 to 861. [2022-01-31 23:07:23,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 861 states, 857 states have (on average 1.0023337222870479) internal successors, (859), 857 states have internal predecessors, (859), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:07:23,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 861 states to 861 states and 862 transitions. [2022-01-31 23:07:23,997 INFO L78 Accepts]: Start accepts. Automaton has 861 states and 862 transitions. Word has length 854 [2022-01-31 23:07:23,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:07:23,998 INFO L470 AbstractCegarLoop]: Abstraction has 861 states and 862 transitions. [2022-01-31 23:07:23,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 174 states, 174 states have (on average 4.890804597701149) internal successors, (851), 173 states have internal predecessors, (851), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:07:23,998 INFO L276 IsEmpty]: Start isEmpty. Operand 861 states and 862 transitions. [2022-01-31 23:07:24,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 860 [2022-01-31 23:07:24,002 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:07:24,002 INFO L514 BasicCegarLoop]: trace histogram [163, 162, 162, 162, 162, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:07:24,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2022-01-31 23:07:24,003 INFO L402 AbstractCegarLoop]: === Iteration 166 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:07:24,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:07:24,003 INFO L85 PathProgramCache]: Analyzing trace with hash 729706769, now seen corresponding path program 162 times [2022-01-31 23:07:24,003 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:07:24,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1465894437] [2022-01-31 23:07:24,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:07:24,005 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 23:07:24,005 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 23:07:24,005 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:07:24,018 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:07:24,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:07:30,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:07:30,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:07:30,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 23:07:30,707 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:07:30,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1465894437] [2022-01-31 23:07:30,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1465894437] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:07:30,707 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:07:30,707 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [175] imperfect sequences [] total 175 [2022-01-31 23:07:30,707 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392933964] [2022-01-31 23:07:30,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:07:30,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 175 states [2022-01-31 23:07:30,708 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:07:30,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 175 interpolants. [2022-01-31 23:07:30,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15053, Invalid=15397, Unknown=0, NotChecked=0, Total=30450 [2022-01-31 23:07:30,712 INFO L87 Difference]: Start difference. First operand 861 states and 862 transitions. Second operand has 175 states, 175 states have (on average 4.8914285714285715) internal successors, (856), 174 states have internal predecessors, (856), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:07:33,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:07:33,279 INFO L93 Difference]: Finished difference Result 876 states and 878 transitions. [2022-01-31 23:07:33,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 175 states. [2022-01-31 23:07:33,279 INFO L78 Accepts]: Start accepts. Automaton has has 175 states, 175 states have (on average 4.8914285714285715) internal successors, (856), 174 states have internal predecessors, (856), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 859 [2022-01-31 23:07:33,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:07:33,280 INFO L225 Difference]: With dead ends: 876 [2022-01-31 23:07:33,280 INFO L226 Difference]: Without dead ends: 869 [2022-01-31 23:07:33,281 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=15053, Invalid=15397, Unknown=0, NotChecked=0, Total=30450 [2022-01-31 23:07:33,282 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 642 mSDsluCounter, 586 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 642 SdHoareTripleChecker+Valid, 621 SdHoareTripleChecker+Invalid, 496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 23:07:33,282 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [642 Valid, 621 Invalid, 496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 437 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 23:07:33,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 869 states. [2022-01-31 23:07:35,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 869 to 866. [2022-01-31 23:07:35,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 866 states, 862 states have (on average 1.0023201856148491) internal successors, (864), 862 states have internal predecessors, (864), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:07:35,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 866 states to 866 states and 867 transitions. [2022-01-31 23:07:35,203 INFO L78 Accepts]: Start accepts. Automaton has 866 states and 867 transitions. Word has length 859 [2022-01-31 23:07:35,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:07:35,203 INFO L470 AbstractCegarLoop]: Abstraction has 866 states and 867 transitions. [2022-01-31 23:07:35,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 175 states, 175 states have (on average 4.8914285714285715) internal successors, (856), 174 states have internal predecessors, (856), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:07:35,203 INFO L276 IsEmpty]: Start isEmpty. Operand 866 states and 867 transitions. [2022-01-31 23:07:35,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 865 [2022-01-31 23:07:35,208 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:07:35,208 INFO L514 BasicCegarLoop]: trace histogram [164, 163, 163, 163, 163, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:07:35,208 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2022-01-31 23:07:35,208 INFO L402 AbstractCegarLoop]: === Iteration 167 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:07:35,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:07:35,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1377475690, now seen corresponding path program 163 times [2022-01-31 23:07:35,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:07:35,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1424613214] [2022-01-31 23:07:35,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:07:35,210 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 23:07:35,210 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 23:07:35,210 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:07:35,223 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:07:35,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:07:44,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:07:44,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:07:44,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 23:07:44,035 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:07:44,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1424613214] [2022-01-31 23:07:44,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1424613214] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:07:44,035 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:07:44,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [176] imperfect sequences [] total 176 [2022-01-31 23:07:44,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374195034] [2022-01-31 23:07:44,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:07:44,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 176 states [2022-01-31 23:07:44,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:07:44,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 176 interpolants. [2022-01-31 23:07:44,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15227, Invalid=15573, Unknown=0, NotChecked=0, Total=30800 [2022-01-31 23:07:44,042 INFO L87 Difference]: Start difference. First operand 866 states and 867 transitions. Second operand has 176 states, 176 states have (on average 4.892045454545454) internal successors, (861), 175 states have internal predecessors, (861), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:07:46,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:07:46,731 INFO L93 Difference]: Finished difference Result 881 states and 883 transitions. [2022-01-31 23:07:46,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 176 states. [2022-01-31 23:07:46,731 INFO L78 Accepts]: Start accepts. Automaton has has 176 states, 176 states have (on average 4.892045454545454) internal successors, (861), 175 states have internal predecessors, (861), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 864 [2022-01-31 23:07:46,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:07:46,733 INFO L225 Difference]: With dead ends: 881 [2022-01-31 23:07:46,733 INFO L226 Difference]: Without dead ends: 874 [2022-01-31 23:07:46,734 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=15227, Invalid=15573, Unknown=0, NotChecked=0, Total=30800 [2022-01-31 23:07:46,734 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 633 mSDsluCounter, 600 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 633 SdHoareTripleChecker+Valid, 635 SdHoareTripleChecker+Invalid, 503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 23:07:46,734 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [633 Valid, 635 Invalid, 503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 449 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 23:07:46,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 874 states. [2022-01-31 23:07:48,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 874 to 871. [2022-01-31 23:07:48,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 871 states, 867 states have (on average 1.0023068050749713) internal successors, (869), 867 states have internal predecessors, (869), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:07:48,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 871 states to 871 states and 872 transitions. [2022-01-31 23:07:48,678 INFO L78 Accepts]: Start accepts. Automaton has 871 states and 872 transitions. Word has length 864 [2022-01-31 23:07:48,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:07:48,678 INFO L470 AbstractCegarLoop]: Abstraction has 871 states and 872 transitions. [2022-01-31 23:07:48,678 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 176 states, 176 states have (on average 4.892045454545454) internal successors, (861), 175 states have internal predecessors, (861), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:07:48,678 INFO L276 IsEmpty]: Start isEmpty. Operand 871 states and 872 transitions. [2022-01-31 23:07:48,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 870 [2022-01-31 23:07:48,683 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:07:48,683 INFO L514 BasicCegarLoop]: trace histogram [165, 164, 164, 164, 164, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:07:48,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2022-01-31 23:07:48,683 INFO L402 AbstractCegarLoop]: === Iteration 168 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:07:48,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:07:48,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1829094351, now seen corresponding path program 164 times [2022-01-31 23:07:48,683 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:07:48,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1142886663] [2022-01-31 23:07:48,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:07:48,685 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 23:07:48,685 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 23:07:48,685 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:07:48,709 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:07:48,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:07:54,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:07:54,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:07:54,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 23:07:54,666 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:07:54,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1142886663] [2022-01-31 23:07:54,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1142886663] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:07:54,666 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:07:54,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [177] imperfect sequences [] total 177 [2022-01-31 23:07:54,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132879818] [2022-01-31 23:07:54,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:07:54,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 177 states [2022-01-31 23:07:54,667 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:07:54,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 177 interpolants. [2022-01-31 23:07:54,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15402, Invalid=15750, Unknown=0, NotChecked=0, Total=31152 [2022-01-31 23:07:54,672 INFO L87 Difference]: Start difference. First operand 871 states and 872 transitions. Second operand has 177 states, 177 states have (on average 4.892655367231638) internal successors, (866), 176 states have internal predecessors, (866), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:07:57,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:07:57,400 INFO L93 Difference]: Finished difference Result 886 states and 888 transitions. [2022-01-31 23:07:57,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 177 states. [2022-01-31 23:07:57,401 INFO L78 Accepts]: Start accepts. Automaton has has 177 states, 177 states have (on average 4.892655367231638) internal successors, (866), 176 states have internal predecessors, (866), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 869 [2022-01-31 23:07:57,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:07:57,402 INFO L225 Difference]: With dead ends: 886 [2022-01-31 23:07:57,402 INFO L226 Difference]: Without dead ends: 879 [2022-01-31 23:07:57,403 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=15402, Invalid=15750, Unknown=0, NotChecked=0, Total=31152 [2022-01-31 23:07:57,403 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 651 mSDsluCounter, 577 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 651 SdHoareTripleChecker+Valid, 612 SdHoareTripleChecker+Invalid, 498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 23:07:57,403 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [651 Valid, 612 Invalid, 498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 437 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 23:07:57,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 879 states. [2022-01-31 23:07:59,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 879 to 876. [2022-01-31 23:07:59,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 876 states, 872 states have (on average 1.0022935779816513) internal successors, (874), 872 states have internal predecessors, (874), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:07:59,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 876 states to 876 states and 877 transitions. [2022-01-31 23:07:59,397 INFO L78 Accepts]: Start accepts. Automaton has 876 states and 877 transitions. Word has length 869 [2022-01-31 23:07:59,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:07:59,397 INFO L470 AbstractCegarLoop]: Abstraction has 876 states and 877 transitions. [2022-01-31 23:07:59,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 177 states, 177 states have (on average 4.892655367231638) internal successors, (866), 176 states have internal predecessors, (866), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:07:59,398 INFO L276 IsEmpty]: Start isEmpty. Operand 876 states and 877 transitions. [2022-01-31 23:07:59,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 875 [2022-01-31 23:07:59,402 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:07:59,402 INFO L514 BasicCegarLoop]: trace histogram [166, 165, 165, 165, 165, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:07:59,402 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2022-01-31 23:07:59,402 INFO L402 AbstractCegarLoop]: === Iteration 169 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:07:59,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:07:59,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1504414838, now seen corresponding path program 165 times [2022-01-31 23:07:59,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:07:59,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1486071622] [2022-01-31 23:07:59,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:07:59,404 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 23:07:59,405 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 23:07:59,405 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:07:59,417 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:07:59,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:08:05,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:08:05,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:08:05,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 23:08:05,662 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:08:05,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1486071622] [2022-01-31 23:08:05,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1486071622] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:08:05,662 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:08:05,662 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [178] imperfect sequences [] total 178 [2022-01-31 23:08:05,662 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578384436] [2022-01-31 23:08:05,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:08:05,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 178 states [2022-01-31 23:08:05,663 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:08:05,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 178 interpolants. [2022-01-31 23:08:05,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15578, Invalid=15928, Unknown=0, NotChecked=0, Total=31506 [2022-01-31 23:08:05,667 INFO L87 Difference]: Start difference. First operand 876 states and 877 transitions. Second operand has 178 states, 178 states have (on average 4.893258426966292) internal successors, (871), 177 states have internal predecessors, (871), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:08:08,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:08:08,381 INFO L93 Difference]: Finished difference Result 891 states and 893 transitions. [2022-01-31 23:08:08,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 178 states. [2022-01-31 23:08:08,382 INFO L78 Accepts]: Start accepts. Automaton has has 178 states, 178 states have (on average 4.893258426966292) internal successors, (871), 177 states have internal predecessors, (871), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 874 [2022-01-31 23:08:08,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:08:08,383 INFO L225 Difference]: With dead ends: 891 [2022-01-31 23:08:08,383 INFO L226 Difference]: Without dead ends: 884 [2022-01-31 23:08:08,384 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=15578, Invalid=15928, Unknown=0, NotChecked=0, Total=31506 [2022-01-31 23:08:08,384 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 627 mSDsluCounter, 604 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 627 SdHoareTripleChecker+Valid, 639 SdHoareTripleChecker+Invalid, 490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 23:08:08,384 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [627 Valid, 639 Invalid, 490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 23:08:08,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 884 states. [2022-01-31 23:08:10,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 884 to 881. [2022-01-31 23:08:10,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 881 states, 877 states have (on average 1.0022805017103762) internal successors, (879), 877 states have internal predecessors, (879), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:08:10,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 881 states to 881 states and 882 transitions. [2022-01-31 23:08:10,394 INFO L78 Accepts]: Start accepts. Automaton has 881 states and 882 transitions. Word has length 874 [2022-01-31 23:08:10,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:08:10,394 INFO L470 AbstractCegarLoop]: Abstraction has 881 states and 882 transitions. [2022-01-31 23:08:10,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 178 states, 178 states have (on average 4.893258426966292) internal successors, (871), 177 states have internal predecessors, (871), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:08:10,395 INFO L276 IsEmpty]: Start isEmpty. Operand 881 states and 882 transitions. [2022-01-31 23:08:10,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 880 [2022-01-31 23:08:10,399 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:08:10,399 INFO L514 BasicCegarLoop]: trace histogram [167, 166, 166, 166, 166, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:08:10,400 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2022-01-31 23:08:10,400 INFO L402 AbstractCegarLoop]: === Iteration 170 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:08:10,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:08:10,400 INFO L85 PathProgramCache]: Analyzing trace with hash 319463249, now seen corresponding path program 166 times [2022-01-31 23:08:10,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:08:10,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1842919967] [2022-01-31 23:08:10,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:08:10,402 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 23:08:10,402 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 23:08:10,402 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:08:10,415 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:08:10,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:08:16,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:08:16,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:08:16,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 23:08:16,306 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:08:16,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1842919967] [2022-01-31 23:08:16,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1842919967] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:08:16,306 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:08:16,306 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [179] imperfect sequences [] total 179 [2022-01-31 23:08:16,306 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512143657] [2022-01-31 23:08:16,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:08:16,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 179 states [2022-01-31 23:08:16,307 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:08:16,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 179 interpolants. [2022-01-31 23:08:16,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15755, Invalid=16107, Unknown=0, NotChecked=0, Total=31862 [2022-01-31 23:08:16,311 INFO L87 Difference]: Start difference. First operand 881 states and 882 transitions. Second operand has 179 states, 179 states have (on average 4.893854748603352) internal successors, (876), 178 states have internal predecessors, (876), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:08:19,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:08:19,056 INFO L93 Difference]: Finished difference Result 896 states and 898 transitions. [2022-01-31 23:08:19,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 179 states. [2022-01-31 23:08:19,057 INFO L78 Accepts]: Start accepts. Automaton has has 179 states, 179 states have (on average 4.893854748603352) internal successors, (876), 178 states have internal predecessors, (876), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 879 [2022-01-31 23:08:19,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:08:19,058 INFO L225 Difference]: With dead ends: 896 [2022-01-31 23:08:19,058 INFO L226 Difference]: Without dead ends: 889 [2022-01-31 23:08:19,059 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=15755, Invalid=16107, Unknown=0, NotChecked=0, Total=31862 [2022-01-31 23:08:19,059 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 648 mSDsluCounter, 618 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 648 SdHoareTripleChecker+Valid, 653 SdHoareTripleChecker+Invalid, 495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 23:08:19,059 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [648 Valid, 653 Invalid, 495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 23:08:19,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 889 states. [2022-01-31 23:08:21,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 889 to 886. [2022-01-31 23:08:21,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 886 states, 882 states have (on average 1.002267573696145) internal successors, (884), 882 states have internal predecessors, (884), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:08:21,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 886 states to 886 states and 887 transitions. [2022-01-31 23:08:21,153 INFO L78 Accepts]: Start accepts. Automaton has 886 states and 887 transitions. Word has length 879 [2022-01-31 23:08:21,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:08:21,153 INFO L470 AbstractCegarLoop]: Abstraction has 886 states and 887 transitions. [2022-01-31 23:08:21,153 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 179 states, 179 states have (on average 4.893854748603352) internal successors, (876), 178 states have internal predecessors, (876), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:08:21,153 INFO L276 IsEmpty]: Start isEmpty. Operand 886 states and 887 transitions. [2022-01-31 23:08:21,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 885 [2022-01-31 23:08:21,158 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:08:21,171 INFO L514 BasicCegarLoop]: trace histogram [168, 167, 167, 167, 167, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:08:21,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2022-01-31 23:08:21,171 INFO L402 AbstractCegarLoop]: === Iteration 171 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:08:21,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:08:21,172 INFO L85 PathProgramCache]: Analyzing trace with hash -1979966122, now seen corresponding path program 167 times [2022-01-31 23:08:21,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:08:21,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1102300870] [2022-01-31 23:08:21,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:08:21,189 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 23:08:21,189 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 23:08:21,189 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:08:21,202 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:08:21,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:08:27,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:08:27,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:08:27,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 23:08:27,992 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:08:27,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1102300870] [2022-01-31 23:08:27,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1102300870] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:08:27,992 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:08:27,992 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [180] imperfect sequences [] total 180 [2022-01-31 23:08:27,992 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988573813] [2022-01-31 23:08:27,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:08:27,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 180 states [2022-01-31 23:08:27,993 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:08:27,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 180 interpolants. [2022-01-31 23:08:27,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15933, Invalid=16287, Unknown=0, NotChecked=0, Total=32220 [2022-01-31 23:08:27,998 INFO L87 Difference]: Start difference. First operand 886 states and 887 transitions. Second operand has 180 states, 180 states have (on average 4.894444444444445) internal successors, (881), 179 states have internal predecessors, (881), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:08:30,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:08:30,858 INFO L93 Difference]: Finished difference Result 901 states and 903 transitions. [2022-01-31 23:08:30,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 180 states. [2022-01-31 23:08:30,858 INFO L78 Accepts]: Start accepts. Automaton has has 180 states, 180 states have (on average 4.894444444444445) internal successors, (881), 179 states have internal predecessors, (881), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 884 [2022-01-31 23:08:30,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:08:30,859 INFO L225 Difference]: With dead ends: 901 [2022-01-31 23:08:30,860 INFO L226 Difference]: Without dead ends: 894 [2022-01-31 23:08:30,861 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=15933, Invalid=16287, Unknown=0, NotChecked=0, Total=32220 [2022-01-31 23:08:30,861 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 627 mSDsluCounter, 618 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 627 SdHoareTripleChecker+Valid, 653 SdHoareTripleChecker+Invalid, 496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 23:08:30,861 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [627 Valid, 653 Invalid, 496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 449 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 23:08:30,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 894 states. [2022-01-31 23:08:32,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 894 to 891. [2022-01-31 23:08:32,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 891 states, 887 states have (on average 1.0022547914317925) internal successors, (889), 887 states have internal predecessors, (889), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:08:32,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 891 states to 891 states and 892 transitions. [2022-01-31 23:08:32,953 INFO L78 Accepts]: Start accepts. Automaton has 891 states and 892 transitions. Word has length 884 [2022-01-31 23:08:32,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:08:32,953 INFO L470 AbstractCegarLoop]: Abstraction has 891 states and 892 transitions. [2022-01-31 23:08:32,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 180 states, 180 states have (on average 4.894444444444445) internal successors, (881), 179 states have internal predecessors, (881), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:08:32,953 INFO L276 IsEmpty]: Start isEmpty. Operand 891 states and 892 transitions. [2022-01-31 23:08:32,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 890 [2022-01-31 23:08:32,958 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:08:32,958 INFO L514 BasicCegarLoop]: trace histogram [169, 168, 168, 168, 168, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:08:32,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2022-01-31 23:08:32,959 INFO L402 AbstractCegarLoop]: === Iteration 172 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:08:32,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:08:32,959 INFO L85 PathProgramCache]: Analyzing trace with hash -858678671, now seen corresponding path program 168 times [2022-01-31 23:08:32,959 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:08:32,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [3527290] [2022-01-31 23:08:32,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:08:32,961 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 23:08:32,961 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 23:08:32,961 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:08:32,974 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:08:33,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:08:39,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:08:39,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:08:39,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 23:08:39,126 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:08:39,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [3527290] [2022-01-31 23:08:39,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [3527290] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:08:39,126 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:08:39,127 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [181] imperfect sequences [] total 181 [2022-01-31 23:08:39,127 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253401273] [2022-01-31 23:08:39,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:08:39,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 181 states [2022-01-31 23:08:39,127 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:08:39,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 181 interpolants. [2022-01-31 23:08:39,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16112, Invalid=16468, Unknown=0, NotChecked=0, Total=32580 [2022-01-31 23:08:39,133 INFO L87 Difference]: Start difference. First operand 891 states and 892 transitions. Second operand has 181 states, 181 states have (on average 4.895027624309392) internal successors, (886), 180 states have internal predecessors, (886), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:08:41,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:08:41,937 INFO L93 Difference]: Finished difference Result 906 states and 908 transitions. [2022-01-31 23:08:41,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 181 states. [2022-01-31 23:08:41,938 INFO L78 Accepts]: Start accepts. Automaton has has 181 states, 181 states have (on average 4.895027624309392) internal successors, (886), 180 states have internal predecessors, (886), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 889 [2022-01-31 23:08:41,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:08:41,939 INFO L225 Difference]: With dead ends: 906 [2022-01-31 23:08:41,939 INFO L226 Difference]: Without dead ends: 899 [2022-01-31 23:08:41,940 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=16112, Invalid=16468, Unknown=0, NotChecked=0, Total=32580 [2022-01-31 23:08:41,940 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 639 mSDsluCounter, 631 mSDsCounter, 0 mSdLazyCounter, 454 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 639 SdHoareTripleChecker+Valid, 666 SdHoareTripleChecker+Invalid, 505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 23:08:41,940 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [639 Valid, 666 Invalid, 505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 454 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 23:08:41,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 899 states. [2022-01-31 23:08:44,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 899 to 896. [2022-01-31 23:08:44,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 896 states, 892 states have (on average 1.0022421524663676) internal successors, (894), 892 states have internal predecessors, (894), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:08:44,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 896 states to 896 states and 897 transitions. [2022-01-31 23:08:44,068 INFO L78 Accepts]: Start accepts. Automaton has 896 states and 897 transitions. Word has length 889 [2022-01-31 23:08:44,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:08:44,068 INFO L470 AbstractCegarLoop]: Abstraction has 896 states and 897 transitions. [2022-01-31 23:08:44,068 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 181 states, 181 states have (on average 4.895027624309392) internal successors, (886), 180 states have internal predecessors, (886), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:08:44,069 INFO L276 IsEmpty]: Start isEmpty. Operand 896 states and 897 transitions. [2022-01-31 23:08:44,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 895 [2022-01-31 23:08:44,073 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:08:44,074 INFO L514 BasicCegarLoop]: trace histogram [170, 169, 169, 169, 169, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:08:44,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2022-01-31 23:08:44,074 INFO L402 AbstractCegarLoop]: === Iteration 173 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:08:44,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:08:44,074 INFO L85 PathProgramCache]: Analyzing trace with hash -2097867210, now seen corresponding path program 169 times [2022-01-31 23:08:44,074 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:08:44,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [733974836] [2022-01-31 23:08:44,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:08:44,076 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 23:08:44,076 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 23:08:44,076 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:08:44,089 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:08:44,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:08:53,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:08:53,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:08:53,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 23:08:53,345 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:08:53,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [733974836] [2022-01-31 23:08:53,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [733974836] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:08:53,345 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:08:53,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [182] imperfect sequences [] total 182 [2022-01-31 23:08:53,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644059331] [2022-01-31 23:08:53,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:08:53,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 182 states [2022-01-31 23:08:53,346 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:08:53,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 182 interpolants. [2022-01-31 23:08:53,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16292, Invalid=16650, Unknown=0, NotChecked=0, Total=32942 [2022-01-31 23:08:53,351 INFO L87 Difference]: Start difference. First operand 896 states and 897 transitions. Second operand has 182 states, 182 states have (on average 4.895604395604396) internal successors, (891), 181 states have internal predecessors, (891), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:08:56,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:08:56,149 INFO L93 Difference]: Finished difference Result 911 states and 913 transitions. [2022-01-31 23:08:56,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 182 states. [2022-01-31 23:08:56,149 INFO L78 Accepts]: Start accepts. Automaton has has 182 states, 182 states have (on average 4.895604395604396) internal successors, (891), 181 states have internal predecessors, (891), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 894 [2022-01-31 23:08:56,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:08:56,150 INFO L225 Difference]: With dead ends: 911 [2022-01-31 23:08:56,150 INFO L226 Difference]: Without dead ends: 904 [2022-01-31 23:08:56,152 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=16292, Invalid=16650, Unknown=0, NotChecked=0, Total=32942 [2022-01-31 23:08:56,152 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 675 mSDsluCounter, 632 mSDsCounter, 0 mSdLazyCounter, 470 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 675 SdHoareTripleChecker+Valid, 667 SdHoareTripleChecker+Invalid, 531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 23:08:56,152 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [675 Valid, 667 Invalid, 531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 470 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 23:08:56,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 904 states. [2022-01-31 23:08:58,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 904 to 901. [2022-01-31 23:08:58,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 901 states, 897 states have (on average 1.0022296544035674) internal successors, (899), 897 states have internal predecessors, (899), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:08:58,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 902 transitions. [2022-01-31 23:08:58,268 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 902 transitions. Word has length 894 [2022-01-31 23:08:58,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:08:58,268 INFO L470 AbstractCegarLoop]: Abstraction has 901 states and 902 transitions. [2022-01-31 23:08:58,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 182 states, 182 states have (on average 4.895604395604396) internal successors, (891), 181 states have internal predecessors, (891), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:08:58,269 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 902 transitions. [2022-01-31 23:08:58,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 900 [2022-01-31 23:08:58,278 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:08:58,279 INFO L514 BasicCegarLoop]: trace histogram [171, 170, 170, 170, 170, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:08:58,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2022-01-31 23:08:58,279 INFO L402 AbstractCegarLoop]: === Iteration 174 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:08:58,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:08:58,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1592864145, now seen corresponding path program 170 times [2022-01-31 23:08:58,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:08:58,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [989052328] [2022-01-31 23:08:58,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:08:58,281 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 23:08:58,281 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 23:08:58,281 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:08:58,295 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:08:58,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:09:07,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:09:07,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:09:07,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 23:09:07,411 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:09:07,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [989052328] [2022-01-31 23:09:07,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [989052328] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:09:07,411 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:09:07,411 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [183] imperfect sequences [] total 183 [2022-01-31 23:09:07,411 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239980300] [2022-01-31 23:09:07,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:09:07,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 183 states [2022-01-31 23:09:07,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:09:07,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 183 interpolants. [2022-01-31 23:09:07,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16473, Invalid=16833, Unknown=0, NotChecked=0, Total=33306 [2022-01-31 23:09:07,417 INFO L87 Difference]: Start difference. First operand 901 states and 902 transitions. Second operand has 183 states, 183 states have (on average 4.896174863387978) internal successors, (896), 182 states have internal predecessors, (896), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:09:10,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:09:10,277 INFO L93 Difference]: Finished difference Result 916 states and 918 transitions. [2022-01-31 23:09:10,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 183 states. [2022-01-31 23:09:10,277 INFO L78 Accepts]: Start accepts. Automaton has has 183 states, 183 states have (on average 4.896174863387978) internal successors, (896), 182 states have internal predecessors, (896), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 899 [2022-01-31 23:09:10,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:09:10,278 INFO L225 Difference]: With dead ends: 916 [2022-01-31 23:09:10,279 INFO L226 Difference]: Without dead ends: 909 [2022-01-31 23:09:10,280 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=16473, Invalid=16833, Unknown=0, NotChecked=0, Total=33306 [2022-01-31 23:09:10,280 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 636 mSDsluCounter, 606 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 636 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 23:09:10,280 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [636 Valid, 641 Invalid, 495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 449 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 23:09:10,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 909 states. [2022-01-31 23:09:12,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 909 to 906. [2022-01-31 23:09:12,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 906 states, 902 states have (on average 1.0022172949002217) internal successors, (904), 902 states have internal predecessors, (904), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:09:12,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 906 states to 906 states and 907 transitions. [2022-01-31 23:09:12,455 INFO L78 Accepts]: Start accepts. Automaton has 906 states and 907 transitions. Word has length 899 [2022-01-31 23:09:12,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:09:12,455 INFO L470 AbstractCegarLoop]: Abstraction has 906 states and 907 transitions. [2022-01-31 23:09:12,455 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 183 states, 183 states have (on average 4.896174863387978) internal successors, (896), 182 states have internal predecessors, (896), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:09:12,456 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states and 907 transitions. [2022-01-31 23:09:12,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 905 [2022-01-31 23:09:12,460 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:09:12,460 INFO L514 BasicCegarLoop]: trace histogram [172, 171, 171, 171, 171, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:09:12,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2022-01-31 23:09:12,461 INFO L402 AbstractCegarLoop]: === Iteration 175 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:09:12,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:09:12,461 INFO L85 PathProgramCache]: Analyzing trace with hash 2067035926, now seen corresponding path program 171 times [2022-01-31 23:09:12,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:09:12,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [373141905] [2022-01-31 23:09:12,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:09:12,463 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 23:09:12,463 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 23:09:12,463 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:09:12,477 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:09:12,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:09:18,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:09:18,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:09:18,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 23:09:18,404 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:09:18,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [373141905] [2022-01-31 23:09:18,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [373141905] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:09:18,405 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:09:18,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [184] imperfect sequences [] total 184 [2022-01-31 23:09:18,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625115469] [2022-01-31 23:09:18,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:09:18,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 184 states [2022-01-31 23:09:18,405 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:09:18,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 184 interpolants. [2022-01-31 23:09:18,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16655, Invalid=17017, Unknown=0, NotChecked=0, Total=33672 [2022-01-31 23:09:18,410 INFO L87 Difference]: Start difference. First operand 906 states and 907 transitions. Second operand has 184 states, 184 states have (on average 4.896739130434782) internal successors, (901), 183 states have internal predecessors, (901), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:09:21,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:09:21,401 INFO L93 Difference]: Finished difference Result 921 states and 923 transitions. [2022-01-31 23:09:21,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 184 states. [2022-01-31 23:09:21,401 INFO L78 Accepts]: Start accepts. Automaton has has 184 states, 184 states have (on average 4.896739130434782) internal successors, (901), 183 states have internal predecessors, (901), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 904 [2022-01-31 23:09:21,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:09:21,402 INFO L225 Difference]: With dead ends: 921 [2022-01-31 23:09:21,403 INFO L226 Difference]: Without dead ends: 914 [2022-01-31 23:09:21,404 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=16655, Invalid=17017, Unknown=0, NotChecked=0, Total=33672 [2022-01-31 23:09:21,404 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 669 mSDsluCounter, 646 mSDsCounter, 0 mSdLazyCounter, 455 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 669 SdHoareTripleChecker+Valid, 681 SdHoareTripleChecker+Invalid, 512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 23:09:21,404 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [669 Valid, 681 Invalid, 512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 455 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 23:09:21,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 914 states. [2022-01-31 23:09:23,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 914 to 911. [2022-01-31 23:09:23,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 911 states, 907 states have (on average 1.0022050716648292) internal successors, (909), 907 states have internal predecessors, (909), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:09:23,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 911 states to 911 states and 912 transitions. [2022-01-31 23:09:23,625 INFO L78 Accepts]: Start accepts. Automaton has 911 states and 912 transitions. Word has length 904 [2022-01-31 23:09:23,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:09:23,625 INFO L470 AbstractCegarLoop]: Abstraction has 911 states and 912 transitions. [2022-01-31 23:09:23,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 184 states, 184 states have (on average 4.896739130434782) internal successors, (901), 183 states have internal predecessors, (901), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:09:23,626 INFO L276 IsEmpty]: Start isEmpty. Operand 911 states and 912 transitions. [2022-01-31 23:09:23,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 910 [2022-01-31 23:09:23,630 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:09:23,631 INFO L514 BasicCegarLoop]: trace histogram [173, 172, 172, 172, 172, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:09:23,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2022-01-31 23:09:23,631 INFO L402 AbstractCegarLoop]: === Iteration 176 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:09:23,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:09:23,631 INFO L85 PathProgramCache]: Analyzing trace with hash 93018289, now seen corresponding path program 172 times [2022-01-31 23:09:23,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:09:23,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2035401961] [2022-01-31 23:09:23,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:09:23,633 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 23:09:23,633 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 23:09:23,633 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:09:23,647 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:09:23,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:09:30,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:09:30,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:09:30,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 23:09:30,672 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:09:30,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2035401961] [2022-01-31 23:09:30,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2035401961] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:09:30,672 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:09:30,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [185] imperfect sequences [] total 185 [2022-01-31 23:09:30,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892807134] [2022-01-31 23:09:30,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:09:30,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 185 states [2022-01-31 23:09:30,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:09:30,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 185 interpolants. [2022-01-31 23:09:30,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16838, Invalid=17202, Unknown=0, NotChecked=0, Total=34040 [2022-01-31 23:09:30,676 INFO L87 Difference]: Start difference. First operand 911 states and 912 transitions. Second operand has 185 states, 185 states have (on average 4.897297297297297) internal successors, (906), 184 states have internal predecessors, (906), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:09:33,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:09:33,718 INFO L93 Difference]: Finished difference Result 926 states and 928 transitions. [2022-01-31 23:09:33,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 185 states. [2022-01-31 23:09:33,719 INFO L78 Accepts]: Start accepts. Automaton has has 185 states, 185 states have (on average 4.897297297297297) internal successors, (906), 184 states have internal predecessors, (906), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 909 [2022-01-31 23:09:33,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:09:33,720 INFO L225 Difference]: With dead ends: 926 [2022-01-31 23:09:33,720 INFO L226 Difference]: Without dead ends: 919 [2022-01-31 23:09:33,721 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=16838, Invalid=17202, Unknown=0, NotChecked=0, Total=34040 [2022-01-31 23:09:33,721 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 678 mSDsluCounter, 653 mSDsCounter, 0 mSdLazyCounter, 459 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 678 SdHoareTripleChecker+Valid, 688 SdHoareTripleChecker+Invalid, 516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 23:09:33,721 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [678 Valid, 688 Invalid, 516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 459 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 23:09:33,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 919 states. [2022-01-31 23:09:35,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 919 to 916. [2022-01-31 23:09:35,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 916 states, 912 states have (on average 1.0021929824561404) internal successors, (914), 912 states have internal predecessors, (914), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:09:35,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 916 states to 916 states and 917 transitions. [2022-01-31 23:09:35,959 INFO L78 Accepts]: Start accepts. Automaton has 916 states and 917 transitions. Word has length 909 [2022-01-31 23:09:35,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:09:35,959 INFO L470 AbstractCegarLoop]: Abstraction has 916 states and 917 transitions. [2022-01-31 23:09:35,960 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 185 states, 185 states have (on average 4.897297297297297) internal successors, (906), 184 states have internal predecessors, (906), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:09:35,960 INFO L276 IsEmpty]: Start isEmpty. Operand 916 states and 917 transitions. [2022-01-31 23:09:35,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 915 [2022-01-31 23:09:35,964 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:09:35,964 INFO L514 BasicCegarLoop]: trace histogram [174, 173, 173, 173, 173, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:09:35,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2022-01-31 23:09:35,965 INFO L402 AbstractCegarLoop]: === Iteration 177 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:09:35,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:09:35,965 INFO L85 PathProgramCache]: Analyzing trace with hash 2077769718, now seen corresponding path program 173 times [2022-01-31 23:09:35,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:09:35,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1728951232] [2022-01-31 23:09:35,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:09:35,967 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 23:09:35,967 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 23:09:35,967 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:09:35,981 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:09:36,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:09:43,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:09:43,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:09:43,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 23:09:43,381 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:09:43,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1728951232] [2022-01-31 23:09:43,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1728951232] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:09:43,382 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:09:43,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [186] imperfect sequences [] total 186 [2022-01-31 23:09:43,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267230233] [2022-01-31 23:09:43,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:09:43,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 186 states [2022-01-31 23:09:43,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:09:43,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 186 interpolants. [2022-01-31 23:09:43,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17022, Invalid=17388, Unknown=0, NotChecked=0, Total=34410 [2022-01-31 23:09:43,387 INFO L87 Difference]: Start difference. First operand 916 states and 917 transitions. Second operand has 186 states, 186 states have (on average 4.897849462365591) internal successors, (911), 185 states have internal predecessors, (911), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:09:46,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:09:46,462 INFO L93 Difference]: Finished difference Result 931 states and 933 transitions. [2022-01-31 23:09:46,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 186 states. [2022-01-31 23:09:46,462 INFO L78 Accepts]: Start accepts. Automaton has has 186 states, 186 states have (on average 4.897849462365591) internal successors, (911), 185 states have internal predecessors, (911), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 914 [2022-01-31 23:09:46,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:09:46,463 INFO L225 Difference]: With dead ends: 931 [2022-01-31 23:09:46,463 INFO L226 Difference]: Without dead ends: 924 [2022-01-31 23:09:46,465 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=17022, Invalid=17388, Unknown=0, NotChecked=0, Total=34410 [2022-01-31 23:09:46,465 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 672 mSDsluCounter, 661 mSDsCounter, 0 mSdLazyCounter, 477 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 672 SdHoareTripleChecker+Valid, 696 SdHoareTripleChecker+Invalid, 534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 23:09:46,465 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [672 Valid, 696 Invalid, 534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 477 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 23:09:46,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 924 states. [2022-01-31 23:09:48,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 924 to 921. [2022-01-31 23:09:48,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 921 states, 917 states have (on average 1.0021810250817884) internal successors, (919), 917 states have internal predecessors, (919), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:09:48,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 921 states to 921 states and 922 transitions. [2022-01-31 23:09:48,779 INFO L78 Accepts]: Start accepts. Automaton has 921 states and 922 transitions. Word has length 914 [2022-01-31 23:09:48,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:09:48,780 INFO L470 AbstractCegarLoop]: Abstraction has 921 states and 922 transitions. [2022-01-31 23:09:48,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 186 states, 186 states have (on average 4.897849462365591) internal successors, (911), 185 states have internal predecessors, (911), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:09:48,780 INFO L276 IsEmpty]: Start isEmpty. Operand 921 states and 922 transitions. [2022-01-31 23:09:48,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 920 [2022-01-31 23:09:48,785 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:09:48,785 INFO L514 BasicCegarLoop]: trace histogram [175, 174, 174, 174, 174, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:09:48,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2022-01-31 23:09:48,785 INFO L402 AbstractCegarLoop]: === Iteration 178 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:09:48,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:09:48,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1170072623, now seen corresponding path program 174 times [2022-01-31 23:09:48,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:09:48,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1213887982] [2022-01-31 23:09:48,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:09:48,787 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 23:09:48,788 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 23:09:48,788 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:09:48,801 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:09:48,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:09:58,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:09:58,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:09:58,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 23:09:58,161 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:09:58,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1213887982] [2022-01-31 23:09:58,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1213887982] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:09:58,161 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:09:58,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [187] imperfect sequences [] total 187 [2022-01-31 23:09:58,162 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909104363] [2022-01-31 23:09:58,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:09:58,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 187 states [2022-01-31 23:09:58,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:09:58,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 187 interpolants. [2022-01-31 23:09:58,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17207, Invalid=17575, Unknown=0, NotChecked=0, Total=34782 [2022-01-31 23:09:58,166 INFO L87 Difference]: Start difference. First operand 921 states and 922 transitions. Second operand has 187 states, 187 states have (on average 4.898395721925134) internal successors, (916), 186 states have internal predecessors, (916), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:10:01,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:10:01,303 INFO L93 Difference]: Finished difference Result 936 states and 938 transitions. [2022-01-31 23:10:01,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 187 states. [2022-01-31 23:10:01,304 INFO L78 Accepts]: Start accepts. Automaton has has 187 states, 187 states have (on average 4.898395721925134) internal successors, (916), 186 states have internal predecessors, (916), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 919 [2022-01-31 23:10:01,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:10:01,305 INFO L225 Difference]: With dead ends: 936 [2022-01-31 23:10:01,305 INFO L226 Difference]: Without dead ends: 929 [2022-01-31 23:10:01,306 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=17207, Invalid=17575, Unknown=0, NotChecked=0, Total=34782 [2022-01-31 23:10:01,306 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 732 mSDsluCounter, 694 mSDsCounter, 0 mSdLazyCounter, 467 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 732 SdHoareTripleChecker+Valid, 729 SdHoareTripleChecker+Invalid, 544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 23:10:01,306 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [732 Valid, 729 Invalid, 544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 467 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 23:10:01,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 929 states. [2022-01-31 23:10:03,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 929 to 926. [2022-01-31 23:10:03,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 926 states, 922 states have (on average 1.002169197396963) internal successors, (924), 922 states have internal predecessors, (924), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:10:03,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 927 transitions. [2022-01-31 23:10:03,658 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 927 transitions. Word has length 919 [2022-01-31 23:10:03,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:10:03,659 INFO L470 AbstractCegarLoop]: Abstraction has 926 states and 927 transitions. [2022-01-31 23:10:03,659 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 187 states, 187 states have (on average 4.898395721925134) internal successors, (916), 186 states have internal predecessors, (916), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:10:03,659 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 927 transitions. [2022-01-31 23:10:03,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 925 [2022-01-31 23:10:03,677 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:10:03,678 INFO L514 BasicCegarLoop]: trace histogram [176, 175, 175, 175, 175, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:10:03,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2022-01-31 23:10:03,678 INFO L402 AbstractCegarLoop]: === Iteration 179 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:10:03,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:10:03,678 INFO L85 PathProgramCache]: Analyzing trace with hash 1082028246, now seen corresponding path program 175 times [2022-01-31 23:10:03,678 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:10:03,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1678991063] [2022-01-31 23:10:03,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:10:03,680 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 23:10:03,680 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 23:10:03,680 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:10:03,694 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:10:03,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat