/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/reducercommutativity/max10-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-31 18:33:35,122 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 18:33:35,124 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 18:33:35,166 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-31 18:33:35,193 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-31 18:33:35,193 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-31 18:33:35,194 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-31 18:33:35,194 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-31 18:33:35,195 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-31 18:33:35,195 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-31 18:33:35,198 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-31 18:33:35,203 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-31 18:33:35,203 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-31 18:33:35,204 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-31 18:33:35,205 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-31 18:33:35,206 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-31 18:33:35,208 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-31 18:33:35,215 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-31 18:33:35,215 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-31 18:33:35,216 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-31 18:33:35,217 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 18:33:35,225 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 18:33:35,225 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 18:33:35,227 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 18:33:35,227 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-31 18:33:35,227 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 18:33:35,227 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-31 18:33:35,227 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 18:33:35,227 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 18:33:35,227 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 18:33:35,227 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 18:33:35,228 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-31 18:33:35,228 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 18:33:35,228 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 18:33:35,228 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 18:33:35,229 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 18:33:35,229 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 18:33:35,229 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-31 18:33:35,229 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 18:33:35,229 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 18:33:35,229 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 18:33:35,229 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-01-31 18:33:35,229 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-31 18:33:35,229 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-01-31 18:33:35,229 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 18:33:35,438 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 18:33:35,459 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 18:33:35,461 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 18:33:35,462 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 18:33:35,462 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 18:33:35,463 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/max10-1.i [2022-01-31 18:33:35,515 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/719618763/1478912b2e964e26897783faee9b233e/FLAG99cda9a43 [2022-01-31 18:33:35,827 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 18:33:35,827 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/reducercommutativity/max10-1.i [2022-01-31 18:33:35,834 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/719618763/1478912b2e964e26897783faee9b233e/FLAG99cda9a43 [2022-01-31 18:33:36,257 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/719618763/1478912b2e964e26897783faee9b233e [2022-01-31 18:33:36,259 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 18:33:36,260 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-31 18:33:36,263 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 18:33:36,263 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 18:33:36,265 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 18:33:36,266 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 06:33:36" (1/1) ... [2022-01-31 18:33:36,266 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12cd62c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 06:33:36, skipping insertion in model container [2022-01-31 18:33:36,267 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 06:33:36" (1/1) ... [2022-01-31 18:33:36,271 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 18:33:36,282 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 18:33:36,463 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/reducercommutativity/max10-1.i[1290,1303] [2022-01-31 18:33:36,469 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 18:33:36,474 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 18:33:36,504 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/reducercommutativity/max10-1.i[1290,1303] [2022-01-31 18:33:36,509 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 18:33:36,518 INFO L208 MainTranslator]: Completed translation [2022-01-31 18:33:36,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 06:33:36 WrapperNode [2022-01-31 18:33:36,518 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 18:33:36,521 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 18:33:36,521 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 18:33:36,521 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 18:33:36,529 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 06:33:36" (1/1) ... [2022-01-31 18:33:36,530 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 06:33:36" (1/1) ... [2022-01-31 18:33:36,541 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 06:33:36" (1/1) ... [2022-01-31 18:33:36,541 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 06:33:36" (1/1) ... [2022-01-31 18:33:36,554 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 06:33:36" (1/1) ... [2022-01-31 18:33:36,557 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 06:33:36" (1/1) ... [2022-01-31 18:33:36,558 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 06:33:36" (1/1) ... [2022-01-31 18:33:36,559 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 18:33:36,559 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 18:33:36,560 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 18:33:36,560 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 18:33:36,561 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 06:33:36" (1/1) ... [2022-01-31 18:33:36,566 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 18:33:36,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 18:33:36,593 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 18:33:36,611 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 18:33:36,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 18:33:36,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 18:33:36,623 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 18:33:36,623 INFO L138 BoogieDeclarations]: Found implementation of procedure max [2022-01-31 18:33:36,623 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 18:33:36,624 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 18:33:36,624 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 18:33:36,624 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-01-31 18:33:36,624 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-01-31 18:33:36,624 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 18:33:36,625 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 18:33:36,625 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-01-31 18:33:36,625 INFO L130 BoogieDeclarations]: Found specification of procedure max [2022-01-31 18:33:36,625 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 18:33:36,626 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 18:33:36,627 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-31 18:33:36,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 18:33:36,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 18:33:36,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 18:33:36,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 18:33:36,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 18:33:36,697 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 18:33:36,699 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 18:33:36,841 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 18:33:36,856 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 18:33:36,857 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-01-31 18:33:36,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 06:33:36 BoogieIcfgContainer [2022-01-31 18:33:36,860 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 18:33:36,861 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 18:33:36,861 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 18:33:36,878 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 18:33:36,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 06:33:36" (1/3) ... [2022-01-31 18:33:36,878 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@138ca2ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 06:33:36, skipping insertion in model container [2022-01-31 18:33:36,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 06:33:36" (2/3) ... [2022-01-31 18:33:36,879 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@138ca2ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 06:33:36, skipping insertion in model container [2022-01-31 18:33:36,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 06:33:36" (3/3) ... [2022-01-31 18:33:36,880 INFO L111 eAbstractionObserver]: Analyzing ICFG max10-1.i [2022-01-31 18:33:36,883 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-01-31 18:33:36,883 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 18:33:36,918 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 18:33:36,924 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 18:33:36,924 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 18:33:36,938 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 23 states have (on average 1.391304347826087) internal successors, (32), 24 states have internal predecessors, (32), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-01-31 18:33:36,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-01-31 18:33:36,944 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:33:36,944 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:33:36,945 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:33:36,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:33:36,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1752078259, now seen corresponding path program 1 times [2022-01-31 18:33:36,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:33:36,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1126730526] [2022-01-31 18:33:36,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:33:36,971 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:33:37,010 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:33:37,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:37,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:33:37,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:37,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 18:33:37,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:37,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-01-31 18:33:37,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:37,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-01-31 18:33:37,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:37,187 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-01-31 18:33:37,188 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:33:37,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1126730526] [2022-01-31 18:33:37,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1126730526] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:33:37,189 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:33:37,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-31 18:33:37,190 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516756626] [2022-01-31 18:33:37,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:33:37,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-31 18:33:37,193 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:33:37,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-31 18:33:37,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-31 18:33:37,210 INFO L87 Difference]: Start difference. First operand has 33 states, 23 states have (on average 1.391304347826087) internal successors, (32), 24 states have internal predecessors, (32), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:33:37,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:33:37,352 INFO L93 Difference]: Finished difference Result 60 states and 81 transitions. [2022-01-31 18:33:37,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-31 18:33:37,355 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 32 [2022-01-31 18:33:37,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:33:37,360 INFO L225 Difference]: With dead ends: 60 [2022-01-31 18:33:37,360 INFO L226 Difference]: Without dead ends: 30 [2022-01-31 18:33:37,363 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-31 18:33:37,367 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 27 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:33:37,368 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 42 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:33:37,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-01-31 18:33:37,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2022-01-31 18:33:37,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 21 states have internal predecessors, (25), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:33:37,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2022-01-31 18:33:37,398 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 32 [2022-01-31 18:33:37,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:33:37,398 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2022-01-31 18:33:37,399 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:33:37,399 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2022-01-31 18:33:37,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-01-31 18:33:37,401 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:33:37,401 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:33:37,402 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 18:33:37,402 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:33:37,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:33:37,405 INFO L85 PathProgramCache]: Analyzing trace with hash 279578018, now seen corresponding path program 1 times [2022-01-31 18:33:37,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:33:37,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1997550349] [2022-01-31 18:33:37,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:33:37,420 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:33:37,420 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:33:37,420 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:33:37,424 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:33:37,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:37,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:33:37,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:37,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-31 18:33:37,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:37,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-31 18:33:37,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:37,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-01-31 18:33:37,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:37,520 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-01-31 18:33:37,520 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:33:37,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1997550349] [2022-01-31 18:33:37,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1997550349] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:33:37,521 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:33:37,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-31 18:33:37,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6051222] [2022-01-31 18:33:37,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:33:37,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-31 18:33:37,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:33:37,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-31 18:33:37,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-31 18:33:37,523 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:33:37,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:33:37,644 INFO L93 Difference]: Finished difference Result 56 states and 71 transitions. [2022-01-31 18:33:37,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-31 18:33:37,645 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 34 [2022-01-31 18:33:37,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:33:37,645 INFO L225 Difference]: With dead ends: 56 [2022-01-31 18:33:37,646 INFO L226 Difference]: Without dead ends: 36 [2022-01-31 18:33:37,646 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-01-31 18:33:37,647 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 34 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:33:37,647 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 42 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:33:37,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-01-31 18:33:37,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 32. [2022-01-31 18:33:37,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 24 states have internal predecessors, (28), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:33:37,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 37 transitions. [2022-01-31 18:33:37,653 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 37 transitions. Word has length 34 [2022-01-31 18:33:37,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:33:37,653 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 37 transitions. [2022-01-31 18:33:37,654 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:33:37,654 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 37 transitions. [2022-01-31 18:33:37,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-01-31 18:33:37,655 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:33:37,655 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:33:37,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-31 18:33:37,655 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:33:37,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:33:37,655 INFO L85 PathProgramCache]: Analyzing trace with hash -642115777, now seen corresponding path program 1 times [2022-01-31 18:33:37,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:33:37,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1678338608] [2022-01-31 18:33:37,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:33:37,658 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:33:37,658 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:33:37,658 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:33:37,659 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:33:37,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:37,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:33:37,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:37,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-01-31 18:33:37,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:37,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-01-31 18:33:37,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:37,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 18:33:37,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:37,760 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-01-31 18:33:37,761 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:33:37,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1678338608] [2022-01-31 18:33:37,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1678338608] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:33:37,761 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:33:37,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-31 18:33:37,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089504273] [2022-01-31 18:33:37,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:33:37,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-31 18:33:37,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:33:37,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-31 18:33:37,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-31 18:33:37,762 INFO L87 Difference]: Start difference. First operand 32 states and 37 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:33:37,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:33:37,844 INFO L93 Difference]: Finished difference Result 59 states and 73 transitions. [2022-01-31 18:33:37,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-31 18:33:37,844 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 48 [2022-01-31 18:33:37,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:33:37,848 INFO L225 Difference]: With dead ends: 59 [2022-01-31 18:33:37,848 INFO L226 Difference]: Without dead ends: 39 [2022-01-31 18:33:37,850 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-31 18:33:37,855 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 38 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 18:33:37,856 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 39 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 18:33:37,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-01-31 18:33:37,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2022-01-31 18:33:37,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 28 states have internal predecessors, (33), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:33:37,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2022-01-31 18:33:37,866 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 48 [2022-01-31 18:33:37,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:33:37,866 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2022-01-31 18:33:37,866 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:33:37,867 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2022-01-31 18:33:37,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-01-31 18:33:37,868 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:33:37,868 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:33:37,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-31 18:33:37,868 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:33:37,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:33:37,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1928555366, now seen corresponding path program 2 times [2022-01-31 18:33:37,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:33:37,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1983006393] [2022-01-31 18:33:37,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:33:37,873 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:33:37,873 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:33:37,873 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:33:37,874 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:33:37,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:37,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:33:37,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:37,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-01-31 18:33:37,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:37,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-01-31 18:33:37,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:37,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 18:33:37,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:37,985 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-01-31 18:33:37,985 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:33:37,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1983006393] [2022-01-31 18:33:37,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1983006393] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:33:37,985 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:33:37,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-31 18:33:37,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455185792] [2022-01-31 18:33:37,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:33:37,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-31 18:33:37,986 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:33:37,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-31 18:33:37,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-31 18:33:37,987 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:33:38,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:33:38,042 INFO L93 Difference]: Finished difference Result 57 states and 66 transitions. [2022-01-31 18:33:38,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-31 18:33:38,043 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 60 [2022-01-31 18:33:38,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:33:38,044 INFO L225 Difference]: With dead ends: 57 [2022-01-31 18:33:38,045 INFO L226 Difference]: Without dead ends: 38 [2022-01-31 18:33:38,045 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-31 18:33:38,049 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 24 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 18:33:38,050 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 35 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 18:33:38,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-01-31 18:33:38,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2022-01-31 18:33:38,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 29 states have internal predecessors, (34), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:33:38,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 43 transitions. [2022-01-31 18:33:38,055 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 43 transitions. Word has length 60 [2022-01-31 18:33:38,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:33:38,057 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 43 transitions. [2022-01-31 18:33:38,057 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:33:38,057 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 43 transitions. [2022-01-31 18:33:38,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-31 18:33:38,057 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:33:38,058 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:33:38,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-31 18:33:38,058 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:33:38,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:33:38,058 INFO L85 PathProgramCache]: Analyzing trace with hash 507059448, now seen corresponding path program 1 times [2022-01-31 18:33:38,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:33:38,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1326981778] [2022-01-31 18:33:38,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:33:38,060 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:33:38,060 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:33:38,060 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:33:38,061 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:33:38,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:38,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:33:38,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:38,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-01-31 18:33:38,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:38,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-01-31 18:33:38,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:38,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-01-31 18:33:38,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:38,156 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-01-31 18:33:38,156 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:33:38,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1326981778] [2022-01-31 18:33:38,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1326981778] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:33:38,156 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:33:38,156 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-31 18:33:38,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539287413] [2022-01-31 18:33:38,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:33:38,157 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-31 18:33:38,157 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:33:38,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-31 18:33:38,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-31 18:33:38,157 INFO L87 Difference]: Start difference. First operand 37 states and 43 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:33:38,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:33:38,215 INFO L93 Difference]: Finished difference Result 59 states and 68 transitions. [2022-01-31 18:33:38,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-31 18:33:38,215 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 62 [2022-01-31 18:33:38,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:33:38,216 INFO L225 Difference]: With dead ends: 59 [2022-01-31 18:33:38,216 INFO L226 Difference]: Without dead ends: 40 [2022-01-31 18:33:38,216 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-31 18:33:38,217 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 26 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 18:33:38,217 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 35 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 18:33:38,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-01-31 18:33:38,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2022-01-31 18:33:38,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 31 states have (on average 1.1612903225806452) internal successors, (36), 31 states have internal predecessors, (36), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:33:38,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions. [2022-01-31 18:33:38,231 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 62 [2022-01-31 18:33:38,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:33:38,232 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions. [2022-01-31 18:33:38,232 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:33:38,232 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2022-01-31 18:33:38,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-31 18:33:38,234 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:33:38,234 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:33:38,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-31 18:33:38,235 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:33:38,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:33:38,235 INFO L85 PathProgramCache]: Analyzing trace with hash 375719382, now seen corresponding path program 2 times [2022-01-31 18:33:38,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:33:38,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [977389416] [2022-01-31 18:33:38,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:33:38,239 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:33:38,239 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:33:38,239 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:33:38,240 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:33:38,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:38,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:33:38,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:38,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-01-31 18:33:38,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:38,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-01-31 18:33:38,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:38,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-31 18:33:38,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:38,353 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-01-31 18:33:38,353 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:33:38,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [977389416] [2022-01-31 18:33:38,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [977389416] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:33:38,353 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:33:38,353 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-31 18:33:38,354 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109986009] [2022-01-31 18:33:38,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:33:38,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-31 18:33:38,354 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:33:38,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-31 18:33:38,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-31 18:33:38,356 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:33:38,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:33:38,447 INFO L93 Difference]: Finished difference Result 70 states and 82 transitions. [2022-01-31 18:33:38,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-31 18:33:38,448 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 64 [2022-01-31 18:33:38,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:33:38,450 INFO L225 Difference]: With dead ends: 70 [2022-01-31 18:33:38,450 INFO L226 Difference]: Without dead ends: 42 [2022-01-31 18:33:38,451 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-01-31 18:33:38,452 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 28 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 18:33:38,456 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 35 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 18:33:38,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-01-31 18:33:38,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2022-01-31 18:33:38,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 33 states have internal predecessors, (38), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:33:38,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2022-01-31 18:33:38,464 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 64 [2022-01-31 18:33:38,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:33:38,465 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2022-01-31 18:33:38,465 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:33:38,465 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2022-01-31 18:33:38,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-31 18:33:38,468 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:33:38,468 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:33:38,468 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-31 18:33:38,468 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:33:38,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:33:38,469 INFO L85 PathProgramCache]: Analyzing trace with hash -2079708648, now seen corresponding path program 3 times [2022-01-31 18:33:38,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:33:38,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2042738196] [2022-01-31 18:33:38,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:33:38,472 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:33:38,472 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:33:38,472 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:33:38,473 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:33:38,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:38,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:33:38,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:38,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-01-31 18:33:38,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:38,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-01-31 18:33:38,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:38,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-01-31 18:33:38,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:38,550 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-01-31 18:33:38,550 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:33:38,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2042738196] [2022-01-31 18:33:38,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2042738196] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:33:38,553 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:33:38,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-31 18:33:38,557 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48842768] [2022-01-31 18:33:38,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:33:38,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-31 18:33:38,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:33:38,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-31 18:33:38,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-31 18:33:38,559 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:33:38,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:33:38,623 INFO L93 Difference]: Finished difference Result 72 states and 84 transitions. [2022-01-31 18:33:38,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-31 18:33:38,624 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 66 [2022-01-31 18:33:38,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:33:38,625 INFO L225 Difference]: With dead ends: 72 [2022-01-31 18:33:38,625 INFO L226 Difference]: Without dead ends: 44 [2022-01-31 18:33:38,628 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2022-01-31 18:33:38,628 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 30 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 18:33:38,629 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 35 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 18:33:38,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-01-31 18:33:38,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2022-01-31 18:33:38,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 35 states have (on average 1.1428571428571428) internal successors, (40), 35 states have internal predecessors, (40), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:33:38,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 49 transitions. [2022-01-31 18:33:38,645 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 49 transitions. Word has length 66 [2022-01-31 18:33:38,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:33:38,647 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 49 transitions. [2022-01-31 18:33:38,647 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:33:38,647 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 49 transitions. [2022-01-31 18:33:38,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-31 18:33:38,648 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:33:38,649 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:33:38,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-31 18:33:38,649 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:33:38,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:33:38,649 INFO L85 PathProgramCache]: Analyzing trace with hash 485967322, now seen corresponding path program 4 times [2022-01-31 18:33:38,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:33:38,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [644796960] [2022-01-31 18:33:38,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:33:38,651 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:33:38,651 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:33:38,651 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:33:38,652 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:33:38,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:38,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:33:38,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:38,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-31 18:33:38,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:38,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 18:33:38,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:38,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 18:33:38,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:38,738 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-01-31 18:33:38,738 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:33:38,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [644796960] [2022-01-31 18:33:38,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [644796960] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:33:38,739 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:33:38,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-31 18:33:38,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198119116] [2022-01-31 18:33:38,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:33:38,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-31 18:33:38,741 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:33:38,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-31 18:33:38,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-31 18:33:38,741 INFO L87 Difference]: Start difference. First operand 43 states and 49 transitions. Second operand has 8 states, 8 states have (on average 3.625) internal successors, (29), 7 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:33:38,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:33:38,844 INFO L93 Difference]: Finished difference Result 74 states and 86 transitions. [2022-01-31 18:33:38,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-31 18:33:38,844 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 7 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 68 [2022-01-31 18:33:38,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:33:38,845 INFO L225 Difference]: With dead ends: 74 [2022-01-31 18:33:38,845 INFO L226 Difference]: Without dead ends: 46 [2022-01-31 18:33:38,845 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2022-01-31 18:33:38,846 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 32 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:33:38,846 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 45 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:33:38,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-01-31 18:33:38,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2022-01-31 18:33:38,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 37 states have (on average 1.135135135135135) internal successors, (42), 37 states have internal predecessors, (42), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:33:38,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 51 transitions. [2022-01-31 18:33:38,854 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 51 transitions. Word has length 68 [2022-01-31 18:33:38,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:33:38,854 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 51 transitions. [2022-01-31 18:33:38,854 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 7 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:33:38,855 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2022-01-31 18:33:38,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-31 18:33:38,855 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:33:38,855 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:33:38,856 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-31 18:33:38,856 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:33:38,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:33:38,856 INFO L85 PathProgramCache]: Analyzing trace with hash 789346588, now seen corresponding path program 5 times [2022-01-31 18:33:38,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:33:38,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1061717439] [2022-01-31 18:33:38,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:33:38,858 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:33:38,859 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:33:38,859 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:33:38,860 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:33:38,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:38,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:33:38,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:38,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:33:38,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:38,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-01-31 18:33:38,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:38,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-01-31 18:33:38,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:38,955 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-01-31 18:33:38,955 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:33:38,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1061717439] [2022-01-31 18:33:38,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1061717439] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:33:38,955 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:33:38,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-31 18:33:38,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009544318] [2022-01-31 18:33:38,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:33:38,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-31 18:33:38,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:33:38,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-31 18:33:38,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-01-31 18:33:38,957 INFO L87 Difference]: Start difference. First operand 45 states and 51 transitions. Second operand has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 8 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:33:39,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:33:39,046 INFO L93 Difference]: Finished difference Result 76 states and 88 transitions. [2022-01-31 18:33:39,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-31 18:33:39,046 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 8 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 70 [2022-01-31 18:33:39,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:33:39,046 INFO L225 Difference]: With dead ends: 76 [2022-01-31 18:33:39,047 INFO L226 Difference]: Without dead ends: 48 [2022-01-31 18:33:39,047 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2022-01-31 18:33:39,047 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 34 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 18:33:39,048 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 45 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 18:33:39,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-01-31 18:33:39,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2022-01-31 18:33:39,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 39 states have (on average 1.1282051282051282) internal successors, (44), 39 states have internal predecessors, (44), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:33:39,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 53 transitions. [2022-01-31 18:33:39,052 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 53 transitions. Word has length 70 [2022-01-31 18:33:39,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:33:39,052 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 53 transitions. [2022-01-31 18:33:39,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 8 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:33:39,053 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 53 transitions. [2022-01-31 18:33:39,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-31 18:33:39,053 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:33:39,053 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:33:39,053 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-31 18:33:39,053 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:33:39,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:33:39,054 INFO L85 PathProgramCache]: Analyzing trace with hash 279045086, now seen corresponding path program 6 times [2022-01-31 18:33:39,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:33:39,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1613023642] [2022-01-31 18:33:39,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:33:39,056 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:33:39,056 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:33:39,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:33:39,057 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:33:39,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:39,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:33:39,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:39,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 18:33:39,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:39,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-01-31 18:33:39,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:39,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-01-31 18:33:39,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:39,138 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-01-31 18:33:39,138 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:33:39,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1613023642] [2022-01-31 18:33:39,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1613023642] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:33:39,138 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:33:39,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-31 18:33:39,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917400070] [2022-01-31 18:33:39,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:33:39,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-31 18:33:39,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:33:39,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-31 18:33:39,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2022-01-31 18:33:39,140 INFO L87 Difference]: Start difference. First operand 47 states and 53 transitions. Second operand has 10 states, 10 states have (on average 3.3) internal successors, (33), 9 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:33:39,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:33:39,253 INFO L93 Difference]: Finished difference Result 78 states and 90 transitions. [2022-01-31 18:33:39,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-31 18:33:39,253 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 9 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 72 [2022-01-31 18:33:39,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:33:39,255 INFO L225 Difference]: With dead ends: 78 [2022-01-31 18:33:39,255 INFO L226 Difference]: Without dead ends: 50 [2022-01-31 18:33:39,255 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2022-01-31 18:33:39,255 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 36 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:33:39,256 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 45 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:33:39,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-01-31 18:33:39,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2022-01-31 18:33:39,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 41 states have (on average 1.1219512195121952) internal successors, (46), 41 states have internal predecessors, (46), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:33:39,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 55 transitions. [2022-01-31 18:33:39,274 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 55 transitions. Word has length 72 [2022-01-31 18:33:39,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:33:39,275 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 55 transitions. [2022-01-31 18:33:39,275 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 9 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:33:39,275 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 55 transitions. [2022-01-31 18:33:39,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-31 18:33:39,275 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:33:39,275 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:33:39,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-31 18:33:39,276 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:33:39,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:33:39,276 INFO L85 PathProgramCache]: Analyzing trace with hash -494426592, now seen corresponding path program 7 times [2022-01-31 18:33:39,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:33:39,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1990512268] [2022-01-31 18:33:39,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:33:39,278 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:33:39,278 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:33:39,278 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:33:39,279 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:33:39,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:39,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:33:39,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:39,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-31 18:33:39,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:39,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-01-31 18:33:39,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:39,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-01-31 18:33:39,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:39,365 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-01-31 18:33:39,365 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:33:39,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1990512268] [2022-01-31 18:33:39,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1990512268] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:33:39,366 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:33:39,366 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-31 18:33:39,366 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139819293] [2022-01-31 18:33:39,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:33:39,366 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-31 18:33:39,366 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:33:39,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-31 18:33:39,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2022-01-31 18:33:39,367 INFO L87 Difference]: Start difference. First operand 49 states and 55 transitions. Second operand has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 10 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:33:39,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:33:39,485 INFO L93 Difference]: Finished difference Result 80 states and 92 transitions. [2022-01-31 18:33:39,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-31 18:33:39,486 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 10 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 74 [2022-01-31 18:33:39,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:33:39,486 INFO L225 Difference]: With dead ends: 80 [2022-01-31 18:33:39,486 INFO L226 Difference]: Without dead ends: 52 [2022-01-31 18:33:39,487 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=135, Invalid=207, Unknown=0, NotChecked=0, Total=342 [2022-01-31 18:33:39,487 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 38 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:33:39,488 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 45 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:33:39,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-01-31 18:33:39,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2022-01-31 18:33:39,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 43 states have (on average 1.1162790697674418) internal successors, (48), 43 states have internal predecessors, (48), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:33:39,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 57 transitions. [2022-01-31 18:33:39,493 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 57 transitions. Word has length 74 [2022-01-31 18:33:39,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:33:39,493 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 57 transitions. [2022-01-31 18:33:39,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 10 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:33:39,493 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 57 transitions. [2022-01-31 18:33:39,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-31 18:33:39,494 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:33:39,494 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 6, 6, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:33:39,494 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-31 18:33:39,494 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:33:39,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:33:39,495 INFO L85 PathProgramCache]: Analyzing trace with hash -771366942, now seen corresponding path program 8 times [2022-01-31 18:33:39,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:33:39,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [4672134] [2022-01-31 18:33:39,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:33:39,498 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:33:39,498 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:33:39,498 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:33:39,499 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:33:39,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:39,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:33:39,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:39,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-01-31 18:33:39,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:39,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-01-31 18:33:39,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:39,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 18:33:39,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:39,596 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-01-31 18:33:39,596 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:33:39,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [4672134] [2022-01-31 18:33:39,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [4672134] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:33:39,596 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:33:39,596 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-01-31 18:33:39,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047981387] [2022-01-31 18:33:39,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:33:39,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-31 18:33:39,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:33:39,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-31 18:33:39,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2022-01-31 18:33:39,598 INFO L87 Difference]: Start difference. First operand 51 states and 57 transitions. Second operand has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 11 states have internal predecessors, (37), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:33:39,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:33:39,735 INFO L93 Difference]: Finished difference Result 82 states and 94 transitions. [2022-01-31 18:33:39,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-31 18:33:39,735 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 11 states have internal predecessors, (37), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 76 [2022-01-31 18:33:39,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:33:39,736 INFO L225 Difference]: With dead ends: 82 [2022-01-31 18:33:39,736 INFO L226 Difference]: Without dead ends: 54 [2022-01-31 18:33:39,737 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420 [2022-01-31 18:33:39,737 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 40 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:33:39,737 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 50 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:33:39,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-01-31 18:33:39,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2022-01-31 18:33:39,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 45 states have (on average 1.1111111111111112) internal successors, (50), 45 states have internal predecessors, (50), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:33:39,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 59 transitions. [2022-01-31 18:33:39,742 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 59 transitions. Word has length 76 [2022-01-31 18:33:39,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:33:39,742 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 59 transitions. [2022-01-31 18:33:39,742 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 11 states have internal predecessors, (37), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:33:39,742 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 59 transitions. [2022-01-31 18:33:39,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-31 18:33:39,743 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:33:39,743 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 6, 6, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:33:39,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-31 18:33:39,743 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:33:39,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:33:39,743 INFO L85 PathProgramCache]: Analyzing trace with hash -623070940, now seen corresponding path program 9 times [2022-01-31 18:33:39,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:33:39,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [335789168] [2022-01-31 18:33:39,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:33:39,745 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:33:39,745 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:33:39,746 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:33:39,746 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:33:39,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:39,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:33:39,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:39,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-01-31 18:33:39,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:39,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 18:33:39,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:39,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-01-31 18:33:39,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:39,860 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-01-31 18:33:39,860 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:33:39,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [335789168] [2022-01-31 18:33:39,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [335789168] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:33:39,860 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:33:39,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-01-31 18:33:39,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016127186] [2022-01-31 18:33:39,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:33:39,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-31 18:33:39,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:33:39,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-31 18:33:39,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2022-01-31 18:33:39,862 INFO L87 Difference]: Start difference. First operand 53 states and 59 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 12 states have internal predecessors, (39), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:33:40,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:33:40,020 INFO L93 Difference]: Finished difference Result 83 states and 95 transitions. [2022-01-31 18:33:40,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-31 18:33:40,021 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 12 states have internal predecessors, (39), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 78 [2022-01-31 18:33:40,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:33:40,023 INFO L225 Difference]: With dead ends: 83 [2022-01-31 18:33:40,023 INFO L226 Difference]: Without dead ends: 55 [2022-01-31 18:33:40,024 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2022-01-31 18:33:40,025 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 41 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:33:40,026 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 45 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:33:40,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-01-31 18:33:40,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2022-01-31 18:33:40,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 47 states have (on average 1.1063829787234043) internal successors, (52), 47 states have internal predecessors, (52), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:33:40,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 61 transitions. [2022-01-31 18:33:40,031 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 61 transitions. Word has length 78 [2022-01-31 18:33:40,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:33:40,032 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 61 transitions. [2022-01-31 18:33:40,032 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 12 states have internal predecessors, (39), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:33:40,032 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 61 transitions. [2022-01-31 18:33:40,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-01-31 18:33:40,033 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:33:40,033 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 6, 6, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:33:40,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-31 18:33:40,033 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:33:40,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:33:40,033 INFO L85 PathProgramCache]: Analyzing trace with hash 155466214, now seen corresponding path program 10 times [2022-01-31 18:33:40,034 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:33:40,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1245015550] [2022-01-31 18:33:40,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:33:40,036 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:33:40,036 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:33:40,036 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:33:40,038 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:33:40,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:40,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:33:40,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:40,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 18:33:40,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:40,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-01-31 18:33:40,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:40,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-01-31 18:33:40,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:40,110 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-01-31 18:33:40,110 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:33:40,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1245015550] [2022-01-31 18:33:40,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1245015550] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:33:40,110 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:33:40,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-31 18:33:40,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616688224] [2022-01-31 18:33:40,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:33:40,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-31 18:33:40,111 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:33:40,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-31 18:33:40,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-31 18:33:40,111 INFO L87 Difference]: Start difference. First operand 55 states and 61 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:33:40,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:33:40,175 INFO L93 Difference]: Finished difference Result 89 states and 105 transitions. [2022-01-31 18:33:40,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-31 18:33:40,176 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 80 [2022-01-31 18:33:40,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:33:40,176 INFO L225 Difference]: With dead ends: 89 [2022-01-31 18:33:40,177 INFO L226 Difference]: Without dead ends: 62 [2022-01-31 18:33:40,177 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-01-31 18:33:40,178 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 47 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 18:33:40,178 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 39 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 18:33:40,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-01-31 18:33:40,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 59. [2022-01-31 18:33:40,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 51 states have (on average 1.1176470588235294) internal successors, (57), 51 states have internal predecessors, (57), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:33:40,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 66 transitions. [2022-01-31 18:33:40,183 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 66 transitions. Word has length 80 [2022-01-31 18:33:40,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:33:40,183 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 66 transitions. [2022-01-31 18:33:40,183 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:33:40,183 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 66 transitions. [2022-01-31 18:33:40,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-01-31 18:33:40,183 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:33:40,184 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:33:40,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-31 18:33:40,184 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:33:40,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:33:40,184 INFO L85 PathProgramCache]: Analyzing trace with hash -2051686207, now seen corresponding path program 11 times [2022-01-31 18:33:40,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:33:40,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [929663706] [2022-01-31 18:33:40,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:33:40,187 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:33:40,187 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:33:40,187 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:33:40,188 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:33:40,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:40,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:33:40,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:40,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 18:33:40,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:40,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-01-31 18:33:40,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:40,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-01-31 18:33:40,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:40,261 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-01-31 18:33:40,261 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:33:40,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [929663706] [2022-01-31 18:33:40,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [929663706] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:33:40,261 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:33:40,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-31 18:33:40,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003566915] [2022-01-31 18:33:40,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:33:40,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-31 18:33:40,263 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:33:40,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-31 18:33:40,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-31 18:33:40,264 INFO L87 Difference]: Start difference. First operand 59 states and 66 transitions. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:33:40,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:33:40,338 INFO L93 Difference]: Finished difference Result 97 states and 115 transitions. [2022-01-31 18:33:40,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-31 18:33:40,339 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 92 [2022-01-31 18:33:40,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:33:40,339 INFO L225 Difference]: With dead ends: 97 [2022-01-31 18:33:40,339 INFO L226 Difference]: Without dead ends: 66 [2022-01-31 18:33:40,341 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2022-01-31 18:33:40,342 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 56 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 18:33:40,342 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 39 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 18:33:40,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2022-01-31 18:33:40,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 63. [2022-01-31 18:33:40,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 55 states have (on average 1.1272727272727272) internal successors, (62), 55 states have internal predecessors, (62), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:33:40,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 71 transitions. [2022-01-31 18:33:40,347 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 71 transitions. Word has length 92 [2022-01-31 18:33:40,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:33:40,348 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 71 transitions. [2022-01-31 18:33:40,348 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:33:40,348 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 71 transitions. [2022-01-31 18:33:40,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-01-31 18:33:40,349 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:33:40,349 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 10, 10, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:33:40,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-31 18:33:40,349 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:33:40,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:33:40,349 INFO L85 PathProgramCache]: Analyzing trace with hash -1269934308, now seen corresponding path program 12 times [2022-01-31 18:33:40,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:33:40,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1029543482] [2022-01-31 18:33:40,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:33:40,351 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:33:40,351 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:33:40,351 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:33:40,352 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:33:40,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:40,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:33:40,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:40,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 18:33:40,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:40,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 18:33:40,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:40,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-01-31 18:33:40,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:40,435 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-01-31 18:33:40,435 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:33:40,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1029543482] [2022-01-31 18:33:40,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1029543482] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:33:40,435 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:33:40,435 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-31 18:33:40,435 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875134389] [2022-01-31 18:33:40,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:33:40,436 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-31 18:33:40,436 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:33:40,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-31 18:33:40,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-31 18:33:40,436 INFO L87 Difference]: Start difference. First operand 63 states and 71 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:33:40,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:33:40,525 INFO L93 Difference]: Finished difference Result 105 states and 125 transitions. [2022-01-31 18:33:40,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-31 18:33:40,525 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 104 [2022-01-31 18:33:40,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:33:40,528 INFO L225 Difference]: With dead ends: 105 [2022-01-31 18:33:40,528 INFO L226 Difference]: Without dead ends: 70 [2022-01-31 18:33:40,528 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2022-01-31 18:33:40,529 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 66 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:33:40,529 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 39 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:33:40,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-01-31 18:33:40,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 67. [2022-01-31 18:33:40,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 59 states have (on average 1.1355932203389831) internal successors, (67), 59 states have internal predecessors, (67), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:33:40,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 76 transitions. [2022-01-31 18:33:40,536 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 76 transitions. Word has length 104 [2022-01-31 18:33:40,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:33:40,536 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 76 transitions. [2022-01-31 18:33:40,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:33:40,536 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 76 transitions. [2022-01-31 18:33:40,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-01-31 18:33:40,536 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:33:40,537 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 10, 10, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:33:40,537 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-31 18:33:40,537 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:33:40,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:33:40,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1297988855, now seen corresponding path program 13 times [2022-01-31 18:33:40,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:33:40,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1954132096] [2022-01-31 18:33:40,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:33:40,540 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:33:40,540 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:33:40,540 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:33:40,541 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:33:40,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:40,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:33:40,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:40,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 18:33:40,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:40,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-01-31 18:33:40,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:40,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-31 18:33:40,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:40,636 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 18:33:40,636 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:33:40,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1954132096] [2022-01-31 18:33:40,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1954132096] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:33:40,637 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:33:40,637 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-31 18:33:40,637 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714333129] [2022-01-31 18:33:40,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:33:40,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-31 18:33:40,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:33:40,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-31 18:33:40,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-01-31 18:33:40,638 INFO L87 Difference]: Start difference. First operand 67 states and 76 transitions. Second operand has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 8 states have internal predecessors, (47), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:33:40,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:33:40,747 INFO L93 Difference]: Finished difference Result 113 states and 135 transitions. [2022-01-31 18:33:40,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-31 18:33:40,754 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 8 states have internal predecessors, (47), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 116 [2022-01-31 18:33:40,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:33:40,754 INFO L225 Difference]: With dead ends: 113 [2022-01-31 18:33:40,754 INFO L226 Difference]: Without dead ends: 74 [2022-01-31 18:33:40,755 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2022-01-31 18:33:40,755 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 74 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:33:40,755 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 44 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:33:40,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-01-31 18:33:40,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 71. [2022-01-31 18:33:40,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 63 states have (on average 1.1428571428571428) internal successors, (72), 63 states have internal predecessors, (72), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:33:40,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 81 transitions. [2022-01-31 18:33:40,761 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 81 transitions. Word has length 116 [2022-01-31 18:33:40,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:33:40,761 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 81 transitions. [2022-01-31 18:33:40,761 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 8 states have internal predecessors, (47), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:33:40,761 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 81 transitions. [2022-01-31 18:33:40,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-01-31 18:33:40,762 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:33:40,762 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 10, 10, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:33:40,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-31 18:33:40,762 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:33:40,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:33:40,762 INFO L85 PathProgramCache]: Analyzing trace with hash -2028752302, now seen corresponding path program 14 times [2022-01-31 18:33:40,762 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:33:40,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1394824606] [2022-01-31 18:33:40,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:33:40,764 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:33:40,764 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:33:40,764 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:33:40,765 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:33:40,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:40,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:33:40,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:40,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 18:33:40,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:40,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-01-31 18:33:40,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:40,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-31 18:33:40,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:40,860 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-01-31 18:33:40,860 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:33:40,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1394824606] [2022-01-31 18:33:40,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1394824606] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:33:40,860 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:33:40,861 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-31 18:33:40,861 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113810468] [2022-01-31 18:33:40,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:33:40,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-31 18:33:40,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:33:40,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-31 18:33:40,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2022-01-31 18:33:40,862 INFO L87 Difference]: Start difference. First operand 71 states and 81 transitions. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 9 states have internal predecessors, (51), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:33:40,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:33:40,986 INFO L93 Difference]: Finished difference Result 121 states and 145 transitions. [2022-01-31 18:33:40,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-31 18:33:40,986 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 9 states have internal predecessors, (51), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 128 [2022-01-31 18:33:40,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:33:40,987 INFO L225 Difference]: With dead ends: 121 [2022-01-31 18:33:40,987 INFO L226 Difference]: Without dead ends: 78 [2022-01-31 18:33:40,988 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2022-01-31 18:33:40,988 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 88 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:33:40,988 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 39 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:33:40,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-01-31 18:33:40,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 75. [2022-01-31 18:33:40,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 67 states have (on average 1.1492537313432836) internal successors, (77), 67 states have internal predecessors, (77), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:33:40,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 86 transitions. [2022-01-31 18:33:40,997 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 86 transitions. Word has length 128 [2022-01-31 18:33:40,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:33:40,997 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 86 transitions. [2022-01-31 18:33:40,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 9 states have internal predecessors, (51), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:33:40,998 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 86 transitions. [2022-01-31 18:33:40,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-01-31 18:33:40,999 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:33:40,999 INFO L514 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 10, 10, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:33:40,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-31 18:33:40,999 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:33:40,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:33:41,000 INFO L85 PathProgramCache]: Analyzing trace with hash -2055211219, now seen corresponding path program 15 times [2022-01-31 18:33:41,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:33:41,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1071461484] [2022-01-31 18:33:41,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:33:41,002 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:33:41,002 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:33:41,002 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:33:41,003 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:33:41,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:41,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:33:41,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:41,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 18:33:41,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:41,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-01-31 18:33:41,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:41,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-01-31 18:33:41,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:41,109 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-01-31 18:33:41,109 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:33:41,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1071461484] [2022-01-31 18:33:41,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1071461484] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:33:41,109 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:33:41,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-31 18:33:41,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085836587] [2022-01-31 18:33:41,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:33:41,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-31 18:33:41,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:33:41,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-31 18:33:41,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2022-01-31 18:33:41,110 INFO L87 Difference]: Start difference. First operand 75 states and 86 transitions. Second operand has 11 states, 11 states have (on average 5.0) internal successors, (55), 10 states have internal predecessors, (55), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:33:41,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:33:41,251 INFO L93 Difference]: Finished difference Result 129 states and 155 transitions. [2022-01-31 18:33:41,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-31 18:33:41,251 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 10 states have internal predecessors, (55), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 140 [2022-01-31 18:33:41,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:33:41,252 INFO L225 Difference]: With dead ends: 129 [2022-01-31 18:33:41,252 INFO L226 Difference]: Without dead ends: 82 [2022-01-31 18:33:41,252 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=135, Invalid=207, Unknown=0, NotChecked=0, Total=342 [2022-01-31 18:33:41,253 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 92 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:33:41,253 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 49 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:33:41,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2022-01-31 18:33:41,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 79. [2022-01-31 18:33:41,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 71 states have (on average 1.1549295774647887) internal successors, (82), 71 states have internal predecessors, (82), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:33:41,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 91 transitions. [2022-01-31 18:33:41,260 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 91 transitions. Word has length 140 [2022-01-31 18:33:41,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:33:41,260 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 91 transitions. [2022-01-31 18:33:41,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 10 states have internal predecessors, (55), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:33:41,261 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 91 transitions. [2022-01-31 18:33:41,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-01-31 18:33:41,262 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:33:41,262 INFO L514 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 10, 10, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:33:41,262 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-31 18:33:41,262 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:33:41,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:33:41,262 INFO L85 PathProgramCache]: Analyzing trace with hash -896382072, now seen corresponding path program 16 times [2022-01-31 18:33:41,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:33:41,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [769039323] [2022-01-31 18:33:41,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:33:41,264 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:33:41,264 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:33:41,264 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:33:41,266 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:33:41,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:41,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:33:41,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:41,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 18:33:41,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:41,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-01-31 18:33:41,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:41,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-01-31 18:33:41,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:41,364 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-01-31 18:33:41,364 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:33:41,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [769039323] [2022-01-31 18:33:41,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [769039323] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:33:41,364 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:33:41,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-01-31 18:33:41,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408268318] [2022-01-31 18:33:41,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:33:41,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-31 18:33:41,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:33:41,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-31 18:33:41,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2022-01-31 18:33:41,365 INFO L87 Difference]: Start difference. First operand 79 states and 91 transitions. Second operand has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 11 states have internal predecessors, (59), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:33:41,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:33:41,514 INFO L93 Difference]: Finished difference Result 137 states and 165 transitions. [2022-01-31 18:33:41,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-31 18:33:41,514 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 11 states have internal predecessors, (59), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 152 [2022-01-31 18:33:41,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:33:41,514 INFO L225 Difference]: With dead ends: 137 [2022-01-31 18:33:41,515 INFO L226 Difference]: Without dead ends: 86 [2022-01-31 18:33:41,515 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420 [2022-01-31 18:33:41,517 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 107 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:33:41,517 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 39 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:33:41,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2022-01-31 18:33:41,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 83. [2022-01-31 18:33:41,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 75 states have (on average 1.16) internal successors, (87), 75 states have internal predecessors, (87), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:33:41,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 96 transitions. [2022-01-31 18:33:41,534 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 96 transitions. Word has length 152 [2022-01-31 18:33:41,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:33:41,534 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 96 transitions. [2022-01-31 18:33:41,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 11 states have internal predecessors, (59), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:33:41,534 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 96 transitions. [2022-01-31 18:33:41,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-01-31 18:33:41,535 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:33:41,535 INFO L514 BasicCegarLoop]: trace histogram [27, 27, 27, 27, 10, 10, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:33:41,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-31 18:33:41,535 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:33:41,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:33:41,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1508216989, now seen corresponding path program 17 times [2022-01-31 18:33:41,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:33:41,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1618232963] [2022-01-31 18:33:41,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:33:41,537 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:33:41,537 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:33:41,537 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:33:41,538 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:33:41,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:41,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:33:41,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:41,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 18:33:41,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:41,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-01-31 18:33:41,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:41,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-01-31 18:33:41,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:41,655 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-01-31 18:33:41,655 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:33:41,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1618232963] [2022-01-31 18:33:41,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1618232963] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:33:41,655 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:33:41,655 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-01-31 18:33:41,655 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888434255] [2022-01-31 18:33:41,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:33:41,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-31 18:33:41,656 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:33:41,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-31 18:33:41,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2022-01-31 18:33:41,656 INFO L87 Difference]: Start difference. First operand 83 states and 96 transitions. Second operand has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 12 states have internal predecessors, (63), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:33:41,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:33:41,804 INFO L93 Difference]: Finished difference Result 142 states and 171 transitions. [2022-01-31 18:33:41,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-31 18:33:41,805 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 12 states have internal predecessors, (63), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 164 [2022-01-31 18:33:41,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:33:41,805 INFO L225 Difference]: With dead ends: 142 [2022-01-31 18:33:41,805 INFO L226 Difference]: Without dead ends: 87 [2022-01-31 18:33:41,806 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2022-01-31 18:33:41,806 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 112 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:33:41,806 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 39 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:33:41,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2022-01-31 18:33:41,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2022-01-31 18:33:41,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 79 states have (on average 1.1645569620253164) internal successors, (92), 79 states have internal predecessors, (92), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:33:41,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 101 transitions. [2022-01-31 18:33:41,813 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 101 transitions. Word has length 164 [2022-01-31 18:33:41,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:33:41,813 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 101 transitions. [2022-01-31 18:33:41,813 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 12 states have internal predecessors, (63), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:33:41,813 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 101 transitions. [2022-01-31 18:33:41,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-31 18:33:41,814 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:33:41,814 INFO L514 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 10, 10, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:33:41,814 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-31 18:33:41,814 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:33:41,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:33:41,815 INFO L85 PathProgramCache]: Analyzing trace with hash -1513610562, now seen corresponding path program 18 times [2022-01-31 18:33:41,815 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:33:41,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2131370749] [2022-01-31 18:33:41,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:33:41,816 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:33:41,816 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:33:41,816 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:33:41,817 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:33:41,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:41,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:33:41,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:41,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 18:33:41,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:41,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-01-31 18:33:41,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:41,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:33:41,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:41,909 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2022-01-31 18:33:41,909 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:33:41,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2131370749] [2022-01-31 18:33:41,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2131370749] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:33:41,909 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:33:41,909 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-31 18:33:41,909 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774532499] [2022-01-31 18:33:41,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:33:41,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-31 18:33:41,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:33:41,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-31 18:33:41,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-31 18:33:41,910 INFO L87 Difference]: Start difference. First operand 87 states and 101 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:33:41,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:33:41,959 INFO L93 Difference]: Finished difference Result 141 states and 166 transitions. [2022-01-31 18:33:41,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-31 18:33:41,960 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 176 [2022-01-31 18:33:41,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:33:41,960 INFO L225 Difference]: With dead ends: 141 [2022-01-31 18:33:41,960 INFO L226 Difference]: Without dead ends: 90 [2022-01-31 18:33:41,961 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-01-31 18:33:41,963 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 28 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 18:33:41,963 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 40 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 18:33:41,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2022-01-31 18:33:41,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 89. [2022-01-31 18:33:41,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 81 states have (on average 1.1604938271604939) internal successors, (94), 81 states have internal predecessors, (94), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:33:41,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 103 transitions. [2022-01-31 18:33:41,971 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 103 transitions. Word has length 176 [2022-01-31 18:33:41,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:33:41,971 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 103 transitions. [2022-01-31 18:33:41,971 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:33:41,971 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 103 transitions. [2022-01-31 18:33:41,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-01-31 18:33:41,972 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:33:41,972 INFO L514 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 10, 10, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:33:41,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-31 18:33:41,973 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:33:41,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:33:41,973 INFO L85 PathProgramCache]: Analyzing trace with hash -1145319396, now seen corresponding path program 19 times [2022-01-31 18:33:41,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:33:41,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [404806043] [2022-01-31 18:33:41,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:33:41,975 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:33:41,975 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:33:41,975 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:33:41,976 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:33:41,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:42,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:33:42,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:42,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 18:33:42,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:42,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-01-31 18:33:42,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:42,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-01-31 18:33:42,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:42,087 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2022-01-31 18:33:42,088 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:33:42,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [404806043] [2022-01-31 18:33:42,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [404806043] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:33:42,088 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:33:42,088 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-31 18:33:42,088 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550080406] [2022-01-31 18:33:42,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:33:42,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-31 18:33:42,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:33:42,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-31 18:33:42,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-31 18:33:42,089 INFO L87 Difference]: Start difference. First operand 89 states and 103 transitions. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:33:42,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:33:42,160 INFO L93 Difference]: Finished difference Result 143 states and 168 transitions. [2022-01-31 18:33:42,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-31 18:33:42,160 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 178 [2022-01-31 18:33:42,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:33:42,161 INFO L225 Difference]: With dead ends: 143 [2022-01-31 18:33:42,161 INFO L226 Difference]: Without dead ends: 92 [2022-01-31 18:33:42,161 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2022-01-31 18:33:42,161 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 30 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 18:33:42,162 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 35 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 18:33:42,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2022-01-31 18:33:42,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 91. [2022-01-31 18:33:42,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 83 states have (on average 1.1566265060240963) internal successors, (96), 83 states have internal predecessors, (96), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:33:42,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 105 transitions. [2022-01-31 18:33:42,168 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 105 transitions. Word has length 178 [2022-01-31 18:33:42,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:33:42,169 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 105 transitions. [2022-01-31 18:33:42,169 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:33:42,169 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 105 transitions. [2022-01-31 18:33:42,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2022-01-31 18:33:42,170 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:33:42,170 INFO L514 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 10, 10, 4, 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] [2022-01-31 18:33:42,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-31 18:33:42,170 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:33:42,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:33:42,170 INFO L85 PathProgramCache]: Analyzing trace with hash 595172858, now seen corresponding path program 20 times [2022-01-31 18:33:42,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:33:42,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1534778202] [2022-01-31 18:33:42,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:33:42,172 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:33:42,172 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:33:42,172 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:33:42,173 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:33:42,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:42,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:33:42,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:42,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 18:33:42,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:42,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-01-31 18:33:42,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:42,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 18:33:42,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:42,262 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2022-01-31 18:33:42,262 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:33:42,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1534778202] [2022-01-31 18:33:42,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1534778202] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:33:42,262 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:33:42,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-31 18:33:42,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693426847] [2022-01-31 18:33:42,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:33:42,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-31 18:33:42,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:33:42,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-31 18:33:42,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-31 18:33:42,263 INFO L87 Difference]: Start difference. First operand 91 states and 105 transitions. Second operand has 8 states, 8 states have (on average 3.625) internal successors, (29), 7 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:33:42,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:33:42,368 INFO L93 Difference]: Finished difference Result 145 states and 170 transitions. [2022-01-31 18:33:42,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-31 18:33:42,369 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 7 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 180 [2022-01-31 18:33:42,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:33:42,369 INFO L225 Difference]: With dead ends: 145 [2022-01-31 18:33:42,369 INFO L226 Difference]: Without dead ends: 94 [2022-01-31 18:33:42,370 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2022-01-31 18:33:42,370 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 32 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:33:42,371 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 45 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:33:42,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-01-31 18:33:42,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 93. [2022-01-31 18:33:42,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 85 states have (on average 1.1529411764705881) internal successors, (98), 85 states have internal predecessors, (98), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:33:42,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 107 transitions. [2022-01-31 18:33:42,378 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 107 transitions. Word has length 180 [2022-01-31 18:33:42,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:33:42,378 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 107 transitions. [2022-01-31 18:33:42,378 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 7 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:33:42,378 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 107 transitions. [2022-01-31 18:33:42,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-01-31 18:33:42,379 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:33:42,379 INFO L514 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 10, 10, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:33:42,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-31 18:33:42,379 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:33:42,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:33:42,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1829016488, now seen corresponding path program 21 times [2022-01-31 18:33:42,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:33:42,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [440194173] [2022-01-31 18:33:42,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:33:42,383 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:33:42,383 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:33:42,383 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:33:42,385 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:33:42,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:42,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:33:42,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:42,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 18:33:42,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:42,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-01-31 18:33:42,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:42,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-01-31 18:33:42,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:42,485 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2022-01-31 18:33:42,485 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:33:42,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [440194173] [2022-01-31 18:33:42,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [440194173] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:33:42,485 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:33:42,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-31 18:33:42,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142193566] [2022-01-31 18:33:42,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:33:42,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-31 18:33:42,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:33:42,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-31 18:33:42,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-01-31 18:33:42,486 INFO L87 Difference]: Start difference. First operand 93 states and 107 transitions. Second operand has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 8 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:33:42,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:33:42,591 INFO L93 Difference]: Finished difference Result 147 states and 172 transitions. [2022-01-31 18:33:42,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-31 18:33:42,591 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 8 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 182 [2022-01-31 18:33:42,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:33:42,592 INFO L225 Difference]: With dead ends: 147 [2022-01-31 18:33:42,592 INFO L226 Difference]: Without dead ends: 96 [2022-01-31 18:33:42,592 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2022-01-31 18:33:42,593 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 34 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:33:42,596 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 45 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:33:42,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2022-01-31 18:33:42,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 95. [2022-01-31 18:33:42,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 87 states have (on average 1.1494252873563218) internal successors, (100), 87 states have internal predecessors, (100), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:33:42,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 109 transitions. [2022-01-31 18:33:42,603 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 109 transitions. Word has length 182 [2022-01-31 18:33:42,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:33:42,604 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 109 transitions. [2022-01-31 18:33:42,604 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 8 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:33:42,604 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 109 transitions. [2022-01-31 18:33:42,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2022-01-31 18:33:42,605 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:33:42,605 INFO L514 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 10, 10, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:33:42,605 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-31 18:33:42,605 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:33:42,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:33:42,605 INFO L85 PathProgramCache]: Analyzing trace with hash 692263734, now seen corresponding path program 22 times [2022-01-31 18:33:42,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:33:42,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1902422871] [2022-01-31 18:33:42,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:33:42,607 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:33:42,607 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:33:42,607 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:33:42,609 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:33:42,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:42,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:33:42,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:42,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 18:33:42,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:42,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-01-31 18:33:42,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:42,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-01-31 18:33:42,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:42,743 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2022-01-31 18:33:42,744 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:33:42,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1902422871] [2022-01-31 18:33:42,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1902422871] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:33:42,744 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:33:42,744 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-31 18:33:42,744 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936338262] [2022-01-31 18:33:42,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:33:42,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-31 18:33:42,745 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:33:42,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-31 18:33:42,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2022-01-31 18:33:42,746 INFO L87 Difference]: Start difference. First operand 95 states and 109 transitions. Second operand has 10 states, 10 states have (on average 3.3) internal successors, (33), 9 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:33:42,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:33:42,850 INFO L93 Difference]: Finished difference Result 149 states and 174 transitions. [2022-01-31 18:33:42,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-31 18:33:42,851 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 9 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 184 [2022-01-31 18:33:42,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:33:42,852 INFO L225 Difference]: With dead ends: 149 [2022-01-31 18:33:42,852 INFO L226 Difference]: Without dead ends: 98 [2022-01-31 18:33:42,852 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2022-01-31 18:33:42,852 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 36 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 18:33:42,853 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 40 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 18:33:42,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2022-01-31 18:33:42,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 97. [2022-01-31 18:33:42,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 89 states have (on average 1.146067415730337) internal successors, (102), 89 states have internal predecessors, (102), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:33:42,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 111 transitions. [2022-01-31 18:33:42,862 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 111 transitions. Word has length 184 [2022-01-31 18:33:42,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:33:42,863 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 111 transitions. [2022-01-31 18:33:42,863 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 9 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:33:42,863 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 111 transitions. [2022-01-31 18:33:42,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2022-01-31 18:33:42,864 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:33:42,864 INFO L514 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 10, 10, 7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:33:42,864 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-31 18:33:42,864 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:33:42,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:33:42,865 INFO L85 PathProgramCache]: Analyzing trace with hash 1281002132, now seen corresponding path program 23 times [2022-01-31 18:33:42,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:33:42,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1850013223] [2022-01-31 18:33:42,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:33:42,866 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:33:42,866 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:33:42,867 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:33:42,868 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:33:42,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:42,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:33:42,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:42,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 18:33:42,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:42,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-01-31 18:33:42,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:42,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-01-31 18:33:42,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:42,967 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2022-01-31 18:33:42,967 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:33:42,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1850013223] [2022-01-31 18:33:42,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1850013223] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:33:42,967 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:33:42,967 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-31 18:33:42,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183623062] [2022-01-31 18:33:42,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:33:42,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-31 18:33:42,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:33:42,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-31 18:33:42,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2022-01-31 18:33:42,969 INFO L87 Difference]: Start difference. First operand 97 states and 111 transitions. Second operand has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 10 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:33:43,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:33:43,077 INFO L93 Difference]: Finished difference Result 151 states and 176 transitions. [2022-01-31 18:33:43,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-31 18:33:43,077 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 10 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 186 [2022-01-31 18:33:43,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:33:43,078 INFO L225 Difference]: With dead ends: 151 [2022-01-31 18:33:43,078 INFO L226 Difference]: Without dead ends: 100 [2022-01-31 18:33:43,078 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=135, Invalid=207, Unknown=0, NotChecked=0, Total=342 [2022-01-31 18:33:43,078 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 38 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:33:43,079 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 45 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:33:43,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-01-31 18:33:43,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 99. [2022-01-31 18:33:43,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 91 states have (on average 1.1428571428571428) internal successors, (104), 91 states have internal predecessors, (104), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:33:43,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 113 transitions. [2022-01-31 18:33:43,086 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 113 transitions. Word has length 186 [2022-01-31 18:33:43,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:33:43,087 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 113 transitions. [2022-01-31 18:33:43,087 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 10 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:33:43,087 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 113 transitions. [2022-01-31 18:33:43,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-01-31 18:33:43,088 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:33:43,088 INFO L514 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 10, 10, 8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:33:43,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-31 18:33:43,088 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:33:43,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:33:43,088 INFO L85 PathProgramCache]: Analyzing trace with hash 122919538, now seen corresponding path program 24 times [2022-01-31 18:33:43,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:33:43,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1429143106] [2022-01-31 18:33:43,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:33:43,090 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:33:43,090 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:33:43,090 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:33:43,091 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:33:43,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:43,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:33:43,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:43,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 18:33:43,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:43,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-01-31 18:33:43,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:43,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 18:33:43,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:43,188 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2022-01-31 18:33:43,189 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:33:43,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1429143106] [2022-01-31 18:33:43,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1429143106] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:33:43,189 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:33:43,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-01-31 18:33:43,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144400263] [2022-01-31 18:33:43,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:33:43,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-31 18:33:43,189 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:33:43,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-31 18:33:43,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2022-01-31 18:33:43,190 INFO L87 Difference]: Start difference. First operand 99 states and 113 transitions. Second operand has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 11 states have internal predecessors, (37), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:33:43,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:33:43,309 INFO L93 Difference]: Finished difference Result 152 states and 177 transitions. [2022-01-31 18:33:43,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-31 18:33:43,309 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 11 states have internal predecessors, (37), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 188 [2022-01-31 18:33:43,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:33:43,310 INFO L225 Difference]: With dead ends: 152 [2022-01-31 18:33:43,310 INFO L226 Difference]: Without dead ends: 101 [2022-01-31 18:33:43,310 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420 [2022-01-31 18:33:43,311 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 39 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:33:43,311 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 50 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:33:43,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2022-01-31 18:33:43,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2022-01-31 18:33:43,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 93 states have (on average 1.1397849462365592) internal successors, (106), 93 states have internal predecessors, (106), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:33:43,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 115 transitions. [2022-01-31 18:33:43,318 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 115 transitions. Word has length 188 [2022-01-31 18:33:43,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:33:43,319 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 115 transitions. [2022-01-31 18:33:43,319 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 11 states have internal predecessors, (37), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:33:43,319 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 115 transitions. [2022-01-31 18:33:43,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-31 18:33:43,320 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:33:43,320 INFO L514 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 10, 10, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:33:43,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-01-31 18:33:43,320 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:33:43,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:33:43,320 INFO L85 PathProgramCache]: Analyzing trace with hash -397923632, now seen corresponding path program 25 times [2022-01-31 18:33:43,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:33:43,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [601521757] [2022-01-31 18:33:43,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:33:43,322 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:33:43,322 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:33:43,322 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:33:43,323 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:33:43,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:43,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:33:43,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:43,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 18:33:43,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:43,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-01-31 18:33:43,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:43,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-31 18:33:43,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:43,855 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 88 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-01-31 18:33:43,855 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:33:43,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [601521757] [2022-01-31 18:33:43,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [601521757] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:33:43,856 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:33:43,856 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-01-31 18:33:43,856 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593470113] [2022-01-31 18:33:43,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:33:43,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-31 18:33:43,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:33:43,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-31 18:33:43,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2022-01-31 18:33:43,857 INFO L87 Difference]: Start difference. First operand 101 states and 115 transitions. Second operand has 17 states, 16 states have (on average 2.875) internal successors, (46), 15 states have internal predecessors, (46), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:33:44,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:33:44,265 INFO L93 Difference]: Finished difference Result 221 states and 258 transitions. [2022-01-31 18:33:44,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-31 18:33:44,265 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.875) internal successors, (46), 15 states have internal predecessors, (46), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 190 [2022-01-31 18:33:44,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:33:44,266 INFO L225 Difference]: With dead ends: 221 [2022-01-31 18:33:44,266 INFO L226 Difference]: Without dead ends: 150 [2022-01-31 18:33:44,267 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=139, Invalid=853, Unknown=0, NotChecked=0, Total=992 [2022-01-31 18:33:44,267 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 72 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 413 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:33:44,267 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 62 Invalid, 448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 413 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 18:33:44,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2022-01-31 18:33:44,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 141. [2022-01-31 18:33:44,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 131 states have (on average 1.16793893129771) internal successors, (153), 132 states have internal predecessors, (153), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2022-01-31 18:33:44,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 167 transitions. [2022-01-31 18:33:44,284 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 167 transitions. Word has length 190 [2022-01-31 18:33:44,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:33:44,284 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 167 transitions. [2022-01-31 18:33:44,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.875) internal successors, (46), 15 states have internal predecessors, (46), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:33:44,285 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 167 transitions. [2022-01-31 18:33:44,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-31 18:33:44,286 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:33:44,286 INFO L514 BasicCegarLoop]: trace histogram [30, 30, 30, 29, 10, 10, 9, 9, 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] [2022-01-31 18:33:44,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-01-31 18:33:44,286 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:33:44,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:33:44,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1436508206, now seen corresponding path program 1 times [2022-01-31 18:33:44,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:33:44,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1692522456] [2022-01-31 18:33:44,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:33:44,288 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:33:44,288 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:33:44,288 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:33:44,289 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:33:44,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:45,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:33:45,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:45,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 18:33:45,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:45,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-01-31 18:33:45,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:45,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-31 18:33:45,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:46,824 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 6 proven. 40 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-01-31 18:33:46,824 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:33:46,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1692522456] [2022-01-31 18:33:46,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1692522456] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:33:46,824 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:33:46,824 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [68] imperfect sequences [] total 68 [2022-01-31 18:33:46,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924045552] [2022-01-31 18:33:46,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:33:46,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2022-01-31 18:33:46,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:33:46,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2022-01-31 18:33:46,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=4347, Unknown=0, NotChecked=0, Total=4556 [2022-01-31 18:33:46,827 INFO L87 Difference]: Start difference. First operand 141 states and 167 transitions. Second operand has 68 states, 67 states have (on average 1.7164179104477613) internal successors, (115), 66 states have internal predecessors, (115), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:33:50,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:33:50,947 INFO L93 Difference]: Finished difference Result 335 states and 415 transitions. [2022-01-31 18:33:50,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-01-31 18:33:50,953 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 67 states have (on average 1.7164179104477613) internal successors, (115), 66 states have internal predecessors, (115), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 190 [2022-01-31 18:33:50,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:33:50,956 INFO L225 Difference]: With dead ends: 335 [2022-01-31 18:33:50,956 INFO L226 Difference]: Without dead ends: 331 [2022-01-31 18:33:50,962 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5266 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=832, Invalid=17800, Unknown=0, NotChecked=0, Total=18632 [2022-01-31 18:33:50,963 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 180 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 5428 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 5541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 5428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:33:50,963 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [180 Valid, 227 Invalid, 5541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 5428 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-01-31 18:33:50,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2022-01-31 18:33:51,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 297. [2022-01-31 18:33:51,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 280 states have (on average 1.1964285714285714) internal successors, (335), 285 states have internal predecessors, (335), 9 states have call successors, (9), 3 states have call predecessors, (9), 7 states have return successors, (35), 8 states have call predecessors, (35), 8 states have call successors, (35) [2022-01-31 18:33:51,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 379 transitions. [2022-01-31 18:33:51,009 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 379 transitions. Word has length 190 [2022-01-31 18:33:51,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:33:51,009 INFO L470 AbstractCegarLoop]: Abstraction has 297 states and 379 transitions. [2022-01-31 18:33:51,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 67 states have (on average 1.7164179104477613) internal successors, (115), 66 states have internal predecessors, (115), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:33:51,009 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 379 transitions. [2022-01-31 18:33:51,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-31 18:33:51,011 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:33:51,012 INFO L514 BasicCegarLoop]: trace histogram [30, 30, 30, 28, 10, 10, 9, 9, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:33:51,012 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-01-31 18:33:51,012 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:33:51,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:33:51,012 INFO L85 PathProgramCache]: Analyzing trace with hash -1829535216, now seen corresponding path program 2 times [2022-01-31 18:33:51,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:33:51,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2116881516] [2022-01-31 18:33:51,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:33:51,014 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:33:51,014 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:33:51,014 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:33:51,016 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:33:51,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:52,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:33:52,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:52,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 18:33:52,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:54,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-01-31 18:33:54,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:55,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-31 18:33:55,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:33:55,858 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-31 18:33:55,858 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:33:55,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2116881516] [2022-01-31 18:33:55,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2116881516] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:33:55,858 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:33:55,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [93] imperfect sequences [] total 93 [2022-01-31 18:33:55,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327821606] [2022-01-31 18:33:55,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:33:55,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 93 states [2022-01-31 18:33:55,859 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:33:55,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2022-01-31 18:33:55,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=275, Invalid=8281, Unknown=0, NotChecked=0, Total=8556 [2022-01-31 18:33:55,861 INFO L87 Difference]: Start difference. First operand 297 states and 379 transitions. Second operand has 93 states, 92 states have (on average 1.6195652173913044) internal successors, (149), 89 states have internal predecessors, (149), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:34:02,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:34:02,847 INFO L93 Difference]: Finished difference Result 526 states and 718 transitions. [2022-01-31 18:34:02,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2022-01-31 18:34:02,847 INFO L78 Accepts]: Start accepts. Automaton has has 93 states, 92 states have (on average 1.6195652173913044) internal successors, (149), 89 states have internal predecessors, (149), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 190 [2022-01-31 18:34:02,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:34:02,850 INFO L225 Difference]: With dead ends: 526 [2022-01-31 18:34:02,850 INFO L226 Difference]: Without dead ends: 522 [2022-01-31 18:34:02,856 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9744 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=1009, Invalid=34901, Unknown=0, NotChecked=0, Total=35910 [2022-01-31 18:34:02,857 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 230 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 8535 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 8674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 8535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-01-31 18:34:02,857 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [234 Valid, 309 Invalid, 8674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 8535 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-01-31 18:34:02,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2022-01-31 18:34:02,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 425. [2022-01-31 18:34:02,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 425 states, 398 states have (on average 1.2035175879396984) internal successors, (479), 411 states have internal predecessors, (479), 11 states have call successors, (11), 3 states have call predecessors, (11), 15 states have return successors, (97), 10 states have call predecessors, (97), 10 states have call successors, (97) [2022-01-31 18:34:02,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 587 transitions. [2022-01-31 18:34:02,924 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 587 transitions. Word has length 190 [2022-01-31 18:34:02,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:34:02,924 INFO L470 AbstractCegarLoop]: Abstraction has 425 states and 587 transitions. [2022-01-31 18:34:02,925 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 93 states, 92 states have (on average 1.6195652173913044) internal successors, (149), 89 states have internal predecessors, (149), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:34:02,925 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 587 transitions. [2022-01-31 18:34:02,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-31 18:34:02,928 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:34:02,928 INFO L514 BasicCegarLoop]: trace histogram [30, 30, 30, 28, 10, 10, 9, 9, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:34:02,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-01-31 18:34:02,929 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:34:02,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:34:02,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1847341840, now seen corresponding path program 3 times [2022-01-31 18:34:02,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:34:02,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1577483542] [2022-01-31 18:34:02,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:34:02,930 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:34:02,930 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:34:02,931 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:34:02,932 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:34:02,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:03,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:34:03,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:03,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 18:34:03,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:03,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-01-31 18:34:03,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:03,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-31 18:34:03,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:05,214 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-01-31 18:34:05,214 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:34:05,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1577483542] [2022-01-31 18:34:05,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1577483542] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:34:05,215 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:34:05,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [66] imperfect sequences [] total 66 [2022-01-31 18:34:05,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850328987] [2022-01-31 18:34:05,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:34:05,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2022-01-31 18:34:05,215 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:34:05,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2022-01-31 18:34:05,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=4087, Unknown=0, NotChecked=0, Total=4290 [2022-01-31 18:34:05,216 INFO L87 Difference]: Start difference. First operand 425 states and 587 transitions. Second operand has 66 states, 65 states have (on average 1.7692307692307692) internal successors, (115), 64 states have internal predecessors, (115), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:34:08,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:34:08,837 INFO L93 Difference]: Finished difference Result 494 states and 680 transitions. [2022-01-31 18:34:08,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-01-31 18:34:08,837 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 65 states have (on average 1.7692307692307692) internal successors, (115), 64 states have internal predecessors, (115), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 190 [2022-01-31 18:34:08,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:34:08,841 INFO L225 Difference]: With dead ends: 494 [2022-01-31 18:34:08,841 INFO L226 Difference]: Without dead ends: 490 [2022-01-31 18:34:08,845 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4867 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=806, Invalid=16750, Unknown=0, NotChecked=0, Total=17556 [2022-01-31 18:34:08,845 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 190 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 4567 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 4678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 4567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-01-31 18:34:08,845 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [190 Valid, 154 Invalid, 4678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 4567 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-01-31 18:34:08,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2022-01-31 18:34:08,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 433. [2022-01-31 18:34:08,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 433 states, 406 states have (on average 1.2044334975369457) internal successors, (489), 419 states have internal predecessors, (489), 11 states have call successors, (11), 3 states have call predecessors, (11), 15 states have return successors, (97), 10 states have call predecessors, (97), 10 states have call successors, (97) [2022-01-31 18:34:08,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 597 transitions. [2022-01-31 18:34:08,936 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 597 transitions. Word has length 190 [2022-01-31 18:34:08,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:34:08,936 INFO L470 AbstractCegarLoop]: Abstraction has 433 states and 597 transitions. [2022-01-31 18:34:08,936 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 65 states have (on average 1.7692307692307692) internal successors, (115), 64 states have internal predecessors, (115), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:34:08,936 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 597 transitions. [2022-01-31 18:34:08,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-31 18:34:08,941 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:34:08,942 INFO L514 BasicCegarLoop]: trace histogram [30, 30, 30, 27, 10, 10, 9, 9, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:34:08,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-01-31 18:34:08,942 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:34:08,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:34:08,942 INFO L85 PathProgramCache]: Analyzing trace with hash 1454314830, now seen corresponding path program 4 times [2022-01-31 18:34:08,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:34:08,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [670087131] [2022-01-31 18:34:08,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:34:08,944 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:34:08,944 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:34:08,944 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:34:08,946 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:34:09,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:10,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:34:10,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:10,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 18:34:10,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:10,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-01-31 18:34:10,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:10,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-31 18:34:10,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:11,072 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 11 proven. 6 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-01-31 18:34:11,072 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:34:11,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [670087131] [2022-01-31 18:34:11,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [670087131] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:34:11,072 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:34:11,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [49] imperfect sequences [] total 49 [2022-01-31 18:34:11,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126658974] [2022-01-31 18:34:11,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:34:11,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-01-31 18:34:11,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:34:11,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-01-31 18:34:11,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=2211, Unknown=0, NotChecked=0, Total=2352 [2022-01-31 18:34:11,074 INFO L87 Difference]: Start difference. First operand 433 states and 597 transitions. Second operand has 49 states, 49 states have (on average 2.3877551020408165) internal successors, (117), 48 states have internal predecessors, (117), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:34:14,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:34:14,931 INFO L93 Difference]: Finished difference Result 986 states and 1517 transitions. [2022-01-31 18:34:14,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-01-31 18:34:14,932 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.3877551020408165) internal successors, (117), 48 states have internal predecessors, (117), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 190 [2022-01-31 18:34:14,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:34:14,937 INFO L225 Difference]: With dead ends: 986 [2022-01-31 18:34:14,937 INFO L226 Difference]: Without dead ends: 982 [2022-01-31 18:34:14,940 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 18 SyntacticMatches, 6 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4667 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=805, Invalid=14945, Unknown=0, NotChecked=0, Total=15750 [2022-01-31 18:34:14,941 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 167 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 4808 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 4928 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 4808 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-01-31 18:34:14,941 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [167 Valid, 161 Invalid, 4928 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 4808 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-01-31 18:34:14,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 982 states. [2022-01-31 18:34:15,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 982 to 924. [2022-01-31 18:34:15,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 924 states, 871 states have (on average 1.227324913892078) internal successors, (1069), 903 states have internal predecessors, (1069), 18 states have call successors, (18), 4 states have call predecessors, (18), 34 states have return successors, (328), 16 states have call predecessors, (328), 17 states have call successors, (328) [2022-01-31 18:34:15,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 924 states to 924 states and 1415 transitions. [2022-01-31 18:34:15,114 INFO L78 Accepts]: Start accepts. Automaton has 924 states and 1415 transitions. Word has length 190 [2022-01-31 18:34:15,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:34:15,114 INFO L470 AbstractCegarLoop]: Abstraction has 924 states and 1415 transitions. [2022-01-31 18:34:15,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.3877551020408165) internal successors, (117), 48 states have internal predecessors, (117), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:34:15,115 INFO L276 IsEmpty]: Start isEmpty. Operand 924 states and 1415 transitions. [2022-01-31 18:34:15,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-31 18:34:15,125 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:34:15,125 INFO L514 BasicCegarLoop]: trace histogram [30, 30, 30, 28, 10, 10, 9, 9, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:34:15,125 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-01-31 18:34:15,125 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:34:15,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:34:15,126 INFO L85 PathProgramCache]: Analyzing trace with hash 864314384, now seen corresponding path program 5 times [2022-01-31 18:34:15,126 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:34:15,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1953618631] [2022-01-31 18:34:15,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:34:15,127 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:34:15,127 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:34:15,127 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:34:15,128 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:34:15,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:15,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:34:15,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:15,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 18:34:15,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:16,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-01-31 18:34:16,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:16,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-31 18:34:16,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:17,382 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-01-31 18:34:17,382 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:34:17,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1953618631] [2022-01-31 18:34:17,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1953618631] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:34:17,395 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:34:17,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [66] imperfect sequences [] total 66 [2022-01-31 18:34:17,396 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644598613] [2022-01-31 18:34:17,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:34:17,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2022-01-31 18:34:17,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:34:17,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2022-01-31 18:34:17,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=4087, Unknown=0, NotChecked=0, Total=4290 [2022-01-31 18:34:17,397 INFO L87 Difference]: Start difference. First operand 924 states and 1415 transitions. Second operand has 66 states, 65 states have (on average 1.7692307692307692) internal successors, (115), 64 states have internal predecessors, (115), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:34:21,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:34:21,497 INFO L93 Difference]: Finished difference Result 1041 states and 1586 transitions. [2022-01-31 18:34:21,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-01-31 18:34:21,501 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 65 states have (on average 1.7692307692307692) internal successors, (115), 64 states have internal predecessors, (115), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 190 [2022-01-31 18:34:21,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:34:21,508 INFO L225 Difference]: With dead ends: 1041 [2022-01-31 18:34:21,508 INFO L226 Difference]: Without dead ends: 1037 [2022-01-31 18:34:21,511 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4862 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=806, Invalid=16750, Unknown=0, NotChecked=0, Total=17556 [2022-01-31 18:34:21,511 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 165 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 5571 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 5676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 5571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:34:21,511 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [165 Valid, 196 Invalid, 5676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 5571 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-01-31 18:34:21,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1037 states. [2022-01-31 18:34:21,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1037 to 940. [2022-01-31 18:34:21,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 940 states, 887 states have (on average 1.2277339346110485) internal successors, (1089), 919 states have internal predecessors, (1089), 18 states have call successors, (18), 4 states have call predecessors, (18), 34 states have return successors, (328), 16 states have call predecessors, (328), 17 states have call successors, (328) [2022-01-31 18:34:21,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 940 states to 940 states and 1435 transitions. [2022-01-31 18:34:21,716 INFO L78 Accepts]: Start accepts. Automaton has 940 states and 1435 transitions. Word has length 190 [2022-01-31 18:34:21,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:34:21,716 INFO L470 AbstractCegarLoop]: Abstraction has 940 states and 1435 transitions. [2022-01-31 18:34:21,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 65 states have (on average 1.7692307692307692) internal successors, (115), 64 states have internal predecessors, (115), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:34:21,716 INFO L276 IsEmpty]: Start isEmpty. Operand 940 states and 1435 transitions. [2022-01-31 18:34:21,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-31 18:34:21,725 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:34:21,725 INFO L514 BasicCegarLoop]: trace histogram [30, 30, 30, 27, 10, 10, 9, 9, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:34:21,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-01-31 18:34:21,725 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:34:21,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:34:21,725 INFO L85 PathProgramCache]: Analyzing trace with hash -146802866, now seen corresponding path program 6 times [2022-01-31 18:34:21,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:34:21,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [147405089] [2022-01-31 18:34:21,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:34:21,727 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:34:21,727 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:34:21,727 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:34:21,728 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:34:21,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:22,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:34:22,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:22,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 18:34:22,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:22,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-01-31 18:34:22,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:22,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-31 18:34:22,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:23,940 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-01-31 18:34:23,940 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:34:23,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [147405089] [2022-01-31 18:34:23,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [147405089] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:34:23,940 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:34:23,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [64] imperfect sequences [] total 64 [2022-01-31 18:34:23,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236668745] [2022-01-31 18:34:23,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:34:23,944 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-01-31 18:34:23,944 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:34:23,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-01-31 18:34:23,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=3835, Unknown=0, NotChecked=0, Total=4032 [2022-01-31 18:34:23,945 INFO L87 Difference]: Start difference. First operand 940 states and 1435 transitions. Second operand has 64 states, 63 states have (on average 1.8253968253968254) internal successors, (115), 62 states have internal predecessors, (115), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:34:27,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:34:27,836 INFO L93 Difference]: Finished difference Result 1041 states and 1586 transitions. [2022-01-31 18:34:27,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-01-31 18:34:27,836 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 63 states have (on average 1.8253968253968254) internal successors, (115), 62 states have internal predecessors, (115), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 190 [2022-01-31 18:34:27,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:34:27,841 INFO L225 Difference]: With dead ends: 1041 [2022-01-31 18:34:27,842 INFO L226 Difference]: Without dead ends: 1037 [2022-01-31 18:34:27,845 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4479 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=780, Invalid=15732, Unknown=0, NotChecked=0, Total=16512 [2022-01-31 18:34:27,845 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 165 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 5305 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 5407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 5305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-01-31 18:34:27,845 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [165 Valid, 206 Invalid, 5407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 5305 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-01-31 18:34:27,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1037 states. [2022-01-31 18:34:28,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1037 to 956. [2022-01-31 18:34:28,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 956 states, 903 states have (on average 1.2281284606866003) internal successors, (1109), 935 states have internal predecessors, (1109), 18 states have call successors, (18), 4 states have call predecessors, (18), 34 states have return successors, (328), 16 states have call predecessors, (328), 17 states have call successors, (328) [2022-01-31 18:34:28,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 956 states to 956 states and 1455 transitions. [2022-01-31 18:34:28,076 INFO L78 Accepts]: Start accepts. Automaton has 956 states and 1455 transitions. Word has length 190 [2022-01-31 18:34:28,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:34:28,076 INFO L470 AbstractCegarLoop]: Abstraction has 956 states and 1455 transitions. [2022-01-31 18:34:28,076 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 63 states have (on average 1.8253968253968254) internal successors, (115), 62 states have internal predecessors, (115), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:34:28,077 INFO L276 IsEmpty]: Start isEmpty. Operand 956 states and 1455 transitions. [2022-01-31 18:34:28,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-31 18:34:28,085 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:34:28,085 INFO L514 BasicCegarLoop]: trace histogram [30, 30, 30, 26, 10, 10, 9, 9, 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] [2022-01-31 18:34:28,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-01-31 18:34:28,085 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:34:28,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:34:28,086 INFO L85 PathProgramCache]: Analyzing trace with hash -539829876, now seen corresponding path program 7 times [2022-01-31 18:34:28,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:34:28,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [625934639] [2022-01-31 18:34:28,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:34:28,087 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:34:28,088 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:34:28,088 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:34:28,089 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:34:28,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:28,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:34:28,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:28,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 18:34:28,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:28,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-01-31 18:34:28,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:29,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-31 18:34:29,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:29,739 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-31 18:34:29,740 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:34:29,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [625934639] [2022-01-31 18:34:29,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [625934639] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:34:29,740 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:34:29,740 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [51] imperfect sequences [] total 51 [2022-01-31 18:34:29,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542123854] [2022-01-31 18:34:29,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:34:29,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-01-31 18:34:29,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:34:29,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-01-31 18:34:29,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=2394, Unknown=0, NotChecked=0, Total=2550 [2022-01-31 18:34:29,741 INFO L87 Difference]: Start difference. First operand 956 states and 1455 transitions. Second operand has 51 states, 51 states have (on average 2.372549019607843) internal successors, (121), 49 states have internal predecessors, (121), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-01-31 18:34:33,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:34:33,599 INFO L93 Difference]: Finished difference Result 2215 states and 3900 transitions. [2022-01-31 18:34:33,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2022-01-31 18:34:33,599 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 2.372549019607843) internal successors, (121), 49 states have internal predecessors, (121), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 190 [2022-01-31 18:34:33,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:34:33,611 INFO L225 Difference]: With dead ends: 2215 [2022-01-31 18:34:33,611 INFO L226 Difference]: Without dead ends: 2211 [2022-01-31 18:34:33,617 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4937 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=946, Invalid=15824, Unknown=0, NotChecked=0, Total=16770 [2022-01-31 18:34:33,618 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 193 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 4696 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 4853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 4696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-01-31 18:34:33,618 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [193 Valid, 164 Invalid, 4853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 4696 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-01-31 18:34:33,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2211 states. [2022-01-31 18:34:34,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2211 to 2037. [2022-01-31 18:34:34,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2037 states, 1935 states have (on average 1.2356589147286823) internal successors, (2391), 2002 states have internal predecessors, (2391), 30 states have call successors, (30), 6 states have call predecessors, (30), 71 states have return successors, (981), 28 states have call predecessors, (981), 29 states have call successors, (981) [2022-01-31 18:34:34,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2037 states to 2037 states and 3402 transitions. [2022-01-31 18:34:34,090 INFO L78 Accepts]: Start accepts. Automaton has 2037 states and 3402 transitions. Word has length 190 [2022-01-31 18:34:34,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:34:34,090 INFO L470 AbstractCegarLoop]: Abstraction has 2037 states and 3402 transitions. [2022-01-31 18:34:34,090 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 2.372549019607843) internal successors, (121), 49 states have internal predecessors, (121), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-01-31 18:34:34,090 INFO L276 IsEmpty]: Start isEmpty. Operand 2037 states and 3402 transitions. [2022-01-31 18:34:34,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-31 18:34:34,106 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:34:34,106 INFO L514 BasicCegarLoop]: trace histogram [30, 30, 30, 28, 10, 10, 9, 9, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:34:34,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-01-31 18:34:34,107 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:34:34,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:34:34,107 INFO L85 PathProgramCache]: Analyzing trace with hash -1217653488, now seen corresponding path program 8 times [2022-01-31 18:34:34,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:34:34,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [367612294] [2022-01-31 18:34:34,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:34:34,108 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:34:34,108 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:34:34,108 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:34:34,110 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:34:34,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:34,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:34:34,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:34,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 18:34:34,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:35,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-01-31 18:34:35,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:35,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-31 18:34:35,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:36,338 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-01-31 18:34:36,338 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:34:36,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [367612294] [2022-01-31 18:34:36,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [367612294] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:34:36,338 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:34:36,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [66] imperfect sequences [] total 66 [2022-01-31 18:34:36,339 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995110767] [2022-01-31 18:34:36,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:34:36,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2022-01-31 18:34:36,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:34:36,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2022-01-31 18:34:36,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=4087, Unknown=0, NotChecked=0, Total=4290 [2022-01-31 18:34:36,340 INFO L87 Difference]: Start difference. First operand 2037 states and 3402 transitions. Second operand has 66 states, 65 states have (on average 1.7692307692307692) internal successors, (115), 64 states have internal predecessors, (115), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:34:40,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:34:40,548 INFO L93 Difference]: Finished difference Result 2283 states and 3787 transitions. [2022-01-31 18:34:40,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-01-31 18:34:40,548 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 65 states have (on average 1.7692307692307692) internal successors, (115), 64 states have internal predecessors, (115), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 190 [2022-01-31 18:34:40,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:34:40,560 INFO L225 Difference]: With dead ends: 2283 [2022-01-31 18:34:40,560 INFO L226 Difference]: Without dead ends: 2279 [2022-01-31 18:34:40,567 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4858 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=806, Invalid=16750, Unknown=0, NotChecked=0, Total=17556 [2022-01-31 18:34:40,567 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 191 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 5242 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 5362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 5242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-01-31 18:34:40,567 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [191 Valid, 198 Invalid, 5362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 5242 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-01-31 18:34:40,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2279 states. [2022-01-31 18:34:41,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2279 to 2085. [2022-01-31 18:34:41,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2085 states, 1983 states have (on average 1.2360060514372164) internal successors, (2451), 2050 states have internal predecessors, (2451), 30 states have call successors, (30), 6 states have call predecessors, (30), 71 states have return successors, (981), 28 states have call predecessors, (981), 29 states have call successors, (981) [2022-01-31 18:34:41,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2085 states to 2085 states and 3462 transitions. [2022-01-31 18:34:41,072 INFO L78 Accepts]: Start accepts. Automaton has 2085 states and 3462 transitions. Word has length 190 [2022-01-31 18:34:41,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:34:41,072 INFO L470 AbstractCegarLoop]: Abstraction has 2085 states and 3462 transitions. [2022-01-31 18:34:41,073 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 65 states have (on average 1.7692307692307692) internal successors, (115), 64 states have internal predecessors, (115), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:34:41,073 INFO L276 IsEmpty]: Start isEmpty. Operand 2085 states and 3462 transitions. [2022-01-31 18:34:41,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-31 18:34:41,092 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:34:41,093 INFO L514 BasicCegarLoop]: trace histogram [30, 30, 30, 27, 10, 10, 9, 9, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:34:41,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-01-31 18:34:41,093 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:34:41,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:34:41,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1083169102, now seen corresponding path program 9 times [2022-01-31 18:34:41,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:34:41,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2033106922] [2022-01-31 18:34:41,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:34:41,095 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:34:41,096 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:34:41,096 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:34:41,097 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:34:41,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:41,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:34:41,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:41,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 18:34:41,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:42,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-01-31 18:34:42,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:42,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-31 18:34:42,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:43,330 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-01-31 18:34:43,331 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:34:43,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2033106922] [2022-01-31 18:34:43,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2033106922] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:34:43,334 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:34:43,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [64] imperfect sequences [] total 64 [2022-01-31 18:34:43,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117444196] [2022-01-31 18:34:43,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:34:43,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-01-31 18:34:43,334 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:34:43,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-01-31 18:34:43,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=3835, Unknown=0, NotChecked=0, Total=4032 [2022-01-31 18:34:43,336 INFO L87 Difference]: Start difference. First operand 2085 states and 3462 transitions. Second operand has 64 states, 63 states have (on average 1.8253968253968254) internal successors, (115), 62 states have internal predecessors, (115), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:34:48,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:34:48,034 INFO L93 Difference]: Finished difference Result 2295 states and 3803 transitions. [2022-01-31 18:34:48,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-01-31 18:34:48,034 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 63 states have (on average 1.8253968253968254) internal successors, (115), 62 states have internal predecessors, (115), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 190 [2022-01-31 18:34:48,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:34:48,045 INFO L225 Difference]: With dead ends: 2295 [2022-01-31 18:34:48,045 INFO L226 Difference]: Without dead ends: 2291 [2022-01-31 18:34:48,051 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4471 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=780, Invalid=15732, Unknown=0, NotChecked=0, Total=16512 [2022-01-31 18:34:48,052 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 160 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 5559 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 5657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 5559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-01-31 18:34:48,052 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [160 Valid, 201 Invalid, 5657 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 5559 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-01-31 18:34:48,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2291 states. [2022-01-31 18:34:48,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2291 to 2117. [2022-01-31 18:34:48,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2117 states, 2015 states have (on average 1.236228287841191) internal successors, (2491), 2082 states have internal predecessors, (2491), 30 states have call successors, (30), 6 states have call predecessors, (30), 71 states have return successors, (981), 28 states have call predecessors, (981), 29 states have call successors, (981) [2022-01-31 18:34:48,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2117 states to 2117 states and 3502 transitions. [2022-01-31 18:34:48,562 INFO L78 Accepts]: Start accepts. Automaton has 2117 states and 3502 transitions. Word has length 190 [2022-01-31 18:34:48,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:34:48,562 INFO L470 AbstractCegarLoop]: Abstraction has 2117 states and 3502 transitions. [2022-01-31 18:34:48,562 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 63 states have (on average 1.8253968253968254) internal successors, (115), 62 states have internal predecessors, (115), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:34:48,562 INFO L276 IsEmpty]: Start isEmpty. Operand 2117 states and 3502 transitions. [2022-01-31 18:34:48,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-31 18:34:48,574 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:34:48,575 INFO L514 BasicCegarLoop]: trace histogram [30, 30, 30, 26, 10, 10, 9, 9, 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] [2022-01-31 18:34:48,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-01-31 18:34:48,575 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:34:48,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:34:48,575 INFO L85 PathProgramCache]: Analyzing trace with hash 72051852, now seen corresponding path program 10 times [2022-01-31 18:34:48,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:34:48,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1798594967] [2022-01-31 18:34:48,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:34:48,576 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:34:48,576 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:34:48,576 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:34:48,579 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:34:48,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:49,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:34:49,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:49,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 18:34:49,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:49,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-01-31 18:34:49,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:49,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-31 18:34:49,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:50,727 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-01-31 18:34:50,727 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:34:50,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1798594967] [2022-01-31 18:34:50,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1798594967] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:34:50,727 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:34:50,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [62] imperfect sequences [] total 62 [2022-01-31 18:34:50,728 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199943529] [2022-01-31 18:34:50,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:34:50,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2022-01-31 18:34:50,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:34:50,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2022-01-31 18:34:50,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=3591, Unknown=0, NotChecked=0, Total=3782 [2022-01-31 18:34:50,729 INFO L87 Difference]: Start difference. First operand 2117 states and 3502 transitions. Second operand has 62 states, 61 states have (on average 1.8852459016393444) internal successors, (115), 60 states have internal predecessors, (115), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:34:55,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:34:55,255 INFO L93 Difference]: Finished difference Result 2327 states and 3822 transitions. [2022-01-31 18:34:55,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-01-31 18:34:55,255 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 61 states have (on average 1.8852459016393444) internal successors, (115), 60 states have internal predecessors, (115), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 190 [2022-01-31 18:34:55,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:34:55,266 INFO L225 Difference]: With dead ends: 2327 [2022-01-31 18:34:55,266 INFO L226 Difference]: Without dead ends: 2323 [2022-01-31 18:34:55,272 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4104 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=754, Invalid=14746, Unknown=0, NotChecked=0, Total=15500 [2022-01-31 18:34:55,273 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 157 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 5564 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 5663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 5564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-01-31 18:34:55,273 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [157 Valid, 199 Invalid, 5663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 5564 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-01-31 18:34:55,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2323 states. [2022-01-31 18:34:55,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2323 to 2163. [2022-01-31 18:34:55,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2163 states, 2059 states have (on average 1.2370082564351628) internal successors, (2547), 2128 states have internal predecessors, (2547), 30 states have call successors, (30), 6 states have call predecessors, (30), 73 states have return successors, (1003), 28 states have call predecessors, (1003), 29 states have call successors, (1003) [2022-01-31 18:34:55,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2163 states to 2163 states and 3580 transitions. [2022-01-31 18:34:55,736 INFO L78 Accepts]: Start accepts. Automaton has 2163 states and 3580 transitions. Word has length 190 [2022-01-31 18:34:55,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:34:55,737 INFO L470 AbstractCegarLoop]: Abstraction has 2163 states and 3580 transitions. [2022-01-31 18:34:55,737 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 61 states have (on average 1.8852459016393444) internal successors, (115), 60 states have internal predecessors, (115), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:34:55,737 INFO L276 IsEmpty]: Start isEmpty. Operand 2163 states and 3580 transitions. [2022-01-31 18:34:55,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-31 18:34:55,748 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:34:55,748 INFO L514 BasicCegarLoop]: trace histogram [30, 30, 30, 25, 10, 10, 9, 9, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:34:55,748 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-01-31 18:34:55,748 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:34:55,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:34:55,749 INFO L85 PathProgramCache]: Analyzing trace with hash -320975158, now seen corresponding path program 11 times [2022-01-31 18:34:55,749 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:34:55,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1327188750] [2022-01-31 18:34:55,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:34:55,750 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:34:55,750 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:34:55,750 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:34:55,752 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:34:55,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:56,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:34:56,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:56,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 18:34:56,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:56,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-01-31 18:34:56,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:57,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-31 18:34:57,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:57,501 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-01-31 18:34:57,501 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:34:57,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1327188750] [2022-01-31 18:34:57,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1327188750] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:34:57,502 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:34:57,502 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [57] imperfect sequences [] total 57 [2022-01-31 18:34:57,502 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914049153] [2022-01-31 18:34:57,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:34:57,502 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-01-31 18:34:57,502 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:34:57,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-01-31 18:34:57,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=3030, Unknown=0, NotChecked=0, Total=3192 [2022-01-31 18:34:57,503 INFO L87 Difference]: Start difference. First operand 2163 states and 3580 transitions. Second operand has 57 states, 57 states have (on average 2.192982456140351) internal successors, (125), 56 states have internal predecessors, (125), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:35:03,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:35:03,553 INFO L93 Difference]: Finished difference Result 4172 states and 7322 transitions. [2022-01-31 18:35:03,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2022-01-31 18:35:03,553 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 2.192982456140351) internal successors, (125), 56 states have internal predecessors, (125), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 190 [2022-01-31 18:35:03,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:35:03,576 INFO L225 Difference]: With dead ends: 4172 [2022-01-31 18:35:03,576 INFO L226 Difference]: Without dead ends: 4168 [2022-01-31 18:35:03,586 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6646 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1051, Invalid=21001, Unknown=0, NotChecked=0, Total=22052 [2022-01-31 18:35:03,587 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 168 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 7283 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 7388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 7283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-01-31 18:35:03,587 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [168 Valid, 228 Invalid, 7388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 7283 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-01-31 18:35:03,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4168 states. [2022-01-31 18:35:04,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4168 to 3457. [2022-01-31 18:35:04,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3457 states, 3302 states have (on average 1.238946093276802) internal successors, (4091), 3408 states have internal predecessors, (4091), 42 states have call successors, (42), 8 states have call predecessors, (42), 112 states have return successors, (1809), 40 states have call predecessors, (1809), 41 states have call successors, (1809) [2022-01-31 18:35:04,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3457 states to 3457 states and 5942 transitions. [2022-01-31 18:35:04,624 INFO L78 Accepts]: Start accepts. Automaton has 3457 states and 5942 transitions. Word has length 190 [2022-01-31 18:35:04,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:35:04,625 INFO L470 AbstractCegarLoop]: Abstraction has 3457 states and 5942 transitions. [2022-01-31 18:35:04,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 2.192982456140351) internal successors, (125), 56 states have internal predecessors, (125), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:35:04,625 INFO L276 IsEmpty]: Start isEmpty. Operand 3457 states and 5942 transitions. [2022-01-31 18:35:04,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-31 18:35:04,654 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:35:04,654 INFO L514 BasicCegarLoop]: trace histogram [30, 30, 30, 28, 10, 10, 9, 9, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:35:04,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-01-31 18:35:04,654 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:35:04,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:35:04,655 INFO L85 PathProgramCache]: Analyzing trace with hash -1374468592, now seen corresponding path program 12 times [2022-01-31 18:35:04,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:35:04,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [884039113] [2022-01-31 18:35:04,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:35:04,656 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:35:04,656 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:35:04,657 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:35:04,658 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:35:04,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:05,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:35:05,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:05,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 18:35:05,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:05,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-01-31 18:35:05,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:05,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-31 18:35:05,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:07,017 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-01-31 18:35:07,017 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:35:07,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [884039113] [2022-01-31 18:35:07,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [884039113] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:35:07,018 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:35:07,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [66] imperfect sequences [] total 66 [2022-01-31 18:35:07,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927126296] [2022-01-31 18:35:07,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:35:07,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2022-01-31 18:35:07,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:35:07,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2022-01-31 18:35:07,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=4087, Unknown=0, NotChecked=0, Total=4290 [2022-01-31 18:35:07,019 INFO L87 Difference]: Start difference. First operand 3457 states and 5942 transitions. Second operand has 66 states, 65 states have (on average 1.7692307692307692) internal successors, (115), 64 states have internal predecessors, (115), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:35:11,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:35:11,649 INFO L93 Difference]: Finished difference Result 3923 states and 6660 transitions. [2022-01-31 18:35:11,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-01-31 18:35:11,650 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 65 states have (on average 1.7692307692307692) internal successors, (115), 64 states have internal predecessors, (115), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 190 [2022-01-31 18:35:11,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:35:11,678 INFO L225 Difference]: With dead ends: 3923 [2022-01-31 18:35:11,678 INFO L226 Difference]: Without dead ends: 3919 [2022-01-31 18:35:11,694 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4854 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=806, Invalid=16750, Unknown=0, NotChecked=0, Total=17556 [2022-01-31 18:35:11,694 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 172 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 5188 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 5286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 5188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-01-31 18:35:11,695 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [172 Valid, 202 Invalid, 5286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 5188 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-01-31 18:35:11,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3919 states. [2022-01-31 18:35:12,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3919 to 3537. [2022-01-31 18:35:12,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3537 states, 3382 states have (on average 1.2392075694855116) internal successors, (4191), 3488 states have internal predecessors, (4191), 42 states have call successors, (42), 8 states have call predecessors, (42), 112 states have return successors, (1809), 40 states have call predecessors, (1809), 41 states have call successors, (1809) [2022-01-31 18:35:12,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3537 states to 3537 states and 6042 transitions. [2022-01-31 18:35:12,649 INFO L78 Accepts]: Start accepts. Automaton has 3537 states and 6042 transitions. Word has length 190 [2022-01-31 18:35:12,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:35:12,649 INFO L470 AbstractCegarLoop]: Abstraction has 3537 states and 6042 transitions. [2022-01-31 18:35:12,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 65 states have (on average 1.7692307692307692) internal successors, (115), 64 states have internal predecessors, (115), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:35:12,650 INFO L276 IsEmpty]: Start isEmpty. Operand 3537 states and 6042 transitions. [2022-01-31 18:35:12,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-31 18:35:12,669 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:35:12,669 INFO L514 BasicCegarLoop]: trace histogram [30, 30, 30, 27, 10, 10, 9, 9, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:35:12,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-01-31 18:35:12,670 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:35:12,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:35:12,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1155613874, now seen corresponding path program 13 times [2022-01-31 18:35:12,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:35:12,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1833527122] [2022-01-31 18:35:12,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:35:12,671 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:35:12,671 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:35:12,671 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:35:12,673 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:35:12,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:13,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:35:13,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:13,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 18:35:13,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:13,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-01-31 18:35:13,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:13,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-31 18:35:13,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:14,872 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-01-31 18:35:14,875 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:35:14,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1833527122] [2022-01-31 18:35:14,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1833527122] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:35:14,875 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:35:14,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [64] imperfect sequences [] total 64 [2022-01-31 18:35:14,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164483115] [2022-01-31 18:35:14,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:35:14,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-01-31 18:35:14,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:35:14,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-01-31 18:35:14,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=3835, Unknown=0, NotChecked=0, Total=4032 [2022-01-31 18:35:14,878 INFO L87 Difference]: Start difference. First operand 3537 states and 6042 transitions. Second operand has 64 states, 63 states have (on average 1.8253968253968254) internal successors, (115), 62 states have internal predecessors, (115), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:35:19,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:35:19,523 INFO L93 Difference]: Finished difference Result 3947 states and 6692 transitions. [2022-01-31 18:35:19,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-01-31 18:35:19,524 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 63 states have (on average 1.8253968253968254) internal successors, (115), 62 states have internal predecessors, (115), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 190 [2022-01-31 18:35:19,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:35:19,541 INFO L225 Difference]: With dead ends: 3947 [2022-01-31 18:35:19,542 INFO L226 Difference]: Without dead ends: 3943 [2022-01-31 18:35:19,551 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4463 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=780, Invalid=15732, Unknown=0, NotChecked=0, Total=16512 [2022-01-31 18:35:19,552 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 180 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 4699 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 4804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 4699 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-01-31 18:35:19,552 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [180 Valid, 164 Invalid, 4804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 4699 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-01-31 18:35:19,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3943 states. [2022-01-31 18:35:20,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3943 to 3585. [2022-01-31 18:35:20,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3585 states, 3430 states have (on average 1.2393586005830903) internal successors, (4251), 3536 states have internal predecessors, (4251), 42 states have call successors, (42), 8 states have call predecessors, (42), 112 states have return successors, (1809), 40 states have call predecessors, (1809), 41 states have call successors, (1809) [2022-01-31 18:35:20,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3585 states to 3585 states and 6102 transitions. [2022-01-31 18:35:20,493 INFO L78 Accepts]: Start accepts. Automaton has 3585 states and 6102 transitions. Word has length 190 [2022-01-31 18:35:20,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:35:20,493 INFO L470 AbstractCegarLoop]: Abstraction has 3585 states and 6102 transitions. [2022-01-31 18:35:20,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 63 states have (on average 1.8253968253968254) internal successors, (115), 62 states have internal predecessors, (115), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:35:20,494 INFO L276 IsEmpty]: Start isEmpty. Operand 3585 states and 6102 transitions. [2022-01-31 18:35:20,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-31 18:35:20,514 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:35:20,514 INFO L514 BasicCegarLoop]: trace histogram [30, 30, 30, 26, 10, 10, 9, 9, 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] [2022-01-31 18:35:20,514 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-01-31 18:35:20,514 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:35:20,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:35:20,514 INFO L85 PathProgramCache]: Analyzing trace with hash 1145208716, now seen corresponding path program 14 times [2022-01-31 18:35:20,514 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:35:20,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [427845044] [2022-01-31 18:35:20,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:35:20,516 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:35:20,517 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:35:20,517 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:35:20,518 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:35:20,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:21,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:35:21,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:21,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 18:35:21,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:21,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-01-31 18:35:21,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:21,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-31 18:35:21,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:22,578 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-01-31 18:35:22,578 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:35:22,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [427845044] [2022-01-31 18:35:22,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [427845044] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:35:22,578 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:35:22,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [62] imperfect sequences [] total 62 [2022-01-31 18:35:22,579 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126164433] [2022-01-31 18:35:22,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:35:22,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2022-01-31 18:35:22,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:35:22,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2022-01-31 18:35:22,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=3591, Unknown=0, NotChecked=0, Total=3782 [2022-01-31 18:35:22,580 INFO L87 Difference]: Start difference. First operand 3585 states and 6102 transitions. Second operand has 62 states, 61 states have (on average 1.8852459016393444) internal successors, (115), 60 states have internal predecessors, (115), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:35:26,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:35:26,989 INFO L93 Difference]: Finished difference Result 3983 states and 6703 transitions. [2022-01-31 18:35:26,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-01-31 18:35:26,989 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 61 states have (on average 1.8852459016393444) internal successors, (115), 60 states have internal predecessors, (115), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 190 [2022-01-31 18:35:26,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:35:27,011 INFO L225 Difference]: With dead ends: 3983 [2022-01-31 18:35:27,012 INFO L226 Difference]: Without dead ends: 3979 [2022-01-31 18:35:27,020 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4092 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=754, Invalid=14746, Unknown=0, NotChecked=0, Total=15500 [2022-01-31 18:35:27,025 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 168 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 4740 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 4844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 4740 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-01-31 18:35:27,025 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [168 Valid, 159 Invalid, 4844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 4740 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-01-31 18:35:27,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3979 states. [2022-01-31 18:35:27,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3979 to 3679. [2022-01-31 18:35:27,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3679 states, 3522 states have (on average 1.2399204997160704) internal successors, (4367), 3630 states have internal predecessors, (4367), 42 states have call successors, (42), 8 states have call predecessors, (42), 114 states have return successors, (1847), 40 states have call predecessors, (1847), 41 states have call successors, (1847) [2022-01-31 18:35:27,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3679 states to 3679 states and 6256 transitions. [2022-01-31 18:35:27,934 INFO L78 Accepts]: Start accepts. Automaton has 3679 states and 6256 transitions. Word has length 190 [2022-01-31 18:35:27,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:35:27,935 INFO L470 AbstractCegarLoop]: Abstraction has 3679 states and 6256 transitions. [2022-01-31 18:35:27,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 61 states have (on average 1.8852459016393444) internal successors, (115), 60 states have internal predecessors, (115), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:35:27,935 INFO L276 IsEmpty]: Start isEmpty. Operand 3679 states and 6256 transitions. [2022-01-31 18:35:27,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-31 18:35:27,958 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:35:27,958 INFO L514 BasicCegarLoop]: trace histogram [30, 30, 30, 25, 10, 10, 9, 9, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:35:27,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-01-31 18:35:27,958 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:35:27,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:35:27,958 INFO L85 PathProgramCache]: Analyzing trace with hash 134091466, now seen corresponding path program 15 times [2022-01-31 18:35:27,959 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:35:27,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [344190484] [2022-01-31 18:35:27,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:35:27,960 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:35:27,960 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:35:27,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:35:27,962 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:35:28,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:28,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:35:28,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:28,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 18:35:28,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:28,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-01-31 18:35:28,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:28,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-31 18:35:28,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:29,911 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-01-31 18:35:29,912 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:35:29,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [344190484] [2022-01-31 18:35:29,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [344190484] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:35:29,913 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:35:29,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [60] imperfect sequences [] total 60 [2022-01-31 18:35:29,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501948397] [2022-01-31 18:35:29,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:35:29,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2022-01-31 18:35:29,913 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:35:29,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2022-01-31 18:35:29,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=3355, Unknown=0, NotChecked=0, Total=3540 [2022-01-31 18:35:29,916 INFO L87 Difference]: Start difference. First operand 3679 states and 6256 transitions. Second operand has 60 states, 59 states have (on average 1.9491525423728813) internal successors, (115), 58 states have internal predecessors, (115), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:35:34,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:35:34,729 INFO L93 Difference]: Finished difference Result 4053 states and 6827 transitions. [2022-01-31 18:35:34,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-01-31 18:35:34,730 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 59 states have (on average 1.9491525423728813) internal successors, (115), 58 states have internal predecessors, (115), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 190 [2022-01-31 18:35:34,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:35:34,746 INFO L225 Difference]: With dead ends: 4053 [2022-01-31 18:35:34,746 INFO L226 Difference]: Without dead ends: 4049 [2022-01-31 18:35:34,753 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3741 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=728, Invalid=13792, Unknown=0, NotChecked=0, Total=14520 [2022-01-31 18:35:34,754 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 175 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 4989 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 5095 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 4989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-01-31 18:35:34,754 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [175 Valid, 185 Invalid, 5095 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 4989 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-01-31 18:35:34,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4049 states. [2022-01-31 18:35:35,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4049 to 3741. [2022-01-31 18:35:35,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3741 states, 3582 states have (on average 1.2403685092127303) internal successors, (4443), 3692 states have internal predecessors, (4443), 42 states have call successors, (42), 8 states have call predecessors, (42), 116 states have return successors, (1873), 40 states have call predecessors, (1873), 41 states have call successors, (1873) [2022-01-31 18:35:35,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3741 states to 3741 states and 6358 transitions. [2022-01-31 18:35:35,837 INFO L78 Accepts]: Start accepts. Automaton has 3741 states and 6358 transitions. Word has length 190 [2022-01-31 18:35:35,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:35:35,837 INFO L470 AbstractCegarLoop]: Abstraction has 3741 states and 6358 transitions. [2022-01-31 18:35:35,837 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 59 states have (on average 1.9491525423728813) internal successors, (115), 58 states have internal predecessors, (115), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:35:35,837 INFO L276 IsEmpty]: Start isEmpty. Operand 3741 states and 6358 transitions. [2022-01-31 18:35:35,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-31 18:35:35,858 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:35:35,858 INFO L514 BasicCegarLoop]: trace histogram [30, 30, 30, 24, 10, 10, 9, 9, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:35:35,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-01-31 18:35:35,865 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:35:35,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:35:35,865 INFO L85 PathProgramCache]: Analyzing trace with hash -258935544, now seen corresponding path program 16 times [2022-01-31 18:35:35,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:35:35,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [388414515] [2022-01-31 18:35:35,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:35:35,867 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:35:35,867 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:35:35,867 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:35:35,869 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:35:35,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:36,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:35:36,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:36,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 18:35:36,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:36,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-01-31 18:35:36,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:36,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-31 18:35:36,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:37,253 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-31 18:35:37,253 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:35:37,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [388414515] [2022-01-31 18:35:37,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [388414515] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:35:37,254 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:35:37,254 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [46] imperfect sequences [] total 46 [2022-01-31 18:35:37,254 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855033913] [2022-01-31 18:35:37,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:35:37,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-01-31 18:35:37,254 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:35:37,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-01-31 18:35:37,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=1931, Unknown=0, NotChecked=0, Total=2070 [2022-01-31 18:35:37,255 INFO L87 Difference]: Start difference. First operand 3741 states and 6358 transitions. Second operand has 46 states, 46 states have (on average 2.4347826086956523) internal successors, (112), 44 states have internal predecessors, (112), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-01-31 18:35:42,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:35:42,525 INFO L93 Difference]: Finished difference Result 9564 states and 19272 transitions. [2022-01-31 18:35:42,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-01-31 18:35:42,526 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 2.4347826086956523) internal successors, (112), 44 states have internal predecessors, (112), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 190 [2022-01-31 18:35:42,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:35:42,593 INFO L225 Difference]: With dead ends: 9564 [2022-01-31 18:35:42,594 INFO L226 Difference]: Without dead ends: 9560 [2022-01-31 18:35:42,624 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4068 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=832, Invalid=12508, Unknown=0, NotChecked=0, Total=13340 [2022-01-31 18:35:42,625 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 147 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 4367 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 4447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 4367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-01-31 18:35:42,625 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [147 Valid, 175 Invalid, 4447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 4367 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-01-31 18:35:42,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9560 states. [2022-01-31 18:35:45,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9560 to 7925. [2022-01-31 18:35:45,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7925 states, 7615 states have (on average 1.2411030860144452) internal successors, (9451), 7834 states have internal predecessors, (9451), 78 states have call successors, (78), 14 states have call predecessors, (78), 231 states have return successors, (5656), 76 states have call predecessors, (5656), 77 states have call successors, (5656) [2022-01-31 18:35:45,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7925 states to 7925 states and 15185 transitions. [2022-01-31 18:35:45,365 INFO L78 Accepts]: Start accepts. Automaton has 7925 states and 15185 transitions. Word has length 190 [2022-01-31 18:35:45,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:35:45,365 INFO L470 AbstractCegarLoop]: Abstraction has 7925 states and 15185 transitions. [2022-01-31 18:35:45,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 2.4347826086956523) internal successors, (112), 44 states have internal predecessors, (112), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-01-31 18:35:45,365 INFO L276 IsEmpty]: Start isEmpty. Operand 7925 states and 15185 transitions. [2022-01-31 18:35:45,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-31 18:35:45,433 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:35:45,433 INFO L514 BasicCegarLoop]: trace histogram [30, 30, 30, 28, 10, 10, 9, 9, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:35:45,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-01-31 18:35:45,434 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:35:45,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:35:45,439 INFO L85 PathProgramCache]: Analyzing trace with hash -1413875952, now seen corresponding path program 17 times [2022-01-31 18:35:45,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:35:45,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [275395441] [2022-01-31 18:35:45,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:35:45,441 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:35:45,441 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:35:45,441 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:35:45,442 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:35:45,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:46,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:35:46,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:46,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 18:35:46,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:46,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-01-31 18:35:46,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:46,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-31 18:35:46,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:47,623 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-01-31 18:35:47,623 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:35:47,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [275395441] [2022-01-31 18:35:47,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [275395441] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:35:47,623 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:35:47,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [66] imperfect sequences [] total 66 [2022-01-31 18:35:47,627 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136378879] [2022-01-31 18:35:47,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:35:47,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2022-01-31 18:35:47,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:35:47,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2022-01-31 18:35:47,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=4087, Unknown=0, NotChecked=0, Total=4290 [2022-01-31 18:35:47,629 INFO L87 Difference]: Start difference. First operand 7925 states and 15185 transitions. Second operand has 66 states, 65 states have (on average 1.7692307692307692) internal successors, (115), 64 states have internal predecessors, (115), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:35:53,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:35:53,624 INFO L93 Difference]: Finished difference Result 8869 states and 16751 transitions. [2022-01-31 18:35:53,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-01-31 18:35:53,624 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 65 states have (on average 1.7692307692307692) internal successors, (115), 64 states have internal predecessors, (115), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 190 [2022-01-31 18:35:53,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:35:53,674 INFO L225 Difference]: With dead ends: 8869 [2022-01-31 18:35:53,675 INFO L226 Difference]: Without dead ends: 8865 [2022-01-31 18:35:53,703 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4850 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=806, Invalid=16750, Unknown=0, NotChecked=0, Total=17556 [2022-01-31 18:35:53,704 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 191 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 4731 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 4852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 4731 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-01-31 18:35:53,706 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [191 Valid, 157 Invalid, 4852 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 4731 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-01-31 18:35:53,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8865 states. [2022-01-31 18:35:56,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8865 to 8149. [2022-01-31 18:35:56,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8149 states, 7839 states have (on average 1.2413573159841818) internal successors, (9731), 8058 states have internal predecessors, (9731), 78 states have call successors, (78), 14 states have call predecessors, (78), 231 states have return successors, (5656), 76 states have call predecessors, (5656), 77 states have call successors, (5656) [2022-01-31 18:35:56,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8149 states to 8149 states and 15465 transitions. [2022-01-31 18:35:56,420 INFO L78 Accepts]: Start accepts. Automaton has 8149 states and 15465 transitions. Word has length 190 [2022-01-31 18:35:56,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:35:56,421 INFO L470 AbstractCegarLoop]: Abstraction has 8149 states and 15465 transitions. [2022-01-31 18:35:56,421 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 65 states have (on average 1.7692307692307692) internal successors, (115), 64 states have internal predecessors, (115), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:35:56,421 INFO L276 IsEmpty]: Start isEmpty. Operand 8149 states and 15465 transitions. [2022-01-31 18:35:56,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-31 18:35:56,493 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:35:56,494 INFO L514 BasicCegarLoop]: trace histogram [30, 30, 30, 27, 10, 10, 9, 9, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:35:56,494 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-01-31 18:35:56,494 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:35:56,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:35:56,494 INFO L85 PathProgramCache]: Analyzing trace with hash -1195021234, now seen corresponding path program 18 times [2022-01-31 18:35:56,494 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:35:56,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [251077942] [2022-01-31 18:35:56,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:35:56,495 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:35:56,495 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:35:56,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:35:56,497 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:35:56,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:57,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:35:57,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:57,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 18:35:57,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:57,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-01-31 18:35:57,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:57,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-31 18:35:57,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:58,594 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-01-31 18:35:58,594 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:35:58,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [251077942] [2022-01-31 18:35:58,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [251077942] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:35:58,594 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:35:58,594 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [64] imperfect sequences [] total 64 [2022-01-31 18:35:58,594 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641652847] [2022-01-31 18:35:58,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:35:58,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-01-31 18:35:58,595 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:35:58,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-01-31 18:35:58,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=3835, Unknown=0, NotChecked=0, Total=4032 [2022-01-31 18:35:58,596 INFO L87 Difference]: Start difference. First operand 8149 states and 15465 transitions. Second operand has 64 states, 63 states have (on average 1.8253968253968254) internal successors, (115), 62 states have internal predecessors, (115), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:36:04,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:36:04,870 INFO L93 Difference]: Finished difference Result 9037 states and 16906 transitions. [2022-01-31 18:36:04,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-01-31 18:36:04,870 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 63 states have (on average 1.8253968253968254) internal successors, (115), 62 states have internal predecessors, (115), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 190 [2022-01-31 18:36:04,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:36:04,917 INFO L225 Difference]: With dead ends: 9037 [2022-01-31 18:36:04,917 INFO L226 Difference]: Without dead ends: 9033 [2022-01-31 18:36:04,954 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4459 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=780, Invalid=15732, Unknown=0, NotChecked=0, Total=16512 [2022-01-31 18:36:04,955 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 173 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 5468 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 5576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 5468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:36:04,955 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [173 Valid, 208 Invalid, 5576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 5468 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-01-31 18:36:04,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9033 states. [2022-01-31 18:36:07,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9033 to 8297. [2022-01-31 18:36:07,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8297 states, 7984 states have (on average 1.2416082164328657) internal successors, (9913), 8206 states have internal predecessors, (9913), 78 states have call successors, (78), 14 states have call predecessors, (78), 234 states have return successors, (5718), 76 states have call predecessors, (5718), 77 states have call successors, (5718) [2022-01-31 18:36:07,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8297 states to 8297 states and 15709 transitions. [2022-01-31 18:36:07,684 INFO L78 Accepts]: Start accepts. Automaton has 8297 states and 15709 transitions. Word has length 190 [2022-01-31 18:36:07,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:36:07,685 INFO L470 AbstractCegarLoop]: Abstraction has 8297 states and 15709 transitions. [2022-01-31 18:36:07,685 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 63 states have (on average 1.8253968253968254) internal successors, (115), 62 states have internal predecessors, (115), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:36:07,685 INFO L276 IsEmpty]: Start isEmpty. Operand 8297 states and 15709 transitions. [2022-01-31 18:36:07,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-31 18:36:07,755 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:36:07,756 INFO L514 BasicCegarLoop]: trace histogram [30, 30, 30, 27, 10, 10, 9, 9, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:36:07,756 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-01-31 18:36:07,756 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:36:07,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:36:07,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1351836338, now seen corresponding path program 19 times [2022-01-31 18:36:07,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:36:07,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [993051456] [2022-01-31 18:36:07,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:36:07,757 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:36:07,757 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:36:07,757 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:36:07,759 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:36:07,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:08,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:36:08,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:08,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 18:36:08,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:08,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-01-31 18:36:08,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:08,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-31 18:36:08,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:09,859 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-01-31 18:36:09,859 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:36:09,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [993051456] [2022-01-31 18:36:09,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [993051456] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:36:09,859 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:36:09,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [64] imperfect sequences [] total 64 [2022-01-31 18:36:09,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780679902] [2022-01-31 18:36:09,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:36:09,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-01-31 18:36:09,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:36:09,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-01-31 18:36:09,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=3835, Unknown=0, NotChecked=0, Total=4032 [2022-01-31 18:36:09,861 INFO L87 Difference]: Start difference. First operand 8297 states and 15709 transitions. Second operand has 64 states, 63 states have (on average 1.8253968253968254) internal successors, (115), 62 states have internal predecessors, (115), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:36:15,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:36:15,899 INFO L93 Difference]: Finished difference Result 9125 states and 17135 transitions. [2022-01-31 18:36:15,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-01-31 18:36:15,900 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 63 states have (on average 1.8253968253968254) internal successors, (115), 62 states have internal predecessors, (115), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 190 [2022-01-31 18:36:15,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:36:15,960 INFO L225 Difference]: With dead ends: 9125 [2022-01-31 18:36:15,960 INFO L226 Difference]: Without dead ends: 9121 [2022-01-31 18:36:15,999 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4455 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=780, Invalid=15732, Unknown=0, NotChecked=0, Total=16512 [2022-01-31 18:36:16,000 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 188 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 4324 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 4435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 4324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-01-31 18:36:16,000 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [188 Valid, 141 Invalid, 4435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 4324 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-01-31 18:36:16,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9121 states. [2022-01-31 18:36:18,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9121 to 8393. [2022-01-31 18:36:18,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8393 states, 8080 states have (on average 1.2417079207920791) internal successors, (10033), 8302 states have internal predecessors, (10033), 78 states have call successors, (78), 14 states have call predecessors, (78), 234 states have return successors, (5718), 76 states have call predecessors, (5718), 77 states have call successors, (5718) [2022-01-31 18:36:18,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8393 states to 8393 states and 15829 transitions. [2022-01-31 18:36:18,940 INFO L78 Accepts]: Start accepts. Automaton has 8393 states and 15829 transitions. Word has length 190 [2022-01-31 18:36:18,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:36:18,940 INFO L470 AbstractCegarLoop]: Abstraction has 8393 states and 15829 transitions. [2022-01-31 18:36:18,941 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 63 states have (on average 1.8253968253968254) internal successors, (115), 62 states have internal predecessors, (115), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:36:18,941 INFO L276 IsEmpty]: Start isEmpty. Operand 8393 states and 15829 transitions. [2022-01-31 18:36:19,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-31 18:36:19,013 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:36:19,014 INFO L514 BasicCegarLoop]: trace histogram [30, 30, 30, 26, 10, 10, 9, 9, 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] [2022-01-31 18:36:19,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-01-31 18:36:19,014 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:36:19,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:36:19,014 INFO L85 PathProgramCache]: Analyzing trace with hash -1132981620, now seen corresponding path program 20 times [2022-01-31 18:36:19,014 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:36:19,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1831868177] [2022-01-31 18:36:19,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:36:19,016 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:36:19,016 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:36:19,016 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:36:19,017 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:36:19,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:19,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:36:19,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:19,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 18:36:19,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:19,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-01-31 18:36:19,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:19,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-31 18:36:19,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:20,935 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-01-31 18:36:20,935 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:36:20,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1831868177] [2022-01-31 18:36:20,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1831868177] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:36:20,935 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:36:20,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [62] imperfect sequences [] total 62 [2022-01-31 18:36:20,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737165578] [2022-01-31 18:36:20,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:36:20,936 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2022-01-31 18:36:20,936 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:36:20,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2022-01-31 18:36:20,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=3591, Unknown=0, NotChecked=0, Total=3782 [2022-01-31 18:36:20,937 INFO L87 Difference]: Start difference. First operand 8393 states and 15829 transitions. Second operand has 62 states, 61 states have (on average 1.8852459016393444) internal successors, (115), 60 states have internal predecessors, (115), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:36:26,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:36:26,926 INFO L93 Difference]: Finished difference Result 9269 states and 17258 transitions. [2022-01-31 18:36:26,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-01-31 18:36:26,927 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 61 states have (on average 1.8852459016393444) internal successors, (115), 60 states have internal predecessors, (115), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 190 [2022-01-31 18:36:26,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:36:26,980 INFO L225 Difference]: With dead ends: 9269 [2022-01-31 18:36:26,980 INFO L226 Difference]: Without dead ends: 9265 [2022-01-31 18:36:27,022 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4080 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=754, Invalid=14746, Unknown=0, NotChecked=0, Total=15500 [2022-01-31 18:36:27,022 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 174 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 5043 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 5161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 5043 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-01-31 18:36:27,022 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [174 Valid, 187 Invalid, 5161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 5043 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-01-31 18:36:27,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9265 states. [2022-01-31 18:36:29,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9265 to 8425. [2022-01-31 18:36:29,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8425 states, 8112 states have (on average 1.241740631163708) internal successors, (10073), 8334 states have internal predecessors, (10073), 78 states have call successors, (78), 14 states have call predecessors, (78), 234 states have return successors, (5718), 76 states have call predecessors, (5718), 77 states have call successors, (5718) [2022-01-31 18:36:29,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8425 states to 8425 states and 15869 transitions. [2022-01-31 18:36:29,739 INFO L78 Accepts]: Start accepts. Automaton has 8425 states and 15869 transitions. Word has length 190 [2022-01-31 18:36:29,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:36:29,740 INFO L470 AbstractCegarLoop]: Abstraction has 8425 states and 15869 transitions. [2022-01-31 18:36:29,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 61 states have (on average 1.8852459016393444) internal successors, (115), 60 states have internal predecessors, (115), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:36:29,740 INFO L276 IsEmpty]: Start isEmpty. Operand 8425 states and 15869 transitions. [2022-01-31 18:36:29,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-31 18:36:29,814 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:36:29,814 INFO L514 BasicCegarLoop]: trace histogram [30, 30, 30, 25, 10, 10, 9, 9, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:36:29,814 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-01-31 18:36:29,815 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:36:29,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:36:29,815 INFO L85 PathProgramCache]: Analyzing trace with hash 1167840970, now seen corresponding path program 21 times [2022-01-31 18:36:29,815 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:36:29,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1402063442] [2022-01-31 18:36:29,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:36:29,816 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:36:29,817 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:36:29,817 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:36:29,818 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:36:29,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:30,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:36:30,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:30,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 18:36:30,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:30,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-01-31 18:36:30,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:30,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-31 18:36:30,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:31,600 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-01-31 18:36:31,600 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:36:31,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1402063442] [2022-01-31 18:36:31,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1402063442] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:36:31,600 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:36:31,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [60] imperfect sequences [] total 60 [2022-01-31 18:36:31,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437683125] [2022-01-31 18:36:31,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:36:31,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2022-01-31 18:36:31,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:36:31,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2022-01-31 18:36:31,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=3355, Unknown=0, NotChecked=0, Total=3540 [2022-01-31 18:36:31,602 INFO L87 Difference]: Start difference. First operand 8425 states and 15869 transitions. Second operand has 60 states, 59 states have (on average 1.9491525423728813) internal successors, (115), 58 states have internal predecessors, (115), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:36:37,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:36:37,583 INFO L93 Difference]: Finished difference Result 9341 states and 17326 transitions. [2022-01-31 18:36:37,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-01-31 18:36:37,584 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 59 states have (on average 1.9491525423728813) internal successors, (115), 58 states have internal predecessors, (115), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 190 [2022-01-31 18:36:37,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:36:37,632 INFO L225 Difference]: With dead ends: 9341 [2022-01-31 18:36:37,632 INFO L226 Difference]: Without dead ends: 9337 [2022-01-31 18:36:37,663 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3725 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=728, Invalid=13792, Unknown=0, NotChecked=0, Total=14520 [2022-01-31 18:36:37,664 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 165 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 5809 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 5907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 5809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:36:37,664 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [165 Valid, 223 Invalid, 5907 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 5809 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-01-31 18:36:37,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9337 states. [2022-01-31 18:36:40,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9337 to 8571. [2022-01-31 18:36:40,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8571 states, 8253 states have (on average 1.242093784078517) internal successors, (10251), 8480 states have internal predecessors, (10251), 78 states have call successors, (78), 14 states have call predecessors, (78), 239 states have return successors, (5790), 76 states have call predecessors, (5790), 77 states have call successors, (5790) [2022-01-31 18:36:40,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8571 states to 8571 states and 16119 transitions. [2022-01-31 18:36:40,433 INFO L78 Accepts]: Start accepts. Automaton has 8571 states and 16119 transitions. Word has length 190 [2022-01-31 18:36:40,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:36:40,433 INFO L470 AbstractCegarLoop]: Abstraction has 8571 states and 16119 transitions. [2022-01-31 18:36:40,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 59 states have (on average 1.9491525423728813) internal successors, (115), 58 states have internal predecessors, (115), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:36:40,433 INFO L276 IsEmpty]: Start isEmpty. Operand 8571 states and 16119 transitions. [2022-01-31 18:36:40,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-31 18:36:40,505 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:36:40,505 INFO L514 BasicCegarLoop]: trace histogram [30, 30, 30, 24, 10, 10, 9, 9, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:36:40,505 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-01-31 18:36:40,505 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:36:40,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:36:40,505 INFO L85 PathProgramCache]: Analyzing trace with hash 156723720, now seen corresponding path program 22 times [2022-01-31 18:36:40,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:36:40,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [938331321] [2022-01-31 18:36:40,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:36:40,507 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:36:40,507 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:36:40,507 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:36:40,508 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:36:40,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:41,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:36:41,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:41,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 18:36:41,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:41,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-01-31 18:36:41,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:41,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-31 18:36:41,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:42,212 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-01-31 18:36:42,212 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:36:42,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [938331321] [2022-01-31 18:36:42,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [938331321] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:36:42,212 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:36:42,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [58] imperfect sequences [] total 58 [2022-01-31 18:36:42,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703791369] [2022-01-31 18:36:42,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:36:42,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-01-31 18:36:42,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:36:42,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-01-31 18:36:42,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=3127, Unknown=0, NotChecked=0, Total=3306 [2022-01-31 18:36:42,214 INFO L87 Difference]: Start difference. First operand 8571 states and 16119 transitions. Second operand has 58 states, 57 states have (on average 2.017543859649123) internal successors, (115), 56 states have internal predecessors, (115), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:36:47,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:36:47,575 INFO L93 Difference]: Finished difference Result 9475 states and 17560 transitions. [2022-01-31 18:36:47,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-01-31 18:36:47,575 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 57 states have (on average 2.017543859649123) internal successors, (115), 56 states have internal predecessors, (115), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 190 [2022-01-31 18:36:47,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:36:47,626 INFO L225 Difference]: With dead ends: 9475 [2022-01-31 18:36:47,626 INFO L226 Difference]: Without dead ends: 9471 [2022-01-31 18:36:47,657 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3390 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=702, Invalid=12870, Unknown=0, NotChecked=0, Total=13572 [2022-01-31 18:36:47,657 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 147 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 4015 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 4106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 4015 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-31 18:36:47,657 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [147 Valid, 138 Invalid, 4106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 4015 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-31 18:36:47,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9471 states. [2022-01-31 18:36:50,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9471 to 8727. [2022-01-31 18:36:50,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8727 states, 8405 states have (on average 1.2424747174301012) internal successors, (10443), 8636 states have internal predecessors, (10443), 78 states have call successors, (78), 14 states have call predecessors, (78), 243 states have return successors, (5840), 76 states have call predecessors, (5840), 77 states have call successors, (5840) [2022-01-31 18:36:50,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8727 states to 8727 states and 16361 transitions. [2022-01-31 18:36:50,467 INFO L78 Accepts]: Start accepts. Automaton has 8727 states and 16361 transitions. Word has length 190 [2022-01-31 18:36:50,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:36:50,467 INFO L470 AbstractCegarLoop]: Abstraction has 8727 states and 16361 transitions. [2022-01-31 18:36:50,467 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 57 states have (on average 2.017543859649123) internal successors, (115), 56 states have internal predecessors, (115), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:36:50,468 INFO L276 IsEmpty]: Start isEmpty. Operand 8727 states and 16361 transitions. [2022-01-31 18:36:50,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-31 18:36:50,541 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:36:50,541 INFO L514 BasicCegarLoop]: trace histogram [30, 30, 30, 23, 10, 10, 9, 9, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:36:50,541 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-01-31 18:36:50,541 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:36:50,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:36:50,542 INFO L85 PathProgramCache]: Analyzing trace with hash -236303290, now seen corresponding path program 23 times [2022-01-31 18:36:50,542 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:36:50,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [170962224] [2022-01-31 18:36:50,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:36:50,543 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:36:50,543 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:36:50,543 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:36:50,544 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:36:50,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:51,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:36:51,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:51,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 18:36:51,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:52,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-01-31 18:36:52,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:52,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-31 18:36:52,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:53,057 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-01-31 18:36:53,057 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:36:53,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [170962224] [2022-01-31 18:36:53,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [170962224] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:36:53,057 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:36:53,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [70] imperfect sequences [] total 70 [2022-01-31 18:36:53,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914848867] [2022-01-31 18:36:53,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:36:53,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2022-01-31 18:36:53,058 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:36:53,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2022-01-31 18:36:53,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=4645, Unknown=0, NotChecked=0, Total=4830 [2022-01-31 18:36:53,059 INFO L87 Difference]: Start difference. First operand 8727 states and 16361 transitions. Second operand has 70 states, 70 states have (on average 1.9) internal successors, (133), 69 states have internal predecessors, (133), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:37:03,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:37:03,804 INFO L93 Difference]: Finished difference Result 13703 states and 23677 transitions. [2022-01-31 18:37:03,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2022-01-31 18:37:03,804 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 1.9) internal successors, (133), 69 states have internal predecessors, (133), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 190 [2022-01-31 18:37:03,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:37:03,869 INFO L225 Difference]: With dead ends: 13703 [2022-01-31 18:37:03,869 INFO L226 Difference]: Without dead ends: 11352 [2022-01-31 18:37:03,910 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11933 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=1260, Invalid=36570, Unknown=0, NotChecked=0, Total=37830 [2022-01-31 18:37:03,910 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 172 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 11877 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 11972 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 11877 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:37:03,910 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [172 Valid, 265 Invalid, 11972 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 11877 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-01-31 18:37:03,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11352 states. [2022-01-31 18:37:07,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11352 to 10016. [2022-01-31 18:37:07,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10016 states, 9680 states have (on average 1.2421487603305785) internal successors, (12024), 9918 states have internal predecessors, (12024), 83 states have call successors, (83), 15 states have call predecessors, (83), 252 states have return successors, (6041), 82 states have call predecessors, (6041), 82 states have call successors, (6041) [2022-01-31 18:37:07,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10016 states to 10016 states and 18148 transitions. [2022-01-31 18:37:07,886 INFO L78 Accepts]: Start accepts. Automaton has 10016 states and 18148 transitions. Word has length 190 [2022-01-31 18:37:07,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:37:07,886 INFO L470 AbstractCegarLoop]: Abstraction has 10016 states and 18148 transitions. [2022-01-31 18:37:07,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 1.9) internal successors, (133), 69 states have internal predecessors, (133), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:37:07,886 INFO L276 IsEmpty]: Start isEmpty. Operand 10016 states and 18148 transitions. [2022-01-31 18:37:07,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-31 18:37:07,977 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:37:07,977 INFO L514 BasicCegarLoop]: trace histogram [30, 30, 30, 28, 10, 10, 9, 9, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:37:07,977 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-01-31 18:37:07,977 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:37:07,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:37:07,978 INFO L85 PathProgramCache]: Analyzing trace with hash 614475792, now seen corresponding path program 24 times [2022-01-31 18:37:07,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:37:07,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [480848196] [2022-01-31 18:37:07,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:37:07,979 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:37:07,979 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:37:07,979 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:37:07,981 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:37:08,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:08,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:37:08,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:08,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 18:37:08,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:08,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-01-31 18:37:08,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:08,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-31 18:37:08,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:10,159 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-01-31 18:37:10,159 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:37:10,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [480848196] [2022-01-31 18:37:10,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [480848196] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:37:10,159 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:37:10,159 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [66] imperfect sequences [] total 66 [2022-01-31 18:37:10,159 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502771935] [2022-01-31 18:37:10,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:37:10,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2022-01-31 18:37:10,160 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:37:10,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2022-01-31 18:37:10,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=4087, Unknown=0, NotChecked=0, Total=4290 [2022-01-31 18:37:10,161 INFO L87 Difference]: Start difference. First operand 10016 states and 18148 transitions. Second operand has 66 states, 65 states have (on average 1.7692307692307692) internal successors, (115), 64 states have internal predecessors, (115), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:37:16,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:37:16,333 INFO L93 Difference]: Finished difference Result 11026 states and 19827 transitions. [2022-01-31 18:37:16,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-01-31 18:37:16,334 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 65 states have (on average 1.7692307692307692) internal successors, (115), 64 states have internal predecessors, (115), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 190 [2022-01-31 18:37:16,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:37:16,391 INFO L225 Difference]: With dead ends: 11026 [2022-01-31 18:37:16,391 INFO L226 Difference]: Without dead ends: 11022 [2022-01-31 18:37:16,425 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4842 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=806, Invalid=16750, Unknown=0, NotChecked=0, Total=17556 [2022-01-31 18:37:16,426 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 189 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 3988 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 4106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 3988 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-31 18:37:16,426 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [189 Valid, 133 Invalid, 4106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 3988 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-31 18:37:16,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11022 states. [2022-01-31 18:37:19,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11022 to 10120. [2022-01-31 18:37:19,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10120 states, 9784 states have (on average 1.2422322158626329) internal successors, (12154), 10022 states have internal predecessors, (12154), 83 states have call successors, (83), 15 states have call predecessors, (83), 252 states have return successors, (6041), 82 states have call predecessors, (6041), 82 states have call successors, (6041) [2022-01-31 18:37:19,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10120 states to 10120 states and 18278 transitions. [2022-01-31 18:37:19,861 INFO L78 Accepts]: Start accepts. Automaton has 10120 states and 18278 transitions. Word has length 190 [2022-01-31 18:37:19,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:37:19,862 INFO L470 AbstractCegarLoop]: Abstraction has 10120 states and 18278 transitions. [2022-01-31 18:37:19,862 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 65 states have (on average 1.7692307692307692) internal successors, (115), 64 states have internal predecessors, (115), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:37:19,862 INFO L276 IsEmpty]: Start isEmpty. Operand 10120 states and 18278 transitions. [2022-01-31 18:37:19,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-31 18:37:19,943 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:37:19,943 INFO L514 BasicCegarLoop]: trace histogram [30, 30, 30, 27, 10, 10, 9, 9, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:37:19,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-01-31 18:37:19,944 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:37:19,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:37:19,944 INFO L85 PathProgramCache]: Analyzing trace with hash 833330510, now seen corresponding path program 25 times [2022-01-31 18:37:19,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:37:19,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1076700750] [2022-01-31 18:37:19,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:37:19,945 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:37:19,945 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:37:19,945 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:37:19,947 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:37:19,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:20,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:37:20,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:20,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 18:37:20,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:20,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-01-31 18:37:20,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:20,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-31 18:37:20,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:21,906 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-01-31 18:37:21,906 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:37:21,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1076700750] [2022-01-31 18:37:21,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1076700750] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:37:21,907 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:37:21,907 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [64] imperfect sequences [] total 64 [2022-01-31 18:37:21,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693337405] [2022-01-31 18:37:21,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:37:21,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-01-31 18:37:21,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:37:21,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-01-31 18:37:21,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=3835, Unknown=0, NotChecked=0, Total=4032 [2022-01-31 18:37:21,908 INFO L87 Difference]: Start difference. First operand 10120 states and 18278 transitions. Second operand has 64 states, 63 states have (on average 1.8253968253968254) internal successors, (115), 62 states have internal predecessors, (115), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:37:28,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:37:28,461 INFO L93 Difference]: Finished difference Result 11186 states and 19943 transitions. [2022-01-31 18:37:28,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-01-31 18:37:28,461 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 63 states have (on average 1.8253968253968254) internal successors, (115), 62 states have internal predecessors, (115), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 190 [2022-01-31 18:37:28,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:37:28,602 INFO L225 Difference]: With dead ends: 11186 [2022-01-31 18:37:28,602 INFO L226 Difference]: Without dead ends: 11182 [2022-01-31 18:37:28,641 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4451 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=780, Invalid=15732, Unknown=0, NotChecked=0, Total=16512 [2022-01-31 18:37:28,641 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 179 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 5189 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 5299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 5189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-01-31 18:37:28,641 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [179 Valid, 211 Invalid, 5299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 5189 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-01-31 18:37:28,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11182 states. [2022-01-31 18:37:31,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11182 to 10016. [2022-01-31 18:37:31,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10016 states, 9680 states have (on average 1.2421487603305785) internal successors, (12024), 9918 states have internal predecessors, (12024), 83 states have call successors, (83), 15 states have call predecessors, (83), 252 states have return successors, (6041), 82 states have call predecessors, (6041), 82 states have call successors, (6041) [2022-01-31 18:37:32,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10016 states to 10016 states and 18148 transitions. [2022-01-31 18:37:32,109 INFO L78 Accepts]: Start accepts. Automaton has 10016 states and 18148 transitions. Word has length 190 [2022-01-31 18:37:32,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:37:32,109 INFO L470 AbstractCegarLoop]: Abstraction has 10016 states and 18148 transitions. [2022-01-31 18:37:32,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 63 states have (on average 1.8253968253968254) internal successors, (115), 62 states have internal predecessors, (115), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:37:32,110 INFO L276 IsEmpty]: Start isEmpty. Operand 10016 states and 18148 transitions. [2022-01-31 18:37:32,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-31 18:37:32,191 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:37:32,191 INFO L514 BasicCegarLoop]: trace histogram [30, 30, 30, 27, 10, 10, 9, 9, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:37:32,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-01-31 18:37:32,191 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:37:32,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:37:32,191 INFO L85 PathProgramCache]: Analyzing trace with hash 637108046, now seen corresponding path program 26 times [2022-01-31 18:37:32,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:37:32,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [993380576] [2022-01-31 18:37:32,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:37:32,193 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:37:32,193 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:37:32,193 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:37:32,194 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:37:32,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:32,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:37:32,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:32,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 18:37:32,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:33,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-01-31 18:37:33,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:33,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-31 18:37:33,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:34,145 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-01-31 18:37:34,145 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:37:34,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [993380576] [2022-01-31 18:37:34,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [993380576] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:37:34,146 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:37:34,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [64] imperfect sequences [] total 64 [2022-01-31 18:37:34,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470866348] [2022-01-31 18:37:34,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:37:34,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-01-31 18:37:34,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:37:34,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-01-31 18:37:34,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=3835, Unknown=0, NotChecked=0, Total=4032 [2022-01-31 18:37:34,147 INFO L87 Difference]: Start difference. First operand 10016 states and 18148 transitions. Second operand has 64 states, 63 states have (on average 1.8253968253968254) internal successors, (115), 62 states have internal predecessors, (115), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:37:40,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:37:40,438 INFO L93 Difference]: Finished difference Result 10794 states and 19337 transitions. [2022-01-31 18:37:40,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-01-31 18:37:40,438 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 63 states have (on average 1.8253968253968254) internal successors, (115), 62 states have internal predecessors, (115), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 190 [2022-01-31 18:37:40,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:37:40,496 INFO L225 Difference]: With dead ends: 10794 [2022-01-31 18:37:40,496 INFO L226 Difference]: Without dead ends: 10790 [2022-01-31 18:37:40,532 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4443 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=780, Invalid=15732, Unknown=0, NotChecked=0, Total=16512 [2022-01-31 18:37:40,532 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 174 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 4416 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 4532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 4416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-31 18:37:40,532 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [174 Valid, 146 Invalid, 4532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 4416 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-01-31 18:37:40,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10790 states. [2022-01-31 18:37:43,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10790 to 9766. [2022-01-31 18:37:43,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9766 states, 9433 states have (on average 1.2418106646877982) internal successors, (11714), 9668 states have internal predecessors, (11714), 83 states have call successors, (83), 15 states have call predecessors, (83), 249 states have return successors, (5825), 82 states have call predecessors, (5825), 82 states have call successors, (5825) [2022-01-31 18:37:43,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9766 states to 9766 states and 17622 transitions. [2022-01-31 18:37:43,900 INFO L78 Accepts]: Start accepts. Automaton has 9766 states and 17622 transitions. Word has length 190 [2022-01-31 18:37:43,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:37:43,900 INFO L470 AbstractCegarLoop]: Abstraction has 9766 states and 17622 transitions. [2022-01-31 18:37:43,900 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 63 states have (on average 1.8253968253968254) internal successors, (115), 62 states have internal predecessors, (115), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:37:43,900 INFO L276 IsEmpty]: Start isEmpty. Operand 9766 states and 17622 transitions. [2022-01-31 18:37:43,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-31 18:37:43,980 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:37:43,980 INFO L514 BasicCegarLoop]: trace histogram [30, 30, 30, 26, 10, 10, 9, 9, 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] [2022-01-31 18:37:43,980 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-01-31 18:37:43,980 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:37:43,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:37:43,981 INFO L85 PathProgramCache]: Analyzing trace with hash 855962764, now seen corresponding path program 27 times [2022-01-31 18:37:43,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:37:43,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1772314897] [2022-01-31 18:37:43,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:37:43,982 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:37:43,982 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:37:43,982 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:37:43,984 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:37:44,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:44,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:37:44,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:44,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 18:37:44,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:44,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-01-31 18:37:44,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:44,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-31 18:37:44,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:45,898 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-01-31 18:37:45,899 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:37:45,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1772314897] [2022-01-31 18:37:45,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1772314897] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:37:45,900 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:37:45,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [62] imperfect sequences [] total 62 [2022-01-31 18:37:45,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041353426] [2022-01-31 18:37:45,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:37:45,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2022-01-31 18:37:45,900 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:37:45,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2022-01-31 18:37:45,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=3591, Unknown=0, NotChecked=0, Total=3782 [2022-01-31 18:37:45,901 INFO L87 Difference]: Start difference. First operand 9766 states and 17622 transitions. Second operand has 62 states, 61 states have (on average 1.8852459016393444) internal successors, (115), 60 states have internal predecessors, (115), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:37:52,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:37:52,411 INFO L93 Difference]: Finished difference Result 10792 states and 19237 transitions. [2022-01-31 18:37:52,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-01-31 18:37:52,411 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 61 states have (on average 1.8852459016393444) internal successors, (115), 60 states have internal predecessors, (115), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 190 [2022-01-31 18:37:52,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:37:52,472 INFO L225 Difference]: With dead ends: 10792 [2022-01-31 18:37:52,472 INFO L226 Difference]: Without dead ends: 10788 [2022-01-31 18:37:52,511 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4068 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=754, Invalid=14746, Unknown=0, NotChecked=0, Total=15500 [2022-01-31 18:37:52,511 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 171 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 4992 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 5106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 4992 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-01-31 18:37:52,512 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [171 Valid, 176 Invalid, 5106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 4992 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-01-31 18:37:52,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10788 states. [2022-01-31 18:37:55,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10788 to 9614. [2022-01-31 18:37:55,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9614 states, 9281 states have (on average 1.2416765434759185) internal successors, (11524), 9516 states have internal predecessors, (11524), 83 states have call successors, (83), 15 states have call predecessors, (83), 249 states have return successors, (5825), 82 states have call predecessors, (5825), 82 states have call successors, (5825) [2022-01-31 18:37:55,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9614 states to 9614 states and 17432 transitions. [2022-01-31 18:37:55,808 INFO L78 Accepts]: Start accepts. Automaton has 9614 states and 17432 transitions. Word has length 190 [2022-01-31 18:37:55,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:37:55,808 INFO L470 AbstractCegarLoop]: Abstraction has 9614 states and 17432 transitions. [2022-01-31 18:37:55,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 61 states have (on average 1.8852459016393444) internal successors, (115), 60 states have internal predecessors, (115), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:37:55,808 INFO L276 IsEmpty]: Start isEmpty. Operand 9614 states and 17432 transitions. [2022-01-31 18:37:55,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-31 18:37:55,887 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:37:55,887 INFO L514 BasicCegarLoop]: trace histogram [30, 30, 30, 26, 10, 10, 9, 9, 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] [2022-01-31 18:37:55,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-01-31 18:37:55,887 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:37:55,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:37:55,887 INFO L85 PathProgramCache]: Analyzing trace with hash 699147660, now seen corresponding path program 28 times [2022-01-31 18:37:55,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:37:55,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2134145215] [2022-01-31 18:37:55,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:37:55,888 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:37:55,888 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:37:55,889 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:37:55,890 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:37:55,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:56,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:37:56,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:56,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 18:37:56,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:56,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-01-31 18:37:56,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:56,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-31 18:37:56,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:57,745 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-01-31 18:37:57,745 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:37:57,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2134145215] [2022-01-31 18:37:57,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2134145215] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:37:57,746 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:37:57,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [62] imperfect sequences [] total 62 [2022-01-31 18:37:57,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809796684] [2022-01-31 18:37:57,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:37:57,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2022-01-31 18:37:57,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:37:57,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2022-01-31 18:37:57,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=3591, Unknown=0, NotChecked=0, Total=3782 [2022-01-31 18:37:57,747 INFO L87 Difference]: Start difference. First operand 9614 states and 17432 transitions. Second operand has 62 states, 61 states have (on average 1.8852459016393444) internal successors, (115), 60 states have internal predecessors, (115), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:38:04,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:38:04,662 INFO L93 Difference]: Finished difference Result 10504 states and 18809 transitions. [2022-01-31 18:38:04,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-01-31 18:38:04,662 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 61 states have (on average 1.8852459016393444) internal successors, (115), 60 states have internal predecessors, (115), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 190 [2022-01-31 18:38:04,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:38:04,720 INFO L225 Difference]: With dead ends: 10504 [2022-01-31 18:38:04,720 INFO L226 Difference]: Without dead ends: 10500 [2022-01-31 18:38:04,755 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4064 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=754, Invalid=14746, Unknown=0, NotChecked=0, Total=15500 [2022-01-31 18:38:04,755 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 145 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 6069 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 6160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 6069 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-01-31 18:38:04,755 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [145 Valid, 241 Invalid, 6160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 6069 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-01-31 18:38:04,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10500 states. [2022-01-31 18:38:08,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10500 to 9566. [2022-01-31 18:38:08,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9566 states, 9233 states have (on average 1.2416332719592764) internal successors, (11464), 9468 states have internal predecessors, (11464), 83 states have call successors, (83), 15 states have call predecessors, (83), 249 states have return successors, (5751), 82 states have call predecessors, (5751), 82 states have call successors, (5751) [2022-01-31 18:38:08,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9566 states to 9566 states and 17298 transitions. [2022-01-31 18:38:08,327 INFO L78 Accepts]: Start accepts. Automaton has 9566 states and 17298 transitions. Word has length 190 [2022-01-31 18:38:08,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:38:08,327 INFO L470 AbstractCegarLoop]: Abstraction has 9566 states and 17298 transitions. [2022-01-31 18:38:08,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 61 states have (on average 1.8852459016393444) internal successors, (115), 60 states have internal predecessors, (115), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:38:08,328 INFO L276 IsEmpty]: Start isEmpty. Operand 9566 states and 17298 transitions. [2022-01-31 18:38:08,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-31 18:38:08,409 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:38:08,409 INFO L514 BasicCegarLoop]: trace histogram [30, 30, 30, 25, 10, 10, 9, 9, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:38:08,409 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-01-31 18:38:08,409 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:38:08,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:38:08,410 INFO L85 PathProgramCache]: Analyzing trace with hash 918002378, now seen corresponding path program 29 times [2022-01-31 18:38:08,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:38:08,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [715332755] [2022-01-31 18:38:08,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:38:08,411 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:38:08,411 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:38:08,411 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:38:08,413 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:38:08,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:08,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:38:08,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:08,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 18:38:08,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:09,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-01-31 18:38:09,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:09,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-31 18:38:09,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:10,257 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-01-31 18:38:10,258 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:38:10,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [715332755] [2022-01-31 18:38:10,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [715332755] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:38:10,258 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:38:10,258 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [60] imperfect sequences [] total 60 [2022-01-31 18:38:10,258 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232011949] [2022-01-31 18:38:10,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:38:10,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2022-01-31 18:38:10,258 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:38:10,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2022-01-31 18:38:10,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=3355, Unknown=0, NotChecked=0, Total=3540 [2022-01-31 18:38:10,260 INFO L87 Difference]: Start difference. First operand 9566 states and 17298 transitions. Second operand has 60 states, 59 states have (on average 1.9491525423728813) internal successors, (115), 58 states have internal predecessors, (115), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:38:16,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:38:16,817 INFO L93 Difference]: Finished difference Result 10464 states and 18671 transitions. [2022-01-31 18:38:16,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-01-31 18:38:16,817 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 59 states have (on average 1.9491525423728813) internal successors, (115), 58 states have internal predecessors, (115), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 190 [2022-01-31 18:38:16,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:38:16,871 INFO L225 Difference]: With dead ends: 10464 [2022-01-31 18:38:16,871 INFO L226 Difference]: Without dead ends: 10460 [2022-01-31 18:38:16,908 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3705 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=728, Invalid=13792, Unknown=0, NotChecked=0, Total=14520 [2022-01-31 18:38:16,908 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 184 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 4703 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 4816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 4703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-01-31 18:38:16,909 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [184 Valid, 166 Invalid, 4816 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 4703 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-01-31 18:38:16,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10460 states. [2022-01-31 18:38:20,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10460 to 9406. [2022-01-31 18:38:20,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9406 states, 9073 states have (on average 1.2414857268819575) internal successors, (11264), 9308 states have internal predecessors, (11264), 83 states have call successors, (83), 15 states have call predecessors, (83), 249 states have return successors, (5671), 82 states have call predecessors, (5671), 82 states have call successors, (5671) [2022-01-31 18:38:20,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9406 states to 9406 states and 17018 transitions. [2022-01-31 18:38:20,419 INFO L78 Accepts]: Start accepts. Automaton has 9406 states and 17018 transitions. Word has length 190 [2022-01-31 18:38:20,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:38:20,420 INFO L470 AbstractCegarLoop]: Abstraction has 9406 states and 17018 transitions. [2022-01-31 18:38:20,420 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 59 states have (on average 1.9491525423728813) internal successors, (115), 58 states have internal predecessors, (115), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:38:20,420 INFO L276 IsEmpty]: Start isEmpty. Operand 9406 states and 17018 transitions. [2022-01-31 18:38:20,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-31 18:38:20,505 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:38:20,505 INFO L514 BasicCegarLoop]: trace histogram [30, 30, 30, 24, 10, 10, 9, 9, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:38:20,505 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-01-31 18:38:20,505 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:38:20,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:38:20,505 INFO L85 PathProgramCache]: Analyzing trace with hash -1076142328, now seen corresponding path program 30 times [2022-01-31 18:38:20,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:38:20,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [662236967] [2022-01-31 18:38:20,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:38:20,507 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:38:20,507 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:38:20,507 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:38:20,509 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:38:20,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:21,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:38:21,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:21,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 18:38:21,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:21,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-01-31 18:38:21,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:21,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-31 18:38:21,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:22,270 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-01-31 18:38:22,270 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:38:22,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [662236967] [2022-01-31 18:38:22,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [662236967] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:38:22,271 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:38:22,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [58] imperfect sequences [] total 58 [2022-01-31 18:38:22,271 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507648701] [2022-01-31 18:38:22,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:38:22,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-01-31 18:38:22,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:38:22,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-01-31 18:38:22,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=3127, Unknown=0, NotChecked=0, Total=3306 [2022-01-31 18:38:22,272 INFO L87 Difference]: Start difference. First operand 9406 states and 17018 transitions. Second operand has 58 states, 57 states have (on average 2.017543859649123) internal successors, (115), 56 states have internal predecessors, (115), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:38:28,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:38:28,990 INFO L93 Difference]: Finished difference Result 10430 states and 18565 transitions. [2022-01-31 18:38:28,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-01-31 18:38:28,991 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 57 states have (on average 2.017543859649123) internal successors, (115), 56 states have internal predecessors, (115), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 190 [2022-01-31 18:38:28,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:38:29,051 INFO L225 Difference]: With dead ends: 10430 [2022-01-31 18:38:29,051 INFO L226 Difference]: Without dead ends: 10426 [2022-01-31 18:38:29,085 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3366 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=702, Invalid=12870, Unknown=0, NotChecked=0, Total=13572 [2022-01-31 18:38:29,086 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 154 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 5008 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 5102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 5008 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-01-31 18:38:29,086 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [154 Valid, 180 Invalid, 5102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 5008 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-01-31 18:38:29,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10426 states. [2022-01-31 18:38:32,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10426 to 9364. [2022-01-31 18:38:32,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9364 states, 9031 states have (on average 1.241944413686192) internal successors, (11216), 9266 states have internal predecessors, (11216), 83 states have call successors, (83), 15 states have call predecessors, (83), 249 states have return successors, (5609), 82 states have call predecessors, (5609), 82 states have call successors, (5609) [2022-01-31 18:38:32,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9364 states to 9364 states and 16908 transitions. [2022-01-31 18:38:32,508 INFO L78 Accepts]: Start accepts. Automaton has 9364 states and 16908 transitions. Word has length 190 [2022-01-31 18:38:32,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:38:32,508 INFO L470 AbstractCegarLoop]: Abstraction has 9364 states and 16908 transitions. [2022-01-31 18:38:32,509 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 57 states have (on average 2.017543859649123) internal successors, (115), 56 states have internal predecessors, (115), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:38:32,509 INFO L276 IsEmpty]: Start isEmpty. Operand 9364 states and 16908 transitions. [2022-01-31 18:38:32,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-31 18:38:32,598 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:38:32,599 INFO L514 BasicCegarLoop]: trace histogram [30, 30, 30, 23, 10, 10, 9, 9, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:38:32,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-01-31 18:38:32,599 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:38:32,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:38:32,599 INFO L85 PathProgramCache]: Analyzing trace with hash -2087259578, now seen corresponding path program 31 times [2022-01-31 18:38:32,599 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:38:32,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [866560234] [2022-01-31 18:38:32,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:38:32,600 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:38:32,600 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:38:32,601 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:38:32,602 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:38:32,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:33,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:38:33,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:33,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 18:38:33,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:33,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-01-31 18:38:33,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:33,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-31 18:38:33,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:34,251 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-01-31 18:38:34,252 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:38:34,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [866560234] [2022-01-31 18:38:34,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [866560234] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:38:34,252 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:38:34,252 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [56] imperfect sequences [] total 56 [2022-01-31 18:38:34,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287414056] [2022-01-31 18:38:34,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:38:34,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-01-31 18:38:34,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:38:34,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-01-31 18:38:34,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=2907, Unknown=0, NotChecked=0, Total=3080 [2022-01-31 18:38:34,253 INFO L87 Difference]: Start difference. First operand 9364 states and 16908 transitions. Second operand has 56 states, 55 states have (on average 2.090909090909091) internal successors, (115), 54 states have internal predecessors, (115), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:38:40,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:38:40,647 INFO L93 Difference]: Finished difference Result 10454 states and 18513 transitions. [2022-01-31 18:38:40,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-01-31 18:38:40,647 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 55 states have (on average 2.090909090909091) internal successors, (115), 54 states have internal predecessors, (115), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 190 [2022-01-31 18:38:40,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:38:40,705 INFO L225 Difference]: With dead ends: 10454 [2022-01-31 18:38:40,705 INFO L226 Difference]: Without dead ends: 10450 [2022-01-31 18:38:40,742 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3047 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=676, Invalid=11980, Unknown=0, NotChecked=0, Total=12656 [2022-01-31 18:38:40,743 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 159 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 4198 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 4301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 4198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-31 18:38:40,743 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [159 Valid, 142 Invalid, 4301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 4198 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-01-31 18:38:40,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10450 states. [2022-01-31 18:38:44,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10450 to 9362. [2022-01-31 18:38:44,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9362 states, 9035 states have (on average 1.2422800221361372) internal successors, (11224), 9264 states have internal predecessors, (11224), 83 states have call successors, (83), 15 states have call predecessors, (83), 243 states have return successors, (5497), 82 states have call predecessors, (5497), 82 states have call successors, (5497) [2022-01-31 18:38:44,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9362 states to 9362 states and 16804 transitions. [2022-01-31 18:38:44,223 INFO L78 Accepts]: Start accepts. Automaton has 9362 states and 16804 transitions. Word has length 190 [2022-01-31 18:38:44,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:38:44,224 INFO L470 AbstractCegarLoop]: Abstraction has 9362 states and 16804 transitions. [2022-01-31 18:38:44,224 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 55 states have (on average 2.090909090909091) internal successors, (115), 54 states have internal predecessors, (115), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:38:44,224 INFO L276 IsEmpty]: Start isEmpty. Operand 9362 states and 16804 transitions. [2022-01-31 18:38:44,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-31 18:38:44,303 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:38:44,303 INFO L514 BasicCegarLoop]: trace histogram [30, 30, 30, 22, 10, 10, 9, 9, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:38:44,304 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-01-31 18:38:44,304 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:38:44,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:38:44,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1814680708, now seen corresponding path program 32 times [2022-01-31 18:38:44,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:38:44,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1285758222] [2022-01-31 18:38:44,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:38:44,306 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:38:44,306 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:38:44,306 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:38:44,308 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:38:44,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:44,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:38:44,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:44,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 18:38:44,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:44,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-01-31 18:38:44,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:45,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-31 18:38:45,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:45,713 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-31 18:38:45,714 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:38:45,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1285758222] [2022-01-31 18:38:45,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1285758222] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:38:45,714 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:38:45,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [49] imperfect sequences [] total 49 [2022-01-31 18:38:45,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019803396] [2022-01-31 18:38:45,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:38:45,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-01-31 18:38:45,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:38:45,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-01-31 18:38:45,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=2206, Unknown=0, NotChecked=0, Total=2352 [2022-01-31 18:38:45,715 INFO L87 Difference]: Start difference. First operand 9362 states and 16804 transitions. Second operand has 49 states, 49 states have (on average 2.2448979591836733) internal successors, (110), 47 states have internal predecessors, (110), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-01-31 18:38:56,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:38:56,111 INFO L93 Difference]: Finished difference Result 21179 states and 43370 transitions. [2022-01-31 18:38:56,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2022-01-31 18:38:56,111 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.2448979591836733) internal successors, (110), 47 states have internal predecessors, (110), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 190 [2022-01-31 18:38:56,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:38:56,463 INFO L225 Difference]: With dead ends: 21179 [2022-01-31 18:38:56,464 INFO L226 Difference]: Without dead ends: 21175 [2022-01-31 18:38:56,566 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5241 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=959, Invalid=15553, Unknown=0, NotChecked=0, Total=16512 [2022-01-31 18:38:56,567 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 132 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 3542 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 3622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 3542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-31 18:38:56,567 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [132 Valid, 124 Invalid, 3622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 3542 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-31 18:38:56,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21175 states. [2022-01-31 18:39:06,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21175 to 18181. [2022-01-31 18:39:06,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18181 states, 17548 states have (on average 1.2424207886938683) internal successors, (21802), 17997 states have internal predecessors, (21802), 157 states have call successors, (157), 27 states have call predecessors, (157), 475 states have return successors, (15017), 156 states have call predecessors, (15017), 156 states have call successors, (15017) [2022-01-31 18:39:06,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18181 states to 18181 states and 36976 transitions. [2022-01-31 18:39:06,600 INFO L78 Accepts]: Start accepts. Automaton has 18181 states and 36976 transitions. Word has length 190 [2022-01-31 18:39:06,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:39:06,600 INFO L470 AbstractCegarLoop]: Abstraction has 18181 states and 36976 transitions. [2022-01-31 18:39:06,600 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.2448979591836733) internal successors, (110), 47 states have internal predecessors, (110), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-01-31 18:39:06,600 INFO L276 IsEmpty]: Start isEmpty. Operand 18181 states and 36976 transitions. [2022-01-31 18:39:06,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-31 18:39:06,827 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:39:06,827 INFO L514 BasicCegarLoop]: trace histogram [30, 30, 30, 28, 10, 10, 9, 9, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:39:06,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-01-31 18:39:06,827 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:39:06,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:39:06,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1829099792, now seen corresponding path program 33 times [2022-01-31 18:39:06,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:39:06,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2112758991] [2022-01-31 18:39:06,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:39:06,829 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:39:06,829 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:39:06,829 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:39:06,830 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:39:06,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:39:07,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:39:07,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:39:07,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 18:39:07,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:39:07,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-01-31 18:39:07,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:39:07,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-31 18:39:07,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:39:08,976 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-01-31 18:39:08,976 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:39:08,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2112758991] [2022-01-31 18:39:08,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2112758991] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:39:08,976 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:39:08,976 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [67] imperfect sequences [] total 67 [2022-01-31 18:39:08,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645980140] [2022-01-31 18:39:08,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:39:08,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2022-01-31 18:39:08,977 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:39:08,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2022-01-31 18:39:08,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=4216, Unknown=0, NotChecked=0, Total=4422 [2022-01-31 18:39:08,978 INFO L87 Difference]: Start difference. First operand 18181 states and 36976 transitions. Second operand has 67 states, 66 states have (on average 1.7575757575757576) internal successors, (116), 65 states have internal predecessors, (116), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:39:20,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:39:20,463 INFO L93 Difference]: Finished difference Result 21042 states and 42239 transitions. [2022-01-31 18:39:20,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2022-01-31 18:39:20,464 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 66 states have (on average 1.7575757575757576) internal successors, (116), 65 states have internal predecessors, (116), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 190 [2022-01-31 18:39:20,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:39:20,685 INFO L225 Difference]: With dead ends: 21042 [2022-01-31 18:39:20,685 INFO L226 Difference]: Without dead ends: 21038 [2022-01-31 18:39:20,772 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8404 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=1061, Invalid=25999, Unknown=0, NotChecked=0, Total=27060 [2022-01-31 18:39:20,772 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 221 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 4636 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 4754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 4636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-01-31 18:39:20,772 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [221 Valid, 168 Invalid, 4754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 4636 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-01-31 18:39:20,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21038 states. [2022-01-31 18:39:31,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21038 to 18689. [2022-01-31 18:39:31,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18689 states, 18053 states have (on average 1.242674347753836) internal successors, (22434), 18505 states have internal predecessors, (22434), 157 states have call successors, (157), 27 states have call predecessors, (157), 478 states have return successors, (15350), 156 states have call predecessors, (15350), 156 states have call successors, (15350) [2022-01-31 18:39:31,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18689 states to 18689 states and 37941 transitions. [2022-01-31 18:39:31,186 INFO L78 Accepts]: Start accepts. Automaton has 18689 states and 37941 transitions. Word has length 190 [2022-01-31 18:39:31,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:39:31,187 INFO L470 AbstractCegarLoop]: Abstraction has 18689 states and 37941 transitions. [2022-01-31 18:39:31,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 66 states have (on average 1.7575757575757576) internal successors, (116), 65 states have internal predecessors, (116), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:39:31,187 INFO L276 IsEmpty]: Start isEmpty. Operand 18689 states and 37941 transitions. [2022-01-31 18:39:31,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-31 18:39:31,405 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:39:31,405 INFO L514 BasicCegarLoop]: trace histogram [30, 30, 30, 27, 10, 10, 9, 9, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:39:31,405 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-01-31 18:39:31,405 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:39:31,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:39:31,406 INFO L85 PathProgramCache]: Analyzing trace with hash 2047954510, now seen corresponding path program 34 times [2022-01-31 18:39:31,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:39:31,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [344753837] [2022-01-31 18:39:31,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:39:31,407 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:39:31,407 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:39:31,407 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:39:31,410 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:39:31,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:39:32,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:39:32,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:39:32,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 18:39:32,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:39:32,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-01-31 18:39:32,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:39:32,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-31 18:39:32,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:39:33,494 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-01-31 18:39:33,494 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:39:33,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [344753837] [2022-01-31 18:39:33,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [344753837] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:39:33,494 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:39:33,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [65] imperfect sequences [] total 65 [2022-01-31 18:39:33,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948742131] [2022-01-31 18:39:33,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:39:33,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2022-01-31 18:39:33,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:39:33,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2022-01-31 18:39:33,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=3960, Unknown=0, NotChecked=0, Total=4160 [2022-01-31 18:39:33,496 INFO L87 Difference]: Start difference. First operand 18689 states and 37941 transitions. Second operand has 65 states, 64 states have (on average 1.8125) internal successors, (116), 63 states have internal predecessors, (116), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:39:45,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:39:45,680 INFO L93 Difference]: Finished difference Result 21494 states and 42817 transitions. [2022-01-31 18:39:45,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2022-01-31 18:39:45,681 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 64 states have (on average 1.8125) internal successors, (116), 63 states have internal predecessors, (116), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 190 [2022-01-31 18:39:45,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:39:45,828 INFO L225 Difference]: With dead ends: 21494 [2022-01-31 18:39:45,828 INFO L226 Difference]: Without dead ends: 21490 [2022-01-31 18:39:45,926 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7647 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=1016, Invalid=24106, Unknown=0, NotChecked=0, Total=25122 [2022-01-31 18:39:45,926 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 217 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 5824 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 5941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 5824 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:39:45,926 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [217 Valid, 235 Invalid, 5941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 5824 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-01-31 18:39:45,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21490 states. [2022-01-31 18:39:56,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21490 to 18873. [2022-01-31 18:39:56,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18873 states, 18237 states have (on average 1.2427482590338323) internal successors, (22664), 18689 states have internal predecessors, (22664), 157 states have call successors, (157), 27 states have call predecessors, (157), 478 states have return successors, (15374), 156 states have call predecessors, (15374), 156 states have call successors, (15374) [2022-01-31 18:39:56,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18873 states to 18873 states and 38195 transitions. [2022-01-31 18:39:56,299 INFO L78 Accepts]: Start accepts. Automaton has 18873 states and 38195 transitions. Word has length 190 [2022-01-31 18:39:56,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:39:56,300 INFO L470 AbstractCegarLoop]: Abstraction has 18873 states and 38195 transitions. [2022-01-31 18:39:56,300 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 64 states have (on average 1.8125) internal successors, (116), 63 states have internal predecessors, (116), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:39:56,300 INFO L276 IsEmpty]: Start isEmpty. Operand 18873 states and 38195 transitions. [2022-01-31 18:39:56,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-31 18:39:56,543 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:39:56,543 INFO L514 BasicCegarLoop]: trace histogram [30, 30, 30, 27, 10, 10, 9, 9, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:39:56,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-01-31 18:39:56,543 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:39:56,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:39:56,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1851732046, now seen corresponding path program 35 times [2022-01-31 18:39:56,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:39:56,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1289041864] [2022-01-31 18:39:56,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:39:56,545 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:39:56,545 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:39:56,545 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:39:56,547 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:39:56,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:39:57,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:39:57,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:39:57,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 18:39:57,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:39:57,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-01-31 18:39:57,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:39:57,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-31 18:39:57,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:39:58,634 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-01-31 18:39:58,634 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:39:58,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1289041864] [2022-01-31 18:39:58,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1289041864] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:39:58,635 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:39:58,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [65] imperfect sequences [] total 65 [2022-01-31 18:39:58,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497525531] [2022-01-31 18:39:58,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:39:58,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2022-01-31 18:39:58,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:39:58,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2022-01-31 18:39:58,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=3960, Unknown=0, NotChecked=0, Total=4160 [2022-01-31 18:39:58,636 INFO L87 Difference]: Start difference. First operand 18873 states and 38195 transitions. Second operand has 65 states, 64 states have (on average 1.8125) internal successors, (116), 63 states have internal predecessors, (116), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:40:11,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:40:11,195 INFO L93 Difference]: Finished difference Result 22046 states and 43579 transitions. [2022-01-31 18:40:11,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2022-01-31 18:40:11,196 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 64 states have (on average 1.8125) internal successors, (116), 63 states have internal predecessors, (116), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 190 [2022-01-31 18:40:11,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:40:11,457 INFO L225 Difference]: With dead ends: 22046 [2022-01-31 18:40:11,457 INFO L226 Difference]: Without dead ends: 22042 [2022-01-31 18:40:11,544 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7639 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=1016, Invalid=24106, Unknown=0, NotChecked=0, Total=25122 [2022-01-31 18:40:11,544 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 206 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 5728 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 5839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 5728 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:40:11,545 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [206 Valid, 215 Invalid, 5839 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 5728 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-01-31 18:40:11,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22042 states. [2022-01-31 18:40:21,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22042 to 19639. [2022-01-31 18:40:21,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19639 states, 19001 states have (on average 1.2430924688174307) internal successors, (23620), 19455 states have internal predecessors, (23620), 157 states have call successors, (157), 27 states have call predecessors, (157), 480 states have return successors, (15506), 156 states have call predecessors, (15506), 156 states have call successors, (15506) [2022-01-31 18:40:21,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19639 states to 19639 states and 39283 transitions. [2022-01-31 18:40:21,734 INFO L78 Accepts]: Start accepts. Automaton has 19639 states and 39283 transitions. Word has length 190 [2022-01-31 18:40:21,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:40:21,734 INFO L470 AbstractCegarLoop]: Abstraction has 19639 states and 39283 transitions. [2022-01-31 18:40:21,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 64 states have (on average 1.8125) internal successors, (116), 63 states have internal predecessors, (116), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:40:21,734 INFO L276 IsEmpty]: Start isEmpty. Operand 19639 states and 39283 transitions. [2022-01-31 18:40:21,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-31 18:40:21,970 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:40:21,970 INFO L514 BasicCegarLoop]: trace histogram [30, 30, 30, 26, 10, 10, 9, 9, 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] [2022-01-31 18:40:21,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-01-31 18:40:21,971 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:40:21,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:40:21,971 INFO L85 PathProgramCache]: Analyzing trace with hash 2070586764, now seen corresponding path program 36 times [2022-01-31 18:40:21,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:40:21,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [863294445] [2022-01-31 18:40:21,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:40:21,972 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:40:21,972 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:40:21,972 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:40:21,974 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:40:22,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:22,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:40:22,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:22,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 18:40:22,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:22,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-01-31 18:40:22,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:22,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-31 18:40:22,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:23,924 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-01-31 18:40:23,924 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:40:23,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [863294445] [2022-01-31 18:40:23,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [863294445] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:40:23,925 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:40:23,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [63] imperfect sequences [] total 63 [2022-01-31 18:40:23,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9063544] [2022-01-31 18:40:23,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:40:23,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-01-31 18:40:23,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:40:23,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-01-31 18:40:23,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=3712, Unknown=0, NotChecked=0, Total=3906 [2022-01-31 18:40:23,926 INFO L87 Difference]: Start difference. First operand 19639 states and 39283 transitions. Second operand has 63 states, 62 states have (on average 1.8709677419354838) internal successors, (116), 61 states have internal predecessors, (116), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:40:36,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:40:36,172 INFO L93 Difference]: Finished difference Result 23086 states and 45147 transitions. [2022-01-31 18:40:36,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2022-01-31 18:40:36,173 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 62 states have (on average 1.8709677419354838) internal successors, (116), 61 states have internal predecessors, (116), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 190 [2022-01-31 18:40:36,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:40:36,321 INFO L225 Difference]: With dead ends: 23086 [2022-01-31 18:40:36,322 INFO L226 Difference]: Without dead ends: 23082 [2022-01-31 18:40:36,419 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6918 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=971, Invalid=22285, Unknown=0, NotChecked=0, Total=23256 [2022-01-31 18:40:36,420 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 215 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 4460 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 4583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 4460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-01-31 18:40:36,420 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [215 Valid, 146 Invalid, 4583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 4460 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-01-31 18:40:36,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23082 states. [2022-01-31 18:40:46,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23082 to 20365. [2022-01-31 18:40:46,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20365 states, 19725 states have (on average 1.2433967046894803) internal successors, (24526), 20181 states have internal predecessors, (24526), 157 states have call successors, (157), 27 states have call predecessors, (157), 482 states have return successors, (15596), 156 states have call predecessors, (15596), 156 states have call successors, (15596) [2022-01-31 18:40:46,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20365 states to 20365 states and 40279 transitions. [2022-01-31 18:40:46,860 INFO L78 Accepts]: Start accepts. Automaton has 20365 states and 40279 transitions. Word has length 190 [2022-01-31 18:40:46,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:40:46,860 INFO L470 AbstractCegarLoop]: Abstraction has 20365 states and 40279 transitions. [2022-01-31 18:40:46,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 62 states have (on average 1.8709677419354838) internal successors, (116), 61 states have internal predecessors, (116), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:40:46,861 INFO L276 IsEmpty]: Start isEmpty. Operand 20365 states and 40279 transitions. [2022-01-31 18:40:47,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-31 18:40:47,084 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:40:47,084 INFO L514 BasicCegarLoop]: trace histogram [30, 30, 30, 26, 10, 10, 9, 9, 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] [2022-01-31 18:40:47,084 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2022-01-31 18:40:47,084 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:40:47,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:40:47,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1913771660, now seen corresponding path program 37 times [2022-01-31 18:40:47,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:40:47,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1497611869] [2022-01-31 18:40:47,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:40:47,086 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:40:47,086 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:40:47,086 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:40:47,087 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:40:47,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:47,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:40:47,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:47,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 18:40:47,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:48,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-01-31 18:40:48,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:48,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-31 18:40:48,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:49,083 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-01-31 18:40:49,084 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:40:49,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1497611869] [2022-01-31 18:40:49,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1497611869] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:40:49,084 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:40:49,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [63] imperfect sequences [] total 63 [2022-01-31 18:40:49,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553800115] [2022-01-31 18:40:49,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:40:49,084 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-01-31 18:40:49,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:40:49,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-01-31 18:40:49,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=3712, Unknown=0, NotChecked=0, Total=3906 [2022-01-31 18:40:49,085 INFO L87 Difference]: Start difference. First operand 20365 states and 40279 transitions. Second operand has 63 states, 62 states have (on average 1.8709677419354838) internal successors, (116), 61 states have internal predecessors, (116), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:41:01,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:41:01,036 INFO L93 Difference]: Finished difference Result 23182 states and 45333 transitions. [2022-01-31 18:41:01,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2022-01-31 18:41:01,037 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 62 states have (on average 1.8709677419354838) internal successors, (116), 61 states have internal predecessors, (116), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 190 [2022-01-31 18:41:01,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:41:01,188 INFO L225 Difference]: With dead ends: 23182 [2022-01-31 18:41:01,188 INFO L226 Difference]: Without dead ends: 23178 [2022-01-31 18:41:01,284 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6914 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=971, Invalid=22285, Unknown=0, NotChecked=0, Total=23256 [2022-01-31 18:41:01,284 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 204 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 4433 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 4540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 4433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-01-31 18:41:01,284 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [204 Valid, 157 Invalid, 4540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 4433 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-01-31 18:41:01,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23178 states. [2022-01-31 18:41:11,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23178 to 20659. [2022-01-31 18:41:11,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20659 states, 20017 states have (on average 1.2435429884598093) internal successors, (24892), 20475 states have internal predecessors, (24892), 157 states have call successors, (157), 27 states have call predecessors, (157), 484 states have return successors, (15722), 156 states have call predecessors, (15722), 156 states have call successors, (15722) [2022-01-31 18:41:11,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20659 states to 20659 states and 40771 transitions. [2022-01-31 18:41:11,703 INFO L78 Accepts]: Start accepts. Automaton has 20659 states and 40771 transitions. Word has length 190 [2022-01-31 18:41:11,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:41:11,703 INFO L470 AbstractCegarLoop]: Abstraction has 20659 states and 40771 transitions. [2022-01-31 18:41:11,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 62 states have (on average 1.8709677419354838) internal successors, (116), 61 states have internal predecessors, (116), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:41:11,703 INFO L276 IsEmpty]: Start isEmpty. Operand 20659 states and 40771 transitions. [2022-01-31 18:41:11,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-31 18:41:11,929 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:41:11,930 INFO L514 BasicCegarLoop]: trace histogram [30, 30, 30, 25, 10, 10, 9, 9, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:41:11,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2022-01-31 18:41:11,930 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:41:11,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:41:11,930 INFO L85 PathProgramCache]: Analyzing trace with hash 2132626378, now seen corresponding path program 38 times [2022-01-31 18:41:11,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:41:11,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [952899460] [2022-01-31 18:41:11,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:41:11,932 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:41:11,932 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:41:11,932 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:41:11,934 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:41:11,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:41:12,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:41:12,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:41:12,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 18:41:12,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:41:12,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-01-31 18:41:12,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:41:12,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-31 18:41:12,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:41:13,719 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-01-31 18:41:13,720 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:41:13,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [952899460] [2022-01-31 18:41:13,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [952899460] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:41:13,720 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:41:13,720 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [61] imperfect sequences [] total 61 [2022-01-31 18:41:13,720 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128995089] [2022-01-31 18:41:13,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:41:13,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-01-31 18:41:13,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:41:13,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-01-31 18:41:13,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=3472, Unknown=0, NotChecked=0, Total=3660 [2022-01-31 18:41:13,721 INFO L87 Difference]: Start difference. First operand 20659 states and 40771 transitions. Second operand has 61 states, 60 states have (on average 1.9333333333333333) internal successors, (116), 59 states have internal predecessors, (116), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:41:26,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:41:26,197 INFO L93 Difference]: Finished difference Result 23860 states and 46415 transitions. [2022-01-31 18:41:26,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2022-01-31 18:41:26,198 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 60 states have (on average 1.9333333333333333) internal successors, (116), 59 states have internal predecessors, (116), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 190 [2022-01-31 18:41:26,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:41:26,355 INFO L225 Difference]: With dead ends: 23860 [2022-01-31 18:41:26,355 INFO L226 Difference]: Without dead ends: 23856 [2022-01-31 18:41:26,598 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6229 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=926, Invalid=20536, Unknown=0, NotChecked=0, Total=21462 [2022-01-31 18:41:26,599 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 206 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 5363 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 5477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 5363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-01-31 18:41:26,599 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [206 Valid, 202 Invalid, 5477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 5363 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-01-31 18:41:26,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23856 states. [2022-01-31 18:41:36,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23856 to 20675. [2022-01-31 18:41:36,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20675 states, 20033 states have (on average 1.2435481455598263) internal successors, (24912), 20491 states have internal predecessors, (24912), 157 states have call successors, (157), 27 states have call predecessors, (157), 484 states have return successors, (15722), 156 states have call predecessors, (15722), 156 states have call successors, (15722) [2022-01-31 18:41:36,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20675 states to 20675 states and 40791 transitions. [2022-01-31 18:41:36,974 INFO L78 Accepts]: Start accepts. Automaton has 20675 states and 40791 transitions. Word has length 190 [2022-01-31 18:41:36,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:41:36,974 INFO L470 AbstractCegarLoop]: Abstraction has 20675 states and 40791 transitions. [2022-01-31 18:41:36,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 60 states have (on average 1.9333333333333333) internal successors, (116), 59 states have internal predecessors, (116), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:41:36,975 INFO L276 IsEmpty]: Start isEmpty. Operand 20675 states and 40791 transitions. [2022-01-31 18:41:37,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-31 18:41:37,213 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:41:37,213 INFO L514 BasicCegarLoop]: trace histogram [30, 30, 30, 24, 10, 10, 9, 9, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:41:37,213 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2022-01-31 18:41:37,213 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:41:37,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:41:37,213 INFO L85 PathProgramCache]: Analyzing trace with hash 138481672, now seen corresponding path program 39 times [2022-01-31 18:41:37,213 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:41:37,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [756802457] [2022-01-31 18:41:37,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:41:37,215 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:41:37,215 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:41:37,215 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:41:37,216 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:41:37,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:41:37,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:41:37,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:41:37,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 18:41:37,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:41:38,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-01-31 18:41:38,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:41:38,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-31 18:41:38,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:41:38,925 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-01-31 18:41:38,925 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:41:38,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [756802457] [2022-01-31 18:41:38,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [756802457] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:41:38,926 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:41:38,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [59] imperfect sequences [] total 59 [2022-01-31 18:41:38,926 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197436658] [2022-01-31 18:41:38,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:41:38,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-01-31 18:41:38,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:41:38,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-01-31 18:41:38,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=3240, Unknown=0, NotChecked=0, Total=3422 [2022-01-31 18:41:38,927 INFO L87 Difference]: Start difference. First operand 20675 states and 40791 transitions. Second operand has 59 states, 58 states have (on average 2.0) internal successors, (116), 57 states have internal predecessors, (116), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:41:51,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:41:51,029 INFO L93 Difference]: Finished difference Result 23820 states and 46261 transitions. [2022-01-31 18:41:51,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2022-01-31 18:41:51,029 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 58 states have (on average 2.0) internal successors, (116), 57 states have internal predecessors, (116), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 190 [2022-01-31 18:41:51,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:41:51,187 INFO L225 Difference]: With dead ends: 23820 [2022-01-31 18:41:51,187 INFO L226 Difference]: Without dead ends: 23816 [2022-01-31 18:41:51,289 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5584 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=881, Invalid=18859, Unknown=0, NotChecked=0, Total=19740 [2022-01-31 18:41:51,289 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 208 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 4203 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 4328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 4203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-31 18:41:51,289 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [208 Valid, 141 Invalid, 4328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 4203 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-01-31 18:41:51,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23816 states. [2022-01-31 18:42:02,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23816 to 20865. [2022-01-31 18:42:02,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20865 states, 20221 states have (on average 1.2436575837001138) internal successors, (25148), 20681 states have internal predecessors, (25148), 157 states have call successors, (157), 27 states have call predecessors, (157), 486 states have return successors, (15800), 156 states have call predecessors, (15800), 156 states have call successors, (15800) [2022-01-31 18:42:02,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20865 states to 20865 states and 41105 transitions. [2022-01-31 18:42:02,156 INFO L78 Accepts]: Start accepts. Automaton has 20865 states and 41105 transitions. Word has length 190 [2022-01-31 18:42:02,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:42:02,157 INFO L470 AbstractCegarLoop]: Abstraction has 20865 states and 41105 transitions. [2022-01-31 18:42:02,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 58 states have (on average 2.0) internal successors, (116), 57 states have internal predecessors, (116), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:42:02,157 INFO L276 IsEmpty]: Start isEmpty. Operand 20865 states and 41105 transitions. [2022-01-31 18:42:02,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-31 18:42:02,392 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:42:02,392 INFO L514 BasicCegarLoop]: trace histogram [30, 30, 30, 27, 10, 10, 9, 9, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:42:02,392 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2022-01-31 18:42:02,392 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:42:02,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:42:02,393 INFO L85 PathProgramCache]: Analyzing trace with hash -414883506, now seen corresponding path program 40 times [2022-01-31 18:42:02,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:42:02,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [20528867] [2022-01-31 18:42:02,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:42:02,394 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:42:02,394 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:42:02,394 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:42:02,396 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:42:02,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:42:02,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:42:02,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:42:02,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 18:42:02,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:42:03,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-01-31 18:42:03,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:42:03,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-31 18:42:03,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:42:04,350 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-01-31 18:42:04,351 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:42:04,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [20528867] [2022-01-31 18:42:04,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [20528867] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:42:04,351 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:42:04,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [65] imperfect sequences [] total 65 [2022-01-31 18:42:04,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102819383] [2022-01-31 18:42:04,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:42:04,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2022-01-31 18:42:04,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:42:04,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2022-01-31 18:42:04,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=3960, Unknown=0, NotChecked=0, Total=4160 [2022-01-31 18:42:04,352 INFO L87 Difference]: Start difference. First operand 20865 states and 41105 transitions. Second operand has 65 states, 64 states have (on average 1.8125) internal successors, (116), 63 states have internal predecessors, (116), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:42:17,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:42:17,427 INFO L93 Difference]: Finished difference Result 23656 states and 46286 transitions. [2022-01-31 18:42:17,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2022-01-31 18:42:17,428 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 64 states have (on average 1.8125) internal successors, (116), 63 states have internal predecessors, (116), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 190 [2022-01-31 18:42:17,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:42:17,564 INFO L225 Difference]: With dead ends: 23656 [2022-01-31 18:42:17,564 INFO L226 Difference]: Without dead ends: 23652 [2022-01-31 18:42:17,752 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7631 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=1016, Invalid=24106, Unknown=0, NotChecked=0, Total=25122 [2022-01-31 18:42:17,767 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 210 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 4513 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 4639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 4513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-01-31 18:42:17,767 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [210 Valid, 149 Invalid, 4639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 4513 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-01-31 18:42:17,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23652 states. [2022-01-31 18:42:27,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23652 to 20961. [2022-01-31 18:42:27,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20961 states, 20317 states have (on average 1.2436875522961066) internal successors, (25268), 20777 states have internal predecessors, (25268), 157 states have call successors, (157), 27 states have call predecessors, (157), 486 states have return successors, (15518), 156 states have call predecessors, (15518), 156 states have call successors, (15518) [2022-01-31 18:42:27,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20961 states to 20961 states and 40943 transitions. [2022-01-31 18:42:27,560 INFO L78 Accepts]: Start accepts. Automaton has 20961 states and 40943 transitions. Word has length 190 [2022-01-31 18:42:27,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:42:27,560 INFO L470 AbstractCegarLoop]: Abstraction has 20961 states and 40943 transitions. [2022-01-31 18:42:27,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 64 states have (on average 1.8125) internal successors, (116), 63 states have internal predecessors, (116), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:42:27,561 INFO L276 IsEmpty]: Start isEmpty. Operand 20961 states and 40943 transitions. [2022-01-31 18:42:27,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-31 18:42:27,784 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:42:27,784 INFO L514 BasicCegarLoop]: trace histogram [30, 30, 30, 26, 10, 10, 9, 9, 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] [2022-01-31 18:42:27,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2022-01-31 18:42:27,784 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:42:27,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:42:27,784 INFO L85 PathProgramCache]: Analyzing trace with hash -196028788, now seen corresponding path program 41 times [2022-01-31 18:42:27,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:42:27,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1782093623] [2022-01-31 18:42:27,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:42:27,785 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:42:27,786 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:42:27,786 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:42:27,787 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:42:27,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:42:28,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:42:28,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:42:28,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 18:42:28,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:42:28,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-01-31 18:42:28,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:42:28,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-31 18:42:28,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:42:29,736 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-01-31 18:42:29,736 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:42:29,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1782093623] [2022-01-31 18:42:29,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1782093623] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:42:29,736 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:42:29,736 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [63] imperfect sequences [] total 63 [2022-01-31 18:42:29,737 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865042821] [2022-01-31 18:42:29,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:42:29,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-01-31 18:42:29,737 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:42:29,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-01-31 18:42:29,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=3712, Unknown=0, NotChecked=0, Total=3906 [2022-01-31 18:42:29,738 INFO L87 Difference]: Start difference. First operand 20961 states and 40943 transitions. Second operand has 63 states, 62 states have (on average 1.8709677419354838) internal successors, (116), 61 states have internal predecessors, (116), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:42:42,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:42:42,116 INFO L93 Difference]: Finished difference Result 23974 states and 46253 transitions. [2022-01-31 18:42:42,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2022-01-31 18:42:42,116 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 62 states have (on average 1.8709677419354838) internal successors, (116), 61 states have internal predecessors, (116), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 190 [2022-01-31 18:42:42,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:42:42,264 INFO L225 Difference]: With dead ends: 23974 [2022-01-31 18:42:42,264 INFO L226 Difference]: Without dead ends: 23970 [2022-01-31 18:42:42,362 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6910 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=971, Invalid=22285, Unknown=0, NotChecked=0, Total=23256 [2022-01-31 18:42:42,362 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 217 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 4308 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 4423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 4308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-01-31 18:42:42,362 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [217 Valid, 137 Invalid, 4423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 4308 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-01-31 18:42:42,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23970 states. [2022-01-31 18:42:51,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23970 to 20646. [2022-01-31 18:42:51,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20646 states, 20003 states have (on average 1.2436134579813027) internal successors, (24876), 20462 states have internal predecessors, (24876), 157 states have call successors, (157), 27 states have call predecessors, (157), 485 states have return successors, (15321), 156 states have call predecessors, (15321), 156 states have call successors, (15321) [2022-01-31 18:42:51,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20646 states to 20646 states and 40354 transitions. [2022-01-31 18:42:51,624 INFO L78 Accepts]: Start accepts. Automaton has 20646 states and 40354 transitions. Word has length 190 [2022-01-31 18:42:51,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:42:51,625 INFO L470 AbstractCegarLoop]: Abstraction has 20646 states and 40354 transitions. [2022-01-31 18:42:51,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 62 states have (on average 1.8709677419354838) internal successors, (116), 61 states have internal predecessors, (116), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:42:51,625 INFO L276 IsEmpty]: Start isEmpty. Operand 20646 states and 40354 transitions. [2022-01-31 18:42:51,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-31 18:42:51,853 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:42:51,853 INFO L514 BasicCegarLoop]: trace histogram [30, 30, 30, 26, 10, 10, 9, 9, 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] [2022-01-31 18:42:51,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2022-01-31 18:42:51,853 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:42:51,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:42:51,853 INFO L85 PathProgramCache]: Analyzing trace with hash -392251252, now seen corresponding path program 42 times [2022-01-31 18:42:51,853 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:42:51,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [916008292] [2022-01-31 18:42:51,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:42:51,855 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:42:51,855 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:42:51,855 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:42:51,857 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:42:51,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:42:52,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:42:52,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:42:52,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 18:42:52,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:42:52,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-01-31 18:42:52,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:42:52,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-31 18:42:52,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:42:53,767 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-01-31 18:42:53,767 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:42:53,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [916008292] [2022-01-31 18:42:53,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [916008292] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:42:53,768 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:42:53,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [63] imperfect sequences [] total 63 [2022-01-31 18:42:53,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759122447] [2022-01-31 18:42:53,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:42:53,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-01-31 18:42:53,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:42:53,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-01-31 18:42:53,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=3712, Unknown=0, NotChecked=0, Total=3906 [2022-01-31 18:42:53,769 INFO L87 Difference]: Start difference. First operand 20646 states and 40354 transitions. Second operand has 63 states, 62 states have (on average 1.8709677419354838) internal successors, (116), 61 states have internal predecessors, (116), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:43:06,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:43:06,615 INFO L93 Difference]: Finished difference Result 23195 states and 44932 transitions. [2022-01-31 18:43:06,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2022-01-31 18:43:06,615 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 62 states have (on average 1.8709677419354838) internal successors, (116), 61 states have internal predecessors, (116), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 190 [2022-01-31 18:43:06,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:43:06,780 INFO L225 Difference]: With dead ends: 23195 [2022-01-31 18:43:06,780 INFO L226 Difference]: Without dead ends: 23191 [2022-01-31 18:43:07,011 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6902 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=971, Invalid=22285, Unknown=0, NotChecked=0, Total=23256 [2022-01-31 18:43:07,011 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 173 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 5498 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 5596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 5498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-01-31 18:43:07,011 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [173 Valid, 194 Invalid, 5596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 5498 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-01-31 18:43:07,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23191 states. [2022-01-31 18:43:17,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23191 to 20128. [2022-01-31 18:43:17,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20128 states, 19489 states have (on average 1.2433680537739238) internal successors, (24232), 19944 states have internal predecessors, (24232), 157 states have call successors, (157), 27 states have call predecessors, (157), 481 states have return successors, (15056), 156 states have call predecessors, (15056), 156 states have call successors, (15056) [2022-01-31 18:43:17,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20128 states to 20128 states and 39445 transitions. [2022-01-31 18:43:17,163 INFO L78 Accepts]: Start accepts. Automaton has 20128 states and 39445 transitions. Word has length 190 [2022-01-31 18:43:17,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:43:17,164 INFO L470 AbstractCegarLoop]: Abstraction has 20128 states and 39445 transitions. [2022-01-31 18:43:17,164 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 62 states have (on average 1.8709677419354838) internal successors, (116), 61 states have internal predecessors, (116), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:43:17,164 INFO L276 IsEmpty]: Start isEmpty. Operand 20128 states and 39445 transitions. [2022-01-31 18:43:17,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-31 18:43:17,545 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:43:17,545 INFO L514 BasicCegarLoop]: trace histogram [30, 30, 30, 25, 10, 10, 9, 9, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:43:17,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2022-01-31 18:43:17,545 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:43:17,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:43:17,545 INFO L85 PathProgramCache]: Analyzing trace with hash -173396534, now seen corresponding path program 43 times [2022-01-31 18:43:17,546 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:43:17,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1057093040] [2022-01-31 18:43:17,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:43:17,547 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:43:17,547 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:43:17,547 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:43:17,549 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:43:17,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:43:18,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:43:18,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:43:18,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 18:43:18,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:43:18,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-01-31 18:43:18,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:43:18,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-31 18:43:18,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:43:19,407 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-01-31 18:43:19,407 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:43:19,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1057093040] [2022-01-31 18:43:19,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1057093040] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:43:19,407 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:43:19,408 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [61] imperfect sequences [] total 61 [2022-01-31 18:43:19,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191942802] [2022-01-31 18:43:19,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:43:19,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-01-31 18:43:19,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:43:19,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-01-31 18:43:19,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=3472, Unknown=0, NotChecked=0, Total=3660 [2022-01-31 18:43:19,409 INFO L87 Difference]: Start difference. First operand 20128 states and 39445 transitions. Second operand has 61 states, 60 states have (on average 1.9333333333333333) internal successors, (116), 59 states have internal predecessors, (116), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:43:32,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:43:32,670 INFO L93 Difference]: Finished difference Result 23676 states and 45500 transitions. [2022-01-31 18:43:32,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2022-01-31 18:43:32,670 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 60 states have (on average 1.9333333333333333) internal successors, (116), 59 states have internal predecessors, (116), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 190 [2022-01-31 18:43:32,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:43:32,843 INFO L225 Difference]: With dead ends: 23676 [2022-01-31 18:43:32,843 INFO L226 Difference]: Without dead ends: 23672 [2022-01-31 18:43:32,949 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6217 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=926, Invalid=20536, Unknown=0, NotChecked=0, Total=21462 [2022-01-31 18:43:32,949 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 184 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 5595 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 5700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 5595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-01-31 18:43:32,949 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [184 Valid, 220 Invalid, 5700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 5595 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-01-31 18:43:32,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23672 states. [2022-01-31 18:43:41,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23672 to 19832. [2022-01-31 18:43:41,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19832 states, 19193 states have (on average 1.243265773980097) internal successors, (23862), 19648 states have internal predecessors, (23862), 157 states have call successors, (157), 27 states have call predecessors, (157), 481 states have return successors, (15056), 156 states have call predecessors, (15056), 156 states have call successors, (15056) [2022-01-31 18:43:42,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19832 states to 19832 states and 39075 transitions. [2022-01-31 18:43:42,055 INFO L78 Accepts]: Start accepts. Automaton has 19832 states and 39075 transitions. Word has length 190 [2022-01-31 18:43:42,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:43:42,056 INFO L470 AbstractCegarLoop]: Abstraction has 19832 states and 39075 transitions. [2022-01-31 18:43:42,056 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 60 states have (on average 1.9333333333333333) internal successors, (116), 59 states have internal predecessors, (116), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:43:42,056 INFO L276 IsEmpty]: Start isEmpty. Operand 19832 states and 39075 transitions. [2022-01-31 18:43:42,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-31 18:43:42,282 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:43:42,282 INFO L514 BasicCegarLoop]: trace histogram [30, 30, 30, 25, 10, 10, 9, 9, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:43:42,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2022-01-31 18:43:42,282 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:43:42,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:43:42,282 INFO L85 PathProgramCache]: Analyzing trace with hash -330211638, now seen corresponding path program 44 times [2022-01-31 18:43:42,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:43:42,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [552678483] [2022-01-31 18:43:42,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:43:42,283 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:43:42,284 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:43:42,284 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:43:42,285 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:43:42,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:43:42,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:43:42,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:43:42,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 18:43:42,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:43:43,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-01-31 18:43:43,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:43:43,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-31 18:43:43,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:43:44,067 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-01-31 18:43:44,068 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:43:44,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [552678483] [2022-01-31 18:43:44,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [552678483] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:43:44,068 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:43:44,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [61] imperfect sequences [] total 61 [2022-01-31 18:43:44,068 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001296786] [2022-01-31 18:43:44,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:43:44,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-01-31 18:43:44,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:43:44,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-01-31 18:43:44,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=3472, Unknown=0, NotChecked=0, Total=3660 [2022-01-31 18:43:44,069 INFO L87 Difference]: Start difference. First operand 19832 states and 39075 transitions. Second operand has 61 states, 60 states have (on average 1.9333333333333333) internal successors, (116), 59 states have internal predecessors, (116), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:43:56,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:43:56,779 INFO L93 Difference]: Finished difference Result 22778 states and 44156 transitions. [2022-01-31 18:43:56,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2022-01-31 18:43:56,780 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 60 states have (on average 1.9333333333333333) internal successors, (116), 59 states have internal predecessors, (116), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 190 [2022-01-31 18:43:56,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:43:56,910 INFO L225 Difference]: With dead ends: 22778 [2022-01-31 18:43:56,910 INFO L226 Difference]: Without dead ends: 22774 [2022-01-31 18:43:57,002 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6213 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=926, Invalid=20536, Unknown=0, NotChecked=0, Total=21462 [2022-01-31 18:43:57,005 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 193 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 4814 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 4930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 4814 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-01-31 18:43:57,005 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [193 Valid, 169 Invalid, 4930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 4814 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-01-31 18:43:57,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22774 states. [2022-01-31 18:44:06,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22774 to 19728. [2022-01-31 18:44:06,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19728 states, 19089 states have (on average 1.2432290848132432) internal successors, (23732), 19544 states have internal predecessors, (23732), 157 states have call successors, (157), 27 states have call predecessors, (157), 481 states have return successors, (14912), 156 states have call predecessors, (14912), 156 states have call successors, (14912) [2022-01-31 18:44:06,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19728 states to 19728 states and 38801 transitions. [2022-01-31 18:44:06,135 INFO L78 Accepts]: Start accepts. Automaton has 19728 states and 38801 transitions. Word has length 190 [2022-01-31 18:44:06,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:44:06,135 INFO L470 AbstractCegarLoop]: Abstraction has 19728 states and 38801 transitions. [2022-01-31 18:44:06,136 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 60 states have (on average 1.9333333333333333) internal successors, (116), 59 states have internal predecessors, (116), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:44:06,136 INFO L276 IsEmpty]: Start isEmpty. Operand 19728 states and 38801 transitions. [2022-01-31 18:44:06,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-31 18:44:06,358 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:44:06,359 INFO L514 BasicCegarLoop]: trace histogram [30, 30, 30, 24, 10, 10, 9, 9, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:44:06,359 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2022-01-31 18:44:06,359 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:44:06,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:44:06,359 INFO L85 PathProgramCache]: Analyzing trace with hash -111356920, now seen corresponding path program 45 times [2022-01-31 18:44:06,359 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:44:06,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1845816132] [2022-01-31 18:44:06,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:44:06,360 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:44:06,360 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:44:06,360 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:44:06,362 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:44:06,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:44:06,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:44:06,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:44:06,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 18:44:06,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:44:07,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-01-31 18:44:07,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:44:07,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-31 18:44:07,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:44:08,073 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-01-31 18:44:08,073 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:44:08,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1845816132] [2022-01-31 18:44:08,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1845816132] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:44:08,073 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:44:08,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [59] imperfect sequences [] total 59 [2022-01-31 18:44:08,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604874693] [2022-01-31 18:44:08,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:44:08,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-01-31 18:44:08,074 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:44:08,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-01-31 18:44:08,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=3240, Unknown=0, NotChecked=0, Total=3422 [2022-01-31 18:44:08,075 INFO L87 Difference]: Start difference. First operand 19728 states and 38801 transitions. Second operand has 59 states, 58 states have (on average 2.0) internal successors, (116), 57 states have internal predecessors, (116), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:44:20,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:44:20,977 INFO L93 Difference]: Finished difference Result 23008 states and 44364 transitions. [2022-01-31 18:44:20,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2022-01-31 18:44:20,977 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 58 states have (on average 2.0) internal successors, (116), 57 states have internal predecessors, (116), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 190 [2022-01-31 18:44:20,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:44:21,129 INFO L225 Difference]: With dead ends: 23008 [2022-01-31 18:44:21,129 INFO L226 Difference]: Without dead ends: 23004 [2022-01-31 18:44:21,232 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5564 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=881, Invalid=18859, Unknown=0, NotChecked=0, Total=19740 [2022-01-31 18:44:21,232 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 185 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 5445 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 5552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 5445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-01-31 18:44:21,232 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [185 Valid, 217 Invalid, 5552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 5445 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-01-31 18:44:21,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23004 states. [2022-01-31 18:44:30,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23004 to 19358. [2022-01-31 18:44:30,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19358 states, 18719 states have (on average 1.24317538330039) internal successors, (23271), 19174 states have internal predecessors, (23271), 157 states have call successors, (157), 27 states have call predecessors, (157), 481 states have return successors, (14756), 156 states have call predecessors, (14756), 156 states have call successors, (14756) [2022-01-31 18:44:30,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19358 states to 19358 states and 38184 transitions. [2022-01-31 18:44:30,408 INFO L78 Accepts]: Start accepts. Automaton has 19358 states and 38184 transitions. Word has length 190 [2022-01-31 18:44:30,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:44:30,409 INFO L470 AbstractCegarLoop]: Abstraction has 19358 states and 38184 transitions. [2022-01-31 18:44:30,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 58 states have (on average 2.0) internal successors, (116), 57 states have internal predecessors, (116), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:44:30,409 INFO L276 IsEmpty]: Start isEmpty. Operand 19358 states and 38184 transitions. [2022-01-31 18:44:30,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-31 18:44:30,629 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:44:30,629 INFO L514 BasicCegarLoop]: trace histogram [30, 30, 30, 23, 10, 10, 9, 9, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:44:30,629 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2022-01-31 18:44:30,629 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:44:30,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:44:30,630 INFO L85 PathProgramCache]: Analyzing trace with hash -2105501626, now seen corresponding path program 46 times [2022-01-31 18:44:30,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:44:30,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1960678636] [2022-01-31 18:44:30,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:44:30,631 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:44:30,631 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:44:30,631 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:44:30,633 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:44:30,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:44:31,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:44:31,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:44:31,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 18:44:31,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:44:31,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-01-31 18:44:31,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:44:31,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-31 18:44:31,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:44:32,231 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-01-31 18:44:32,231 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:44:32,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1960678636] [2022-01-31 18:44:32,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1960678636] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:44:32,232 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:44:32,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [57] imperfect sequences [] total 57 [2022-01-31 18:44:32,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793143405] [2022-01-31 18:44:32,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:44:32,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-01-31 18:44:32,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:44:32,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-01-31 18:44:32,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=3016, Unknown=0, NotChecked=0, Total=3192 [2022-01-31 18:44:32,233 INFO L87 Difference]: Start difference. First operand 19358 states and 38184 transitions. Second operand has 57 states, 56 states have (on average 2.0714285714285716) internal successors, (116), 55 states have internal predecessors, (116), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:44:45,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:44:45,286 INFO L93 Difference]: Finished difference Result 22944 states and 44101 transitions. [2022-01-31 18:44:45,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2022-01-31 18:44:45,286 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 56 states have (on average 2.0714285714285716) internal successors, (116), 55 states have internal predecessors, (116), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 190 [2022-01-31 18:44:45,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:44:45,420 INFO L225 Difference]: With dead ends: 22944 [2022-01-31 18:44:45,420 INFO L226 Difference]: Without dead ends: 22940 [2022-01-31 18:44:45,522 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4955 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=836, Invalid=17254, Unknown=0, NotChecked=0, Total=18090 [2022-01-31 18:44:45,523 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 190 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 5254 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 5360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 5254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-01-31 18:44:45,523 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [190 Valid, 211 Invalid, 5360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 5254 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-01-31 18:44:45,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22940 states. [2022-01-31 18:44:54,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22940 to 19266. [2022-01-31 18:44:54,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19266 states, 18627 states have (on average 1.2434637891233156) internal successors, (23162), 19082 states have internal predecessors, (23162), 157 states have call successors, (157), 27 states have call predecessors, (157), 481 states have return successors, (14642), 156 states have call predecessors, (14642), 156 states have call successors, (14642) [2022-01-31 18:44:54,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19266 states to 19266 states and 37961 transitions. [2022-01-31 18:44:54,633 INFO L78 Accepts]: Start accepts. Automaton has 19266 states and 37961 transitions. Word has length 190 [2022-01-31 18:44:54,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:44:54,633 INFO L470 AbstractCegarLoop]: Abstraction has 19266 states and 37961 transitions. [2022-01-31 18:44:54,633 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 56 states have (on average 2.0714285714285716) internal successors, (116), 55 states have internal predecessors, (116), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:44:54,633 INFO L276 IsEmpty]: Start isEmpty. Operand 19266 states and 37961 transitions. [2022-01-31 18:44:54,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-31 18:44:54,845 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:44:54,845 INFO L514 BasicCegarLoop]: trace histogram [30, 30, 30, 22, 10, 10, 9, 9, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:44:54,845 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2022-01-31 18:44:54,846 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:44:54,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:44:54,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1178348420, now seen corresponding path program 47 times [2022-01-31 18:44:54,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:44:54,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [943378366] [2022-01-31 18:44:54,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:44:54,847 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:44:54,847 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:44:54,847 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:44:54,849 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:44:54,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:44:55,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:44:55,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:44:55,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 18:44:55,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:44:55,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-01-31 18:44:55,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:44:55,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-31 18:44:55,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:44:56,471 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-01-31 18:44:56,472 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:44:56,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [943378366] [2022-01-31 18:44:56,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [943378366] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:44:56,472 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:44:56,472 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [55] imperfect sequences [] total 55 [2022-01-31 18:44:56,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633440937] [2022-01-31 18:44:56,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:44:56,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-01-31 18:44:56,472 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:44:56,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-01-31 18:44:56,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=2800, Unknown=0, NotChecked=0, Total=2970 [2022-01-31 18:44:56,473 INFO L87 Difference]: Start difference. First operand 19266 states and 37961 transitions. Second operand has 55 states, 54 states have (on average 2.1481481481481484) internal successors, (116), 53 states have internal predecessors, (116), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:45:09,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:45:09,600 INFO L93 Difference]: Finished difference Result 23096 states and 44141 transitions. [2022-01-31 18:45:09,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-01-31 18:45:09,600 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 54 states have (on average 2.1481481481481484) internal successors, (116), 53 states have internal predecessors, (116), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 190 [2022-01-31 18:45:09,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:45:09,742 INFO L225 Difference]: With dead ends: 23096 [2022-01-31 18:45:09,742 INFO L226 Difference]: Without dead ends: 23092 [2022-01-31 18:45:09,852 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4386 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=791, Invalid=15721, Unknown=0, NotChecked=0, Total=16512 [2022-01-31 18:45:09,852 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 167 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 5371 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 5461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 5371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-01-31 18:45:09,852 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [167 Valid, 206 Invalid, 5461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 5371 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-01-31 18:45:09,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23092 states. [2022-01-31 18:45:18,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23092 to 19011. [2022-01-31 18:45:18,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19011 states, 18382 states have (on average 1.242955064737243) internal successors, (22848), 18827 states have internal predecessors, (22848), 157 states have call successors, (157), 27 states have call predecessors, (157), 471 states have return successors, (14390), 156 states have call predecessors, (14390), 156 states have call successors, (14390) [2022-01-31 18:45:18,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19011 states to 19011 states and 37395 transitions. [2022-01-31 18:45:18,877 INFO L78 Accepts]: Start accepts. Automaton has 19011 states and 37395 transitions. Word has length 190 [2022-01-31 18:45:18,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:45:18,877 INFO L470 AbstractCegarLoop]: Abstraction has 19011 states and 37395 transitions. [2022-01-31 18:45:18,877 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 54 states have (on average 2.1481481481481484) internal successors, (116), 53 states have internal predecessors, (116), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:45:18,877 INFO L276 IsEmpty]: Start isEmpty. Operand 19011 states and 37395 transitions. [2022-01-31 18:45:19,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-31 18:45:19,087 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:45:19,088 INFO L514 BasicCegarLoop]: trace histogram [30, 30, 30, 21, 10, 10, 9, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:45:19,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2022-01-31 18:45:19,088 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:45:19,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:45:19,088 INFO L85 PathProgramCache]: Analyzing trace with hash 785321410, now seen corresponding path program 48 times [2022-01-31 18:45:19,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:45:19,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [948038725] [2022-01-31 18:45:19,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:45:19,089 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:45:19,090 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:45:19,090 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:45:19,092 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:45:19,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:45:19,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:45:19,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:45:19,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 18:45:19,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:45:20,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-01-31 18:45:20,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:45:20,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-31 18:45:20,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:45:21,357 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-31 18:45:21,357 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:45:21,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [948038725] [2022-01-31 18:45:21,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [948038725] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:45:21,357 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:45:21,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [71] imperfect sequences [] total 71 [2022-01-31 18:45:21,357 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931295218] [2022-01-31 18:45:21,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:45:21,357 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2022-01-31 18:45:21,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:45:21,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2022-01-31 18:45:21,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=4774, Unknown=0, NotChecked=0, Total=4970 [2022-01-31 18:45:21,359 INFO L87 Difference]: Start difference. First operand 19011 states and 37395 transitions. Second operand has 71 states, 71 states have (on average 1.9154929577464788) internal successors, (136), 70 states have internal predecessors, (136), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:45:38,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:45:38,487 INFO L93 Difference]: Finished difference Result 24699 states and 49066 transitions. [2022-01-31 18:45:38,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2022-01-31 18:45:38,488 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 1.9154929577464788) internal successors, (136), 70 states have internal predecessors, (136), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 190 [2022-01-31 18:45:38,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:45:38,940 INFO L225 Difference]: With dead ends: 24699 [2022-01-31 18:45:38,940 INFO L226 Difference]: Without dead ends: 24695 [2022-01-31 18:45:39,081 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11896 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=1391, Invalid=35665, Unknown=0, NotChecked=0, Total=37056 [2022-01-31 18:45:39,082 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 171 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 9785 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 9893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 9785 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-01-31 18:45:39,082 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [171 Valid, 229 Invalid, 9893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 9785 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-01-31 18:45:39,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24695 states. [2022-01-31 18:45:52,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24695 to 22373. [2022-01-31 18:45:52,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22373 states, 21644 states have (on average 1.2420994270929588) internal successors, (26884), 22155 states have internal predecessors, (26884), 187 states have call successors, (187), 31 states have call predecessors, (187), 541 states have return successors, (18215), 186 states have call predecessors, (18215), 186 states have call successors, (18215) [2022-01-31 18:45:52,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22373 states to 22373 states and 45286 transitions. [2022-01-31 18:45:52,397 INFO L78 Accepts]: Start accepts. Automaton has 22373 states and 45286 transitions. Word has length 190 [2022-01-31 18:45:52,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:45:52,397 INFO L470 AbstractCegarLoop]: Abstraction has 22373 states and 45286 transitions. [2022-01-31 18:45:52,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 1.9154929577464788) internal successors, (136), 70 states have internal predecessors, (136), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:45:52,397 INFO L276 IsEmpty]: Start isEmpty. Operand 22373 states and 45286 transitions. [2022-01-31 18:45:52,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-31 18:45:52,690 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:45:52,690 INFO L514 BasicCegarLoop]: trace histogram [30, 30, 30, 20, 10, 10, 10, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:45:52,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2022-01-31 18:45:52,690 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:45:52,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:45:52,691 INFO L85 PathProgramCache]: Analyzing trace with hash 1033467904, now seen corresponding path program 49 times [2022-01-31 18:45:52,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:45:52,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1762391876] [2022-01-31 18:45:52,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:45:52,692 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:45:52,692 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:45:52,692 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:45:52,694 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:45:52,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:45:53,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:45:53,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:45:53,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 18:45:53,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:45:53,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-01-31 18:45:53,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:45:53,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-31 18:45:53,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:45:54,018 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-31 18:45:54,019 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:45:54,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1762391876] [2022-01-31 18:45:54,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1762391876] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:45:54,019 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:45:54,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [49] imperfect sequences [] total 49 [2022-01-31 18:45:54,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048774802] [2022-01-31 18:45:54,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:45:54,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-01-31 18:45:54,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:45:54,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-01-31 18:45:54,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=2157, Unknown=0, NotChecked=0, Total=2352 [2022-01-31 18:45:54,020 INFO L87 Difference]: Start difference. First operand 22373 states and 45286 transitions. Second operand has 49 states, 49 states have (on average 2.020408163265306) internal successors, (99), 47 states have internal predecessors, (99), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:46:11,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:46:11,584 INFO L93 Difference]: Finished difference Result 34670 states and 77374 transitions. [2022-01-31 18:46:11,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-01-31 18:46:11,584 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.020408163265306) internal successors, (99), 47 states have internal predecessors, (99), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 190 [2022-01-31 18:46:11,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:46:12,320 INFO L225 Difference]: With dead ends: 34670 [2022-01-31 18:46:12,320 INFO L226 Difference]: Without dead ends: 34666 [2022-01-31 18:46:12,863 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2748 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=832, Invalid=8288, Unknown=0, NotChecked=0, Total=9120 [2022-01-31 18:46:12,864 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 138 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 2504 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 2598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 2504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-31 18:46:12,864 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [138 Valid, 138 Invalid, 2598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 2504 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-31 18:46:12,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34666 states.